IBM LoRa MAC in C (LMiC) mbed library port
Dependents: lora-temperature LoRaWAN-lmic-app_HS LoRaWAN-lmic-app_huynh
LoRa WAN in C for sx1276 shield
Currently version 1.5
LoRaWAN network configuration for end-device
The following three pieces of information uniquely identifies end-device to network to allow over-the-air activation. These are stored in the end-device prior to join procedure.
AppEUI
Uniquely identifies application provider of end-device.
Least-significant byte first, 8 bytes, use reverse memcpy() to keep same order as shown on lora server.
example C code
static const u1_t APPEUI[8] = { 0x01, 0x00, 0x01, 0x00, 0x00, 0x0C, 0x25, 0x00 };
This is copied into LMIC by os_getArtEui()
callback function in application.
DevEUI
End-device ID, unique to each end-node.
Least-significant byte first, 8 bytes, use reverse memcpy() to keep same order as shown on lora server.
example C code
static const u1_t DEVEUI[8] = { 0x00, 0x00, 0x00, 0x00, 0x01, 0x0C, 0x25, 0x00 };
This is copied into LMIC by os_getDevEui()
callback function in application.
AppKey (aka DevKey)
128-bit (16byte) AES key.
example C code
static const u1_t DEVKEY[16] = { 0xe4, 0x72, 0x71, 0xc5, 0xf5, 0x30, 0xa9, 0x9f, 0xcf, 0xc4, 0x0e, 0xab, 0xea, 0xd7, 0x19, 0x42 };
This is copied into LMIC by os_getDevKey()
callback function in application.
Using over-the air activation, the end-device (LMIC) performs a join procedure every time it starts for first time, or has lost session context information. When join procedure has successfully completed, the end-device will have a network session key (NwkSKey) and an application session key (AppSKey), which are used for encryption and message integrity check.
US915 configuration with http://us01-iot.semtech.com/
- log in to server
- click on Applications
- find your application and click it
- go to configure motes
- to create a mote, you may enter a new DevEUI
- you may copy-paste the 16byte application key from an already existing mote, if you desire.
CHNL_HYBRID | 125KHz | 500KHz |
---|---|---|
defined value | channels | channel |
0 | 0 to 7 | 64 |
1 | 8 to 15 | 65 |
2 | 16 to 23 | 66 |
3 | 24 to 31 | 67 |
4 | 32 to 39 | 68 |
5 | 40 to 47 | 69 |
6 | 48 to 55 | 70 |
7 | 56 to 63 | 71 |
undef | 0 to 63 | 64 to 71 |
lmic.cpp@3:519c71d29a06, 2015-11-26 (annotated)
- Committer:
- mluis
- Date:
- Thu Nov 26 12:46:56 2015 +0000
- Revision:
- 3:519c71d29a06
- Parent:
- 1:d3b7bde3995c
- Child:
- 4:85b2b647cb64
Adapted radio.cpp to new version of SX1276Lib radio driver; Small corrections on lmic.c/lmic.h
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mluis | 0:62d1edcc13d1 | 1 | /******************************************************************************* |
mluis | 1:d3b7bde3995c | 2 | * Copyright (c) 2014-2015 IBM Corporation. |
mluis | 0:62d1edcc13d1 | 3 | * All rights reserved. This program and the accompanying materials |
mluis | 0:62d1edcc13d1 | 4 | * are made available under the terms of the Eclipse Public License v1.0 |
mluis | 0:62d1edcc13d1 | 5 | * which accompanies this distribution, and is available at |
mluis | 0:62d1edcc13d1 | 6 | * http://www.eclipse.org/legal/epl-v10.html |
mluis | 0:62d1edcc13d1 | 7 | * |
mluis | 0:62d1edcc13d1 | 8 | * Contributors: |
mluis | 0:62d1edcc13d1 | 9 | * IBM Zurich Research Lab - initial API, implementation and documentation |
mluis | 0:62d1edcc13d1 | 10 | *******************************************************************************/ |
mluis | 0:62d1edcc13d1 | 11 | |
mluis | 1:d3b7bde3995c | 12 | //! \file |
mluis | 0:62d1edcc13d1 | 13 | #include "lmic.h" |
mluis | 0:62d1edcc13d1 | 14 | |
mluis | 1:d3b7bde3995c | 15 | #if !defined(MINRX_SYMS) |
mluis | 1:d3b7bde3995c | 16 | #define MINRX_SYMS 5 |
mluis | 1:d3b7bde3995c | 17 | #endif // !defined(MINRX_SYMS) |
mluis | 0:62d1edcc13d1 | 18 | #define PAMBL_SYMS 8 |
mluis | 0:62d1edcc13d1 | 19 | #define PAMBL_FSK 5 |
mluis | 0:62d1edcc13d1 | 20 | #define PRERX_FSK 1 |
mluis | 0:62d1edcc13d1 | 21 | #define RXLEN_FSK (1+5+2) |
mluis | 0:62d1edcc13d1 | 22 | |
mluis | 0:62d1edcc13d1 | 23 | #define BCN_INTV_osticks sec2osticks(BCN_INTV_sec) |
mluis | 0:62d1edcc13d1 | 24 | #define TXRX_GUARD_osticks ms2osticks(TXRX_GUARD_ms) |
mluis | 0:62d1edcc13d1 | 25 | #define JOIN_GUARD_osticks ms2osticks(JOIN_GUARD_ms) |
mluis | 0:62d1edcc13d1 | 26 | #define DELAY_DNW1_osticks sec2osticks(DELAY_DNW1) |
mluis | 0:62d1edcc13d1 | 27 | #define DELAY_DNW2_osticks sec2osticks(DELAY_DNW2) |
mluis | 0:62d1edcc13d1 | 28 | #define DELAY_JACC1_osticks sec2osticks(DELAY_JACC1) |
mluis | 0:62d1edcc13d1 | 29 | #define DELAY_JACC2_osticks sec2osticks(DELAY_JACC2) |
mluis | 0:62d1edcc13d1 | 30 | #define DELAY_EXTDNW2_osticks sec2osticks(DELAY_EXTDNW2) |
mluis | 0:62d1edcc13d1 | 31 | #define BCN_RESERVE_osticks ms2osticks(BCN_RESERVE_ms) |
mluis | 0:62d1edcc13d1 | 32 | #define BCN_GUARD_osticks ms2osticks(BCN_GUARD_ms) |
mluis | 0:62d1edcc13d1 | 33 | #define BCN_WINDOW_osticks ms2osticks(BCN_WINDOW_ms) |
mluis | 0:62d1edcc13d1 | 34 | #define AIRTIME_BCN_osticks us2osticks(AIRTIME_BCN) |
mluis | 1:d3b7bde3995c | 35 | #if defined(CFG_eu868) |
mluis | 1:d3b7bde3995c | 36 | #define DNW2_SAFETY_ZONE ms2osticks(3000) |
mluis | 1:d3b7bde3995c | 37 | #endif |
mluis | 1:d3b7bde3995c | 38 | #if defined(CFG_us915) |
mluis | 1:d3b7bde3995c | 39 | #define DNW2_SAFETY_ZONE ms2osticks(750) |
mluis | 1:d3b7bde3995c | 40 | #endif |
mluis | 1:d3b7bde3995c | 41 | |
mluis | 1:d3b7bde3995c | 42 | // Special APIs - for development or testing |
mluis | 1:d3b7bde3995c | 43 | #define isTESTMODE() 0 |
mluis | 0:62d1edcc13d1 | 44 | |
mluis | 0:62d1edcc13d1 | 45 | DEFINE_LMIC; |
mluis | 0:62d1edcc13d1 | 46 | DECL_ON_LMIC_EVENT; |
mluis | 0:62d1edcc13d1 | 47 | |
mluis | 0:62d1edcc13d1 | 48 | |
mluis | 0:62d1edcc13d1 | 49 | // Fwd decls. |
mluis | 0:62d1edcc13d1 | 50 | static void engineUpdate(void); |
mluis | 0:62d1edcc13d1 | 51 | static void startScan (void); |
mluis | 0:62d1edcc13d1 | 52 | |
mluis | 0:62d1edcc13d1 | 53 | |
mluis | 0:62d1edcc13d1 | 54 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 55 | // BEG OS - default implementations for certain OS suport functions |
mluis | 0:62d1edcc13d1 | 56 | |
mluis | 1:d3b7bde3995c | 57 | #if !defined(HAS_os_calls) |
mluis | 0:62d1edcc13d1 | 58 | |
mluis | 1:d3b7bde3995c | 59 | #if !defined(os_rlsbf2) |
mluis | 0:62d1edcc13d1 | 60 | u2_t os_rlsbf2 (xref2cu1_t buf) { |
mluis | 0:62d1edcc13d1 | 61 | return (u2_t)(buf[0] | (buf[1]<<8)); |
mluis | 0:62d1edcc13d1 | 62 | } |
mluis | 0:62d1edcc13d1 | 63 | #endif |
mluis | 0:62d1edcc13d1 | 64 | |
mluis | 1:d3b7bde3995c | 65 | #if !defined(os_rlsbf4) |
mluis | 0:62d1edcc13d1 | 66 | u4_t os_rlsbf4 (xref2cu1_t buf) { |
mluis | 0:62d1edcc13d1 | 67 | return (u4_t)(buf[0] | (buf[1]<<8) | ((u4_t)buf[2]<<16) | ((u4_t)buf[3]<<24)); |
mluis | 0:62d1edcc13d1 | 68 | } |
mluis | 0:62d1edcc13d1 | 69 | #endif |
mluis | 0:62d1edcc13d1 | 70 | |
mluis | 0:62d1edcc13d1 | 71 | |
mluis | 1:d3b7bde3995c | 72 | #if !defined(os_rmsbf4) |
mluis | 0:62d1edcc13d1 | 73 | u4_t os_rmsbf4 (xref2cu1_t buf) { |
mluis | 0:62d1edcc13d1 | 74 | return (u4_t)(buf[3] | (buf[2]<<8) | ((u4_t)buf[1]<<16) | ((u4_t)buf[0]<<24)); |
mluis | 0:62d1edcc13d1 | 75 | } |
mluis | 0:62d1edcc13d1 | 76 | #endif |
mluis | 0:62d1edcc13d1 | 77 | |
mluis | 0:62d1edcc13d1 | 78 | |
mluis | 1:d3b7bde3995c | 79 | #if !defined(os_wlsbf2) |
mluis | 0:62d1edcc13d1 | 80 | void os_wlsbf2 (xref2u1_t buf, u2_t v) { |
mluis | 0:62d1edcc13d1 | 81 | buf[0] = v; |
mluis | 0:62d1edcc13d1 | 82 | buf[1] = v>>8; |
mluis | 0:62d1edcc13d1 | 83 | } |
mluis | 0:62d1edcc13d1 | 84 | #endif |
mluis | 0:62d1edcc13d1 | 85 | |
mluis | 1:d3b7bde3995c | 86 | #if !defined(os_wlsbf4) |
mluis | 0:62d1edcc13d1 | 87 | void os_wlsbf4 (xref2u1_t buf, u4_t v) { |
mluis | 0:62d1edcc13d1 | 88 | buf[0] = v; |
mluis | 0:62d1edcc13d1 | 89 | buf[1] = v>>8; |
mluis | 0:62d1edcc13d1 | 90 | buf[2] = v>>16; |
mluis | 0:62d1edcc13d1 | 91 | buf[3] = v>>24; |
mluis | 0:62d1edcc13d1 | 92 | } |
mluis | 0:62d1edcc13d1 | 93 | #endif |
mluis | 0:62d1edcc13d1 | 94 | |
mluis | 1:d3b7bde3995c | 95 | #if !defined(os_wmsbf4) |
mluis | 0:62d1edcc13d1 | 96 | void os_wmsbf4 (xref2u1_t buf, u4_t v) { |
mluis | 0:62d1edcc13d1 | 97 | buf[3] = v; |
mluis | 0:62d1edcc13d1 | 98 | buf[2] = v>>8; |
mluis | 0:62d1edcc13d1 | 99 | buf[1] = v>>16; |
mluis | 0:62d1edcc13d1 | 100 | buf[0] = v>>24; |
mluis | 0:62d1edcc13d1 | 101 | } |
mluis | 0:62d1edcc13d1 | 102 | #endif |
mluis | 0:62d1edcc13d1 | 103 | |
mluis | 1:d3b7bde3995c | 104 | #if !defined(os_getBattLevel) |
mluis | 0:62d1edcc13d1 | 105 | u1_t os_getBattLevel (void) { |
mluis | 0:62d1edcc13d1 | 106 | return MCMD_DEVS_BATT_NOINFO; |
mluis | 0:62d1edcc13d1 | 107 | } |
mluis | 0:62d1edcc13d1 | 108 | #endif |
mluis | 0:62d1edcc13d1 | 109 | |
mluis | 1:d3b7bde3995c | 110 | #if !defined(os_crc16) |
mluis | 1:d3b7bde3995c | 111 | // New CRC-16 CCITT(XMODEM) checksum for beacons: |
mluis | 0:62d1edcc13d1 | 112 | u2_t os_crc16 (xref2u1_t data, uint len) { |
mluis | 1:d3b7bde3995c | 113 | u2_t remainder = 0; |
mluis | 1:d3b7bde3995c | 114 | u2_t polynomial = 0x1021; |
mluis | 1:d3b7bde3995c | 115 | for( uint i = 0; i < len; i++ ) { |
mluis | 1:d3b7bde3995c | 116 | remainder ^= data[i] << 8; |
mluis | 1:d3b7bde3995c | 117 | for( u1_t bit = 8; bit > 0; bit--) { |
mluis | 1:d3b7bde3995c | 118 | if( (remainder & 0x8000) ) |
mluis | 1:d3b7bde3995c | 119 | remainder = (remainder << 1) ^ polynomial; |
mluis | 1:d3b7bde3995c | 120 | else |
mluis | 1:d3b7bde3995c | 121 | remainder <<= 1; |
mluis | 1:d3b7bde3995c | 122 | } |
mluis | 0:62d1edcc13d1 | 123 | } |
mluis | 1:d3b7bde3995c | 124 | return remainder; |
mluis | 0:62d1edcc13d1 | 125 | } |
mluis | 0:62d1edcc13d1 | 126 | #endif |
mluis | 0:62d1edcc13d1 | 127 | |
mluis | 0:62d1edcc13d1 | 128 | #endif // !HAS_os_calls |
mluis | 0:62d1edcc13d1 | 129 | |
mluis | 0:62d1edcc13d1 | 130 | // END OS - default implementations for certain OS suport functions |
mluis | 0:62d1edcc13d1 | 131 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 132 | |
mluis | 0:62d1edcc13d1 | 133 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 134 | // BEG AES |
mluis | 0:62d1edcc13d1 | 135 | |
mluis | 0:62d1edcc13d1 | 136 | static void micB0 (u4_t devaddr, u4_t seqno, int dndir, int len) { |
mluis | 0:62d1edcc13d1 | 137 | os_clearMem(AESaux,16); |
mluis | 0:62d1edcc13d1 | 138 | AESaux[0] = 0x49; |
mluis | 0:62d1edcc13d1 | 139 | AESaux[5] = dndir?1:0; |
mluis | 0:62d1edcc13d1 | 140 | AESaux[15] = len; |
mluis | 0:62d1edcc13d1 | 141 | os_wlsbf4(AESaux+ 6,devaddr); |
mluis | 0:62d1edcc13d1 | 142 | os_wlsbf4(AESaux+10,seqno); |
mluis | 0:62d1edcc13d1 | 143 | } |
mluis | 0:62d1edcc13d1 | 144 | |
mluis | 0:62d1edcc13d1 | 145 | |
mluis | 0:62d1edcc13d1 | 146 | static int aes_verifyMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) { |
mluis | 0:62d1edcc13d1 | 147 | micB0(devaddr, seqno, dndir, len); |
mluis | 0:62d1edcc13d1 | 148 | os_copyMem(AESkey,key,16); |
mluis | 0:62d1edcc13d1 | 149 | return os_aes(AES_MIC, pdu, len) == os_rmsbf4(pdu+len); |
mluis | 0:62d1edcc13d1 | 150 | } |
mluis | 0:62d1edcc13d1 | 151 | |
mluis | 0:62d1edcc13d1 | 152 | |
mluis | 0:62d1edcc13d1 | 153 | static void aes_appendMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) { |
mluis | 0:62d1edcc13d1 | 154 | micB0(devaddr, seqno, dndir, len); |
mluis | 0:62d1edcc13d1 | 155 | os_copyMem(AESkey,key,16); |
mluis | 0:62d1edcc13d1 | 156 | // MSB because of internal structure of AES |
mluis | 0:62d1edcc13d1 | 157 | os_wmsbf4(pdu+len, os_aes(AES_MIC, pdu, len)); |
mluis | 0:62d1edcc13d1 | 158 | } |
mluis | 0:62d1edcc13d1 | 159 | |
mluis | 0:62d1edcc13d1 | 160 | |
mluis | 0:62d1edcc13d1 | 161 | static void aes_appendMic0 (xref2u1_t pdu, int len) { |
mluis | 0:62d1edcc13d1 | 162 | os_getDevKey(AESkey); |
mluis | 0:62d1edcc13d1 | 163 | os_wmsbf4(pdu+len, os_aes(AES_MIC|AES_MICNOAUX, pdu, len)); // MSB because of internal structure of AES |
mluis | 0:62d1edcc13d1 | 164 | } |
mluis | 0:62d1edcc13d1 | 165 | |
mluis | 0:62d1edcc13d1 | 166 | |
mluis | 0:62d1edcc13d1 | 167 | static int aes_verifyMic0 (xref2u1_t pdu, int len) { |
mluis | 0:62d1edcc13d1 | 168 | os_getDevKey(AESkey); |
mluis | 0:62d1edcc13d1 | 169 | return os_aes(AES_MIC|AES_MICNOAUX, pdu, len) == os_rmsbf4(pdu+len); |
mluis | 0:62d1edcc13d1 | 170 | } |
mluis | 0:62d1edcc13d1 | 171 | |
mluis | 0:62d1edcc13d1 | 172 | |
mluis | 0:62d1edcc13d1 | 173 | static void aes_encrypt (xref2u1_t pdu, int len) { |
mluis | 0:62d1edcc13d1 | 174 | os_getDevKey(AESkey); |
mluis | 0:62d1edcc13d1 | 175 | os_aes(AES_ENC, pdu, len); |
mluis | 0:62d1edcc13d1 | 176 | } |
mluis | 0:62d1edcc13d1 | 177 | |
mluis | 0:62d1edcc13d1 | 178 | |
mluis | 0:62d1edcc13d1 | 179 | static void aes_cipher (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t payload, int len) { |
mluis | 0:62d1edcc13d1 | 180 | if( len <= 0 ) |
mluis | 1:d3b7bde3995c | 181 | return; |
mluis | 0:62d1edcc13d1 | 182 | os_clearMem(AESaux, 16); |
mluis | 0:62d1edcc13d1 | 183 | AESaux[0] = AESaux[15] = 1; // mode=cipher / dir=down / block counter=1 |
mluis | 0:62d1edcc13d1 | 184 | AESaux[5] = dndir?1:0; |
mluis | 0:62d1edcc13d1 | 185 | os_wlsbf4(AESaux+ 6,devaddr); |
mluis | 0:62d1edcc13d1 | 186 | os_wlsbf4(AESaux+10,seqno); |
mluis | 0:62d1edcc13d1 | 187 | os_copyMem(AESkey,key,16); |
mluis | 0:62d1edcc13d1 | 188 | os_aes(AES_CTR, payload, len); |
mluis | 0:62d1edcc13d1 | 189 | } |
mluis | 0:62d1edcc13d1 | 190 | |
mluis | 0:62d1edcc13d1 | 191 | |
mluis | 0:62d1edcc13d1 | 192 | static void aes_sessKeys (u2_t devnonce, xref2cu1_t artnonce, xref2u1_t nwkkey, xref2u1_t artkey) { |
mluis | 0:62d1edcc13d1 | 193 | os_clearMem(nwkkey, 16); |
mluis | 0:62d1edcc13d1 | 194 | nwkkey[0] = 0x01; |
mluis | 0:62d1edcc13d1 | 195 | os_copyMem(nwkkey+1, artnonce, LEN_ARTNONCE+LEN_NETID); |
mluis | 0:62d1edcc13d1 | 196 | os_wlsbf2(nwkkey+1+LEN_ARTNONCE+LEN_NETID, devnonce); |
mluis | 0:62d1edcc13d1 | 197 | os_copyMem(artkey, nwkkey, 16); |
mluis | 0:62d1edcc13d1 | 198 | artkey[0] = 0x02; |
mluis | 0:62d1edcc13d1 | 199 | |
mluis | 0:62d1edcc13d1 | 200 | os_getDevKey(AESkey); |
mluis | 0:62d1edcc13d1 | 201 | os_aes(AES_ENC, nwkkey, 16); |
mluis | 0:62d1edcc13d1 | 202 | os_getDevKey(AESkey); |
mluis | 0:62d1edcc13d1 | 203 | os_aes(AES_ENC, artkey, 16); |
mluis | 0:62d1edcc13d1 | 204 | } |
mluis | 0:62d1edcc13d1 | 205 | |
mluis | 0:62d1edcc13d1 | 206 | // END AES |
mluis | 0:62d1edcc13d1 | 207 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 208 | |
mluis | 0:62d1edcc13d1 | 209 | |
mluis | 0:62d1edcc13d1 | 210 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 211 | // BEG LORA |
mluis | 0:62d1edcc13d1 | 212 | |
mluis | 1:d3b7bde3995c | 213 | #if defined(CFG_eu868) // ======================================== |
mluis | 0:62d1edcc13d1 | 214 | |
mluis | 0:62d1edcc13d1 | 215 | #define maxFrameLen(dr) ((dr)<=DR_SF9 ? maxFrameLens[(dr)] : 0xFF) |
mluis | 0:62d1edcc13d1 | 216 | const u1_t maxFrameLens [] = { 64,64,64,123 }; |
mluis | 0:62d1edcc13d1 | 217 | |
mluis | 0:62d1edcc13d1 | 218 | const u1_t _DR2RPS_CRC[] = { |
mluis | 0:62d1edcc13d1 | 219 | ILLEGAL_RPS, |
mluis | 0:62d1edcc13d1 | 220 | (u1_t)MAKERPS(SF12, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 221 | (u1_t)MAKERPS(SF11, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 222 | (u1_t)MAKERPS(SF10, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 223 | (u1_t)MAKERPS(SF9, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 224 | (u1_t)MAKERPS(SF8, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 225 | (u1_t)MAKERPS(SF7, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 226 | (u1_t)MAKERPS(SF7, BW250, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 227 | (u1_t)MAKERPS(FSK, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 228 | ILLEGAL_RPS |
mluis | 0:62d1edcc13d1 | 229 | }; |
mluis | 0:62d1edcc13d1 | 230 | |
mluis | 0:62d1edcc13d1 | 231 | static const s1_t TXPOWLEVELS[] = { |
mluis | 0:62d1edcc13d1 | 232 | 20, 14, 11, 8, 5, 2, 0,0, 0,0,0,0, 0,0,0,0 |
mluis | 0:62d1edcc13d1 | 233 | }; |
mluis | 0:62d1edcc13d1 | 234 | #define pow2dBm(mcmd_ladr_p1) (TXPOWLEVELS[(mcmd_ladr_p1&MCMD_LADR_POW_MASK)>>MCMD_LADR_POW_SHIFT]) |
mluis | 0:62d1edcc13d1 | 235 | |
mluis | 1:d3b7bde3995c | 236 | #elif defined(CFG_us915) // ======================================== |
mluis | 0:62d1edcc13d1 | 237 | |
mluis | 0:62d1edcc13d1 | 238 | #define maxFrameLen(dr) ((dr)<=DR_SF11CR ? maxFrameLens[(dr)] : 0xFF) |
mluis | 0:62d1edcc13d1 | 239 | const u1_t maxFrameLens [] = { 24,66,142,255,255,255,255,255, 66,142 }; |
mluis | 0:62d1edcc13d1 | 240 | |
mluis | 0:62d1edcc13d1 | 241 | const u1_t _DR2RPS_CRC[] = { |
mluis | 0:62d1edcc13d1 | 242 | ILLEGAL_RPS, |
mluis | 0:62d1edcc13d1 | 243 | MAKERPS(SF10, BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 244 | MAKERPS(SF9 , BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 245 | MAKERPS(SF8 , BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 246 | MAKERPS(SF7 , BW125, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 247 | MAKERPS(SF8 , BW500, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 248 | ILLEGAL_RPS , |
