Goran Mahovlic / STM32F103c8t6-LoRaWAN-lmic

STM32F103c8t6 LoRaWAN lmic

Dependents:   LoRaWAN-lmic-app_copy

Fork of LMiC by Semtech

lmic.cpp@5:30dcb702226b, 2017-04-19 (annotated)

Committer:
mistery
Date:
Wed Apr 19 07:57:22 2017 +0000
Revision:
5:30dcb702226b
Parent:
4:85b2b647cb64 
LoRaWAN

Who changed what in which revision?

UserRevisionLine numberNew 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)
dudmuck 2:974cafbfb159 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
dudmuck 2:974cafbfb159 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);
dudmuck 2:974cafbfb159 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
dudmuck 2:974cafbfb159 504 if( pow != KEEP_TXPOW ) {
dudmuck 2:974cafbfb159 505 LMIC.adrTxPow = pow;
dudmuck 2:974cafbfb159 506 if (pow < LMIC.txpow_limit)
dudmuck 2:974cafbfb159 507 LMIC.txpow = pow;
dudmuck 2:974cafbfb159 508 }
mluis 1:d3b7bde3995c 509 if( LMIC.datarate != dr ) {
mluis 1:d3b7bde3995c 510 LMIC.datarate = dr;
mluis 1:d3b7bde3995c 511 DO_DEVDB(LMIC.datarate,datarate);
mluis 1:d3b7bde3995c 512 LMIC.opmode |= OP_NEXTCHNL;
mluis 1:d3b7bde3995c 513 }
mluis 0:62d1edcc13d1 514 }
mluis 0:62d1edcc13d1 515
mluis 0:62d1edcc13d1 516
mluis 0:62d1edcc13d1 517 void LMIC_stopPingable (void) {
mluis 0:62d1edcc13d1 518 LMIC.opmode &= ~(OP_PINGABLE|OP_PINGINI);
mluis 0:62d1edcc13d1 519 }
mluis 0:62d1edcc13d1 520
mluis 0:62d1edcc13d1 521
mluis 0:62d1edcc13d1 522 void LMIC_setPingable (u1_t intvExp) {
mluis 0:62d1edcc13d1 523 // Change setting
mluis 0:62d1edcc13d1 524 LMIC.ping.intvExp = (intvExp & 0x7);
mluis 0:62d1edcc13d1 525 LMIC.opmode |= OP_PINGABLE;
mluis 0:62d1edcc13d1 526 // App may call LMIC_enableTracking() explicitely before
mluis 0:62d1edcc13d1 527 // Otherwise tracking is implicitly enabled here
mluis 0:62d1edcc13d1 528 if( (LMIC.opmode & (OP_TRACK|OP_SCAN)) == 0 && LMIC.bcninfoTries == 0 )
mluis 1:d3b7bde3995c 529 LMIC_enableTracking(0);
mluis 0:62d1edcc13d1 530 }
mluis 0:62d1edcc13d1 531
mluis 0:62d1edcc13d1 532
mluis 1:d3b7bde3995c 533 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 534 // ================================================================================
mluis 0:62d1edcc13d1 535 //
mluis 0:62d1edcc13d1 536 // BEG: EU868 related stuff
mluis 0:62d1edcc13d1 537 //
mistery 5:30dcb702226b 538 //enum { NUM_DEFAULT_CHANNELS=6 };
mistery 5:30dcb702226b 539 enum { NUM_DEFAULT_CHANNELS=1 };
mluis 0:62d1edcc13d1 540 static const u4_t iniChannelFreq[12] = {
mistery 5:30dcb702226b 541 //static const u4_t iniChannelFreq[2] = {
mluis 0:62d1edcc13d1 542 // Join frequencies and duty cycle limit (0.1%)
mistery 5:30dcb702226b 543
mluis 1:d3b7bde3995c 544 EU868_F1|BAND_MILLI, EU868_J4|BAND_MILLI,
mluis 1:d3b7bde3995c 545 EU868_F2|BAND_MILLI, EU868_J5|BAND_MILLI,
mluis 1:d3b7bde3995c 546 EU868_F3|BAND_MILLI, EU868_J6|BAND_MILLI,