mluis | 0:62d1edcc13d1 | 249 | ILLEGAL_RPS , |
mluis | 0:62d1edcc13d1 | 250 | ILLEGAL_RPS , |
mluis | 0:62d1edcc13d1 | 251 | MAKERPS(SF12, BW500, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 252 | MAKERPS(SF11, BW500, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 253 | MAKERPS(SF10, BW500, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 254 | MAKERPS(SF9 , BW500, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 255 | MAKERPS(SF8 , BW500, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 256 | MAKERPS(SF7 , BW500, CR_4_5, 0, 0), |
mluis | 0:62d1edcc13d1 | 257 | ILLEGAL_RPS |
mluis | 0:62d1edcc13d1 | 258 | }; |
mluis | 0:62d1edcc13d1 | 259 | |
mluis | 0:62d1edcc13d1 | 260 | #define pow2dBm(mcmd_ladr_p1) ((s1_t)(30 - (((mcmd_ladr_p1)&MCMD_LADR_POW_MASK)<<1))) |
mluis | 0:62d1edcc13d1 | 261 | |
mluis | 0:62d1edcc13d1 | 262 | #endif // ================================================ |
mluis | 0:62d1edcc13d1 | 263 | |
mluis | 0:62d1edcc13d1 | 264 | static const u1_t SENSITIVITY[7][3] = { |
mluis | 0:62d1edcc13d1 | 265 | // ------------bw---------- |
mluis | 0:62d1edcc13d1 | 266 | // 125kHz 250kHz 500kHz |
mluis | 0:62d1edcc13d1 | 267 | { 141-109, 141-109, 141-109 }, // FSK |
mluis | 0:62d1edcc13d1 | 268 | { 141-127, 141-124, 141-121 }, // SF7 |
mluis | 0:62d1edcc13d1 | 269 | { 141-129, 141-126, 141-123 }, // SF8 |
mluis | 0:62d1edcc13d1 | 270 | { 141-132, 141-129, 141-126 }, // SF9 |
mluis | 0:62d1edcc13d1 | 271 | { 141-135, 141-132, 141-129 }, // SF10 |
mluis | 0:62d1edcc13d1 | 272 | { 141-138, 141-135, 141-132 }, // SF11 |
mluis | 0:62d1edcc13d1 | 273 | { 141-141, 141-138, 141-135 } // SF12 |
mluis | 0:62d1edcc13d1 | 274 | }; |
mluis | 0:62d1edcc13d1 | 275 | |
mluis | 0:62d1edcc13d1 | 276 | int getSensitivity (rps_t rps) { |
mluis | 0:62d1edcc13d1 | 277 | return -141 + SENSITIVITY[getSf(rps)][getBw(rps)]; |
mluis | 0:62d1edcc13d1 | 278 | } |
mluis | 0:62d1edcc13d1 | 279 | |
mluis | 0:62d1edcc13d1 | 280 | ostime_t calcAirTime (rps_t rps, u1_t plen) { |
mluis | 0:62d1edcc13d1 | 281 | u1_t bw = getBw(rps); // 0,1,2 = 125,250,500kHz |
mluis | 0:62d1edcc13d1 | 282 | u1_t sf = getSf(rps); // 0=FSK, 1..6 = SF7..12 |
mluis | 0:62d1edcc13d1 | 283 | if( sf == FSK ) { |
mluis | 1:d3b7bde3995c | 284 | return (plen+/*preamble*/5+/*syncword*/3+/*len*/1+/*crc*/2) * /*bits/byte*/8 |
mluis | 1:d3b7bde3995c | 285 | * (s4_t)OSTICKS_PER_SEC / /*kbit/s*/50000; |
mluis | 0:62d1edcc13d1 | 286 | } |
mluis | 0:62d1edcc13d1 | 287 | u1_t sfx = 4*(sf+(7-SF7)); |
mluis | 0:62d1edcc13d1 | 288 | u1_t q = sfx - (sf >= SF11 ? 8 : 0); |
mluis | 0:62d1edcc13d1 | 289 | int tmp = 8*plen - sfx + 28 + (getNocrc(rps)?0:16) - (getIh(rps)?20:0); |
mluis | 0:62d1edcc13d1 | 290 | if( tmp > 0 ) { |
mluis | 1:d3b7bde3995c | 291 | tmp = (tmp + q - 1) / q; |
mluis | 1:d3b7bde3995c | 292 | tmp *= getCr(rps)+5; |
mluis | 1:d3b7bde3995c | 293 | tmp += 8; |
mluis | 0:62d1edcc13d1 | 294 | } else { |
mluis | 1:d3b7bde3995c | 295 | tmp = 8; |
mluis | 0:62d1edcc13d1 | 296 | } |
mluis | 0:62d1edcc13d1 | 297 | tmp = (tmp<<2) + /*preamble*/49 /* 4 * (8 + 4.25) */; |
mluis | 0:62d1edcc13d1 | 298 | // bw = 125000 = 15625 * 2^3 |
mluis | 0:62d1edcc13d1 | 299 | // 250000 = 15625 * 2^4 |
mluis | 0:62d1edcc13d1 | 300 | // 500000 = 15625 * 2^5 |
mluis | 0:62d1edcc13d1 | 301 | // sf = 7..12 |
mluis | 0:62d1edcc13d1 | 302 | // |
mluis | 0:62d1edcc13d1 | 303 | // osticks = tmp * OSTICKS_PER_SEC * 1<<sf / bw |
mluis | 0:62d1edcc13d1 | 304 | // |
mluis | 0:62d1edcc13d1 | 305 | // 3 => counter reduced divisor 125000/8 => 15625 |
mluis | 0:62d1edcc13d1 | 306 | // 2 => counter 2 shift on tmp |
mluis | 0:62d1edcc13d1 | 307 | sfx = sf+(7-SF7) - (3+2) - bw; |
mluis | 0:62d1edcc13d1 | 308 | int div = 15625; |
mluis | 0:62d1edcc13d1 | 309 | if( sfx > 4 ) { |
mluis | 1:d3b7bde3995c | 310 | // prevent 32bit signed int overflow in last step |
mluis | 1:d3b7bde3995c | 311 | div >>= sfx-4; |
mluis | 1:d3b7bde3995c | 312 | sfx = 4; |
mluis | 0:62d1edcc13d1 | 313 | } |
mluis | 0:62d1edcc13d1 | 314 | // Need 32bit arithmetic for this last step |
mluis | 0:62d1edcc13d1 | 315 | return (((ostime_t)tmp << sfx) * OSTICKS_PER_SEC + div/2) / div; |
mluis | 0:62d1edcc13d1 | 316 | } |
mluis | 0:62d1edcc13d1 | 317 | |
mluis | 0:62d1edcc13d1 | 318 | extern inline s1_t rssi2s1 (int v); |
mluis | 0:62d1edcc13d1 | 319 | extern inline int s12rssi (s1_t v); |
mluis | 0:62d1edcc13d1 | 320 | extern inline float s12snr (s1_t v); |
mluis | 0:62d1edcc13d1 | 321 | extern inline s1_t snr2s1 (double v); |
mluis | 0:62d1edcc13d1 | 322 | |
mluis | 0:62d1edcc13d1 | 323 | extern inline rps_t updr2rps (dr_t dr); |
mluis | 0:62d1edcc13d1 | 324 | extern inline rps_t dndr2rps (dr_t dr); |
mluis | 0:62d1edcc13d1 | 325 | extern inline int isFasterDR (dr_t dr1, dr_t dr2); |
mluis | 0:62d1edcc13d1 | 326 | extern inline int isSlowerDR (dr_t dr1, dr_t dr2); |
mluis | 0:62d1edcc13d1 | 327 | extern inline dr_t incDR (dr_t dr); |
mluis | 0:62d1edcc13d1 | 328 | extern inline dr_t decDR (dr_t dr); |
mluis | 0:62d1edcc13d1 | 329 | extern inline dr_t assertDR (dr_t dr); |
mluis | 0:62d1edcc13d1 | 330 | extern inline dr_t validDR (dr_t dr); |
mluis | 0:62d1edcc13d1 | 331 | extern inline dr_t lowerDR (dr_t dr, u1_t n); |
mluis | 0:62d1edcc13d1 | 332 | |
mluis | 0:62d1edcc13d1 | 333 | extern inline sf_t getSf (rps_t params); |
mluis | 0:62d1edcc13d1 | 334 | extern inline rps_t setSf (rps_t params, sf_t sf); |
mluis | 0:62d1edcc13d1 | 335 | extern inline bw_t getBw (rps_t params); |
mluis | 0:62d1edcc13d1 | 336 | extern inline rps_t setBw (rps_t params, bw_t cr); |
mluis | 0:62d1edcc13d1 | 337 | extern inline cr_t getCr (rps_t params); |
mluis | 0:62d1edcc13d1 | 338 | extern inline rps_t setCr (rps_t params, cr_t cr); |
mluis | 0:62d1edcc13d1 | 339 | extern inline int getNocrc (rps_t params); |
mluis | 0:62d1edcc13d1 | 340 | extern inline rps_t setNocrc (rps_t params, int nocrc); |
mluis | 0:62d1edcc13d1 | 341 | extern inline int getIh (rps_t params); |
mluis | 0:62d1edcc13d1 | 342 | extern inline rps_t setIh (rps_t params, int ih); |
mluis | 0:62d1edcc13d1 | 343 | extern inline rps_t makeRps (sf_t sf, bw_t bw, cr_t cr, int ih, int nocrc); |
mluis | 0:62d1edcc13d1 | 344 | extern inline int sameSfBw (rps_t r1, rps_t r2); |
mluis | 0:62d1edcc13d1 | 345 | |
mluis | 0:62d1edcc13d1 | 346 | // END LORA |
mluis | 0:62d1edcc13d1 | 347 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 348 | |
mluis | 0:62d1edcc13d1 | 349 | |
mluis | 0:62d1edcc13d1 | 350 | // Adjust DR for TX retries |
mluis | 0:62d1edcc13d1 | 351 | // - indexed by retry count |
mluis | 0:62d1edcc13d1 | 352 | // - return steps to lower DR |
mluis | 0:62d1edcc13d1 | 353 | static const u1_t DRADJUST[2+TXCONF_ATTEMPTS] = { |
mluis | 0:62d1edcc13d1 | 354 | // normal frames - 1st try / no retry |
mluis | 0:62d1edcc13d1 | 355 | 0, |
mluis | 0:62d1edcc13d1 | 356 | // confirmed frames |
mluis | 1:d3b7bde3995c | 357 | 0,0,1,0,1,0,1,0,0 |
mluis | 0:62d1edcc13d1 | 358 | }; |
mluis | 0:62d1edcc13d1 | 359 | |
mluis | 0:62d1edcc13d1 | 360 | |
mluis | 0:62d1edcc13d1 | 361 | // Table below defines the size of one symbol as |
mluis | 0:62d1edcc13d1 | 362 | // symtime = 256us * 2^T(sf,bw) |
mluis | 0:62d1edcc13d1 | 363 | // 256us is called one symunit. |
mluis | 1:d3b7bde3995c | 364 | // SF: |
mluis | 1:d3b7bde3995c | 365 | // BW: |__7___8___9__10__11__12 |
mluis | 1:d3b7bde3995c | 366 | // 125kHz | 2 3 4 5 6 7 |
mluis | 1:d3b7bde3995c | 367 | // 250kHz | 1 2 3 4 5 6 |
mluis | 1:d3b7bde3995c | 368 | // 500kHz | 0 1 2 3 4 5 |
mluis | 0:62d1edcc13d1 | 369 | // |
mluis | 0:62d1edcc13d1 | 370 | // Times for half symbol per DR |
mluis | 0:62d1edcc13d1 | 371 | // Per DR table to minimize rounding errors |
mluis | 0:62d1edcc13d1 | 372 | static const ostime_t DR2HSYM_osticks[] = { |
mluis | 1:d3b7bde3995c | 373 | #if defined(CFG_eu868) |
mluis | 0:62d1edcc13d1 | 374 | #define dr2hsym(dr) (DR2HSYM_osticks[(dr)]) |
mluis | 0:62d1edcc13d1 | 375 | us2osticksRound(128<<7), // DR_SF12 |
mluis | 0:62d1edcc13d1 | 376 | us2osticksRound(128<<6), // DR_SF11 |
mluis | 0:62d1edcc13d1 | 377 | us2osticksRound(128<<5), // DR_SF10 |
mluis | 0:62d1edcc13d1 | 378 | us2osticksRound(128<<4), // DR_SF9 |
mluis | 0:62d1edcc13d1 | 379 | us2osticksRound(128<<3), // DR_SF8 |
mluis | 0:62d1edcc13d1 | 380 | us2osticksRound(128<<2), // DR_SF7 |
mluis | 0:62d1edcc13d1 | 381 | us2osticksRound(128<<1), // DR_SF7B |
mluis | 0:62d1edcc13d1 | 382 | us2osticksRound(80) // FSK -- not used (time for 1/2 byte) |
mluis | 1:d3b7bde3995c | 383 | #elif defined(CFG_us915) |
mluis | 0:62d1edcc13d1 | 384 | #define dr2hsym(dr) (DR2HSYM_osticks[(dr)&7]) // map DR_SFnCR -> 0-6 |
mluis | 0:62d1edcc13d1 | 385 | us2osticksRound(128<<5), // DR_SF10 DR_SF12CR |
mluis | 0:62d1edcc13d1 | 386 | us2osticksRound(128<<4), // DR_SF9 DR_SF11CR |
mluis | 0:62d1edcc13d1 | 387 | us2osticksRound(128<<3), // DR_SF8 DR_SF10CR |
mluis | 0:62d1edcc13d1 | 388 | us2osticksRound(128<<2), // DR_SF7 DR_SF9CR |
mluis | 0:62d1edcc13d1 | 389 | us2osticksRound(128<<1), // DR_SF8C DR_SF8CR |
mluis | 0:62d1edcc13d1 | 390 | us2osticksRound(128<<0) // ------ DR_SF7CR |
mluis | 0:62d1edcc13d1 | 391 | #endif |
mluis | 0:62d1edcc13d1 | 392 | }; |
mluis | 0:62d1edcc13d1 | 393 | |
mluis | 0:62d1edcc13d1 | 394 | |
mluis | 0:62d1edcc13d1 | 395 | static ostime_t calcRxWindow (u1_t secs, dr_t dr) { |
mluis | 0:62d1edcc13d1 | 396 | ostime_t rxoff, err; |
mluis | 0:62d1edcc13d1 | 397 | if( secs==0 ) { |
mluis | 1:d3b7bde3995c | 398 | // aka 128 secs (next becaon) |
mluis | 1:d3b7bde3995c | 399 | rxoff = LMIC.drift; |
mluis | 1:d3b7bde3995c | 400 | err = LMIC.lastDriftDiff; |
mluis | 0:62d1edcc13d1 | 401 | } else { |
mluis | 1:d3b7bde3995c | 402 | // scheduled RX window within secs into current beacon period |
mluis | 1:d3b7bde3995c | 403 | rxoff = (LMIC.drift * (ostime_t)secs) >> BCN_INTV_exp; |
mluis | 1:d3b7bde3995c | 404 | err = (LMIC.lastDriftDiff * (ostime_t)secs) >> BCN_INTV_exp; |
mluis | 0:62d1edcc13d1 | 405 | } |
mluis | 0:62d1edcc13d1 | 406 | u1_t rxsyms = MINRX_SYMS; |
mluis | 0:62d1edcc13d1 | 407 | err += (ostime_t)LMIC.maxDriftDiff * LMIC.missedBcns; |
mluis | 0:62d1edcc13d1 | 408 | LMIC.rxsyms = MINRX_SYMS + (err / dr2hsym(dr)); |
mluis | 0:62d1edcc13d1 | 409 | |
mluis | 0:62d1edcc13d1 | 410 | return (rxsyms-PAMBL_SYMS) * dr2hsym(dr) + rxoff; |
mluis | 0:62d1edcc13d1 | 411 | } |
mluis | 0:62d1edcc13d1 | 412 | |
mluis | 0:62d1edcc13d1 | 413 | |
mluis | 0:62d1edcc13d1 | 414 | // Setup beacon RX parameters assuming we have an error of ms (aka +/-(ms/2)) |
mluis | 0:62d1edcc13d1 | 415 | static void calcBcnRxWindowFromMillis (u1_t ms, bit_t ini) { |
mluis | 0:62d1edcc13d1 | 416 | if( ini ) { |
mluis | 1:d3b7bde3995c | 417 | LMIC.drift = 0; |
mluis | 1:d3b7bde3995c | 418 | LMIC.maxDriftDiff = 0; |
mluis | 1:d3b7bde3995c | 419 | LMIC.missedBcns = 0; |
mluis | 1:d3b7bde3995c | 420 | LMIC.bcninfo.flags |= BCN_NODRIFT|BCN_NODDIFF; |
mluis | 0:62d1edcc13d1 | 421 | } |
mluis | 0:62d1edcc13d1 | 422 | ostime_t hsym = dr2hsym(DR_BCN); |
mluis | 0:62d1edcc13d1 | 423 | LMIC.bcnRxsyms = MINRX_SYMS + ms2osticksCeil(ms) / hsym; |
mluis | 0:62d1edcc13d1 | 424 | LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - (LMIC.bcnRxsyms-PAMBL_SYMS) * hsym; |
mluis | 0:62d1edcc13d1 | 425 | } |
mluis | 0:62d1edcc13d1 | 426 | |
mluis | 0:62d1edcc13d1 | 427 | |
mluis | 0:62d1edcc13d1 | 428 | // Setup scheduled RX window (ping/multicast slot) |
mluis | 0:62d1edcc13d1 | 429 | static void rxschedInit (xref2rxsched_t rxsched) { |
mluis | 0:62d1edcc13d1 | 430 | os_clearMem(AESkey,16); |
mluis | 0:62d1edcc13d1 | 431 | os_clearMem(LMIC.frame+8,8); |
mluis | 0:62d1edcc13d1 | 432 | os_wlsbf4(LMIC.frame, LMIC.bcninfo.time); |
mluis | 0:62d1edcc13d1 | 433 | os_wlsbf4(LMIC.frame+4, LMIC.devaddr); |
mluis | 0:62d1edcc13d1 | 434 | os_aes(AES_ENC,LMIC.frame,16); |
mluis | 0:62d1edcc13d1 | 435 | u1_t intvExp = rxsched->intvExp; |
mluis | 0:62d1edcc13d1 | 436 | ostime_t off = os_rlsbf2(LMIC.frame) & (0x0FFF >> (7 - intvExp)); // random offset (slot units) |
mluis | 0:62d1edcc13d1 | 437 | rxsched->rxbase = (LMIC.bcninfo.txtime + |
mluis | 1:d3b7bde3995c | 438 | BCN_RESERVE_osticks + |
mluis | 1:d3b7bde3995c | 439 | ms2osticks(BCN_SLOT_SPAN_ms * off)); // random offset osticks |
mluis | 0:62d1edcc13d1 | 440 | rxsched->slot = 0; |
mluis | 0:62d1edcc13d1 | 441 | rxsched->rxtime = rxsched->rxbase - calcRxWindow(/*secs BCN_RESERVE*/2+(1<<intvExp),rxsched->dr); |
mluis | 0:62d1edcc13d1 | 442 | rxsched->rxsyms = LMIC.rxsyms; |
mluis | 0:62d1edcc13d1 | 443 | } |
mluis | 0:62d1edcc13d1 | 444 | |
mluis | 0:62d1edcc13d1 | 445 | |
mluis | 0:62d1edcc13d1 | 446 | static bit_t rxschedNext (xref2rxsched_t rxsched, ostime_t cando) { |
mluis | 0:62d1edcc13d1 | 447 | again: |
mluis | 0:62d1edcc13d1 | 448 | if( rxsched->rxtime - cando >= 0 ) |
mluis | 1:d3b7bde3995c | 449 | return 1; |
mluis | 0:62d1edcc13d1 | 450 | u1_t slot; |
mluis | 0:62d1edcc13d1 | 451 | if( (slot=rxsched->slot) >= 128 ) |
mluis | 1:d3b7bde3995c | 452 | return 0; |
mluis | 0:62d1edcc13d1 | 453 | u1_t intv = 1<<rxsched->intvExp; |
mluis | 0:62d1edcc13d1 | 454 | if( (rxsched->slot = (slot += (intv))) >= 128 ) |
mluis | 1:d3b7bde3995c | 455 | return 0; |
mluis | 0:62d1edcc13d1 | 456 | rxsched->rxtime = rxsched->rxbase |
mluis | 1:d3b7bde3995c | 457 | + ((BCN_WINDOW_osticks * (ostime_t)slot) >> BCN_INTV_exp) |
mluis | 1:d3b7bde3995c | 458 | - calcRxWindow(/*secs BCN_RESERVE*/2+slot+intv,rxsched->dr); |
mluis | 0:62d1edcc13d1 | 459 | rxsched->rxsyms = LMIC.rxsyms; |
mluis | 0:62d1edcc13d1 | 460 | goto again; |
mluis | 0:62d1edcc13d1 | 461 | } |
mluis | 0:62d1edcc13d1 | 462 | |
mluis | 0:62d1edcc13d1 | 463 | |
mluis | 0:62d1edcc13d1 | 464 | static ostime_t rndDelay (u1_t secSpan) { |
mluis | 0:62d1edcc13d1 | 465 | u2_t r = os_getRndU2(); |
mluis | 0:62d1edcc13d1 | 466 | ostime_t delay = r; |
mluis | 0:62d1edcc13d1 | 467 | if( delay > OSTICKS_PER_SEC ) |
mluis | 1:d3b7bde3995c | 468 | delay = r % (u2_t)OSTICKS_PER_SEC; |
mluis | 0:62d1edcc13d1 | 469 | if( secSpan > 0 ) |
mluis | 1:d3b7bde3995c | 470 | delay += ((u1_t)r % secSpan) * OSTICKS_PER_SEC; |
mluis | 0:62d1edcc13d1 | 471 | return delay; |
mluis | 0:62d1edcc13d1 | 472 | } |
mluis | 0:62d1edcc13d1 | 473 | |
mluis | 0:62d1edcc13d1 | 474 | |
mluis | 0:62d1edcc13d1 | 475 | static void txDelay (ostime_t reftime, u1_t secSpan) { |
mluis | 0:62d1edcc13d1 | 476 | reftime += rndDelay(secSpan); |
mluis | 0:62d1edcc13d1 | 477 | if( LMIC.globalDutyRate == 0 || (reftime - LMIC.globalDutyAvail) > 0 ) { |
mluis | 1:d3b7bde3995c | 478 | LMIC.globalDutyAvail = reftime; |
mluis | 1:d3b7bde3995c | 479 | LMIC.opmode |= OP_RNDTX; |
mluis | 0:62d1edcc13d1 | 480 | } |
mluis | 0:62d1edcc13d1 | 481 | } |
mluis | 0:62d1edcc13d1 | 482 | |
mluis | 0:62d1edcc13d1 | 483 | |
mluis | 0:62d1edcc13d1 | 484 | static void setDrJoin (u1_t reason, u1_t dr) { |
mluis | 0:62d1edcc13d1 | 485 | EV(drChange, INFO, (e_.reason = reason, |
mluis | 1:d3b7bde3995c | 486 | e_.deveui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 487 | e_.dr = dr|DR_PAGE, |
mluis | 1:d3b7bde3995c | 488 | e_.txpow = LMIC.adrTxPow, |
mluis | 1:d3b7bde3995c | 489 | e_.prevdr = LMIC.datarate|DR_PAGE, |
mluis | 1:d3b7bde3995c | 490 | e_.prevtxpow = LMIC.adrTxPow)); |
mluis | 0:62d1edcc13d1 | 491 | LMIC.datarate = dr; |
mluis | 1:d3b7bde3995c | 492 | DO_DEVDB(LMIC.datarate,datarate); |
mluis | 0:62d1edcc13d1 | 493 | } |
mluis | 0:62d1edcc13d1 | 494 | |
mluis | 0:62d1edcc13d1 | 495 | |
mluis | 0:62d1edcc13d1 | 496 | static void setDrTxpow (u1_t reason, u1_t dr, s1_t pow) { |
mluis | 0:62d1edcc13d1 | 497 | EV(drChange, INFO, (e_.reason = reason, |
mluis | 1:d3b7bde3995c | 498 | e_.deveui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 499 | e_.dr = dr|DR_PAGE, |
mluis | 1:d3b7bde3995c | 500 | e_.txpow = pow, |
mluis | 1:d3b7bde3995c | 501 | e_.prevdr = LMIC.datarate|DR_PAGE, |
mluis | 1:d3b7bde3995c | 502 | e_.prevtxpow = LMIC.adrTxPow)); |
mluis | 1:d3b7bde3995c | 503 | |
mluis | 0:62d1edcc13d1 | 504 | if( pow != KEEP_TXPOW ) |
mluis | 1:d3b7bde3995c | 505 | LMIC.adrTxPow = pow; |
mluis | 1:d3b7bde3995c | 506 | if( LMIC.datarate != dr ) { |
mluis | 1:d3b7bde3995c | 507 | LMIC.datarate = dr; |
mluis | 1:d3b7bde3995c | 508 | DO_DEVDB(LMIC.datarate,datarate); |
mluis | 1:d3b7bde3995c | 509 | LMIC.opmode |= OP_NEXTCHNL; |
mluis | 1:d3b7bde3995c | 510 | } |
mluis | 0:62d1edcc13d1 | 511 | } |
mluis | 0:62d1edcc13d1 | 512 | |
mluis | 0:62d1edcc13d1 | 513 | |
mluis | 0:62d1edcc13d1 | 514 | void LMIC_stopPingable (void) { |
mluis | 0:62d1edcc13d1 | 515 | LMIC.opmode &= ~(OP_PINGABLE|OP_PINGINI); |
mluis | 0:62d1edcc13d1 | 516 | } |
mluis | 0:62d1edcc13d1 | 517 | |
mluis | 0:62d1edcc13d1 | 518 | |
mluis | 0:62d1edcc13d1 | 519 | void LMIC_setPingable (u1_t intvExp) { |
mluis | 0:62d1edcc13d1 | 520 | // Change setting |
mluis | 0:62d1edcc13d1 | 521 | LMIC.ping.intvExp = (intvExp & 0x7); |
mluis | 0:62d1edcc13d1 | 522 | LMIC.opmode |= OP_PINGABLE; |
mluis | 0:62d1edcc13d1 | 523 | // App may call LMIC_enableTracking() explicitely before |
mluis | 0:62d1edcc13d1 | 524 | // Otherwise tracking is implicitly enabled here |
mluis | 0:62d1edcc13d1 | 525 | if( (LMIC.opmode & (OP_TRACK|OP_SCAN)) == 0 && LMIC.bcninfoTries == 0 ) |
mluis | 1:d3b7bde3995c | 526 | LMIC_enableTracking(0); |
mluis | 0:62d1edcc13d1 | 527 | } |
mluis | 0:62d1edcc13d1 | 528 | |
mluis | 0:62d1edcc13d1 | 529 | |
mluis | 1:d3b7bde3995c | 530 | #if defined(CFG_eu868) |
mluis | 0:62d1edcc13d1 | 531 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 532 | // |
mluis | 0:62d1edcc13d1 | 533 | // BEG: EU868 related stuff |
mluis | 0:62d1edcc13d1 | 534 | // |
mluis | 1:d3b7bde3995c | 535 | enum { NUM_DEFAULT_CHANNELS=6 }; |
mluis | 0:62d1edcc13d1 | 536 | static const u4_t iniChannelFreq[12] = { |
mluis | 0:62d1edcc13d1 | 537 | // Join frequencies and duty cycle limit (0.1%) |
mluis | 1:d3b7bde3995c | 538 | EU868_F1|BAND_MILLI, EU868_J4|BAND_MILLI, |
mluis | 1:d3b7bde3995c | 539 | EU868_F2|BAND_MILLI, EU868_J5|BAND_MILLI, |
mluis | 1:d3b7bde3995c | 540 | EU868_F3|BAND_MILLI, EU868_J6|BAND_MILLI, |
mluis | 0:62d1edcc13d1 | 541 | // Default operational frequencies |
mluis | 0:62d1edcc13d1 | 542 | EU868_F1|BAND_CENTI, EU868_F2|BAND_CENTI, EU868_F3|BAND_CENTI, |
mluis | 0:62d1edcc13d1 | 543 | EU868_F4|BAND_MILLI, EU868_F5|BAND_MILLI, EU868_F6|BAND_DECI |
mluis | 0:62d1edcc13d1 | 544 | }; |
mluis | 0:62d1edcc13d1 | 545 | |
mluis | 0:62d1edcc13d1 | 546 | static void initDefaultChannels (bit_t join) { |
mluis | 1:d3b7bde3995c | 547 | os_clearMem(&LMIC.channelFreq, sizeof(LMIC.channelFreq)); |
mluis | 1:d3b7bde3995c | 548 | os_clearMem(&LMIC.channelDrMap, sizeof(LMIC.channelDrMap)); |
mluis | 1:d3b7bde3995c | 549 | os_clearMem(&LMIC.bands, sizeof(LMIC.bands)); |
mluis | 1:d3b7bde3995c | 550 | |
mluis | 1:d3b7bde3995c | 551 | LMIC.channelMap = 0x1F; |
mluis | 0:62d1edcc13d1 | 552 | u1_t su = join ? 0 : 6; |
mluis | 0:62d1edcc13d1 | 553 | for( u1_t fu=0; fu<6; fu++,su++ ) { |
mluis | 1:d3b7bde3995c | 554 | LMIC.channelFreq[fu] = iniChannelFreq[su]; |
mluis | 1:d3b7bde3995c | 555 | LMIC.channelDrMap[fu] = DR_RANGE_MAP(DR_SF12,DR_SF7); |
mluis | 0:62d1edcc13d1 | 556 | } |
mluis | 1:d3b7bde3995c | 557 | if( !join ) { |
mluis | 1:d3b7bde3995c | 558 | LMIC.channelDrMap[5] = DR_RANGE_MAP(DR_SF12,DR_SF7); |
mluis | 1:d3b7bde3995c | 559 | LMIC.channelDrMap[1] = DR_RANGE_MAP(DR_SF12,DR_FSK); |
mluis | 1:d3b7bde3995c | 560 | } |
mluis | 0:62d1edcc13d1 | 561 | |
mluis | 1:d3b7bde3995c | 562 | LMIC.bands[BAND_MILLI].txcap = 1000; // 0.1% |
mluis | 1:d3b7bde3995c | 563 | LMIC.bands[BAND_MILLI].txpow = 14; |
mluis | 1:d3b7bde3995c | 564 | LMIC.bands[BAND_MILLI].lastchnl = os_getRndU1() % MAX_CHANNELS; |
mluis | 1:d3b7bde3995c | 565 | LMIC.bands[BAND_CENTI].txcap = 100; // 1% |
mluis | 1:d3b7bde3995c | 566 | LMIC.bands[BAND_CENTI].txpow = 14; |
mluis | 1:d3b7bde3995c | 567 | LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS; |
mluis | 1:d3b7bde3995c | 568 | LMIC.bands[BAND_DECI ].txcap = 10; // 10% |
mluis | 1:d3b7bde3995c | 569 | LMIC.bands[BAND_DECI ].txpow = 27; |
mluis | 1:d3b7bde3995c | 570 | LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS; |
mluis | 0:62d1edcc13d1 | 571 | LMIC.bands[BAND_MILLI].avail = |
mluis | 0:62d1edcc13d1 | 572 | LMIC.bands[BAND_CENTI].avail = |
mluis | 0:62d1edcc13d1 | 573 | LMIC.bands[BAND_DECI ].avail = os_getTime(); |
mluis | 0:62d1edcc13d1 | 574 | } |
mluis | 0:62d1edcc13d1 | 575 | |
mluis | 1:d3b7bde3995c | 576 | bit_t LMIC_setupBand (u1_t bandidx, s1_t txpow, u2_t txcap) { |
mluis | 1:d3b7bde3995c | 577 | if( bandidx > BAND_AUX ) return 0; |
mluis | 1:d3b7bde3995c | 578 | band_t* b = &LMIC.bands[bandidx]; |
mluis | 1:d3b7bde3995c | 579 | b->txpow = txpow; |
mluis | 1:d3b7bde3995c | 580 | b->txcap = txcap; |
mluis | 1:d3b7bde3995c | 581 | b->avail = os_getTime(); |
mluis | 1:d3b7bde3995c | 582 | b->lastchnl = os_getRndU1() % MAX_CHANNELS; |
mluis | 1:d3b7bde3995c | 583 | return 1; |
mluis | 1:d3b7bde3995c | 584 | } |
mluis | 1:d3b7bde3995c | 585 | |
mluis | 1:d3b7bde3995c | 586 | bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) { |
mluis | 1:d3b7bde3995c | 587 | if( chidx >= MAX_CHANNELS ) |
mluis | 1:d3b7bde3995c | 588 | return 0; |
mluis | 1:d3b7bde3995c | 589 | if( band == -1 ) { |
mluis | 1:d3b7bde3995c | 590 | if( freq >= 869400000 && freq <= 869650000 ) |
mluis | 1:d3b7bde3995c | 591 | freq |= BAND_DECI; // 10% 27dBm |
mluis | 1:d3b7bde3995c | 592 | else if( (freq >= 868000000 && freq <= 868600000) || |
mluis | 1:d3b7bde3995c | 593 | (freq >= 869700000 && freq <= 870000000) ) |
mluis | 1:d3b7bde3995c | 594 | freq |= BAND_CENTI; // 1% 14dBm |
mluis | 1:d3b7bde3995c | 595 | else |
mluis | 1:d3b7bde3995c | 596 | freq |= BAND_MILLI; // 0.1% 14dBm |
mluis | 1:d3b7bde3995c | 597 | } else { |
mluis | 1:d3b7bde3995c | 598 | if( band > BAND_AUX ) return 0; |
mluis | 1:d3b7bde3995c | 599 | freq = (freq&~3) | band; |
mluis | 1:d3b7bde3995c | 600 | } |
mluis | 1:d3b7bde3995c | 601 | LMIC.channelFreq [chidx] = freq; |
mluis | 1:d3b7bde3995c | 602 | LMIC.channelDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF12,DR_SF7) : drmap; |
mluis | 1:d3b7bde3995c | 603 | LMIC.channelMap |= 1<<chidx; // enabled right away |
mluis | 1:d3b7bde3995c | 604 | return 1; |
mluis | 1:d3b7bde3995c | 605 | } |
mluis | 1:d3b7bde3995c | 606 | |
mluis | 1:d3b7bde3995c | 607 | void LMIC_disableChannel (u1_t channel) { |
mluis | 1:d3b7bde3995c | 608 | LMIC.channelFreq[channel] = 0; |
mluis | 1:d3b7bde3995c | 609 | LMIC.channelDrMap[channel] = 0; |
mluis | 1:d3b7bde3995c | 610 | LMIC.channelMap &= ~(1<<channel); |
mluis | 1:d3b7bde3995c | 611 | } |
mluis | 1:d3b7bde3995c | 612 | |
mluis | 0:62d1edcc13d1 | 613 | static u4_t convFreq (xref2u1_t ptr) { |
mluis | 0:62d1edcc13d1 | 614 | u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100; |
mluis | 1:d3b7bde3995c | 615 | if( freq < EU868_FREQ_MIN || freq > EU868_FREQ_MAX ) |
mluis | 1:d3b7bde3995c | 616 | freq = 0; |
mluis | 0:62d1edcc13d1 | 617 | return freq; |
mluis | 0:62d1edcc13d1 | 618 | } |
mluis | 0:62d1edcc13d1 | 619 | |
mluis | 0:62d1edcc13d1 | 620 | static u1_t mapChannels (u1_t chpage, u2_t chmap) { |
mluis | 1:d3b7bde3995c | 621 | // Bad page, disable all channel, enable non-existent |
mluis | 1:d3b7bde3995c | 622 | if( chpage != 0 || chmap==0 || (chmap & ~LMIC.channelMap) != 0 ) |
mluis | 1:d3b7bde3995c | 623 | return 0; // illegal input |
mluis | 0:62d1edcc13d1 | 624 | for( u1_t chnl=0; chnl<MAX_CHANNELS; chnl++ ) { |
mluis | 1:d3b7bde3995c | 625 | if( (chmap & (1<<chnl)) != 0 && LMIC.channelFreq[chnl] == 0 ) |
mluis | 1:d3b7bde3995c | 626 | chmap &= ~(1<<chnl); // ignore - channel is not defined |
mluis | 0:62d1edcc13d1 | 627 | } |
mluis | 0:62d1edcc13d1 | 628 | LMIC.channelMap = chmap; |
mluis | 0:62d1edcc13d1 | 629 | return 1; |
mluis | 0:62d1edcc13d1 | 630 | } |
mluis | 0:62d1edcc13d1 | 631 | |
mluis | 0:62d1edcc13d1 | 632 | |
mluis | 0:62d1edcc13d1 | 633 | static void updateTx (ostime_t txbeg) { |
mluis | 0:62d1edcc13d1 | 634 | u4_t freq = LMIC.channelFreq[LMIC.txChnl]; |
mluis | 0:62d1edcc13d1 | 635 | // Update global/band specific duty cycle stats |
mluis | 0:62d1edcc13d1 | 636 | ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen); |
mluis | 0:62d1edcc13d1 | 637 | // Update channel/global duty cycle stats |
mluis | 0:62d1edcc13d1 | 638 | xref2band_t band = &LMIC.bands[freq & 0x3]; |
mluis | 0:62d1edcc13d1 | 639 | LMIC.freq = freq & ~(u4_t)3; |
mluis | 0:62d1edcc13d1 | 640 | LMIC.txpow = band->txpow; |
mluis | 0:62d1edcc13d1 | 641 | band->avail = txbeg + airtime * band->txcap; |
mluis | 0:62d1edcc13d1 | 642 | if( LMIC.globalDutyRate != 0 ) |
mluis | 1:d3b7bde3995c | 643 | LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate); |
mluis | 0:62d1edcc13d1 | 644 | } |
mluis | 0:62d1edcc13d1 | 645 | |
mluis | 0:62d1edcc13d1 | 646 | static ostime_t nextTx (ostime_t now) { |
mluis | 1:d3b7bde3995c | 647 | u1_t bmap=0xF; |
mluis | 1:d3b7bde3995c | 648 | do { |
mluis | 1:d3b7bde3995c | 649 | ostime_t mintime = now + /*10h*/36000*OSTICKS_PER_SEC; |
mluis | 1:d3b7bde3995c | 650 | u1_t band=0; |
mluis | 1:d3b7bde3995c | 651 | for( u1_t bi=0; bi<4; bi++ ) { |
mluis | 1:d3b7bde3995c | 652 | if( (bmap & (1<<bi)) && mintime - LMIC.bands[bi].avail > 0 ) |
mluis | 1:d3b7bde3995c | 653 | mintime = LMIC.bands[band = bi].avail; |
mluis | 0:62d1edcc13d1 | 654 | } |
mluis | 1:d3b7bde3995c | 655 | // Find next channel in given band |
mluis | 1:d3b7bde3995c | 656 | u1_t chnl = LMIC.bands[band].lastchnl; |
mluis | 1:d3b7bde3995c | 657 | for( u1_t ci=0; ci<MAX_CHANNELS; ci++ ) { |
mluis | 1:d3b7bde3995c | 658 | if( (chnl = (chnl+1)) >= MAX_CHANNELS ) |
mluis | 1:d3b7bde3995c | 659 | chnl -= MAX_CHANNELS; |
mluis | 1:d3b7bde3995c | 660 | if( (LMIC.channelMap & (1<<chnl)) != 0 && // channel enabled |
mluis | 1:d3b7bde3995c | 661 | (LMIC.channelDrMap[chnl] & (1<<(LMIC.datarate&0xF))) != 0 && |
mluis | 1:d3b7bde3995c | 662 | band == (LMIC.channelFreq[chnl] & 0x3) ) { // in selected band |
mluis | 1:d3b7bde3995c | 663 | LMIC.txChnl = LMIC.bands[band].lastchnl = chnl; |
mluis | 1:d3b7bde3995c | 664 | return mintime; |
mluis | 1:d3b7bde3995c | 665 | } |
mluis | 0:62d1edcc13d1 | 666 | } |
mluis | 1:d3b7bde3995c | 667 | if( (bmap &= ~(1<<band)) == 0 ) { |
mluis | 1:d3b7bde3995c | 668 | // No feasible channel found! |
mluis | 1:d3b7bde3995c | 669 | return mintime; |
mluis | 1:d3b7bde3995c | 670 | } |
mluis | 0:62d1edcc13d1 | 671 | } while(1); |
mluis | 0:62d1edcc13d1 | 672 | } |
mluis | 0:62d1edcc13d1 | 673 | |
mluis | 1:d3b7bde3995c | 674 | |
mluis | 0:62d1edcc13d1 | 675 | static void setBcnRxParams (void) { |
mluis | 0:62d1edcc13d1 | 676 | LMIC.dataLen = 0; |
mluis | 0:62d1edcc13d1 | 677 | LMIC.freq = LMIC.channelFreq[LMIC.bcnChnl] & ~(u4_t)3; |
mluis | 0:62d1edcc13d1 | 678 | LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN); |
mluis | 0:62d1edcc13d1 | 679 | } |
mluis | 0:62d1edcc13d1 | 680 | |
mluis | 0:62d1edcc13d1 | 681 | #define setRx1Params() /*LMIC.freq/rps remain unchanged*/ |
mluis | 0:62d1edcc13d1 | 682 | |
mluis | 0:62d1edcc13d1 | 683 | static void initJoinLoop (void) { |
mluis | 1:d3b7bde3995c | 684 | LMIC.txChnl = os_getRndU1() % 6; |
mluis | 0:62d1edcc13d1 | 685 | LMIC.adrTxPow = 14; |
mluis | 0:62d1edcc13d1 | 686 | setDrJoin(DRCHG_SET, DR_SF7); |
mluis | 0:62d1edcc13d1 | 687 | initDefaultChannels(1); |
mluis | 0:62d1edcc13d1 | 688 | ASSERT((LMIC.opmode & OP_NEXTCHNL)==0); |
mluis | 1:d3b7bde3995c | 689 | LMIC.txend = LMIC.bands[BAND_MILLI].avail + rndDelay(8); |
mluis | 0:62d1edcc13d1 | 690 | } |
mluis | 0:62d1edcc13d1 | 691 | |
mluis | 0:62d1edcc13d1 | 692 | static ostime_t nextJoinState (void) { |
mluis | 1:d3b7bde3995c | 693 | u1_t failed = 0; |
mluis | 1:d3b7bde3995c | 694 | |
mluis | 0:62d1edcc13d1 | 695 | // Try 869.x and then 864.x with same DR |
mluis | 0:62d1edcc13d1 | 696 | // If both fail try next lower datarate |
mluis | 1:d3b7bde3995c | 697 | if( ++LMIC.txChnl == 6 ) |
mluis | 1:d3b7bde3995c | 698 | LMIC.txChnl = 0; |
mluis | 1:d3b7bde3995c | 699 | if( (++LMIC.txCnt & 1) == 0 ) { |
mluis | 1:d3b7bde3995c | 700 | // Lower DR every 2nd try (having tried 868.x and 864.x with the same DR) |
mluis | 1:d3b7bde3995c | 701 | if( LMIC.datarate == DR_SF12 ) |
mluis | 1:d3b7bde3995c | 702 | failed = 1; // we have tried all DR - signal EV_JOIN_FAILED |
mluis | 1:d3b7bde3995c | 703 | else |
mluis | 1:d3b7bde3995c | 704 | setDrJoin(DRCHG_NOJACC, decDR((dr_t)LMIC.datarate)); |
mluis | 1:d3b7bde3995c | 705 | } |
mluis | 1:d3b7bde3995c | 706 | // Clear NEXTCHNL because join state engine controls channel hopping |
mluis | 0:62d1edcc13d1 | 707 | LMIC.opmode &= ~OP_NEXTCHNL; |
mluis | 1:d3b7bde3995c | 708 | // Move txend to randomize synchronized concurrent joins. |
mluis | 1:d3b7bde3995c | 709 | // Duty cycle is based on txend. |
mluis | 1:d3b7bde3995c | 710 | ostime_t time = os_getTime(); |
mluis | 1:d3b7bde3995c | 711 | if( time - LMIC.bands[BAND_MILLI].avail < 0 ) |
mluis | 1:d3b7bde3995c | 712 | time = LMIC.bands[BAND_MILLI].avail; |
mluis | 1:d3b7bde3995c | 713 | LMIC.txend = time + |
mluis | 1:d3b7bde3995c | 714 | (isTESTMODE() |
mluis | 1:d3b7bde3995c | 715 | // Avoid collision with JOIN ACCEPT @ SF12 being sent by GW (but we missed it) |
mluis | 1:d3b7bde3995c | 716 | ? DNW2_SAFETY_ZONE |
mluis | 1:d3b7bde3995c | 717 | // Otherwise: randomize join (street lamp case): |
mluis | 1:d3b7bde3995c | 718 | // SF12:255, SF11:127, .., SF7:8secs |
mluis | 1:d3b7bde3995c | 719 | : DNW2_SAFETY_ZONE+rndDelay(255>>LMIC.datarate)); |
mluis | 1:d3b7bde3995c | 720 | // 1 - triggers EV_JOIN_FAILED event |
mluis | 1:d3b7bde3995c | 721 | return failed; |
mluis | 0:62d1edcc13d1 | 722 | } |
mluis | 0:62d1edcc13d1 | 723 | |
mluis | 0:62d1edcc13d1 | 724 | // |
mluis | 0:62d1edcc13d1 | 725 | // END: EU868 related stuff |
mluis | 0:62d1edcc13d1 | 726 | // |
mluis | 0:62d1edcc13d1 | 727 | // ================================================================================ |
mluis | 1:d3b7bde3995c | 728 | #elif defined(CFG_us915) |
mluis | 0:62d1edcc13d1 | 729 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 730 | // |
mluis | 0:62d1edcc13d1 | 731 | // BEG: US915 related stuff |
mluis | 0:62d1edcc13d1 | 732 | // |
mluis | 0:62d1edcc13d1 | 733 | |
mluis | 1:d3b7bde3995c | 734 | |
mluis | 0:62d1edcc13d1 | 735 | static void initDefaultChannels (void) { |
mluis | 0:62d1edcc13d1 | 736 | for( u1_t i=0; i<4; i++ ) |
mluis | 1:d3b7bde3995c | 737 | LMIC.channelMap[i] = 0xFFFF; |
mluis | 0:62d1edcc13d1 | 738 | LMIC.channelMap[4] = 0x00FF; |
mluis | 0:62d1edcc13d1 | 739 | } |
mluis | 0:62d1edcc13d1 | 740 | |
mluis | 0:62d1edcc13d1 | 741 | static u4_t convFreq (xref2u1_t ptr) { |
mluis | 0:62d1edcc13d1 | 742 | u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100; |
mluis | 3:519c71d29a06 | 743 | if( freq < US915_FREQ_MIN || freq > US915_FREQ_MAX ) |
mluis | 1:d3b7bde3995c | 744 | freq = 0; |
mluis | 0:62d1edcc13d1 | 745 | return freq; |
mluis | 0:62d1edcc13d1 | 746 | } |
mluis | 0:62d1edcc13d1 | 747 | |
mluis | 3:519c71d29a06 | 748 | |
mluis | 1:d3b7bde3995c | 749 | bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) { |
mluis | 0:62d1edcc13d1 | 750 | if( chidx < 72 || chidx >= 72+MAX_XCHANNELS ) |
mluis | 1:d3b7bde3995c | 751 | return 0; // channels 0..71 are hardwired |
mluis | 0:62d1edcc13d1 | 752 | chidx -= 72; |
mluis | 0:62d1edcc13d1 | 753 | LMIC.xchFreq[chidx] = freq; |
mluis | 1:d3b7bde3995c | 754 | LMIC.xchDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF10,DR_SF8C) : drmap; |
mluis | 0:62d1edcc13d1 | 755 | LMIC.channelMap[chidx>>4] |= (1<<(chidx&0xF)); |
mluis | 0:62d1edcc13d1 | 756 | return 1; |
mluis | 0:62d1edcc13d1 | 757 | } |
mluis | 0:62d1edcc13d1 | 758 | |
mluis | 1:d3b7bde3995c | 759 | void LMIC_disableChannel (u1_t channel) { |
mluis | 1:d3b7bde3995c | 760 | if( channel < 72+MAX_XCHANNELS ) |
mluis | 1:d3b7bde3995c | 761 | LMIC.channelMap[channel/4] &= ~(1<<(channel&0xF)); |
mluis | 1:d3b7bde3995c | 762 | } |
mluis | 0:62d1edcc13d1 | 763 | |
mluis | 0:62d1edcc13d1 | 764 | static u1_t mapChannels (u1_t chpage, u2_t chmap) { |
mluis | 0:62d1edcc13d1 | 765 | if( chpage == MCMD_LADR_CHP_125ON || chpage == MCMD_LADR_CHP_125OFF ) { |
mluis | 1:d3b7bde3995c | 766 | u2_t en125 = chpage == MCMD_LADR_CHP_125ON ? 0xFFFF : 0x0000; |
mluis | 1:d3b7bde3995c | 767 | for( u1_t u=0; u<4; u++ ) |
mluis | 1:d3b7bde3995c | 768 | LMIC.channelMap[u] = en125; |
mluis | 1:d3b7bde3995c | 769 | LMIC.channelMap[64/16] = chmap; |
mluis | 0:62d1edcc13d1 | 770 | } else { |
mluis | 1:d3b7bde3995c | 771 | if( chpage >= (72+MAX_XCHANNELS+15)/16 ) |
mluis | 1:d3b7bde3995c | 772 | return 0; |
mluis | 1:d3b7bde3995c | 773 | LMIC.channelMap[chpage] = chmap; |
mluis | 0:62d1edcc13d1 | 774 | } |
mluis | 0:62d1edcc13d1 | 775 | return 1; |
mluis | 0:62d1edcc13d1 | 776 | } |
mluis | 0:62d1edcc13d1 | 777 | |
mluis | 0:62d1edcc13d1 | 778 | static void updateTx (ostime_t txbeg) { |
mluis | 0:62d1edcc13d1 | 779 | u1_t chnl = LMIC.txChnl; |
mluis | 0:62d1edcc13d1 | 780 | if( chnl < 64 ) { |
mluis | 1:d3b7bde3995c | 781 | LMIC.freq = US915_125kHz_UPFBASE + chnl*US915_125kHz_UPFSTEP; |
mluis | 1:d3b7bde3995c | 782 | LMIC.txpow = 30; |
mluis | 1:d3b7bde3995c | 783 | return; |
mluis | 0:62d1edcc13d1 | 784 | } |
mluis | 0:62d1edcc13d1 | 785 | LMIC.txpow = 26; |
mluis | 0:62d1edcc13d1 | 786 | if( chnl < 64+8 ) { |
mluis | 1:d3b7bde3995c | 787 | LMIC.freq = US915_500kHz_UPFBASE + (chnl-64)*US915_500kHz_UPFSTEP; |
mluis | 0:62d1edcc13d1 | 788 | } else { |
mluis | 1:d3b7bde3995c | 789 | ASSERT(chnl < 64+8+MAX_XCHANNELS); |
mluis | 1:d3b7bde3995c | 790 | LMIC.freq = LMIC.xchFreq[chnl-72]; |
mluis | 0:62d1edcc13d1 | 791 | } |
mluis | 0:62d1edcc13d1 | 792 | |
mluis | 0:62d1edcc13d1 | 793 | // Update global duty cycle stats |
mluis | 0:62d1edcc13d1 | 794 | if( LMIC.globalDutyRate != 0 ) { |
mluis | 1:d3b7bde3995c | 795 | ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen); |
mluis | 1:d3b7bde3995c | 796 | LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate); |
mluis | 0:62d1edcc13d1 | 797 | } |
mluis | 0:62d1edcc13d1 | 798 | } |
mluis | 0:62d1edcc13d1 | 799 | |
mluis | 0:62d1edcc13d1 | 800 | // US does not have duty cycling - return now as earliest TX time |