mluis 0:62d1edcc13d1 547 // Default operational frequencies
mluis 0:62d1edcc13d1 548 EU868_F1|BAND_CENTI, EU868_F2|BAND_CENTI, EU868_F3|BAND_CENTI,
mluis 0:62d1edcc13d1 549 EU868_F4|BAND_MILLI, EU868_F5|BAND_MILLI, EU868_F6|BAND_DECI
mistery 5:30dcb702226b 550 /*
mistery 5:30dcb702226b 551 EU868_F1|BAND_MILLI,
mistery 5:30dcb702226b 552 // Default operational frequencies
mistery 5:30dcb702226b 553 EU868_F1|BAND_CENTI
mistery 5:30dcb702226b 554 */
mluis 0:62d1edcc13d1 555 };
mluis 0:62d1edcc13d1 556
mluis 0:62d1edcc13d1 557 static void initDefaultChannels (bit_t join) {
mluis 1:d3b7bde3995c 558 os_clearMem(&LMIC.channelFreq, sizeof(LMIC.channelFreq));
mluis 1:d3b7bde3995c 559 os_clearMem(&LMIC.channelDrMap, sizeof(LMIC.channelDrMap));
mluis 1:d3b7bde3995c 560 os_clearMem(&LMIC.bands, sizeof(LMIC.bands));
mluis 1:d3b7bde3995c 561
dudmuck 2:974cafbfb159 562 LMIC.channelMap = 0x3;
mluis 0:62d1edcc13d1 563 u1_t su = join ? 0 : 6;
mluis 0:62d1edcc13d1 564 for( u1_t fu=0; fu<6; fu++,su++ ) {
mluis 1:d3b7bde3995c 565 LMIC.channelFreq[fu] = iniChannelFreq[su];
mluis 1:d3b7bde3995c 566 LMIC.channelDrMap[fu] = DR_RANGE_MAP(DR_SF12,DR_SF7);
mluis 0:62d1edcc13d1 567 }
mluis 1:d3b7bde3995c 568 if( !join ) {
mluis 1:d3b7bde3995c 569 LMIC.channelDrMap[5] = DR_RANGE_MAP(DR_SF12,DR_SF7);
mluis 1:d3b7bde3995c 570 LMIC.channelDrMap[1] = DR_RANGE_MAP(DR_SF12,DR_FSK);
mluis 1:d3b7bde3995c 571 }
mluis 0:62d1edcc13d1 572
mluis 1:d3b7bde3995c 573 LMIC.bands[BAND_MILLI].txcap = 1000; // 0.1%
mluis 1:d3b7bde3995c 574 LMIC.bands[BAND_MILLI].txpow = 14;
mluis 1:d3b7bde3995c 575 LMIC.bands[BAND_MILLI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 1:d3b7bde3995c 576 LMIC.bands[BAND_CENTI].txcap = 100; // 1%
mluis 1:d3b7bde3995c 577 LMIC.bands[BAND_CENTI].txpow = 14;
mluis 1:d3b7bde3995c 578 LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 1:d3b7bde3995c 579 LMIC.bands[BAND_DECI ].txcap = 10; // 10%
mluis 1:d3b7bde3995c 580 LMIC.bands[BAND_DECI ].txpow = 27;
mluis 1:d3b7bde3995c 581 LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 0:62d1edcc13d1 582 LMIC.bands[BAND_MILLI].avail =
mluis 0:62d1edcc13d1 583 LMIC.bands[BAND_CENTI].avail =
mluis 0:62d1edcc13d1 584 LMIC.bands[BAND_DECI ].avail = os_getTime();
mluis 0:62d1edcc13d1 585 }
mluis 0:62d1edcc13d1 586
mluis 1:d3b7bde3995c 587 bit_t LMIC_setupBand (u1_t bandidx, s1_t txpow, u2_t txcap) {
mluis 1:d3b7bde3995c 588 if( bandidx > BAND_AUX ) return 0;
mluis 1:d3b7bde3995c 589 band_t* b = &LMIC.bands[bandidx];
mluis 1:d3b7bde3995c 590 b->txpow = txpow;
mluis 1:d3b7bde3995c 591 b->txcap = txcap;
mluis 1:d3b7bde3995c 592 b->avail = os_getTime();
mluis 1:d3b7bde3995c 593 b->lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 1:d3b7bde3995c 594 return 1;
mluis 1:d3b7bde3995c 595 }
mluis 1:d3b7bde3995c 596
mluis 1:d3b7bde3995c 597 bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