mluis | 0:62d1edcc13d1 | 801 | #define nextTx(now) (_nextTx(),(now)) |
mluis | 0:62d1edcc13d1 | 802 | static void _nextTx (void) { |
mluis | 1:d3b7bde3995c | 803 | if( LMIC.chRnd==0 ) |
mluis | 1:d3b7bde3995c | 804 | LMIC.chRnd = os_getRndU1() & 0x3F; |
mluis | 1:d3b7bde3995c | 805 | if( LMIC.datarate >= DR_SF8C ) { // 500kHz |
mluis | 1:d3b7bde3995c | 806 | u1_t map = LMIC.channelMap[64/16]&0xFF; |
mluis | 1:d3b7bde3995c | 807 | for( u1_t i=0; i<8; i++ ) { |
mluis | 1:d3b7bde3995c | 808 | if( (map & (1<<(++LMIC.chRnd & 7))) != 0 ) { |
mluis | 1:d3b7bde3995c | 809 | LMIC.txChnl = 64 + (LMIC.chRnd & 7); |
mluis | 1:d3b7bde3995c | 810 | return; |
mluis | 1:d3b7bde3995c | 811 | } |
mluis | 1:d3b7bde3995c | 812 | } |
mluis | 1:d3b7bde3995c | 813 | } else { // 125kHz |
mluis | 1:d3b7bde3995c | 814 | for( u1_t i=0; i<64; i++ ) { |
mluis | 1:d3b7bde3995c | 815 | u1_t chnl = ++LMIC.chRnd & 0x3F; |
mluis | 1:d3b7bde3995c | 816 | if( (LMIC.channelMap[(chnl >> 4)] & (1<<(chnl & 0xF))) != 0 ) { |
mluis | 1:d3b7bde3995c | 817 | LMIC.txChnl = chnl; |
mluis | 1:d3b7bde3995c | 818 | return; |
mluis | 1:d3b7bde3995c | 819 | } |
mluis | 1:d3b7bde3995c | 820 | } |
mluis | 0:62d1edcc13d1 | 821 | } |
mluis | 1:d3b7bde3995c | 822 | // No feasible channel found! Keep old one. |
mluis | 0:62d1edcc13d1 | 823 | } |
mluis | 0:62d1edcc13d1 | 824 | |
mluis | 0:62d1edcc13d1 | 825 | static void setBcnRxParams (void) { |
mluis | 0:62d1edcc13d1 | 826 | LMIC.dataLen = 0; |
mluis | 1:d3b7bde3995c | 827 | LMIC.freq = US915_500kHz_DNFBASE + LMIC.bcnChnl * US915_500kHz_DNFSTEP; |
mluis | 0:62d1edcc13d1 | 828 | LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN); |
mluis | 0:62d1edcc13d1 | 829 | } |
mluis | 0:62d1edcc13d1 | 830 | |
mluis | 1:d3b7bde3995c | 831 | #define setRx1Params() { \ |
mluis | 0:62d1edcc13d1 | 832 | LMIC.freq = US915_500kHz_DNFBASE + (LMIC.txChnl & 0x7) * US915_500kHz_DNFSTEP; \ |
mluis | 1:d3b7bde3995c | 833 | if( /* TX datarate */LMIC.dndr < DR_SF8C ) \ |
mluis | 1:d3b7bde3995c | 834 | LMIC.dndr += DR_SF10CR - DR_SF10; \ |
mluis | 1:d3b7bde3995c | 835 | else if( LMIC.dndr == DR_SF8C ) \ |
mluis | 1:d3b7bde3995c | 836 | LMIC.dndr = DR_SF7CR; \ |
mluis | 1:d3b7bde3995c | 837 | LMIC.rps = dndr2rps(LMIC.dndr); \ |
mluis | 0:62d1edcc13d1 | 838 | } |
mluis | 0:62d1edcc13d1 | 839 | |
mluis | 0:62d1edcc13d1 | 840 | static void initJoinLoop (void) { |
mluis | 1:d3b7bde3995c | 841 | LMIC.chRnd = 0; |
mluis | 1:d3b7bde3995c | 842 | LMIC.txChnl = 0; |
mluis | 0:62d1edcc13d1 | 843 | LMIC.adrTxPow = 20; |
mluis | 0:62d1edcc13d1 | 844 | ASSERT((LMIC.opmode & OP_NEXTCHNL)==0); |
mluis | 0:62d1edcc13d1 | 845 | LMIC.txend = os_getTime(); |
mluis | 0:62d1edcc13d1 | 846 | setDrJoin(DRCHG_SET, DR_SF7); |
mluis | 0:62d1edcc13d1 | 847 | } |
mluis | 0:62d1edcc13d1 | 848 | |
mluis | 0:62d1edcc13d1 | 849 | static ostime_t nextJoinState (void) { |
mluis | 0:62d1edcc13d1 | 850 | // Try the following: |
mluis | 0:62d1edcc13d1 | 851 | // SF7/8/9/10 on a random channel 0..63 |
mluis | 0:62d1edcc13d1 | 852 | // SF8C on a random channel 64..71 |
mluis | 0:62d1edcc13d1 | 853 | // |
mluis | 1:d3b7bde3995c | 854 | u1_t failed = 0; |
mluis | 0:62d1edcc13d1 | 855 | if( LMIC.datarate != DR_SF8C ) { |
mluis | 1:d3b7bde3995c | 856 | LMIC.txChnl = 64+(LMIC.txChnl&7); |
mluis | 1:d3b7bde3995c | 857 | setDrJoin(DRCHG_SET, DR_SF8C); |
mluis | 0:62d1edcc13d1 | 858 | } else { |
mluis | 1:d3b7bde3995c | 859 | LMIC.txChnl = os_getRndU1() & 0x3F; |
mluis | 1:d3b7bde3995c | 860 | s1_t dr = DR_SF7 - ++LMIC.txCnt; |
mluis | 1:d3b7bde3995c | 861 | if( dr < DR_SF10 ) { |
mluis | 1:d3b7bde3995c | 862 | dr = DR_SF10; |
mluis | 1:d3b7bde3995c | 863 | failed = 1; // All DR exhausted - signal failed |
mluis | 1:d3b7bde3995c | 864 | } |
mluis | 1:d3b7bde3995c | 865 | setDrJoin(DRCHG_SET, dr); |
mluis | 0:62d1edcc13d1 | 866 | } |
mluis | 1:d3b7bde3995c | 867 | LMIC.opmode &= ~OP_NEXTCHNL; |
mluis | 1:d3b7bde3995c | 868 | LMIC.txend = os_getTime() + |
mluis | 1:d3b7bde3995c | 869 | (isTESTMODE() |
mluis | 1:d3b7bde3995c | 870 | // Avoid collision with JOIN ACCEPT being sent by GW (but we missed it - GW is still busy) |
mluis | 1:d3b7bde3995c | 871 | ? DNW2_SAFETY_ZONE |
mluis | 1:d3b7bde3995c | 872 | // Otherwise: randomize join (street lamp case): |
mluis | 1:d3b7bde3995c | 873 | // SF10:16, SF9=8,..SF8C:1secs |
mluis | 1:d3b7bde3995c | 874 | : rndDelay(16>>LMIC.datarate)); |
mluis | 1:d3b7bde3995c | 875 | // 1 - triggers EV_JOIN_FAILED event |
mluis | 1:d3b7bde3995c | 876 | return failed; |
mluis | 0:62d1edcc13d1 | 877 | } |
mluis | 0:62d1edcc13d1 | 878 | |
mluis | 0:62d1edcc13d1 | 879 | // |
mluis | 0:62d1edcc13d1 | 880 | // END: US915 related stuff |
mluis | 0:62d1edcc13d1 | 881 | // |
mluis | 0:62d1edcc13d1 | 882 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 883 | #else |
mluis | 0:62d1edcc13d1 | 884 | #error Unsupported frequency band! |
mluis | 0:62d1edcc13d1 | 885 | #endif |
mluis | 0:62d1edcc13d1 | 886 | |
mluis | 0:62d1edcc13d1 | 887 | |
mluis | 0:62d1edcc13d1 | 888 | static void runEngineUpdate (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 889 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 890 | } |
mluis | 0:62d1edcc13d1 | 891 | |
mluis | 0:62d1edcc13d1 | 892 | |
mluis | 0:62d1edcc13d1 | 893 | static void reportEvent (ev_t ev) { |
mluis | 0:62d1edcc13d1 | 894 | EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV, |
mluis | 1:d3b7bde3995c | 895 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 896 | e_.info = ev)); |
mluis | 0:62d1edcc13d1 | 897 | ON_LMIC_EVENT(ev); |
mluis | 0:62d1edcc13d1 | 898 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 899 | } |
mluis | 0:62d1edcc13d1 | 900 | |
mluis | 0:62d1edcc13d1 | 901 | |
mluis | 1:d3b7bde3995c | 902 | static void runReset (xref2osjob_t osjob) { |
mluis | 1:d3b7bde3995c | 903 | // Disable session |
mluis | 1:d3b7bde3995c | 904 | LMIC_reset(); |
mluis | 1:d3b7bde3995c | 905 | LMIC_startJoining(); |
mluis | 1:d3b7bde3995c | 906 | reportEvent(EV_RESET); |
mluis | 1:d3b7bde3995c | 907 | } |
mluis | 1:d3b7bde3995c | 908 | |
mluis | 0:62d1edcc13d1 | 909 | static void stateJustJoined (void) { |
mluis | 0:62d1edcc13d1 | 910 | LMIC.seqnoDn = LMIC.seqnoUp = 0; |
mluis | 0:62d1edcc13d1 | 911 | LMIC.rejoinCnt = 0; |
mluis | 0:62d1edcc13d1 | 912 | LMIC.dnConf = LMIC.adrChanged = LMIC.ladrAns = LMIC.devsAns = 0; |
mluis | 0:62d1edcc13d1 | 913 | LMIC.moreData = LMIC.dn2Ans = LMIC.snchAns = LMIC.dutyCapAns = 0; |
mluis | 0:62d1edcc13d1 | 914 | LMIC.pingSetAns = 0; |
mluis | 0:62d1edcc13d1 | 915 | LMIC.upRepeat = 0; |
mluis | 0:62d1edcc13d1 | 916 | LMIC.adrAckReq = LINK_CHECK_INIT; |
mluis | 0:62d1edcc13d1 | 917 | LMIC.dn2Dr = DR_DNW2; |
mluis | 0:62d1edcc13d1 | 918 | LMIC.dn2Freq = FREQ_DNW2; |
mluis | 0:62d1edcc13d1 | 919 | LMIC.bcnChnl = CHNL_BCN; |
mluis | 0:62d1edcc13d1 | 920 | LMIC.ping.freq = FREQ_PING; |
mluis | 0:62d1edcc13d1 | 921 | LMIC.ping.dr = DR_PING; |
mluis | 0:62d1edcc13d1 | 922 | } |
mluis | 0:62d1edcc13d1 | 923 | |
mluis | 0:62d1edcc13d1 | 924 | |
mluis | 0:62d1edcc13d1 | 925 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 926 | // Decoding frames |
mluis | 0:62d1edcc13d1 | 927 | |
mluis | 0:62d1edcc13d1 | 928 | |
mluis | 0:62d1edcc13d1 | 929 | // Decode beacon - do not overwrite bcninfo unless we have a match! |
mluis | 0:62d1edcc13d1 | 930 | static int decodeBeacon (void) { |
mluis | 0:62d1edcc13d1 | 931 | ASSERT(LMIC.dataLen == LEN_BCN); // implicit header RX guarantees this |
mluis | 0:62d1edcc13d1 | 932 | xref2u1_t d = LMIC.frame; |
mluis | 1:d3b7bde3995c | 933 | if( |
mluis | 1:d3b7bde3995c | 934 | #if CFG_eu868 |
mluis | 1:d3b7bde3995c | 935 | d[OFF_BCN_CRC1] != (u1_t)os_crc16(d,OFF_BCN_CRC1) |
mluis | 1:d3b7bde3995c | 936 | #elif CFG_us915 |
mluis | 1:d3b7bde3995c | 937 | os_rlsbf2(&d[OFF_BCN_CRC1]) != os_crc16(d,OFF_BCN_CRC1) |
mluis | 1:d3b7bde3995c | 938 | #endif |
mluis | 1:d3b7bde3995c | 939 | ) |
mluis | 1:d3b7bde3995c | 940 | return 0; // first (common) part fails CRC check |
mluis | 0:62d1edcc13d1 | 941 | // First set of fields is ok |
mluis | 0:62d1edcc13d1 | 942 | u4_t bcnnetid = os_rlsbf4(&d[OFF_BCN_NETID]) & 0xFFFFFF; |
mluis | 0:62d1edcc13d1 | 943 | if( bcnnetid != LMIC.netid ) |
mluis | 1:d3b7bde3995c | 944 | return -1; // not the beacon we're looking for |
mluis | 0:62d1edcc13d1 | 945 | |
mluis | 0:62d1edcc13d1 | 946 | LMIC.bcninfo.flags &= ~(BCN_PARTIAL|BCN_FULL); |
mluis | 0:62d1edcc13d1 | 947 | // Match - update bcninfo structure |
mluis | 1:d3b7bde3995c | 948 | LMIC.bcninfo.snr = LMIC.snr; |
mluis | 1:d3b7bde3995c | 949 | LMIC.bcninfo.rssi = LMIC.rssi; |
mluis | 0:62d1edcc13d1 | 950 | LMIC.bcninfo.txtime = LMIC.rxtime - AIRTIME_BCN_osticks; |
mluis | 0:62d1edcc13d1 | 951 | LMIC.bcninfo.time = os_rlsbf4(&d[OFF_BCN_TIME]); |
mluis | 0:62d1edcc13d1 | 952 | LMIC.bcninfo.flags |= BCN_PARTIAL; |
mluis | 0:62d1edcc13d1 | 953 | |
mluis | 0:62d1edcc13d1 | 954 | // Check 2nd set |
mluis | 0:62d1edcc13d1 | 955 | if( os_rlsbf2(&d[OFF_BCN_CRC2]) != os_crc16(d,OFF_BCN_CRC2) ) |
mluis | 1:d3b7bde3995c | 956 | return 1; |
mluis | 0:62d1edcc13d1 | 957 | // Second set of fields is ok |
mluis | 0:62d1edcc13d1 | 958 | LMIC.bcninfo.lat = (s4_t)os_rlsbf4(&d[OFF_BCN_LAT-1]) >> 8; // read as signed 24-bit |
mluis | 0:62d1edcc13d1 | 959 | LMIC.bcninfo.lon = (s4_t)os_rlsbf4(&d[OFF_BCN_LON-1]) >> 8; // ditto |
mluis | 0:62d1edcc13d1 | 960 | LMIC.bcninfo.info = d[OFF_BCN_INFO]; |
mluis | 0:62d1edcc13d1 | 961 | LMIC.bcninfo.flags |= BCN_FULL; |
mluis | 0:62d1edcc13d1 | 962 | return 2; |
mluis | 0:62d1edcc13d1 | 963 | } |
mluis | 0:62d1edcc13d1 | 964 | |
mluis | 0:62d1edcc13d1 | 965 | |
mluis | 0:62d1edcc13d1 | 966 | static bit_t decodeFrame (void) { |
mluis | 0:62d1edcc13d1 | 967 | xref2u1_t d = LMIC.frame; |
mluis | 0:62d1edcc13d1 | 968 | u1_t hdr = d[0]; |
mluis | 0:62d1edcc13d1 | 969 | u1_t ftype = hdr & HDR_FTYPE; |
mluis | 0:62d1edcc13d1 | 970 | int dlen = LMIC.dataLen; |
mluis | 0:62d1edcc13d1 | 971 | if( dlen < OFF_DAT_OPTS+4 || |
mluis | 1:d3b7bde3995c | 972 | (hdr & HDR_MAJOR) != HDR_MAJOR_V1 || |
mluis | 1:d3b7bde3995c | 973 | (ftype != HDR_FTYPE_DADN && ftype != HDR_FTYPE_DCDN) ) { |
mluis | 1:d3b7bde3995c | 974 | // Basic sanity checks failed |
mluis | 1:d3b7bde3995c | 975 | EV(specCond, WARN, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME, |
mluis | 1:d3b7bde3995c | 976 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 977 | e_.info = dlen < 4 ? 0 : os_rlsbf4(&d[dlen-4]), |
mluis | 1:d3b7bde3995c | 978 | e_.info2 = hdr + (dlen<<8))); |
mluis | 0:62d1edcc13d1 | 979 | norx: |
mluis | 1:d3b7bde3995c | 980 | LMIC.dataLen = 0; |
mluis | 1:d3b7bde3995c | 981 | return 0; |
mluis | 0:62d1edcc13d1 | 982 | } |
mluis | 0:62d1edcc13d1 | 983 | // Validate exact frame length |
mluis | 0:62d1edcc13d1 | 984 | // Note: device address was already read+evaluated in order to arrive here. |
mluis | 0:62d1edcc13d1 | 985 | int fct = d[OFF_DAT_FCT]; |
mluis | 0:62d1edcc13d1 | 986 | u4_t addr = os_rlsbf4(&d[OFF_DAT_ADDR]); |
mluis | 0:62d1edcc13d1 | 987 | u4_t seqno = os_rlsbf2(&d[OFF_DAT_SEQNO]); |
mluis | 0:62d1edcc13d1 | 988 | int olen = fct & FCT_OPTLEN; |
mluis | 0:62d1edcc13d1 | 989 | int ackup = (fct & FCT_ACK) != 0 ? 1 : 0; // ACK last up frame |
mluis | 0:62d1edcc13d1 | 990 | int poff = OFF_DAT_OPTS+olen; |
mluis | 0:62d1edcc13d1 | 991 | int pend = dlen-4; // MIC |
mluis | 0:62d1edcc13d1 | 992 | |
mluis | 0:62d1edcc13d1 | 993 | if( addr != LMIC.devaddr ) { |
mluis | 1:d3b7bde3995c | 994 | EV(specCond, WARN, (e_.reason = EV::specCond_t::ALIEN_ADDRESS, |
mluis | 1:d3b7bde3995c | 995 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 996 | e_.info = addr, |
mluis | 1:d3b7bde3995c | 997 | e_.info2 = LMIC.devaddr)); |
mluis | 1:d3b7bde3995c | 998 | goto norx; |
mluis | 0:62d1edcc13d1 | 999 | } |
mluis | 0:62d1edcc13d1 | 1000 | if( poff > pend ) { |
mluis | 1:d3b7bde3995c | 1001 | EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME, |
mluis | 1:d3b7bde3995c | 1002 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1003 | e_.info = 0x1000000 + (poff-pend) + (fct<<8) + (dlen<<16))); |
mluis | 1:d3b7bde3995c | 1004 | goto norx; |
mluis | 0:62d1edcc13d1 | 1005 | } |
mluis | 0:62d1edcc13d1 | 1006 | |
mluis | 0:62d1edcc13d1 | 1007 | int port = -1; |
mluis | 0:62d1edcc13d1 | 1008 | int replayConf = 0; |
mluis | 0:62d1edcc13d1 | 1009 | |
mluis | 0:62d1edcc13d1 | 1010 | if( pend > poff ) |
mluis | 1:d3b7bde3995c | 1011 | port = d[poff++]; |
mluis | 0:62d1edcc13d1 | 1012 | |
mluis | 0:62d1edcc13d1 | 1013 | seqno = LMIC.seqnoDn + (u2_t)(seqno - LMIC.seqnoDn); |
mluis | 0:62d1edcc13d1 | 1014 | |
mluis | 0:62d1edcc13d1 | 1015 | if( !aes_verifyMic(LMIC.nwkKey, LMIC.devaddr, seqno, /*dn*/1, d, pend) ) { |
mluis | 1:d3b7bde3995c | 1016 | EV(spe3Cond, ERR, (e_.reason = EV::spe3Cond_t::CORRUPTED_MIC, |
mluis | 1:d3b7bde3995c | 1017 | e_.eui1 = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1018 | e_.info1 = Base::lsbf4(&d[pend]), |
mluis | 1:d3b7bde3995c | 1019 | e_.info2 = seqno, |
mluis | 1:d3b7bde3995c | 1020 | e_.info3 = LMIC.devaddr)); |
mluis | 0:62d1edcc13d1 | 1021 | goto norx; |
mluis | 0:62d1edcc13d1 | 1022 | } |
mluis | 1:d3b7bde3995c | 1023 | if( seqno < LMIC.seqnoDn ) { |
mluis | 1:d3b7bde3995c | 1024 | if( (s4_t)seqno > (s4_t)LMIC.seqnoDn ) { |
mluis | 1:d3b7bde3995c | 1025 | EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER, |
mluis | 1:d3b7bde3995c | 1026 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1027 | e_.info = LMIC.seqnoDn, |
mluis | 1:d3b7bde3995c | 1028 | e_.info2 = seqno)); |
mluis | 1:d3b7bde3995c | 1029 | goto norx; |
mluis | 1:d3b7bde3995c | 1030 | } |
mluis | 1:d3b7bde3995c | 1031 | if( seqno != LMIC.seqnoDn-1 || !LMIC.dnConf || ftype != HDR_FTYPE_DCDN ) { |
mluis | 1:d3b7bde3995c | 1032 | EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_OBSOLETE, |
mluis | 1:d3b7bde3995c | 1033 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1034 | e_.info = LMIC.seqnoDn, |
mluis | 1:d3b7bde3995c | 1035 | e_.info2 = seqno)); |
mluis | 1:d3b7bde3995c | 1036 | goto norx; |
mluis | 1:d3b7bde3995c | 1037 | } |
mluis | 1:d3b7bde3995c | 1038 | // Replay of previous sequence number allowed only if |
mluis | 1:d3b7bde3995c | 1039 | // previous frame and repeated both requested confirmation |
mluis | 1:d3b7bde3995c | 1040 | replayConf = 1; |
mluis | 0:62d1edcc13d1 | 1041 | } |
mluis | 0:62d1edcc13d1 | 1042 | else { |
mluis | 1:d3b7bde3995c | 1043 | if( seqno > LMIC.seqnoDn ) { |
mluis | 1:d3b7bde3995c | 1044 | EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_SKIP, |
mluis | 1:d3b7bde3995c | 1045 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1046 | e_.info = LMIC.seqnoDn, |
mluis | 1:d3b7bde3995c | 1047 | e_.info2 = seqno)); |
mluis | 1:d3b7bde3995c | 1048 | } |
mluis | 1:d3b7bde3995c | 1049 | LMIC.seqnoDn = seqno+1; // next number to be expected |
mluis | 1:d3b7bde3995c | 1050 | DO_DEVDB(LMIC.seqnoDn,seqnoDn); |
mluis | 1:d3b7bde3995c | 1051 | // DN frame requested confirmation - provide ACK once with next UP frame |
mluis | 1:d3b7bde3995c | 1052 | LMIC.dnConf = (ftype == HDR_FTYPE_DCDN ? FCT_ACK : 0); |
mluis | 0:62d1edcc13d1 | 1053 | } |
mluis | 0:62d1edcc13d1 | 1054 | |
mluis | 0:62d1edcc13d1 | 1055 | if( LMIC.dnConf || (fct & FCT_MORE) ) |
mluis | 1:d3b7bde3995c | 1056 | LMIC.opmode |= OP_POLL; |
mluis | 0:62d1edcc13d1 | 1057 | |
mluis | 0:62d1edcc13d1 | 1058 | // We heard from network |
mluis | 1:d3b7bde3995c | 1059 | LMIC.adrChanged = LMIC.rejoinCnt = 0; |
mluis | 1:d3b7bde3995c | 1060 | if( LMIC.adrAckReq != LINK_CHECK_OFF ) |
mluis | 1:d3b7bde3995c | 1061 | LMIC.adrAckReq = LINK_CHECK_INIT; |
mluis | 0:62d1edcc13d1 | 1062 | |
mluis | 0:62d1edcc13d1 | 1063 | // Process OPTS |
mluis | 1:d3b7bde3995c | 1064 | int m = LMIC.rssi - RSSI_OFF - getSensitivity(LMIC.rps); |
mluis | 0:62d1edcc13d1 | 1065 | LMIC.margin = m < 0 ? 0 : m > 254 ? 254 : m; |
mluis | 0:62d1edcc13d1 | 1066 | |
mluis | 0:62d1edcc13d1 | 1067 | xref2u1_t opts = &d[OFF_DAT_OPTS]; |
mluis | 0:62d1edcc13d1 | 1068 | int oidx = 0; |
mluis | 0:62d1edcc13d1 | 1069 | while( oidx < olen ) { |
mluis | 1:d3b7bde3995c | 1070 | switch( opts[oidx] ) { |
mluis | 1:d3b7bde3995c | 1071 | case MCMD_LCHK_ANS: { |
mluis | 1:d3b7bde3995c | 1072 | //int gwmargin = opts[oidx+1]; |
mluis | 1:d3b7bde3995c | 1073 | //int ngws = opts[oidx+2]; |
mluis | 1:d3b7bde3995c | 1074 | oidx += 3; |
mluis | 1:d3b7bde3995c | 1075 | continue; |
mluis | 1:d3b7bde3995c | 1076 | } |
mluis | 1:d3b7bde3995c | 1077 | case MCMD_LADR_REQ: { |
mluis | 1:d3b7bde3995c | 1078 | u1_t p1 = opts[oidx+1]; // txpow + DR |
mluis | 1:d3b7bde3995c | 1079 | u2_t chmap = os_rlsbf2(&opts[oidx+2]);// list of enabled channels |
mluis | 1:d3b7bde3995c | 1080 | u1_t chpage = opts[oidx+4] & MCMD_LADR_CHPAGE_MASK; // channel page |
mluis | 1:d3b7bde3995c | 1081 | u1_t uprpt = opts[oidx+4] & MCMD_LADR_REPEAT_MASK; // up repeat count |
mluis | 1:d3b7bde3995c | 1082 | oidx += 5; |
mluis | 0:62d1edcc13d1 | 1083 | |
mluis | 1:d3b7bde3995c | 1084 | LMIC.ladrAns = 0x80 | // Include an answer into next frame up |
mluis | 1:d3b7bde3995c | 1085 | MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK; |
mluis | 1:d3b7bde3995c | 1086 | if( !mapChannels(chpage, chmap) ) |
mluis | 1:d3b7bde3995c | 1087 | LMIC.ladrAns &= ~MCMD_LADR_ANS_CHACK; |
mluis | 1:d3b7bde3995c | 1088 | dr_t dr = (dr_t)(p1>>MCMD_LADR_DR_SHIFT); |
mluis | 1:d3b7bde3995c | 1089 | if( !validDR(dr) ) { |
mluis | 1:d3b7bde3995c | 1090 | LMIC.ladrAns &= ~MCMD_LADR_ANS_DRACK; |
mluis | 1:d3b7bde3995c | 1091 | EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD, |
mluis | 1:d3b7bde3995c | 1092 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1093 | e_.info = Base::lsbf4(&d[pend]), |
mluis | 1:d3b7bde3995c | 1094 | e_.info2 = Base::msbf4(&opts[oidx-4]))); |
mluis | 1:d3b7bde3995c | 1095 | } |
mluis | 1:d3b7bde3995c | 1096 | if( (LMIC.ladrAns & 0x7F) == (MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK) ) { |
mluis | 1:d3b7bde3995c | 1097 | // Nothing went wrong - use settings |
mluis | 1:d3b7bde3995c | 1098 | LMIC.upRepeat = uprpt; |
mluis | 1:d3b7bde3995c | 1099 | setDrTxpow(DRCHG_NWKCMD, dr, pow2dBm(p1)); |
mluis | 1:d3b7bde3995c | 1100 | } |
mluis | 1:d3b7bde3995c | 1101 | LMIC.adrChanged = 1; // Trigger an ACK to NWK |
mluis | 1:d3b7bde3995c | 1102 | continue; |
mluis | 0:62d1edcc13d1 | 1103 | } |
mluis | 1:d3b7bde3995c | 1104 | case MCMD_DEVS_REQ: { |
mluis | 1:d3b7bde3995c | 1105 | LMIC.devsAns = 1; |
mluis | 1:d3b7bde3995c | 1106 | oidx += 1; |
mluis | 1:d3b7bde3995c | 1107 | continue; |
mluis | 1:d3b7bde3995c | 1108 | } |
mluis | 1:d3b7bde3995c | 1109 | case MCMD_DN2P_SET: { |
mluis | 1:d3b7bde3995c | 1110 | dr_t dr = (dr_t)(opts[oidx+1] & 0x0F); |
mluis | 1:d3b7bde3995c | 1111 | u4_t freq = convFreq(&opts[oidx+2]); |
mluis | 1:d3b7bde3995c | 1112 | oidx += 5; |
mluis | 1:d3b7bde3995c | 1113 | LMIC.dn2Ans = 0x80; // answer pending |
mluis | 1:d3b7bde3995c | 1114 | if( validDR(dr) ) |
mluis | 1:d3b7bde3995c | 1115 | LMIC.dn2Ans |= MCMD_DN2P_ANS_DRACK; |
mluis | 1:d3b7bde3995c | 1116 | if( freq != 0 ) |
mluis | 1:d3b7bde3995c | 1117 | LMIC.dn2Ans |= MCMD_DN2P_ANS_CHACK; |
mluis | 1:d3b7bde3995c | 1118 | if( LMIC.dn2Ans == (0x80|MCMD_DN2P_ANS_DRACK|MCMD_DN2P_ANS_CHACK) ) { |
mluis | 1:d3b7bde3995c | 1119 | LMIC.dn2Dr = dr; |
mluis | 1:d3b7bde3995c | 1120 | LMIC.dn2Freq = freq; |
mluis | 1:d3b7bde3995c | 1121 | DO_DEVDB(LMIC.dn2Dr,dn2Dr); |
mluis | 1:d3b7bde3995c | 1122 | DO_DEVDB(LMIC.dn2Freq,dn2Freq); |
mluis | 1:d3b7bde3995c | 1123 | } |
mluis | 1:d3b7bde3995c | 1124 | continue; |
mluis | 0:62d1edcc13d1 | 1125 | } |
mluis | 1:d3b7bde3995c | 1126 | case MCMD_DCAP_REQ: { |
mluis | 1:d3b7bde3995c | 1127 | u1_t cap = opts[oidx+1]; |
mluis | 1:d3b7bde3995c | 1128 | oidx += 2; |
mluis | 1:d3b7bde3995c | 1129 | // A value cap=0xFF means device is OFF unless enabled again manually. |
mluis | 1:d3b7bde3995c | 1130 | if( cap==0xFF ) |
mluis | 1:d3b7bde3995c | 1131 | LMIC.opmode |= OP_SHUTDOWN; // stop any sending |
mluis | 1:d3b7bde3995c | 1132 | LMIC.globalDutyRate = cap & 0xF; |
mluis | 1:d3b7bde3995c | 1133 | LMIC.globalDutyAvail = os_getTime(); |
mluis | 1:d3b7bde3995c | 1134 | DO_DEVDB(cap,dutyCap); |
mluis | 1:d3b7bde3995c | 1135 | LMIC.dutyCapAns = 1; |
mluis | 1:d3b7bde3995c | 1136 | continue; |
mluis | 1:d3b7bde3995c | 1137 | } |
mluis | 1:d3b7bde3995c | 1138 | case MCMD_SNCH_REQ: { |
mluis | 1:d3b7bde3995c | 1139 | u1_t chidx = opts[oidx+1]; // channel |
mluis | 1:d3b7bde3995c | 1140 | u4_t freq = convFreq(&opts[oidx+2]); // freq |
mluis | 1:d3b7bde3995c | 1141 | u1_t drs = opts[oidx+5]; // datarate span |
mluis | 1:d3b7bde3995c | 1142 | LMIC.snchAns = 0x80; |
mluis | 1:d3b7bde3995c | 1143 | if( freq != 0 && LMIC_setupChannel(chidx, freq, DR_RANGE_MAP(drs&0xF,drs>>4), -1) ) |
mluis | 1:d3b7bde3995c | 1144 | LMIC.snchAns |= MCMD_SNCH_ANS_DRACK|MCMD_SNCH_ANS_FQACK; |
mluis | 1:d3b7bde3995c | 1145 | oidx += 6; |
mluis | 1:d3b7bde3995c | 1146 | continue; |
mluis | 0:62d1edcc13d1 | 1147 | } |
mluis | 1:d3b7bde3995c | 1148 | case MCMD_PING_SET: { |
mluis | 1:d3b7bde3995c | 1149 | u4_t freq = convFreq(&opts[oidx+1]); |
mluis | 1:d3b7bde3995c | 1150 | oidx += 4; |
mluis | 1:d3b7bde3995c | 1151 | u1_t flags = 0x80; |
mluis | 1:d3b7bde3995c | 1152 | if( freq != 0 ) { |
mluis | 1:d3b7bde3995c | 1153 | flags |= MCMD_PING_ANS_FQACK; |
mluis | 1:d3b7bde3995c | 1154 | LMIC.ping.freq = freq; |
mluis | 1:d3b7bde3995c | 1155 | DO_DEVDB(LMIC.ping.intvExp, pingIntvExp); |
mluis | 1:d3b7bde3995c | 1156 | DO_DEVDB(LMIC.ping.freq, pingFreq); |
mluis | 1:d3b7bde3995c | 1157 | DO_DEVDB(LMIC.ping.dr, pingDr); |
mluis | 1:d3b7bde3995c | 1158 | } |
mluis | 1:d3b7bde3995c | 1159 | LMIC.pingSetAns = flags; |
mluis | 1:d3b7bde3995c | 1160 | continue; |
mluis | 1:d3b7bde3995c | 1161 | } |
mluis | 1:d3b7bde3995c | 1162 | case MCMD_BCNI_ANS: { |
mluis | 1:d3b7bde3995c | 1163 | // Ignore if tracking already enabled |
mluis | 1:d3b7bde3995c | 1164 | if( (LMIC.opmode & OP_TRACK) == 0 ) { |
mluis | 1:d3b7bde3995c | 1165 | LMIC.bcnChnl = opts[oidx+3]; |
mluis | 1:d3b7bde3995c | 1166 | // Enable tracking - bcninfoTries |
mluis | 1:d3b7bde3995c | 1167 | LMIC.opmode |= OP_TRACK; |
mluis | 1:d3b7bde3995c | 1168 | // Cleared later in txComplete handling - triggers EV_BEACON_FOUND |
mluis | 1:d3b7bde3995c | 1169 | ASSERT(LMIC.bcninfoTries!=0); |
mluis | 1:d3b7bde3995c | 1170 | // Setup RX parameters |
mluis | 1:d3b7bde3995c | 1171 | LMIC.bcninfo.txtime = (LMIC.rxtime |
mluis | 1:d3b7bde3995c | 1172 | + ms2osticks(os_rlsbf2(&opts[oidx+1]) * MCMD_BCNI_TUNIT) |
mluis | 1:d3b7bde3995c | 1173 | + ms2osticksCeil(MCMD_BCNI_TUNIT/2) |
mluis | 1:d3b7bde3995c | 1174 | - BCN_INTV_osticks); |
mluis | 1:d3b7bde3995c | 1175 | LMIC.bcninfo.flags = 0; // txtime above cannot be used as reference (BCN_PARTIAL|BCN_FULL cleared) |
mluis | 1:d3b7bde3995c | 1176 | calcBcnRxWindowFromMillis(MCMD_BCNI_TUNIT,1); // error of +/-N ms |
mluis | 0:62d1edcc13d1 | 1177 | |
mluis | 1:d3b7bde3995c | 1178 | EV(lostFrame, INFO, (e_.reason = EV::lostFrame_t::MCMD_BCNI_ANS, |
mluis | 1:d3b7bde3995c | 1179 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1180 | e_.lostmic = Base::lsbf4(&d[pend]), |
mluis | 1:d3b7bde3995c | 1181 | e_.info = (LMIC.missedBcns | |
mluis | 1:d3b7bde3995c | 1182 | (osticks2us(LMIC.bcninfo.txtime + BCN_INTV_osticks |
mluis | 1:d3b7bde3995c | 1183 | - LMIC.bcnRxtime) << 8)), |
mluis | 1:d3b7bde3995c | 1184 | e_.time = MAIN::CDEV->ostime2ustime(LMIC.bcninfo.txtime + BCN_INTV_osticks))); |
mluis | 1:d3b7bde3995c | 1185 | } |
mluis | 1:d3b7bde3995c | 1186 | oidx += 4; |
mluis | 1:d3b7bde3995c | 1187 | continue; |
mluis | 0:62d1edcc13d1 | 1188 | } |
mluis | 1:d3b7bde3995c | 1189 | } |
mluis | 1:d3b7bde3995c | 1190 | EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD, |
mluis | 1:d3b7bde3995c | 1191 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1192 | e_.info = Base::lsbf4(&d[pend]), |
mluis | 1:d3b7bde3995c | 1193 | e_.info2 = Base::msbf4(&opts[oidx]))); |
mluis | 1:d3b7bde3995c | 1194 | break; |
mluis | 0:62d1edcc13d1 | 1195 | } |
mluis | 0:62d1edcc13d1 | 1196 | if( oidx != olen ) { |
mluis | 1:d3b7bde3995c | 1197 | EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME, |
mluis | 1:d3b7bde3995c | 1198 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1199 | e_.info = 0x1000000 + (oidx) + (olen<<8))); |
mluis | 0:62d1edcc13d1 | 1200 | } |
mluis | 0:62d1edcc13d1 | 1201 | |
mluis | 0:62d1edcc13d1 | 1202 | if( !replayConf ) { |
mluis | 1:d3b7bde3995c | 1203 | // Handle payload only if not a replay |
mluis | 1:d3b7bde3995c | 1204 | // Decrypt payload - if any |
mluis | 1:d3b7bde3995c | 1205 | if( port >= 0 && pend-poff > 0 ) |
mluis | 1:d3b7bde3995c | 1206 | aes_cipher(port <= 0 ? LMIC.nwkKey : LMIC.artKey, LMIC.devaddr, seqno, /*dn*/1, d+poff, pend-poff); |
mluis | 0:62d1edcc13d1 | 1207 | |
mluis | 1:d3b7bde3995c | 1208 | EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1209 | e_.devaddr = LMIC.devaddr, |
mluis | 1:d3b7bde3995c | 1210 | e_.seqno = seqno, |
mluis | 1:d3b7bde3995c | 1211 | e_.flags = (port < 0 ? EV::dfinfo_t::NOPORT : 0) | EV::dfinfo_t::DN, |
mluis | 1:d3b7bde3995c | 1212 | e_.mic = Base::lsbf4(&d[pend]), |
mluis | 1:d3b7bde3995c | 1213 | e_.hdr = d[LORA::OFF_DAT_HDR], |
mluis | 1:d3b7bde3995c | 1214 | e_.fct = d[LORA::OFF_DAT_FCT], |
mluis | 1:d3b7bde3995c | 1215 | e_.port = port, |
mluis | 1:d3b7bde3995c | 1216 | e_.plen = dlen, |
mluis | 1:d3b7bde3995c | 1217 | e_.opts.length = olen, |
mluis | 1:d3b7bde3995c | 1218 | memcpy(&e_.opts[0], opts, olen))); |
mluis | 0:62d1edcc13d1 | 1219 | } else { |
mluis | 1:d3b7bde3995c | 1220 | EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_REPLAY, |
mluis | 1:d3b7bde3995c | 1221 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1222 | e_.info = Base::lsbf4(&d[pend]), |
mluis | 1:d3b7bde3995c | 1223 | e_.info2 = seqno)); |
mluis | 0:62d1edcc13d1 | 1224 | } |
mluis | 0:62d1edcc13d1 | 1225 | |
mluis | 0:62d1edcc13d1 | 1226 | if( // NWK acks but we don't have a frame pending |
mluis | 1:d3b7bde3995c | 1227 | (ackup && LMIC.txCnt == 0) || |
mluis | 1:d3b7bde3995c | 1228 | // We sent up confirmed and we got a response in DNW1/DNW2 |
mluis | 1:d3b7bde3995c | 1229 | // BUT it did not carry an ACK - this should never happen |
mluis | 1:d3b7bde3995c | 1230 | // Do not resend and assume frame was not ACKed. |
mluis | 1:d3b7bde3995c | 1231 | (!ackup && LMIC.txCnt != 0) ) { |
mluis | 1:d3b7bde3995c | 1232 | EV(specCond, ERR, (e_.reason = EV::specCond_t::SPURIOUS_ACK, |
mluis | 1:d3b7bde3995c | 1233 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1234 | e_.info = seqno, |
mluis | 1:d3b7bde3995c | 1235 | e_.info2 = ackup)); |
mluis | 0:62d1edcc13d1 | 1236 | } |
mluis | 0:62d1edcc13d1 | 1237 | |
mluis | 0:62d1edcc13d1 | 1238 | if( LMIC.txCnt != 0 ) // we requested an ACK |
mluis | 1:d3b7bde3995c | 1239 | LMIC.txrxFlags |= ackup ? TXRX_ACK : TXRX_NACK; |
mluis | 0:62d1edcc13d1 | 1240 | |
mluis | 0:62d1edcc13d1 | 1241 | if( port < 0 ) { |
mluis | 1:d3b7bde3995c | 1242 | LMIC.txrxFlags |= TXRX_NOPORT; |
mluis | 1:d3b7bde3995c | 1243 | LMIC.dataBeg = poff; |
mluis | 1:d3b7bde3995c | 1244 | LMIC.dataLen = 0; |
mluis | 0:62d1edcc13d1 | 1245 | } else { |
mluis | 1:d3b7bde3995c | 1246 | LMIC.txrxFlags |= TXRX_PORT; |
mluis | 1:d3b7bde3995c | 1247 | LMIC.dataBeg = poff; |
mluis | 1:d3b7bde3995c | 1248 | LMIC.dataLen = pend-poff; |
mluis | 0:62d1edcc13d1 | 1249 | } |
mluis | 0:62d1edcc13d1 | 1250 | return 1; |
mluis | 0:62d1edcc13d1 | 1251 | } |
mluis | 0:62d1edcc13d1 | 1252 | |
mluis | 0:62d1edcc13d1 | 1253 | |
mluis | 0:62d1edcc13d1 | 1254 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 1255 | // TX/RX transaction support |
mluis | 0:62d1edcc13d1 | 1256 | |
mluis | 0:62d1edcc13d1 | 1257 | |
mluis | 0:62d1edcc13d1 | 1258 | static void setupRx2 (void) { |
mluis | 0:62d1edcc13d1 | 1259 | LMIC.txrxFlags = TXRX_DNW2; |
mluis | 0:62d1edcc13d1 | 1260 | LMIC.rps = dndr2rps(LMIC.dn2Dr); |
mluis | 0:62d1edcc13d1 | 1261 | LMIC.freq = LMIC.dn2Freq; |
mluis | 0:62d1edcc13d1 | 1262 | LMIC.dataLen = 0; |
mluis | 0:62d1edcc13d1 | 1263 | os_radio(RADIO_RX); |
mluis | 0:62d1edcc13d1 | 1264 | } |
mluis | 0:62d1edcc13d1 | 1265 | |
mluis | 0:62d1edcc13d1 | 1266 | |
mluis | 0:62d1edcc13d1 | 1267 | static void schedRx2 (ostime_t delay, osjobcb_t func) { |
mluis | 0:62d1edcc13d1 | 1268 | // Add 1.5 symbols we need 5 out of 8. Try to sync 1.5 symbols into the preamble. |
mluis | 0:62d1edcc13d1 | 1269 | LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dn2Dr); |
mluis | 0:62d1edcc13d1 | 1270 | os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func); |
mluis | 0:62d1edcc13d1 | 1271 | } |
mluis | 0:62d1edcc13d1 | 1272 | |
mluis | 0:62d1edcc13d1 | 1273 | static void setupRx1 (osjobcb_t func) { |
mluis | 0:62d1edcc13d1 | 1274 | LMIC.txrxFlags = TXRX_DNW1; |
mluis | 0:62d1edcc13d1 | 1275 | // Turn LMIC.rps from TX over to RX |
mluis | 0:62d1edcc13d1 | 1276 | LMIC.rps = setNocrc(LMIC.rps,1); |
mluis | 0:62d1edcc13d1 | 1277 | LMIC.dataLen = 0; |
mluis | 0:62d1edcc13d1 | 1278 | LMIC.osjob.func = func; |
mluis | 0:62d1edcc13d1 | 1279 | os_radio(RADIO_RX); |
mluis | 0:62d1edcc13d1 | 1280 | } |
mluis | 0:62d1edcc13d1 | 1281 | |
mluis | 0:62d1edcc13d1 | 1282 | |
mluis | 0:62d1edcc13d1 | 1283 | // Called by HAL once TX complete and delivers exact end of TX time stamp in LMIC.rxtime |
mluis | 0:62d1edcc13d1 | 1284 | static void txDone (ostime_t delay, osjobcb_t func) { |
mluis | 0:62d1edcc13d1 | 1285 | if( (LMIC.opmode & (OP_TRACK|OP_PINGABLE|OP_PINGINI)) == (OP_TRACK|OP_PINGABLE) ) { |
mluis | 1:d3b7bde3995c | 1286 | rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer! |
mluis | 1:d3b7bde3995c | 1287 | LMIC.opmode |= OP_PINGINI; |
mluis | 0:62d1edcc13d1 | 1288 | } |
mluis | 0:62d1edcc13d1 | 1289 | // Change RX frequency / rps (US only) before we increment txChnl |
mluis | 0:62d1edcc13d1 | 1290 | setRx1Params(); |
mluis | 0:62d1edcc13d1 | 1291 | // LMIC.rxsyms carries the TX datarate (can be != LMIC.datarate [confirm retries etc.]) |
mluis | 0:62d1edcc13d1 | 1292 | // Setup receive - LMIC.rxtime is preloaded with 1.5 symbols offset to tune |
mluis | 0:62d1edcc13d1 | 1293 | // into the middle of the 8 symbols preamble. |
mluis | 1:d3b7bde3995c | 1294 | #if defined(CFG_eu868) |
mluis | 0:62d1edcc13d1 | 1295 | if( /* TX datarate */LMIC.rxsyms == DR_FSK ) { |
mluis | 1:d3b7bde3995c | 1296 | LMIC.rxtime = LMIC.txend + delay - PRERX_FSK*us2osticksRound(160); |
mluis | 1:d3b7bde3995c | 1297 | LMIC.rxsyms = RXLEN_FSK; |
mluis | 0:62d1edcc13d1 | 1298 | } |
mluis | 0:62d1edcc13d1 | 1299 | else |
mluis | 0:62d1edcc13d1 | 1300 | #endif |
mluis | 0:62d1edcc13d1 | 1301 | { |
mluis | 1:d3b7bde3995c | 1302 | LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dndr); |
mluis | 1:d3b7bde3995c | 1303 | LMIC.rxsyms = MINRX_SYMS; |
mluis | 0:62d1edcc13d1 | 1304 | } |
mluis | 0:62d1edcc13d1 | 1305 | os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func); |
mluis | 0:62d1edcc13d1 | 1306 | } |
mluis | 0:62d1edcc13d1 | 1307 | |
mluis | 0:62d1edcc13d1 | 1308 | |
mluis | 0:62d1edcc13d1 | 1309 | // ======================================== Join frames |
mluis | 0:62d1edcc13d1 | 1310 | |
mluis | 0:62d1edcc13d1 | 1311 | |
mluis | 0:62d1edcc13d1 | 1312 | static void onJoinFailed (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1313 | // Notify app - must call LMIC_reset() to stop joining |
mluis | 0:62d1edcc13d1 | 1314 | // otherwise join procedure continues. |
mluis | 0:62d1edcc13d1 | 1315 | reportEvent(EV_JOIN_FAILED); |
mluis | 0:62d1edcc13d1 | 1316 | } |
mluis | 0:62d1edcc13d1 | 1317 | |
mluis | 0:62d1edcc13d1 | 1318 | |
mluis | 0:62d1edcc13d1 | 1319 | static bit_t processJoinAccept (void) { |
mluis | 0:62d1edcc13d1 | 1320 | ASSERT(LMIC.txrxFlags != TXRX_DNW1 || LMIC.dataLen != 0); |
mluis | 0:62d1edcc13d1 | 1321 | ASSERT((LMIC.opmode & OP_TXRXPEND)!=0); |
mluis | 0:62d1edcc13d1 | 1322 | |
mluis | 0:62d1edcc13d1 | 1323 | if( LMIC.dataLen == 0 ) { |
mluis | 0:62d1edcc13d1 | 1324 | nojoinframe: |
mluis | 1:d3b7bde3995c | 1325 | if( (LMIC.opmode & OP_JOINING) == 0 ) { |
mluis | 1:d3b7bde3995c | 1326 | ASSERT((LMIC.opmode & OP_REJOIN) != 0); |
mluis | 1:d3b7bde3995c | 1327 | // REJOIN attempt for roaming |
mluis | 1:d3b7bde3995c | 1328 | LMIC.opmode &= ~(OP_REJOIN|OP_TXRXPEND); |
mluis | 1:d3b7bde3995c | 1329 | if( LMIC.rejoinCnt < 10 ) |
mluis | 1:d3b7bde3995c | 1330 | LMIC.rejoinCnt++; |
mluis | 1:d3b7bde3995c | 1331 | reportEvent(EV_REJOIN_FAILED); |
mluis | 1:d3b7bde3995c | 1332 | return 1; |
mluis | 1:d3b7bde3995c | 1333 | } |
mluis | 1:d3b7bde3995c | 1334 | LMIC.opmode &= ~OP_TXRXPEND; |
mluis | 1:d3b7bde3995c | 1335 | ostime_t delay = nextJoinState(); |
mluis | 1:d3b7bde3995c | 1336 | EV(devCond, DEBUG, (e_.reason = EV::devCond_t::NO_JACC, |
mluis | 1:d3b7bde3995c | 1337 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1338 | e_.info = LMIC.datarate|DR_PAGE, |
mluis | 1:d3b7bde3995c | 1339 | e_.info2 = osticks2ms(delay))); |
mluis | 1:d3b7bde3995c | 1340 | // Build next JOIN REQUEST with next engineUpdate call |
mluis | 1:d3b7bde3995c | 1341 | // Optionally, report join failed. |
mluis | 1:d3b7bde3995c | 1342 | // Both after a random/chosen amount of ticks. |
mluis | 1:d3b7bde3995c | 1343 | os_setTimedCallback(&LMIC.osjob, os_getTime()+delay, |
mluis | 1:d3b7bde3995c | 1344 | (delay&1) != 0 |
mluis | 1:d3b7bde3995c | 1345 | ? FUNC_ADDR(onJoinFailed) // one JOIN iteration done and failed |
mluis | 1:d3b7bde3995c | 1346 | : FUNC_ADDR(runEngineUpdate)); // next step to be delayed |
mluis | 0:62d1edcc13d1 | 1347 | return 1; |
mluis | 0:62d1edcc13d1 | 1348 | } |
mluis | 0:62d1edcc13d1 | 1349 | u1_t hdr = LMIC.frame[0]; |
mluis | 0:62d1edcc13d1 | 1350 | u1_t dlen = LMIC.dataLen; |
mluis | 0:62d1edcc13d1 | 1351 | u4_t mic = os_rlsbf4(&LMIC.frame[dlen-4]); // safe before modified by encrypt! |
mluis | 0:62d1edcc13d1 | 1352 | if( (dlen != LEN_JA && dlen != LEN_JAEXT) |
mluis | 1:d3b7bde3995c | 1353 | || (hdr & (HDR_FTYPE|HDR_MAJOR)) != (HDR_FTYPE_JACC|HDR_MAJOR_V1) ) { |
mluis | 1:d3b7bde3995c | 1354 | EV(specCond, ERR, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME, |
mluis | 1:d3b7bde3995c | 1355 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1356 | e_.info = dlen < 4 ? 0 : mic, |