mluis 1:d3b7bde3995c 598 if( chidx >= MAX_CHANNELS )
mluis 1:d3b7bde3995c 599 return 0;
mluis 1:d3b7bde3995c 600 if( band == -1 ) {
mluis 1:d3b7bde3995c 601 if( freq >= 869400000 && freq <= 869650000 )
mluis 1:d3b7bde3995c 602 freq |= BAND_DECI; // 10% 27dBm
mluis 1:d3b7bde3995c 603 else if( (freq >= 868000000 && freq <= 868600000) ||
mluis 1:d3b7bde3995c 604 (freq >= 869700000 && freq <= 870000000) )
mluis 1:d3b7bde3995c 605 freq |= BAND_CENTI; // 1% 14dBm
mluis 1:d3b7bde3995c 606 else
mluis 1:d3b7bde3995c 607 freq |= BAND_MILLI; // 0.1% 14dBm
mluis 1:d3b7bde3995c 608 } else {
mluis 1:d3b7bde3995c 609 if( band > BAND_AUX ) return 0;
mluis 1:d3b7bde3995c 610 freq = (freq&~3) | band;
mluis 1:d3b7bde3995c 611 }
mluis 1:d3b7bde3995c 612 LMIC.channelFreq [chidx] = freq;
mluis 1:d3b7bde3995c 613 LMIC.channelDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF12,DR_SF7) : drmap;
mluis 1:d3b7bde3995c 614 LMIC.channelMap |= 1<<chidx; // enabled right away
mluis 1:d3b7bde3995c 615 return 1;
mluis 1:d3b7bde3995c 616 }
mluis 1:d3b7bde3995c 617
mluis 1:d3b7bde3995c 618 void LMIC_disableChannel (u1_t channel) {
mluis 1:d3b7bde3995c 619 LMIC.channelFreq[channel] = 0;
mluis 1:d3b7bde3995c 620 LMIC.channelDrMap[channel] = 0;
mluis 1:d3b7bde3995c 621 LMIC.channelMap &= ~(1<<channel);
mluis 1:d3b7bde3995c 622 }
mluis 1:d3b7bde3995c 623
mluis 0:62d1edcc13d1 624 static u4_t convFreq (xref2u1_t ptr) {
mluis 0:62d1edcc13d1 625 u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
mluis 1:d3b7bde3995c 626 if( freq < EU868_FREQ_MIN || freq > EU868_FREQ_MAX )
mluis 1:d3b7bde3995c 627 freq = 0;
mluis 0:62d1edcc13d1 628 return freq;
mluis 0:62d1edcc13d1 629 }
mluis 0:62d1edcc13d1 630
mluis 0:62d1edcc13d1 631 static u1_t mapChannels (u1_t chpage, u2_t chmap) {
mluis 1:d3b7bde3995c 632 // Bad page, disable all channel, enable non-existent
mluis 1:d3b7bde3995c 633 if( chpage != 0 || chmap==0 || (chmap & ~LMIC.channelMap) != 0 )
mluis 1:d3b7bde3995c 634 return 0; // illegal input
mluis 0:62d1edcc13d1 635 for( u1_t chnl=0; chnl<MAX_CHANNELS; chnl++ ) {
mluis 1:d3b7bde3995c 636 if( (chmap & (1<<chnl)) != 0 && LMIC.channelFreq[chnl] == 0 )
mluis 1:d3b7bde3995c 637 chmap &= ~(1<<chnl); // ignore - channel is not defined
mluis 0:62d1edcc13d1 638 }
mluis 0:62d1edcc13d1 639 LMIC.channelMap = chmap;
mluis 0:62d1edcc13d1 640 return 1;
mluis 0:62d1edcc13d1 641 }
mluis 0:62d1edcc13d1 642
mluis 0:62d1edcc13d1 643
mluis 0:62d1edcc13d1 644 static void updateTx (ostime_t txbeg) {
mluis 0:62d1edcc13d1 645 u4_t freq = LMIC.channelFreq[LMIC.txChnl];
mluis 0:62d1edcc13d1 646 // Update global/band specific duty cycle stats
mluis 0:62d1edcc13d1 647 ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
mluis 0:62d1edcc13d1 648 // Update channel/global duty cycle stats
mluis 0:62d1edcc13d1 649 xref2band_t band = &LMIC.bands[freq & 0x3];