mluis | 1:d3b7bde3995c | 1357 | e_.info2 = hdr + (dlen<<8))); |
mluis | 0:62d1edcc13d1 | 1358 | badframe: |
mluis | 1:d3b7bde3995c | 1359 | if( (LMIC.txrxFlags & TXRX_DNW1) != 0 ) |
mluis | 1:d3b7bde3995c | 1360 | return 0; |
mluis | 1:d3b7bde3995c | 1361 | goto nojoinframe; |
mluis | 0:62d1edcc13d1 | 1362 | } |
mluis | 0:62d1edcc13d1 | 1363 | aes_encrypt(LMIC.frame+1, dlen-1); |
mluis | 0:62d1edcc13d1 | 1364 | if( !aes_verifyMic0(LMIC.frame, dlen-4) ) { |
mluis | 1:d3b7bde3995c | 1365 | EV(specCond, ERR, (e_.reason = EV::specCond_t::JOIN_BAD_MIC, |
mluis | 1:d3b7bde3995c | 1366 | e_.info = mic)); |
mluis | 1:d3b7bde3995c | 1367 | goto badframe; |
mluis | 0:62d1edcc13d1 | 1368 | } |
mluis | 0:62d1edcc13d1 | 1369 | |
mluis | 0:62d1edcc13d1 | 1370 | u4_t addr = os_rlsbf4(LMIC.frame+OFF_JA_DEVADDR); |
mluis | 0:62d1edcc13d1 | 1371 | LMIC.devaddr = addr; |
mluis | 1:d3b7bde3995c | 1372 | LMIC.netid = os_rlsbf4(&LMIC.frame[OFF_JA_NETID]) & 0xFFFFFF; |
mluis | 0:62d1edcc13d1 | 1373 | |
mluis | 1:d3b7bde3995c | 1374 | #if defined(CFG_eu868) |
mluis | 0:62d1edcc13d1 | 1375 | initDefaultChannels(0); |
mluis | 0:62d1edcc13d1 | 1376 | #endif |
mluis | 0:62d1edcc13d1 | 1377 | if( dlen > LEN_JA ) { |
mluis | 1:d3b7bde3995c | 1378 | dlen = OFF_CFLIST; |
mluis | 1:d3b7bde3995c | 1379 | #if defined(CFG_eu868) |
mluis | 1:d3b7bde3995c | 1380 | u1_t chidx=3; |
mluis | 1:d3b7bde3995c | 1381 | #elif defined(CFG_us915) |
mluis | 1:d3b7bde3995c | 1382 | u1_t chidx=72; |
mluis | 0:62d1edcc13d1 | 1383 | #endif |
mluis | 1:d3b7bde3995c | 1384 | for( ; chidx<8; chidx++, dlen+=3 ) |
mluis | 3:519c71d29a06 | 1385 | LMIC_setupChannel(chidx, convFreq(&LMIC.frame[dlen]), 0, -1); |
mluis | 0:62d1edcc13d1 | 1386 | } |
mluis | 0:62d1edcc13d1 | 1387 | |
mluis | 0:62d1edcc13d1 | 1388 | // already incremented when JOIN REQ got sent off |
mluis | 0:62d1edcc13d1 | 1389 | aes_sessKeys(LMIC.devNonce-1, &LMIC.frame[OFF_JA_ARTNONCE], LMIC.nwkKey, LMIC.artKey); |
mluis | 1:d3b7bde3995c | 1390 | DO_DEVDB(LMIC.netid, netid); |
mluis | 1:d3b7bde3995c | 1391 | DO_DEVDB(LMIC.devaddr, devaddr); |
mluis | 1:d3b7bde3995c | 1392 | DO_DEVDB(LMIC.nwkKey, nwkkey); |
mluis | 1:d3b7bde3995c | 1393 | DO_DEVDB(LMIC.artKey, artkey); |
mluis | 0:62d1edcc13d1 | 1394 | |
mluis | 0:62d1edcc13d1 | 1395 | EV(joininfo, INFO, (e_.arteui = MAIN::CDEV->getArtEui(), |
mluis | 1:d3b7bde3995c | 1396 | e_.deveui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1397 | e_.devaddr = LMIC.devaddr, |
mluis | 1:d3b7bde3995c | 1398 | e_.oldaddr = oldaddr, |
mluis | 1:d3b7bde3995c | 1399 | e_.nonce = LMIC.devNonce-1, |
mluis | 1:d3b7bde3995c | 1400 | e_.mic = mic, |
mluis | 1:d3b7bde3995c | 1401 | e_.reason = ((LMIC.opmode & OP_REJOIN) != 0 |
mluis | 1:d3b7bde3995c | 1402 | ? EV::joininfo_t::REJOIN_ACCEPT |
mluis | 1:d3b7bde3995c | 1403 | : EV::joininfo_t::ACCEPT))); |
mluis | 0:62d1edcc13d1 | 1404 | |
mluis | 0:62d1edcc13d1 | 1405 | ASSERT((LMIC.opmode & (OP_JOINING|OP_REJOIN))!=0); |
mluis | 0:62d1edcc13d1 | 1406 | if( (LMIC.opmode & OP_REJOIN) != 0 ) { |
mluis | 1:d3b7bde3995c | 1407 | // Lower DR every try below current UP DR |
mluis | 1:d3b7bde3995c | 1408 | LMIC.datarate = lowerDR(LMIC.datarate, LMIC.rejoinCnt); |
mluis | 0:62d1edcc13d1 | 1409 | } |
mluis | 0:62d1edcc13d1 | 1410 | LMIC.opmode &= ~(OP_JOINING|OP_TRACK|OP_REJOIN|OP_TXRXPEND|OP_PINGINI) | OP_NEXTCHNL; |
mluis | 0:62d1edcc13d1 | 1411 | stateJustJoined(); |
mluis | 0:62d1edcc13d1 | 1412 | reportEvent(EV_JOINED); |
mluis | 0:62d1edcc13d1 | 1413 | return 1; |
mluis | 0:62d1edcc13d1 | 1414 | } |
mluis | 0:62d1edcc13d1 | 1415 | |
mluis | 1:d3b7bde3995c | 1416 | |
mluis | 1:d3b7bde3995c | 1417 | static void processRx2Jacc (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1418 | if( LMIC.dataLen == 0 ) |
mluis | 1:d3b7bde3995c | 1419 | LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot |
mluis | 0:62d1edcc13d1 | 1420 | processJoinAccept(); |
mluis | 0:62d1edcc13d1 | 1421 | } |
mluis | 0:62d1edcc13d1 | 1422 | |
mluis | 1:d3b7bde3995c | 1423 | |
mluis | 1:d3b7bde3995c | 1424 | static void setupRx2Jacc (xref2osjob_t osjob) { |
mluis | 1:d3b7bde3995c | 1425 | LMIC.osjob.func = FUNC_ADDR(processRx2Jacc); |
mluis | 1:d3b7bde3995c | 1426 | setupRx2(); |
mluis | 1:d3b7bde3995c | 1427 | } |
mluis | 1:d3b7bde3995c | 1428 | |
mluis | 1:d3b7bde3995c | 1429 | |
mluis | 1:d3b7bde3995c | 1430 | static void processRx1Jacc (xref2osjob_t osjob) { |
mluis | 1:d3b7bde3995c | 1431 | if( LMIC.dataLen == 0 || !processJoinAccept() ) |
mluis | 1:d3b7bde3995c | 1432 | schedRx2(DELAY_JACC2_osticks, FUNC_ADDR(setupRx2Jacc)); |
mluis | 1:d3b7bde3995c | 1433 | } |
mluis | 1:d3b7bde3995c | 1434 | |
mluis | 1:d3b7bde3995c | 1435 | |
mluis | 0:62d1edcc13d1 | 1436 | static void setupRx1Jacc (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1437 | setupRx1(FUNC_ADDR(processRx1Jacc)); |
mluis | 0:62d1edcc13d1 | 1438 | } |
mluis | 0:62d1edcc13d1 | 1439 | |
mluis | 0:62d1edcc13d1 | 1440 | |
mluis | 0:62d1edcc13d1 | 1441 | static void jreqDone (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1442 | txDone(DELAY_JACC1_osticks, FUNC_ADDR(setupRx1Jacc)); |
mluis | 0:62d1edcc13d1 | 1443 | } |
mluis | 0:62d1edcc13d1 | 1444 | |
mluis | 0:62d1edcc13d1 | 1445 | // ======================================== Data frames |
mluis | 0:62d1edcc13d1 | 1446 | |
mluis | 0:62d1edcc13d1 | 1447 | // Fwd decl. |
mluis | 0:62d1edcc13d1 | 1448 | static bit_t processDnData(void); |
mluis | 0:62d1edcc13d1 | 1449 | |
mluis | 1:d3b7bde3995c | 1450 | static void processRx2DnDataDelay (xref2osjob_t osjob) { |
mluis | 1:d3b7bde3995c | 1451 | processDnData(); |
mluis | 1:d3b7bde3995c | 1452 | } |
mluis | 1:d3b7bde3995c | 1453 | |
mluis | 0:62d1edcc13d1 | 1454 | static void processRx2DnData (xref2osjob_t osjob) { |
mluis | 1:d3b7bde3995c | 1455 | if( LMIC.dataLen == 0 ) { |
mluis | 1:d3b7bde3995c | 1456 | LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot |
mluis | 1:d3b7bde3995c | 1457 | // Delay callback processing to avoid up TX while gateway is txing our missed frame! |
mluis | 1:d3b7bde3995c | 1458 | // Since DNW2 uses SF12 by default we wait 3 secs. |
mluis | 1:d3b7bde3995c | 1459 | os_setTimedCallback(&LMIC.osjob, |
mluis | 1:d3b7bde3995c | 1460 | (os_getTime() + DNW2_SAFETY_ZONE + rndDelay(2)), |
mluis | 1:d3b7bde3995c | 1461 | processRx2DnDataDelay); |
mluis | 1:d3b7bde3995c | 1462 | return; |
mluis | 1:d3b7bde3995c | 1463 | } |
mluis | 0:62d1edcc13d1 | 1464 | processDnData(); |
mluis | 0:62d1edcc13d1 | 1465 | } |
mluis | 0:62d1edcc13d1 | 1466 | |
mluis | 0:62d1edcc13d1 | 1467 | |
mluis | 0:62d1edcc13d1 | 1468 | static void setupRx2DnData (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1469 | LMIC.osjob.func = FUNC_ADDR(processRx2DnData); |
mluis | 0:62d1edcc13d1 | 1470 | setupRx2(); |
mluis | 0:62d1edcc13d1 | 1471 | } |
mluis | 0:62d1edcc13d1 | 1472 | |
mluis | 0:62d1edcc13d1 | 1473 | |
mluis | 0:62d1edcc13d1 | 1474 | static void processRx1DnData (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1475 | if( LMIC.dataLen == 0 || !processDnData() ) |
mluis | 1:d3b7bde3995c | 1476 | schedRx2(DELAY_DNW2_osticks, FUNC_ADDR(setupRx2DnData)); |
mluis | 0:62d1edcc13d1 | 1477 | } |
mluis | 0:62d1edcc13d1 | 1478 | |
mluis | 0:62d1edcc13d1 | 1479 | |
mluis | 0:62d1edcc13d1 | 1480 | static void setupRx1DnData (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1481 | setupRx1(FUNC_ADDR(processRx1DnData)); |
mluis | 0:62d1edcc13d1 | 1482 | } |
mluis | 0:62d1edcc13d1 | 1483 | |
mluis | 0:62d1edcc13d1 | 1484 | |
mluis | 0:62d1edcc13d1 | 1485 | static void updataDone (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1486 | txDone(DELAY_DNW1_osticks, FUNC_ADDR(setupRx1DnData)); |
mluis | 0:62d1edcc13d1 | 1487 | } |
mluis | 0:62d1edcc13d1 | 1488 | |
mluis | 0:62d1edcc13d1 | 1489 | // ======================================== |
mluis | 0:62d1edcc13d1 | 1490 | |
mluis | 0:62d1edcc13d1 | 1491 | |
mluis | 0:62d1edcc13d1 | 1492 | static void buildDataFrame (void) { |
mluis | 0:62d1edcc13d1 | 1493 | bit_t txdata = ((LMIC.opmode & (OP_TXDATA|OP_POLL)) != OP_POLL); |
mluis | 0:62d1edcc13d1 | 1494 | u1_t dlen = txdata ? LMIC.pendTxLen : 0; |
mluis | 0:62d1edcc13d1 | 1495 | |
mluis | 0:62d1edcc13d1 | 1496 | // Piggyback MAC options |
mluis | 0:62d1edcc13d1 | 1497 | // Prioritize by importance |
mluis | 0:62d1edcc13d1 | 1498 | int end = OFF_DAT_OPTS; |
mluis | 0:62d1edcc13d1 | 1499 | if( (LMIC.opmode & (OP_TRACK|OP_PINGABLE)) == (OP_TRACK|OP_PINGABLE) ) { |
mluis | 1:d3b7bde3995c | 1500 | // Indicate pingability in every UP frame |
mluis | 1:d3b7bde3995c | 1501 | LMIC.frame[end] = MCMD_PING_IND; |
mluis | 1:d3b7bde3995c | 1502 | LMIC.frame[end+1] = LMIC.ping.dr | (LMIC.ping.intvExp<<4); |
mluis | 1:d3b7bde3995c | 1503 | end += 2; |
mluis | 0:62d1edcc13d1 | 1504 | } |
mluis | 0:62d1edcc13d1 | 1505 | if( LMIC.dutyCapAns ) { |
mluis | 1:d3b7bde3995c | 1506 | LMIC.frame[end] = MCMD_DCAP_ANS; |
mluis | 1:d3b7bde3995c | 1507 | end += 1; |
mluis | 1:d3b7bde3995c | 1508 | LMIC.dutyCapAns = 0; |
mluis | 0:62d1edcc13d1 | 1509 | } |
mluis | 0:62d1edcc13d1 | 1510 | if( LMIC.dn2Ans ) { |
mluis | 1:d3b7bde3995c | 1511 | LMIC.frame[end+0] = MCMD_DN2P_ANS; |
mluis | 1:d3b7bde3995c | 1512 | LMIC.frame[end+1] = LMIC.dn2Ans & ~MCMD_DN2P_ANS_RFU; |
mluis | 1:d3b7bde3995c | 1513 | end += 2; |
mluis | 1:d3b7bde3995c | 1514 | LMIC.dn2Ans = 0; |
mluis | 0:62d1edcc13d1 | 1515 | } |
mluis | 0:62d1edcc13d1 | 1516 | if( LMIC.devsAns ) { // answer to device status |
mluis | 1:d3b7bde3995c | 1517 | LMIC.frame[end+0] = MCMD_DEVS_ANS; |
mluis | 1:d3b7bde3995c | 1518 | LMIC.frame[end+1] = LMIC.margin; |
mluis | 1:d3b7bde3995c | 1519 | LMIC.frame[end+2] = os_getBattLevel(); |
mluis | 1:d3b7bde3995c | 1520 | end += 3; |
mluis | 1:d3b7bde3995c | 1521 | LMIC.devsAns = 0; |
mluis | 0:62d1edcc13d1 | 1522 | } |
mluis | 0:62d1edcc13d1 | 1523 | if( LMIC.ladrAns ) { // answer to ADR change |
mluis | 1:d3b7bde3995c | 1524 | LMIC.frame[end+0] = MCMD_LADR_ANS; |
mluis | 1:d3b7bde3995c | 1525 | LMIC.frame[end+1] = LMIC.ladrAns & ~MCMD_LADR_ANS_RFU; |
mluis | 1:d3b7bde3995c | 1526 | end += 2; |
mluis | 1:d3b7bde3995c | 1527 | LMIC.ladrAns = 0; |
mluis | 0:62d1edcc13d1 | 1528 | } |
mluis | 0:62d1edcc13d1 | 1529 | if( LMIC.bcninfoTries > 0 ) { |
mluis | 1:d3b7bde3995c | 1530 | LMIC.frame[end] = MCMD_BCNI_REQ; |
mluis | 1:d3b7bde3995c | 1531 | end += 1; |
mluis | 0:62d1edcc13d1 | 1532 | } |
mluis | 0:62d1edcc13d1 | 1533 | if( LMIC.adrChanged ) { |
mluis | 1:d3b7bde3995c | 1534 | if( LMIC.adrAckReq < 0 ) |
mluis | 1:d3b7bde3995c | 1535 | LMIC.adrAckReq = 0; |
mluis | 1:d3b7bde3995c | 1536 | LMIC.adrChanged = 0; |
mluis | 0:62d1edcc13d1 | 1537 | } |
mluis | 0:62d1edcc13d1 | 1538 | if( LMIC.pingSetAns != 0 ) { |
mluis | 1:d3b7bde3995c | 1539 | LMIC.frame[end+0] = MCMD_PING_ANS; |
mluis | 1:d3b7bde3995c | 1540 | LMIC.frame[end+1] = LMIC.pingSetAns & ~MCMD_PING_ANS_RFU; |
mluis | 1:d3b7bde3995c | 1541 | end += 2; |
mluis | 1:d3b7bde3995c | 1542 | LMIC.pingSetAns = 0; |
mluis | 0:62d1edcc13d1 | 1543 | } |
mluis | 0:62d1edcc13d1 | 1544 | if( LMIC.snchAns ) { |
mluis | 1:d3b7bde3995c | 1545 | LMIC.frame[end+0] = MCMD_SNCH_ANS; |
mluis | 1:d3b7bde3995c | 1546 | LMIC.frame[end+1] = LMIC.snchAns & ~MCMD_SNCH_ANS_RFU; |
mluis | 1:d3b7bde3995c | 1547 | end += 2; |
mluis | 1:d3b7bde3995c | 1548 | LMIC.snchAns = 0; |
mluis | 0:62d1edcc13d1 | 1549 | } |
mluis | 0:62d1edcc13d1 | 1550 | ASSERT(end <= OFF_DAT_OPTS+16); |
mluis | 0:62d1edcc13d1 | 1551 | |
mluis | 0:62d1edcc13d1 | 1552 | u1_t flen = end + (txdata ? 5+dlen : 4); |
mluis | 0:62d1edcc13d1 | 1553 | if( flen > MAX_LEN_FRAME ) { |
mluis | 1:d3b7bde3995c | 1554 | // Options and payload too big - delay payload |
mluis | 1:d3b7bde3995c | 1555 | txdata = 0; |
mluis | 1:d3b7bde3995c | 1556 | flen = end+4; |
mluis | 0:62d1edcc13d1 | 1557 | } |
mluis | 0:62d1edcc13d1 | 1558 | LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DAUP | HDR_MAJOR_V1; |
mluis | 0:62d1edcc13d1 | 1559 | LMIC.frame[OFF_DAT_FCT] = (LMIC.dnConf | LMIC.adrEnabled |
mluis | 1:d3b7bde3995c | 1560 | | (LMIC.adrAckReq >= 0 ? FCT_ADRARQ : 0) |
mluis | 1:d3b7bde3995c | 1561 | | (end-OFF_DAT_OPTS)); |
mluis | 0:62d1edcc13d1 | 1562 | os_wlsbf4(LMIC.frame+OFF_DAT_ADDR, LMIC.devaddr); |
mluis | 0:62d1edcc13d1 | 1563 | |
mluis | 0:62d1edcc13d1 | 1564 | if( LMIC.txCnt == 0 ) { |
mluis | 1:d3b7bde3995c | 1565 | LMIC.seqnoUp += 1; |
mluis | 1:d3b7bde3995c | 1566 | DO_DEVDB(LMIC.seqnoUp,seqnoUp); |
mluis | 0:62d1edcc13d1 | 1567 | } else { |
mluis | 1:d3b7bde3995c | 1568 | EV(devCond, INFO, (e_.reason = EV::devCond_t::RE_TX, |
mluis | 1:d3b7bde3995c | 1569 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1570 | e_.info = LMIC.seqnoUp-1, |
mluis | 1:d3b7bde3995c | 1571 | e_.info2 = ((LMIC.txCnt+1) | |
mluis | 1:d3b7bde3995c | 1572 | (DRADJUST[LMIC.txCnt+1] << 8) | |
mluis | 1:d3b7bde3995c | 1573 | ((LMIC.datarate|DR_PAGE)<<16)))); |
mluis | 0:62d1edcc13d1 | 1574 | } |
mluis | 0:62d1edcc13d1 | 1575 | os_wlsbf2(LMIC.frame+OFF_DAT_SEQNO, LMIC.seqnoUp-1); |
mluis | 0:62d1edcc13d1 | 1576 | |
mluis | 0:62d1edcc13d1 | 1577 | // Clear pending DN confirmation |
mluis | 0:62d1edcc13d1 | 1578 | LMIC.dnConf = 0; |
mluis | 0:62d1edcc13d1 | 1579 | |
mluis | 0:62d1edcc13d1 | 1580 | if( txdata ) { |
mluis | 1:d3b7bde3995c | 1581 | if( LMIC.pendTxConf ) { |
mluis | 1:d3b7bde3995c | 1582 | // Confirmed only makes sense if we have a payload (or at least a port) |
mluis | 1:d3b7bde3995c | 1583 | LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DCUP | HDR_MAJOR_V1; |
mluis | 1:d3b7bde3995c | 1584 | if( LMIC.txCnt == 0 ) LMIC.txCnt = 1; |
mluis | 1:d3b7bde3995c | 1585 | } |
mluis | 1:d3b7bde3995c | 1586 | LMIC.frame[end] = LMIC.pendTxPort; |
mluis | 1:d3b7bde3995c | 1587 | os_copyMem(LMIC.frame+end+1, LMIC.pendTxData, dlen); |
mluis | 1:d3b7bde3995c | 1588 | aes_cipher(LMIC.pendTxPort==0 ? LMIC.nwkKey : LMIC.artKey, |
mluis | 1:d3b7bde3995c | 1589 | LMIC.devaddr, LMIC.seqnoUp-1, |
mluis | 1:d3b7bde3995c | 1590 | /*up*/0, LMIC.frame+end+1, dlen); |
mluis | 0:62d1edcc13d1 | 1591 | } |
mluis | 0:62d1edcc13d1 | 1592 | aes_appendMic(LMIC.nwkKey, LMIC.devaddr, LMIC.seqnoUp-1, /*up*/0, LMIC.frame, flen-4); |
mluis | 0:62d1edcc13d1 | 1593 | |
mluis | 0:62d1edcc13d1 | 1594 | EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1595 | e_.devaddr = LMIC.devaddr, |
mluis | 1:d3b7bde3995c | 1596 | e_.seqno = LMIC.seqnoUp-1, |
mluis | 1:d3b7bde3995c | 1597 | e_.flags = (LMIC.pendTxPort < 0 ? EV::dfinfo_t::NOPORT : EV::dfinfo_t::NOP), |
mluis | 1:d3b7bde3995c | 1598 | e_.mic = Base::lsbf4(&LMIC.frame[flen-4]), |
mluis | 1:d3b7bde3995c | 1599 | e_.hdr = LMIC.frame[LORA::OFF_DAT_HDR], |
mluis | 1:d3b7bde3995c | 1600 | e_.fct = LMIC.frame[LORA::OFF_DAT_FCT], |
mluis | 1:d3b7bde3995c | 1601 | e_.port = LMIC.pendTxPort, |
mluis | 1:d3b7bde3995c | 1602 | e_.plen = txdata ? dlen : 0, |
mluis | 1:d3b7bde3995c | 1603 | e_.opts.length = end-LORA::OFF_DAT_OPTS, |
mluis | 1:d3b7bde3995c | 1604 | memcpy(&e_.opts[0], LMIC.frame+LORA::OFF_DAT_OPTS, end-LORA::OFF_DAT_OPTS))); |
mluis | 0:62d1edcc13d1 | 1605 | LMIC.dataLen = flen; |
mluis | 0:62d1edcc13d1 | 1606 | } |
mluis | 0:62d1edcc13d1 | 1607 | |
mluis | 0:62d1edcc13d1 | 1608 | |
mluis | 0:62d1edcc13d1 | 1609 | // Callback from HAL during scan mode or when job timer expires. |
mluis | 0:62d1edcc13d1 | 1610 | static void onBcnRx (xref2osjob_t job) { |
mluis | 0:62d1edcc13d1 | 1611 | // If we arrive via job timer make sure to put radio to rest. |
mluis | 0:62d1edcc13d1 | 1612 | os_radio(RADIO_RST); |
mluis | 0:62d1edcc13d1 | 1613 | os_clearCallback(&LMIC.osjob); |
mluis | 0:62d1edcc13d1 | 1614 | if( LMIC.dataLen == 0 ) { |
mluis | 1:d3b7bde3995c | 1615 | // Nothing received - timeout |
mluis | 1:d3b7bde3995c | 1616 | LMIC.opmode &= ~(OP_SCAN | OP_TRACK); |
mluis | 1:d3b7bde3995c | 1617 | reportEvent(EV_SCAN_TIMEOUT); |
mluis | 1:d3b7bde3995c | 1618 | return; |
mluis | 0:62d1edcc13d1 | 1619 | } |
mluis | 0:62d1edcc13d1 | 1620 | if( decodeBeacon() <= 0 ) { |
mluis | 1:d3b7bde3995c | 1621 | // Something is wrong with the beacon - continue scan |
mluis | 1:d3b7bde3995c | 1622 | LMIC.dataLen = 0; |
mluis | 1:d3b7bde3995c | 1623 | os_radio(RADIO_RXON); |
mluis | 1:d3b7bde3995c | 1624 | os_setTimedCallback(&LMIC.osjob, LMIC.bcninfo.txtime, FUNC_ADDR(onBcnRx)); |
mluis | 1:d3b7bde3995c | 1625 | return; |
mluis | 0:62d1edcc13d1 | 1626 | } |
mluis | 0:62d1edcc13d1 | 1627 | // Found our 1st beacon |
mluis | 0:62d1edcc13d1 | 1628 | // We don't have a previous beacon to calc some drift - assume |
mluis | 0:62d1edcc13d1 | 1629 | // an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm |
mluis | 0:62d1edcc13d1 | 1630 | calcBcnRxWindowFromMillis(13,1); |
mluis | 0:62d1edcc13d1 | 1631 | LMIC.opmode &= ~OP_SCAN; // turn SCAN off |
mluis | 0:62d1edcc13d1 | 1632 | LMIC.opmode |= OP_TRACK; // auto enable tracking |
mluis | 0:62d1edcc13d1 | 1633 | reportEvent(EV_BEACON_FOUND); // can be disabled in callback |
mluis | 0:62d1edcc13d1 | 1634 | } |
mluis | 0:62d1edcc13d1 | 1635 | |
mluis | 0:62d1edcc13d1 | 1636 | |
mluis | 0:62d1edcc13d1 | 1637 | // Enable receiver to listen to incoming beacons |
mluis | 0:62d1edcc13d1 | 1638 | // netid defines when scan stops (any or specific beacon) |
mluis | 0:62d1edcc13d1 | 1639 | // This mode ends with events: EV_SCAN_TIMEOUT/EV_SCAN_BEACON |
mluis | 0:62d1edcc13d1 | 1640 | // Implicitely cancels any pending TX/RX transaction. |
mluis | 0:62d1edcc13d1 | 1641 | // Also cancels an onpoing joining procedure. |
mluis | 0:62d1edcc13d1 | 1642 | static void startScan (void) { |
mluis | 0:62d1edcc13d1 | 1643 | ASSERT(LMIC.devaddr!=0 && (LMIC.opmode & OP_JOINING)==0); |
mluis | 0:62d1edcc13d1 | 1644 | if( (LMIC.opmode & OP_SHUTDOWN) != 0 ) |
mluis | 1:d3b7bde3995c | 1645 | return; |
mluis | 0:62d1edcc13d1 | 1646 | // Cancel onging TX/RX transaction |
mluis | 0:62d1edcc13d1 | 1647 | LMIC.txCnt = LMIC.dnConf = LMIC.bcninfo.flags = 0; |
mluis | 0:62d1edcc13d1 | 1648 | LMIC.opmode = (LMIC.opmode | OP_SCAN) & ~(OP_TXRXPEND); |
mluis | 0:62d1edcc13d1 | 1649 | setBcnRxParams(); |
mluis | 0:62d1edcc13d1 | 1650 | LMIC.rxtime = LMIC.bcninfo.txtime = os_getTime() + sec2osticks(BCN_INTV_sec+1); |
mluis | 0:62d1edcc13d1 | 1651 | os_setTimedCallback(&LMIC.osjob, LMIC.rxtime, FUNC_ADDR(onBcnRx)); |
mluis | 0:62d1edcc13d1 | 1652 | os_radio(RADIO_RXON); |
mluis | 0:62d1edcc13d1 | 1653 | } |
mluis | 0:62d1edcc13d1 | 1654 | |
mluis | 0:62d1edcc13d1 | 1655 | |
mluis | 0:62d1edcc13d1 | 1656 | bit_t LMIC_enableTracking (u1_t tryBcnInfo) { |
mluis | 0:62d1edcc13d1 | 1657 | if( (LMIC.opmode & (OP_SCAN|OP_TRACK|OP_SHUTDOWN)) != 0 ) |
mluis | 1:d3b7bde3995c | 1658 | return 0; // already in progress or failed to enable |
mluis | 0:62d1edcc13d1 | 1659 | // If BCN info requested from NWK then app has to take are |
mluis | 0:62d1edcc13d1 | 1660 | // of sending data up so that MCMD_BCNI_REQ can be attached. |
mluis | 0:62d1edcc13d1 | 1661 | if( (LMIC.bcninfoTries = tryBcnInfo) == 0 ) |
mluis | 1:d3b7bde3995c | 1662 | startScan(); |
mluis | 0:62d1edcc13d1 | 1663 | return 1; // enabled |
mluis | 0:62d1edcc13d1 | 1664 | } |
mluis | 0:62d1edcc13d1 | 1665 | |
mluis | 0:62d1edcc13d1 | 1666 | |
mluis | 0:62d1edcc13d1 | 1667 | void LMIC_disableTracking (void) { |
mluis | 0:62d1edcc13d1 | 1668 | LMIC.opmode &= ~(OP_SCAN|OP_TRACK); |
mluis | 0:62d1edcc13d1 | 1669 | LMIC.bcninfoTries = 0; |
mluis | 0:62d1edcc13d1 | 1670 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 1671 | } |
mluis | 0:62d1edcc13d1 | 1672 | |
mluis | 0:62d1edcc13d1 | 1673 | |
mluis | 0:62d1edcc13d1 | 1674 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 1675 | // |
mluis | 0:62d1edcc13d1 | 1676 | // Join stuff |
mluis | 0:62d1edcc13d1 | 1677 | // |
mluis | 0:62d1edcc13d1 | 1678 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 1679 | |
mluis | 0:62d1edcc13d1 | 1680 | static void buildJoinRequest (u1_t ftype) { |
mluis | 0:62d1edcc13d1 | 1681 | // Do not use pendTxData since we might have a pending |
mluis | 0:62d1edcc13d1 | 1682 | // user level frame in there. Use RX holding area instead. |
mluis | 0:62d1edcc13d1 | 1683 | xref2u1_t d = LMIC.frame; |
mluis | 0:62d1edcc13d1 | 1684 | d[OFF_JR_HDR] = ftype; |
mluis | 0:62d1edcc13d1 | 1685 | os_getArtEui(d + OFF_JR_ARTEUI); |
mluis | 0:62d1edcc13d1 | 1686 | os_getDevEui(d + OFF_JR_DEVEUI); |
mluis | 0:62d1edcc13d1 | 1687 | os_wlsbf2(d + OFF_JR_DEVNONCE, LMIC.devNonce); |
mluis | 0:62d1edcc13d1 | 1688 | aes_appendMic0(d, OFF_JR_MIC); |
mluis | 0:62d1edcc13d1 | 1689 | |
mluis | 0:62d1edcc13d1 | 1690 | EV(joininfo,INFO,(e_.deveui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1691 | e_.arteui = MAIN::CDEV->getArtEui(), |
mluis | 1:d3b7bde3995c | 1692 | e_.nonce = LMIC.devNonce, |
mluis | 1:d3b7bde3995c | 1693 | e_.oldaddr = LMIC.devaddr, |
mluis | 1:d3b7bde3995c | 1694 | e_.mic = Base::lsbf4(&d[LORA::OFF_JR_MIC]), |
mluis | 1:d3b7bde3995c | 1695 | e_.reason = ((LMIC.opmode & OP_REJOIN) != 0 |
mluis | 1:d3b7bde3995c | 1696 | ? EV::joininfo_t::REJOIN_REQUEST |
mluis | 1:d3b7bde3995c | 1697 | : EV::joininfo_t::REQUEST))); |
mluis | 0:62d1edcc13d1 | 1698 | LMIC.dataLen = LEN_JR; |
mluis | 0:62d1edcc13d1 | 1699 | LMIC.devNonce++; |
mluis | 1:d3b7bde3995c | 1700 | DO_DEVDB(LMIC.devNonce,devNonce); |
mluis | 0:62d1edcc13d1 | 1701 | } |
mluis | 0:62d1edcc13d1 | 1702 | |
mluis | 0:62d1edcc13d1 | 1703 | static void startJoining (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1704 | reportEvent(EV_JOINING); |
mluis | 0:62d1edcc13d1 | 1705 | } |
mluis | 0:62d1edcc13d1 | 1706 | |
mluis | 0:62d1edcc13d1 | 1707 | // Start join procedure if not already joined. |
mluis | 0:62d1edcc13d1 | 1708 | bit_t LMIC_startJoining (void) { |
mluis | 0:62d1edcc13d1 | 1709 | if( LMIC.devaddr == 0 ) { |
mluis | 1:d3b7bde3995c | 1710 | // There should be no TX/RX going on |
mluis | 1:d3b7bde3995c | 1711 | ASSERT((LMIC.opmode & (OP_POLL|OP_TXRXPEND)) == 0); |
mluis | 1:d3b7bde3995c | 1712 | // Lift any previous duty limitation |
mluis | 1:d3b7bde3995c | 1713 | LMIC.globalDutyRate = 0; |
mluis | 1:d3b7bde3995c | 1714 | // Cancel scanning |
mluis | 1:d3b7bde3995c | 1715 | LMIC.opmode &= ~(OP_SCAN|OP_REJOIN|OP_LINKDEAD|OP_NEXTCHNL); |
mluis | 1:d3b7bde3995c | 1716 | // Setup state |
mluis | 1:d3b7bde3995c | 1717 | LMIC.rejoinCnt = LMIC.txCnt = LMIC.pendTxConf = 0; |
mluis | 1:d3b7bde3995c | 1718 | initJoinLoop(); |
mluis | 1:d3b7bde3995c | 1719 | LMIC.opmode |= OP_JOINING; |
mluis | 1:d3b7bde3995c | 1720 | // reportEvent will call engineUpdate which then starts sending JOIN REQUESTS |
mluis | 1:d3b7bde3995c | 1721 | os_setCallback(&LMIC.osjob, FUNC_ADDR(startJoining)); |
mluis | 1:d3b7bde3995c | 1722 | return 1; |
mluis | 0:62d1edcc13d1 | 1723 | } |
mluis | 1:d3b7bde3995c | 1724 | return 0; // already joined |
mluis | 0:62d1edcc13d1 | 1725 | } |
mluis | 0:62d1edcc13d1 | 1726 | |
mluis | 0:62d1edcc13d1 | 1727 | |
mluis | 0:62d1edcc13d1 | 1728 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 1729 | // |
mluis | 0:62d1edcc13d1 | 1730 | // |
mluis | 0:62d1edcc13d1 | 1731 | // |
mluis | 0:62d1edcc13d1 | 1732 | // ================================================================================ |
mluis | 0:62d1edcc13d1 | 1733 | |
mluis | 0:62d1edcc13d1 | 1734 | static void processPingRx (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1735 | if( LMIC.dataLen != 0 ) { |
mluis | 1:d3b7bde3995c | 1736 | LMIC.txrxFlags = TXRX_PING; |
mluis | 1:d3b7bde3995c | 1737 | if( decodeFrame() ) { |
mluis | 1:d3b7bde3995c | 1738 | reportEvent(EV_RXCOMPLETE); |
mluis | 1:d3b7bde3995c | 1739 | return; |
mluis | 1:d3b7bde3995c | 1740 | } |
mluis | 0:62d1edcc13d1 | 1741 | } |
mluis | 0:62d1edcc13d1 | 1742 | // Pick next ping slot |
mluis | 0:62d1edcc13d1 | 1743 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 1744 | } |
mluis | 0:62d1edcc13d1 | 1745 | |
mluis | 0:62d1edcc13d1 | 1746 | |
mluis | 0:62d1edcc13d1 | 1747 | static bit_t processDnData (void) { |
mluis | 0:62d1edcc13d1 | 1748 | ASSERT((LMIC.opmode & OP_TXRXPEND)!=0); |
mluis | 0:62d1edcc13d1 | 1749 | |
mluis | 0:62d1edcc13d1 | 1750 | if( LMIC.dataLen == 0 ) { |
mluis | 0:62d1edcc13d1 | 1751 | norx: |
mluis | 1:d3b7bde3995c | 1752 | if( LMIC.txCnt != 0 ) { |
mluis | 1:d3b7bde3995c | 1753 | if( LMIC.txCnt < TXCONF_ATTEMPTS ) { |
mluis | 1:d3b7bde3995c | 1754 | LMIC.txCnt += 1; |
mluis | 1:d3b7bde3995c | 1755 | setDrTxpow(DRCHG_NOACK, lowerDR(LMIC.datarate, DRADJUST[LMIC.txCnt]), KEEP_TXPOW); |
mluis | 1:d3b7bde3995c | 1756 | // Schedule another retransmission |
mluis | 1:d3b7bde3995c | 1757 | txDelay(LMIC.rxtime, RETRY_PERIOD_secs); |
mluis | 1:d3b7bde3995c | 1758 | LMIC.opmode &= ~OP_TXRXPEND; |
mluis | 1:d3b7bde3995c | 1759 | engineUpdate(); |
mluis | 1:d3b7bde3995c | 1760 | return 1; |
mluis | 1:d3b7bde3995c | 1761 | } |
mluis | 1:d3b7bde3995c | 1762 | LMIC.txrxFlags = TXRX_NACK | TXRX_NOPORT; |
mluis | 1:d3b7bde3995c | 1763 | } else { |
mluis | 1:d3b7bde3995c | 1764 | // Nothing received - implies no port |
mluis | 1:d3b7bde3995c | 1765 | LMIC.txrxFlags = TXRX_NOPORT; |
mluis | 0:62d1edcc13d1 | 1766 | } |
mluis | 1:d3b7bde3995c | 1767 | if( LMIC.adrAckReq != LINK_CHECK_OFF ) |
mluis | 1:d3b7bde3995c | 1768 | LMIC.adrAckReq += 1; |
mluis | 1:d3b7bde3995c | 1769 | LMIC.dataBeg = LMIC.dataLen = 0; |
mluis | 0:62d1edcc13d1 | 1770 | txcomplete: |
mluis | 1:d3b7bde3995c | 1771 | LMIC.opmode &= ~(OP_TXDATA|OP_TXRXPEND); |
mluis | 1:d3b7bde3995c | 1772 | if( (LMIC.txrxFlags & (TXRX_DNW1|TXRX_DNW2|TXRX_PING)) != 0 && (LMIC.opmode & OP_LINKDEAD) != 0 ) { |
mluis | 1:d3b7bde3995c | 1773 | LMIC.opmode &= ~OP_LINKDEAD; |
mluis | 1:d3b7bde3995c | 1774 | reportEvent(EV_LINK_ALIVE); |
mluis | 1:d3b7bde3995c | 1775 | } |
mluis | 1:d3b7bde3995c | 1776 | reportEvent(EV_TXCOMPLETE); |
mluis | 1:d3b7bde3995c | 1777 | // If we haven't heard from NWK in a while although we asked for a sign |
mluis | 1:d3b7bde3995c | 1778 | // assume link is dead - notify application and keep going |
mluis | 1:d3b7bde3995c | 1779 | if( LMIC.adrAckReq > LINK_CHECK_DEAD ) { |
mluis | 1:d3b7bde3995c | 1780 | // We haven't heard from NWK for some time although we |
mluis | 1:d3b7bde3995c | 1781 | // asked for a response for some time - assume we're disconnected. Lower DR one notch. |
mluis | 1:d3b7bde3995c | 1782 | EV(devCond, ERR, (e_.reason = EV::devCond_t::LINK_DEAD, |
mluis | 1:d3b7bde3995c | 1783 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1784 | e_.info = LMIC.adrAckReq)); |
mluis | 1:d3b7bde3995c | 1785 | setDrTxpow(DRCHG_NOADRACK, decDR((dr_t)LMIC.datarate), KEEP_TXPOW); |
mluis | 1:d3b7bde3995c | 1786 | LMIC.adrAckReq = LINK_CHECK_CONT; |
mluis | 0:62d1edcc13d1 | 1787 | LMIC.opmode |= OP_REJOIN|OP_LINKDEAD; |
mluis | 1:d3b7bde3995c | 1788 | reportEvent(EV_LINK_DEAD); |
mluis | 0:62d1edcc13d1 | 1789 | } |
mluis | 1:d3b7bde3995c | 1790 | // If this falls to zero the NWK did not answer our MCMD_BCNI_REQ commands - try full scan |
mluis | 1:d3b7bde3995c | 1791 | if( LMIC.bcninfoTries > 0 ) { |
mluis | 1:d3b7bde3995c | 1792 | if( (LMIC.opmode & OP_TRACK) != 0 ) { |
mluis | 1:d3b7bde3995c | 1793 | reportEvent(EV_BEACON_FOUND); |
mluis | 1:d3b7bde3995c | 1794 | LMIC.bcninfoTries = 0; |
mluis | 1:d3b7bde3995c | 1795 | } |
mluis | 1:d3b7bde3995c | 1796 | else if( --LMIC.bcninfoTries == 0 ) { |
mluis | 1:d3b7bde3995c | 1797 | startScan(); // NWK did not answer - try scan |
mluis | 1:d3b7bde3995c | 1798 | } |
mluis | 0:62d1edcc13d1 | 1799 | } |
mluis | 1:d3b7bde3995c | 1800 | return 1; |
mluis | 0:62d1edcc13d1 | 1801 | } |
mluis | 0:62d1edcc13d1 | 1802 | if( !decodeFrame() ) { |
mluis | 1:d3b7bde3995c | 1803 | if( (LMIC.txrxFlags & TXRX_DNW1) != 0 ) |
mluis | 1:d3b7bde3995c | 1804 | return 0; |
mluis | 1:d3b7bde3995c | 1805 | goto norx; |
mluis | 0:62d1edcc13d1 | 1806 | } |
mluis | 0:62d1edcc13d1 | 1807 | goto txcomplete; |
mluis | 0:62d1edcc13d1 | 1808 | } |
mluis | 0:62d1edcc13d1 | 1809 | |
mluis | 0:62d1edcc13d1 | 1810 | |
mluis | 0:62d1edcc13d1 | 1811 | static void processBeacon (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1812 | ostime_t lasttx = LMIC.bcninfo.txtime; // save here - decodeBeacon might overwrite |
mluis | 0:62d1edcc13d1 | 1813 | u1_t flags = LMIC.bcninfo.flags; |
mluis | 0:62d1edcc13d1 | 1814 | ev_t ev; |
mluis | 0:62d1edcc13d1 | 1815 | |
mluis | 0:62d1edcc13d1 | 1816 | if( LMIC.dataLen != 0 && decodeBeacon() >= 1 ) { |
mluis | 1:d3b7bde3995c | 1817 | ev = EV_BEACON_TRACKED; |
mluis | 1:d3b7bde3995c | 1818 | if( (flags & (BCN_PARTIAL|BCN_FULL)) == 0 ) { |
mluis | 1:d3b7bde3995c | 1819 | // We don't have a previous beacon to calc some drift - assume |
mluis | 1:d3b7bde3995c | 1820 | // an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm |
mluis | 1:d3b7bde3995c | 1821 | calcBcnRxWindowFromMillis(13,0); |
mluis | 1:d3b7bde3995c | 1822 | goto rev; |
mluis | 1:d3b7bde3995c | 1823 | } |
mluis | 1:d3b7bde3995c | 1824 | // We have a previous BEACON to calculate some drift |
mluis | 1:d3b7bde3995c | 1825 | s2_t drift = BCN_INTV_osticks - (LMIC.bcninfo.txtime - lasttx); |
mluis | 1:d3b7bde3995c | 1826 | if( LMIC.missedBcns > 0 ) { |
mluis | 1:d3b7bde3995c | 1827 | drift = LMIC.drift + (drift - LMIC.drift) / (LMIC.missedBcns+1); |
mluis | 1:d3b7bde3995c | 1828 | } |
mluis | 1:d3b7bde3995c | 1829 | if( (LMIC.bcninfo.flags & BCN_NODRIFT) == 0 ) { |
mluis | 1:d3b7bde3995c | 1830 | s2_t diff = LMIC.drift - drift; |
mluis | 1:d3b7bde3995c | 1831 | if( diff < 0 ) diff = -diff; |
mluis | 1:d3b7bde3995c | 1832 | LMIC.lastDriftDiff = diff; |
mluis | 1:d3b7bde3995c | 1833 | if( LMIC.maxDriftDiff < diff ) |
mluis | 1:d3b7bde3995c | 1834 | LMIC.maxDriftDiff = diff; |
mluis | 1:d3b7bde3995c | 1835 | LMIC.bcninfo.flags &= ~BCN_NODDIFF; |
mluis | 1:d3b7bde3995c | 1836 | } |
mluis | 1:d3b7bde3995c | 1837 | LMIC.drift = drift; |
mluis | 1:d3b7bde3995c | 1838 | LMIC.missedBcns = LMIC.rejoinCnt = 0; |
mluis | 1:d3b7bde3995c | 1839 | LMIC.bcninfo.flags &= ~BCN_NODRIFT; |
mluis | 1:d3b7bde3995c | 1840 | EV(devCond,INFO,(e_.reason = EV::devCond_t::CLOCK_DRIFT, |
mluis | 1:d3b7bde3995c | 1841 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1842 | e_.info = drift, |
mluis | 1:d3b7bde3995c | 1843 | e_.info2 = /*occasion BEACON*/0)); |
mluis | 1:d3b7bde3995c | 1844 | ASSERT((LMIC.bcninfo.flags & (BCN_PARTIAL|BCN_FULL)) != 0); |
mluis | 0:62d1edcc13d1 | 1845 | } else { |
mluis | 1:d3b7bde3995c | 1846 | ev = EV_BEACON_MISSED; |
mluis | 1:d3b7bde3995c | 1847 | LMIC.bcninfo.txtime += BCN_INTV_osticks - LMIC.drift; |
mluis | 1:d3b7bde3995c | 1848 | LMIC.bcninfo.time += BCN_INTV_sec; |
mluis | 1:d3b7bde3995c | 1849 | LMIC.missedBcns++; |
mluis | 1:d3b7bde3995c | 1850 | // Delay any possible TX after surmised beacon - it's there although we missed it |
mluis | 1:d3b7bde3995c | 1851 | txDelay(LMIC.bcninfo.txtime + BCN_RESERVE_osticks, 4); |
mluis | 1:d3b7bde3995c | 1852 | if( LMIC.missedBcns > MAX_MISSED_BCNS ) |
mluis | 1:d3b7bde3995c | 1853 | LMIC.opmode |= OP_REJOIN; // try if we can roam to another network |
mluis | 1:d3b7bde3995c | 1854 | if( LMIC.bcnRxsyms > MAX_RXSYMS ) { |
mluis | 1:d3b7bde3995c | 1855 | LMIC.opmode &= ~(OP_TRACK|OP_PINGABLE|OP_PINGINI|OP_REJOIN); |
mluis | 1:d3b7bde3995c | 1856 | reportEvent(EV_LOST_TSYNC); |
mluis | 1:d3b7bde3995c | 1857 | return; |
mluis | 1:d3b7bde3995c | 1858 | } |
mluis | 0:62d1edcc13d1 | 1859 | } |
mluis | 0:62d1edcc13d1 | 1860 | LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - calcRxWindow(0,DR_BCN); |
mluis | 0:62d1edcc13d1 | 1861 | LMIC.bcnRxsyms = LMIC.rxsyms; |
mluis | 0:62d1edcc13d1 | 1862 | rev: |
mluis | 1:d3b7bde3995c | 1863 | #if CFG_us915 |
mluis | 1:d3b7bde3995c | 1864 | LMIC.bcnChnl = (LMIC.bcnChnl+1) & 7; |
mluis | 1:d3b7bde3995c | 1865 | #endif |
mluis | 0:62d1edcc13d1 | 1866 | if( (LMIC.opmode & OP_PINGINI) != 0 ) |
mluis | 1:d3b7bde3995c | 1867 | rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer! |
mluis | 0:62d1edcc13d1 | 1868 | reportEvent(ev); |
mluis | 0:62d1edcc13d1 | 1869 | } |
mluis | 0:62d1edcc13d1 | 1870 | |
mluis | 0:62d1edcc13d1 | 1871 | |
mluis | 0:62d1edcc13d1 | 1872 | static void startRxBcn (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1873 | LMIC.osjob.func = FUNC_ADDR(processBeacon); |
mluis | 0:62d1edcc13d1 | 1874 | os_radio(RADIO_RX); |
mluis | 0:62d1edcc13d1 | 1875 | } |
mluis | 0:62d1edcc13d1 | 1876 | |
mluis | 0:62d1edcc13d1 | 1877 | |
mluis | 0:62d1edcc13d1 | 1878 | static void startRxPing (xref2osjob_t osjob) { |
mluis | 0:62d1edcc13d1 | 1879 | LMIC.osjob.func = FUNC_ADDR(processPingRx); |
mluis | 0:62d1edcc13d1 | 1880 | os_radio(RADIO_RX); |
mluis | 0:62d1edcc13d1 | 1881 | } |
mluis | 0:62d1edcc13d1 | 1882 | |
mluis | 0:62d1edcc13d1 | 1883 | |
mluis | 0:62d1edcc13d1 | 1884 | // Decide what to do next for the MAC layer of a device |
mluis | 0:62d1edcc13d1 | 1885 | static void engineUpdate (void) { |
mluis | 0:62d1edcc13d1 | 1886 | // Check for ongoing state: scan or TX/RX transaction |
mluis | 0:62d1edcc13d1 | 1887 | if( (LMIC.opmode & (OP_SCAN|OP_TXRXPEND|OP_SHUTDOWN)) != 0 ) |
mluis | 1:d3b7bde3995c | 1888 | return; |
mluis | 0:62d1edcc13d1 | 1889 | |
mluis | 0:62d1edcc13d1 | 1890 | if( LMIC.devaddr == 0 && (LMIC.opmode & OP_JOINING) == 0 ) { |
mluis | 1:d3b7bde3995c | 1891 | LMIC_startJoining(); |
mluis | 1:d3b7bde3995c | 1892 | return; |
mluis | 0:62d1edcc13d1 | 1893 | } |
mluis | 0:62d1edcc13d1 | 1894 | |
mluis | 0:62d1edcc13d1 | 1895 | ostime_t now = os_getTime(); |
mluis | 0:62d1edcc13d1 | 1896 | ostime_t rxtime = 0; |
mluis | 0:62d1edcc13d1 | 1897 | ostime_t txbeg = 0; |
mluis | 0:62d1edcc13d1 | 1898 | |
mluis | 0:62d1edcc13d1 | 1899 | if( (LMIC.opmode & OP_TRACK) != 0 ) { |
mluis | 1:d3b7bde3995c | 1900 | // We are tracking a beacon |
mluis | 1:d3b7bde3995c | 1901 | ASSERT( now + RX_RAMPUP - LMIC.bcnRxtime <= 0 ); |
mluis | 1:d3b7bde3995c | 1902 | rxtime = LMIC.bcnRxtime - RX_RAMPUP; |
mluis | 0:62d1edcc13d1 | 1903 | } |
mluis | 0:62d1edcc13d1 | 1904 | |
mluis | 0:62d1edcc13d1 | 1905 | if( (LMIC.opmode & (OP_JOINING|OP_REJOIN|OP_TXDATA|OP_POLL)) != 0 ) { |
mluis | 1:d3b7bde3995c | 1906 | // Need to TX some data... |
mluis | 1:d3b7bde3995c | 1907 | // Assuming txChnl points to channel which first becomes available again. |
mluis | 1:d3b7bde3995c | 1908 | bit_t jacc = ((LMIC.opmode & (OP_JOINING|OP_REJOIN)) != 0 ? 1 : 0); |
mluis | 1:d3b7bde3995c | 1909 | // Find next suitable channel and return availability time |
mluis | 1:d3b7bde3995c | 1910 | if( (LMIC.opmode & OP_NEXTCHNL) != 0 ) { |
mluis | 1:d3b7bde3995c | 1911 | txbeg = LMIC.txend = nextTx(now); |
mluis | 1:d3b7bde3995c | 1912 | LMIC.opmode &= ~OP_NEXTCHNL; |
mluis | 0:62d1edcc13d1 | 1913 | } else { |
mluis | 1:d3b7bde3995c | 1914 | txbeg = LMIC.txend; |
mluis | 1:d3b7bde3995c | 1915 | } |
mluis | 1:d3b7bde3995c | 1916 | // Delayed TX or waiting for duty cycle? |
mluis | 1:d3b7bde3995c | 1917 | if( (LMIC.globalDutyRate != 0 || (LMIC.opmode & OP_RNDTX) != 0) && (txbeg - LMIC.globalDutyAvail) < 0 ) |
mluis | 1:d3b7bde3995c | 1918 | txbeg = LMIC.globalDutyAvail; |
mluis | 1:d3b7bde3995c | 1919 | // If we're tracking a beacon... |
mluis | 1:d3b7bde3995c | 1920 | // then make sure TX-RX transaction is complete before beacon |
mluis | 1:d3b7bde3995c | 1921 | if( (LMIC.opmode & OP_TRACK) != 0 && |
mluis | 1:d3b7bde3995c | 1922 | txbeg + (jacc ? JOIN_GUARD_osticks : TXRX_GUARD_osticks) - rxtime > 0 ) { |
mluis | 1:d3b7bde3995c | 1923 | // Not enough time to complete TX-RX before beacon - postpone after beacon. |
mluis | 1:d3b7bde3995c | 1924 | // In order to avoid clustering of postponed TX right after beacon randomize start! |
mluis | 1:d3b7bde3995c | 1925 | txDelay(rxtime + BCN_RESERVE_osticks, 16); |
mluis | 1:d3b7bde3995c | 1926 | txbeg = 0; |
mluis | 1:d3b7bde3995c | 1927 | goto checkrx; |
mluis | 0:62d1edcc13d1 | 1928 | } |
mluis | 1:d3b7bde3995c | 1929 | // Earliest possible time vs overhead to setup radio |
mluis | 1:d3b7bde3995c | 1930 | if( txbeg - (now + TX_RAMPUP) < 0 ) { |
mluis | 1:d3b7bde3995c | 1931 | // We could send right now! |
mluis | 1:d3b7bde3995c | 1932 | dr_t txdr = (dr_t)LMIC.datarate; |
mluis | 1:d3b7bde3995c | 1933 | if( jacc ) { |
mluis | 1:d3b7bde3995c | 1934 | u1_t ftype; |
mluis | 1:d3b7bde3995c | 1935 | if( (LMIC.opmode & OP_REJOIN) != 0 ) { |
mluis | 1:d3b7bde3995c | 1936 | txdr = lowerDR(txdr, LMIC.rejoinCnt); |
mluis | 1:d3b7bde3995c | 1937 | ftype = HDR_FTYPE_REJOIN; |
mluis | 1:d3b7bde3995c | 1938 | } else { |
mluis | 1:d3b7bde3995c | 1939 | ftype = HDR_FTYPE_JREQ; |
mluis | 1:d3b7bde3995c | 1940 | } |
mluis | 1:d3b7bde3995c | 1941 | buildJoinRequest(ftype); |
mluis | 1:d3b7bde3995c | 1942 | LMIC.osjob.func = FUNC_ADDR(jreqDone); |
mluis | 1:d3b7bde3995c | 1943 | } else { |
mluis | 1:d3b7bde3995c | 1944 | if( LMIC.seqnoDn >= 0xFFFFFF80 ) { |
mluis | 1:d3b7bde3995c | 1945 | // Imminent roll over - proactively reset MAC |
mluis | 1:d3b7bde3995c | 1946 | EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER, |
mluis | 1:d3b7bde3995c | 1947 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1948 | e_.info = LMIC.seqnoDn, |
mluis | 1:d3b7bde3995c | 1949 | e_.info2 = 0)); |
mluis | 1:d3b7bde3995c | 1950 | // Device has to react! NWK will not roll over and just stop sending. |
mluis | 1:d3b7bde3995c | 1951 | // Thus, we have N frames to detect a possible lock up. |
mluis | 1:d3b7bde3995c | 1952 | reset: |
mluis | 1:d3b7bde3995c | 1953 | os_setCallback(&LMIC.osjob, FUNC_ADDR(runReset)); |
mluis | 1:d3b7bde3995c | 1954 | return; |
mluis | 1:d3b7bde3995c | 1955 | } |
mluis | 1:d3b7bde3995c | 1956 | if( (LMIC.txCnt==0 && LMIC.seqnoUp == 0xFFFFFFFF) ) { |
mluis | 1:d3b7bde3995c | 1957 | // Roll over of up seq counter |
mluis | 1:d3b7bde3995c | 1958 | EV(specCond, ERR, (e_.reason = EV::specCond_t::UPSEQNO_ROLL_OVER, |
mluis | 1:d3b7bde3995c | 1959 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 1960 | e_.info2 = LMIC.seqnoUp)); |
mluis | 1:d3b7bde3995c | 1961 | // Do not run RESET event callback from here! |
mluis | 1:d3b7bde3995c | 1962 | // App code might do some stuff after send unaware of RESET. |
mluis | 1:d3b7bde3995c | 1963 | goto reset; |
mluis | 1:d3b7bde3995c | 1964 | } |
mluis | 1:d3b7bde3995c | 1965 | buildDataFrame(); |
mluis | 1:d3b7bde3995c | 1966 | LMIC.osjob.func = FUNC_ADDR(updataDone); |
mluis | 1:d3b7bde3995c | 1967 | } |
mluis | 1:d3b7bde3995c | 1968 | LMIC.rps = setCr(updr2rps(txdr), (cr_t)LMIC.errcr); |
mluis | 1:d3b7bde3995c | 1969 | LMIC.dndr = txdr; // carry TX datarate (can be != LMIC.datarate) over to txDone/setupRx1 |
mluis | 1:d3b7bde3995c | 1970 | LMIC.opmode = (LMIC.opmode & ~(OP_POLL|OP_RNDTX)) | OP_TXRXPEND | OP_NEXTCHNL; |
mluis | 1:d3b7bde3995c | 1971 | updateTx(txbeg); |
mluis | 1:d3b7bde3995c | 1972 | os_radio(RADIO_TX); |
mluis | 0:62d1edcc13d1 | 1973 | return; |
mluis | 0:62d1edcc13d1 | 1974 | } |
mluis | 1:d3b7bde3995c | 1975 | // Cannot yet TX |
mluis | 1:d3b7bde3995c | 1976 | if( (LMIC.opmode & OP_TRACK) == 0 ) |
mluis | 1:d3b7bde3995c | 1977 | goto txdelay; // We don't track the beacon - nothing else to do - so wait for the time to TX |
mluis | 1:d3b7bde3995c | 1978 | // Consider RX tasks |
mluis | 1:d3b7bde3995c | 1979 | if( txbeg == 0 ) // zero indicates no TX pending |
mluis | 1:d3b7bde3995c | 1980 | txbeg += 1; // TX delayed by one tick (insignificant amount of time) |
mluis | 0:62d1edcc13d1 | 1981 | } else { |
mluis | 1:d3b7bde3995c | 1982 | // No TX pending - no scheduled RX |
mluis | 1:d3b7bde3995c | 1983 | if( (LMIC.opmode & OP_TRACK) == 0 ) |
mluis | 1:d3b7bde3995c | 1984 | return; |
mluis | 0:62d1edcc13d1 | 1985 | } |
mluis | 0:62d1edcc13d1 | 1986 | |
mluis | 0:62d1edcc13d1 | 1987 | // Are we pingable? |
mluis | 0:62d1edcc13d1 | 1988 | checkrx: |
mluis | 0:62d1edcc13d1 | 1989 | if( (LMIC.opmode & OP_PINGINI) != 0 ) { |
mluis | 1:d3b7bde3995c | 1990 | // One more RX slot in this beacon period? |
mluis | 1:d3b7bde3995c | 1991 | if( rxschedNext(&LMIC.ping, now+RX_RAMPUP) ) { |
mluis | 1:d3b7bde3995c | 1992 | if( txbeg != 0 && (txbeg - LMIC.ping.rxtime) < 0 ) |
mluis | 1:d3b7bde3995c | 1993 | goto txdelay; |
mluis | 1:d3b7bde3995c | 1994 | LMIC.rxsyms = LMIC.ping.rxsyms; |
mluis | 1:d3b7bde3995c | 1995 | LMIC.rxtime = LMIC.ping.rxtime; |
mluis | 1:d3b7bde3995c | 1996 | LMIC.freq = LMIC.ping.freq; |
mluis | 1:d3b7bde3995c | 1997 | LMIC.rps = dndr2rps(LMIC.ping.dr); |
mluis | 1:d3b7bde3995c | 1998 | LMIC.dataLen = 0; |
mluis | 1:d3b7bde3995c | 1999 | ASSERT(LMIC.rxtime - now+RX_RAMPUP >= 0 ); |
mluis | 1:d3b7bde3995c | 2000 | os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, FUNC_ADDR(startRxPing)); |
mluis | 1:d3b7bde3995c | 2001 | return; |
mluis | 1:d3b7bde3995c | 2002 | } |
mluis | 1:d3b7bde3995c | 2003 | // no - just wait for the beacon |
mluis | 0:62d1edcc13d1 | 2004 | } |
mluis | 0:62d1edcc13d1 | 2005 | |
mluis | 0:62d1edcc13d1 | 2006 | if( txbeg != 0 && (txbeg - rxtime) < 0 ) |
mluis | 1:d3b7bde3995c | 2007 | goto txdelay; |
mluis | 0:62d1edcc13d1 | 2008 | |
mluis | 0:62d1edcc13d1 | 2009 | setBcnRxParams(); |
mluis | 0:62d1edcc13d1 | 2010 | LMIC.rxsyms = LMIC.bcnRxsyms; |
mluis | 0:62d1edcc13d1 | 2011 | LMIC.rxtime = LMIC.bcnRxtime; |
mluis | 0:62d1edcc13d1 | 2012 | if( now - rxtime >= 0 ) { |
mluis | 1:d3b7bde3995c | 2013 | LMIC.osjob.func = FUNC_ADDR(processBeacon); |
mluis | 1:d3b7bde3995c | 2014 | os_radio(RADIO_RX); |
mluis | 1:d3b7bde3995c | 2015 | return; |
mluis | 0:62d1edcc13d1 | 2016 | } |
mluis | 0:62d1edcc13d1 | 2017 | os_setTimedCallback(&LMIC.osjob, rxtime, FUNC_ADDR(startRxBcn)); |
mluis | 0:62d1edcc13d1 | 2018 | return; |
mluis | 0:62d1edcc13d1 | 2019 | |
mluis | 0:62d1edcc13d1 | 2020 | txdelay: |
mluis | 0:62d1edcc13d1 | 2021 | EV(devCond, INFO, (e_.reason = EV::devCond_t::TX_DELAY, |
mluis | 1:d3b7bde3995c | 2022 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 2023 | e_.info = osticks2ms(txbeg-now), |
mluis | 1:d3b7bde3995c | 2024 | e_.info2 = LMIC.seqnoUp-1)); |
mluis | 0:62d1edcc13d1 | 2025 | os_setTimedCallback(&LMIC.osjob, txbeg-TX_RAMPUP, FUNC_ADDR(runEngineUpdate)); |
mluis | 0:62d1edcc13d1 | 2026 | } |
mluis | 0:62d1edcc13d1 | 2027 | |
mluis | 0:62d1edcc13d1 | 2028 | |
mluis | 0:62d1edcc13d1 | 2029 | void LMIC_setAdrMode (bit_t enabled) { |
mluis | 0:62d1edcc13d1 | 2030 | LMIC.adrEnabled = enabled ? FCT_ADREN : 0; |
mluis | 0:62d1edcc13d1 | 2031 | } |
mluis | 0:62d1edcc13d1 | 2032 | |
mluis | 0:62d1edcc13d1 | 2033 | |
mluis | 0:62d1edcc13d1 | 2034 | // Should we have/need an ext. API like this? |
mluis | 0:62d1edcc13d1 | 2035 | void LMIC_setDrTxpow (dr_t dr, s1_t txpow) { |
mluis | 0:62d1edcc13d1 | 2036 | setDrTxpow(DRCHG_SET, dr, txpow); |
mluis | 0:62d1edcc13d1 | 2037 | } |
mluis | 0:62d1edcc13d1 | 2038 | |
mluis | 0:62d1edcc13d1 | 2039 | |
mluis | 0:62d1edcc13d1 | 2040 | void LMIC_shutdown (void) { |
mluis | 0:62d1edcc13d1 | 2041 | os_clearCallback(&LMIC.osjob); |
mluis | 0:62d1edcc13d1 | 2042 | os_radio(RADIO_RST); |
mluis | 0:62d1edcc13d1 | 2043 | LMIC.opmode |= OP_SHUTDOWN; |
mluis | 0:62d1edcc13d1 | 2044 | } |
mluis | 0:62d1edcc13d1 | 2045 | |
mluis | 0:62d1edcc13d1 | 2046 | |
mluis | 0:62d1edcc13d1 | 2047 | void LMIC_reset (void) { |
mluis | 0:62d1edcc13d1 | 2048 | EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV, |
mluis | 1:d3b7bde3995c | 2049 | e_.eui = MAIN::CDEV->getEui(), |
mluis | 1:d3b7bde3995c | 2050 | e_.info = EV_RESET)); |
mluis | 0:62d1edcc13d1 | 2051 | os_radio(RADIO_RST); |
mluis | 0:62d1edcc13d1 | 2052 | os_clearCallback(&LMIC.osjob); |
mluis | 0:62d1edcc13d1 | 2053 | |
mluis | 0:62d1edcc13d1 | 2054 | os_clearMem((xref2u1_t)&LMIC,SIZEOFEXPR(LMIC)); |
mluis | 1:d3b7bde3995c | 2055 | LMIC.devaddr = 0; |
mluis | 1:d3b7bde3995c | 2056 | LMIC.devNonce = os_getRndU2(); |
mluis | 1:d3b7bde3995c | 2057 | LMIC.opmode = OP_NONE; |
mluis | 1:d3b7bde3995c | 2058 | LMIC.errcr = CR_4_5; |
mluis | 1:d3b7bde3995c | 2059 | LMIC.adrEnabled = FCT_ADREN; |
mluis | 1:d3b7bde3995c | 2060 | LMIC.dn2Dr = DR_DNW2; // we need this for 2nd DN window of join accept |
mluis | 1:d3b7bde3995c | 2061 | LMIC.dn2Freq = FREQ_DNW2; // ditto |
mluis | 1:d3b7bde3995c | 2062 | LMIC.ping.freq = FREQ_PING; // defaults for ping |
mluis | 1:d3b7bde3995c | 2063 | LMIC.ping.dr = DR_PING; // ditto |
mluis | 1:d3b7bde3995c | 2064 | LMIC.ping.intvExp = 0xFF; |
mluis | 1:d3b7bde3995c | 2065 | #if defined(CFG_us915) |
mluis | 0:62d1edcc13d1 | 2066 | initDefaultChannels(); |
mluis | 0:62d1edcc13d1 | 2067 | #endif |
mluis | 1:d3b7bde3995c | 2068 | DO_DEVDB(LMIC.devaddr, devaddr); |
mluis | 1:d3b7bde3995c | 2069 | DO_DEVDB(LMIC.devNonce, devNonce); |
mluis | 1:d3b7bde3995c | 2070 | DO_DEVDB(LMIC.dn2Dr, dn2Dr); |
mluis | 1:d3b7bde3995c | 2071 | DO_DEVDB(LMIC.dn2Freq, dn2Freq); |
mluis | 1:d3b7bde3995c | 2072 | DO_DEVDB(LMIC.ping.freq, pingFreq); |
mluis | 1:d3b7bde3995c | 2073 | DO_DEVDB(LMIC.ping.dr, pingDr); |
mluis | 1:d3b7bde3995c | 2074 | DO_DEVDB(LMIC.ping.intvExp, pingIntvExp); |
mluis | 0:62d1edcc13d1 | 2075 | } |
mluis | 0:62d1edcc13d1 | 2076 | |
mluis | 0:62d1edcc13d1 | 2077 | |
mluis | 0:62d1edcc13d1 | 2078 | void LMIC_init (void) { |
mluis | 0:62d1edcc13d1 | 2079 | LMIC.opmode = OP_SHUTDOWN; |
mluis | 0:62d1edcc13d1 | 2080 | } |
mluis | 0:62d1edcc13d1 | 2081 | |
mluis | 0:62d1edcc13d1 | 2082 | |
mluis | 0:62d1edcc13d1 | 2083 | void LMIC_clrTxData (void) { |
mluis | 0:62d1edcc13d1 | 2084 | LMIC.opmode &= ~(OP_TXDATA|OP_TXRXPEND|OP_POLL); |
mluis | 0:62d1edcc13d1 | 2085 | LMIC.pendTxLen = 0; |
mluis | 0:62d1edcc13d1 | 2086 | if( (LMIC.opmode & (OP_JOINING|OP_SCAN)) != 0 ) // do not interfere with JOINING |
mluis | 1:d3b7bde3995c | 2087 | return; |
mluis | 0:62d1edcc13d1 | 2088 | os_clearCallback(&LMIC.osjob); |
mluis | 0:62d1edcc13d1 | 2089 | os_radio(RADIO_RST); |
mluis | 0:62d1edcc13d1 | 2090 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 2091 | } |
mluis | 0:62d1edcc13d1 | 2092 | |
mluis | 0:62d1edcc13d1 | 2093 | |
mluis | 0:62d1edcc13d1 | 2094 | void LMIC_setTxData (void) { |
mluis | 0:62d1edcc13d1 | 2095 | LMIC.opmode |= OP_TXDATA; |
mluis | 0:62d1edcc13d1 | 2096 | if( (LMIC.opmode & OP_JOINING) == 0 ) |
mluis | 1:d3b7bde3995c | 2097 | LMIC.txCnt = 0; // cancel any ongoing TX/RX retries |
mluis | 0:62d1edcc13d1 | 2098 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 2099 | } |
mluis | 0:62d1edcc13d1 | 2100 | |
mluis | 0:62d1edcc13d1 | 2101 | |
mluis | 0:62d1edcc13d1 | 2102 | // |
mluis | 0:62d1edcc13d1 | 2103 | int LMIC_setTxData2 (u1_t port, xref2u1_t data, u1_t dlen, u1_t confirmed) { |
mluis | 0:62d1edcc13d1 | 2104 | if( dlen > SIZEOFEXPR(LMIC.pendTxData) ) |
mluis | 1:d3b7bde3995c | 2105 | return -2; |
mluis | 0:62d1edcc13d1 | 2106 | if( data != (xref2u1_t)0 ) |
mluis | 1:d3b7bde3995c | 2107 | os_copyMem(LMIC.pendTxData, data, dlen); |
mluis | 0:62d1edcc13d1 | 2108 | LMIC.pendTxConf = confirmed; |
mluis | 0:62d1edcc13d1 | 2109 | LMIC.pendTxPort = port; |
mluis | 0:62d1edcc13d1 | 2110 | LMIC.pendTxLen = dlen; |
mluis | 0:62d1edcc13d1 | 2111 | LMIC_setTxData(); |
mluis | 0:62d1edcc13d1 | 2112 | return 0; |
mluis | 0:62d1edcc13d1 | 2113 | } |
mluis | 0:62d1edcc13d1 | 2114 | |
mluis | 0:62d1edcc13d1 | 2115 | |
mluis | 0:62d1edcc13d1 | 2116 | // Send a payload-less message to signal device is alive |
mluis | 0:62d1edcc13d1 | 2117 | void LMIC_sendAlive (void) { |
mluis | 0:62d1edcc13d1 | 2118 | LMIC.opmode |= OP_POLL; |
mluis | 0:62d1edcc13d1 | 2119 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 2120 | } |
mluis | 0:62d1edcc13d1 | 2121 | |
mluis | 0:62d1edcc13d1 | 2122 | |
mluis | 0:62d1edcc13d1 | 2123 | // Check if other networks are around. |
mluis | 0:62d1edcc13d1 | 2124 | void LMIC_tryRejoin (void) { |
mluis | 0:62d1edcc13d1 | 2125 | LMIC.opmode |= OP_REJOIN; |
mluis | 0:62d1edcc13d1 | 2126 | engineUpdate(); |
mluis | 0:62d1edcc13d1 | 2127 | } |
mluis | 0:62d1edcc13d1 | 2128 | |
mluis | 1:d3b7bde3995c | 2129 | //! \brief Setup given session keys |
mluis | 1:d3b7bde3995c | 2130 | //! and put the MAC in a state as if |
mluis | 1:d3b7bde3995c | 2131 | //! a join request/accept would have negotiated just these keys. |
mluis | 1:d3b7bde3995c | 2132 | //! It is crucial that the combinations `devaddr/nwkkey` and `devaddr/artkey` |
mluis | 1:d3b7bde3995c | 2133 | //! are unique within the network identified by `netid`. |
mluis | 1:d3b7bde3995c | 2134 | //! NOTE: on Harvard architectures when session keys are in flash: |
mluis | 1:d3b7bde3995c | 2135 | //! Caller has to fill in LMIC.{nwk,art}Key before and pass {nwk,art}Key are NULL |
mluis | 1:d3b7bde3995c | 2136 | //! \param netid a 24 bit number describing the network id this device is using |
mluis | 1:d3b7bde3995c | 2137 | //! \param devaddr the 32 bit session address of the device. It is strongly recommended |
mluis | 1:d3b7bde3995c | 2138 | //! to ensure that different devices use different numbers with high probability. |
mluis | 1:d3b7bde3995c | 2139 | //! \param nwkKey the 16 byte network session key used for message integrity. |
mluis | 1:d3b7bde3995c | 2140 | //! If NULL the caller has copied the key into `LMIC.nwkKey` before. |
mluis | 1:d3b7bde3995c | 2141 | //! \param artKey the 16 byte application router session key used for message confidentiality. |
mluis | 1:d3b7bde3995c | 2142 | //! If NULL the caller has copied the key into `LMIC.artKey` before. |
mluis | 1:d3b7bde3995c | 2143 | void LMIC_setSession (u4_t netid, devaddr_t devaddr, xref2u1_t nwkKey, xref2u1_t artKey) { |
mluis | 0:62d1edcc13d1 | 2144 | LMIC.netid = netid; |
mluis | 0:62d1edcc13d1 | 2145 | LMIC.devaddr = devaddr; |
mluis | 1:d3b7bde3995c | 2146 | if( nwkKey != (xref2u1_t)0 ) |
mluis | 1:d3b7bde3995c | 2147 | os_copyMem(LMIC.nwkKey, nwkKey, 16); |
mluis | 1:d3b7bde3995c | 2148 | if( artKey != (xref2u1_t)0 ) |
mluis | 1:d3b7bde3995c | 2149 | os_copyMem(LMIC.artKey, artKey, 16); |
mluis | 0:62d1edcc13d1 | 2150 | |
mluis | 1:d3b7bde3995c | 2151 | #if defined(CFG_eu868) |
mluis | 0:62d1edcc13d1 | 2152 | initDefaultChannels(0); |
mluis | 0:62d1edcc13d1 | 2153 | #endif |
mluis | 1:d3b7bde3995c | 2154 | |
mluis | 1:d3b7bde3995c | 2155 | LMIC.opmode &= ~(OP_JOINING|OP_TRACK|OP_REJOIN|OP_TXRXPEND|OP_PINGINI); |
mluis | 1:d3b7bde3995c | 2156 | LMIC.opmode |= OP_NEXTCHNL; |
mluis | 0:62d1edcc13d1 | 2157 | stateJustJoined(); |
mluis | 0:62d1edcc13d1 | 2158 | } |
mluis | 1:d3b7bde3995c | 2159 | |
mluis | 1:d3b7bde3995c | 2160 | // Enable/disable link check validation. |
mluis | 1:d3b7bde3995c | 2161 | // LMIC sets the ADRACKREQ bit in UP frames if there were no DN frames |
mluis | 1:d3b7bde3995c | 2162 | // for a while. It expects the network to provide a DN message to prove |
mluis | 1:d3b7bde3995c | 2163 | // connectivity with a span of UP frames. If this no such prove is coming |
mluis | 1:d3b7bde3995c | 2164 | // then the datarate is lowered and a LINK_DEAD event is generated. |
mluis | 1:d3b7bde3995c | 2165 | // This mode can be disabled and no connectivity prove (ADRACKREQ) is requested |
mluis | 1:d3b7bde3995c | 2166 | // nor is the datarate changed. |
mluis | 1:d3b7bde3995c | 2167 | // This must be called only if a session is established (e.g. after EV_JOINED) |
mluis | 1:d3b7bde3995c | 2168 | void LMIC_setLinkCheckMode (bit_t enabled) { |
mluis | 1:d3b7bde3995c | 2169 | LMIC.adrChanged = 0; |
mluis | 1:d3b7bde3995c | 2170 | LMIC.adrAckReq = enabled ? LINK_CHECK_INIT : LINK_CHECK_OFF; |
mluis | 1:d3b7bde3995c | 2171 | } |
mluis | 1:d3b7bde3995c | 2172 | |
mluis | 1:d3b7bde3995c | 2173 |