mluis 0:62d1edcc13d1 650 LMIC.freq = freq & ~(u4_t)3;
mluis 0:62d1edcc13d1 651 LMIC.txpow = band->txpow;
mluis 0:62d1edcc13d1 652 band->avail = txbeg + airtime * band->txcap;
mluis 0:62d1edcc13d1 653 if( LMIC.globalDutyRate != 0 )
mluis 1:d3b7bde3995c 654 LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
mluis 0:62d1edcc13d1 655 }
mluis 0:62d1edcc13d1 656
mluis 0:62d1edcc13d1 657 static ostime_t nextTx (ostime_t now) {
mluis 1:d3b7bde3995c 658 u1_t bmap=0xF;
mluis 1:d3b7bde3995c 659 do {
mluis 1:d3b7bde3995c 660 ostime_t mintime = now + /*10h*/36000*OSTICKS_PER_SEC;
mluis 1:d3b7bde3995c 661 u1_t band=0;
mluis 1:d3b7bde3995c 662 for( u1_t bi=0; bi<4; bi++ ) {
mluis 1:d3b7bde3995c 663 if( (bmap & (1<<bi)) && mintime - LMIC.bands[bi].avail > 0 )
mluis 1:d3b7bde3995c 664 mintime = LMIC.bands[band = bi].avail;
mluis 0:62d1edcc13d1 665 }
mluis 1:d3b7bde3995c 666 // Find next channel in given band
mluis 1:d3b7bde3995c 667 u1_t chnl = LMIC.bands[band].lastchnl;
mluis 1:d3b7bde3995c 668 for( u1_t ci=0; ci<MAX_CHANNELS; ci++ ) {
mluis 1:d3b7bde3995c 669 if( (chnl = (chnl+1)) >= MAX_CHANNELS )
mluis 1:d3b7bde3995c 670 chnl -= MAX_CHANNELS;
mluis 1:d3b7bde3995c 671 if( (LMIC.channelMap & (1<<chnl)) != 0 && // channel enabled
mluis 1:d3b7bde3995c 672 (LMIC.channelDrMap[chnl] & (1<<(LMIC.datarate&0xF))) != 0 &&
mluis 1:d3b7bde3995c 673 band == (LMIC.channelFreq[chnl] & 0x3) ) { // in selected band
mluis 1:d3b7bde3995c 674 LMIC.txChnl = LMIC.bands[band].lastchnl = chnl;
mluis 1:d3b7bde3995c 675 return mintime;
mluis 1:d3b7bde3995c 676 }
mluis 0:62d1edcc13d1 677 }
mluis 1:d3b7bde3995c 678 if( (bmap &= ~(1<<band)) == 0 ) {
mluis 1:d3b7bde3995c 679 // No feasible channel found!
mluis 1:d3b7bde3995c 680 return mintime;
mluis 1:d3b7bde3995c 681 }
mluis 0:62d1edcc13d1 682 } while(1);
mluis 0:62d1edcc13d1 683 }
mluis 0:62d1edcc13d1 684
mluis 1:d3b7bde3995c 685
mluis 0:62d1edcc13d1 686 static void setBcnRxParams (void) {
mluis 0:62d1edcc13d1 687 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 688 LMIC.freq = LMIC.channelFreq[LMIC.bcnChnl] & ~(u4_t)3;
mluis 0:62d1edcc13d1 689 LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
mluis 0:62d1edcc13d1 690 }
mluis 0:62d1edcc13d1 691
mluis 0:62d1edcc13d1 692 #define setRx1Params() /*LMIC.freq/rps remain unchanged*/
mluis 0:62d1edcc13d1 693
dudmuck 2:974cafbfb159 694 static void initJoinLoop (void) { // eu868
mluis 1:d3b7bde3995c 695 LMIC.txChnl = os_getRndU1() % 6;
mluis 0:62d1edcc13d1 696 LMIC.adrTxPow = 14;
mluis 0:62d1edcc13d1 697 setDrJoin(DRCHG_SET, DR_SF7);
mluis 0:62d1edcc13d1 698 initDefaultChannels(1);
mluis 0:62d1edcc13d1 699 ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
mluis 1:d3b7bde3995c 700 LMIC.txend = LMIC.bands[BAND_MILLI].avail + rndDelay(8);
mluis 0:62d1edcc13d1 701 }
mluis 0:62d1edcc13d1 702
mluis 0:62d1edcc13d1 703 static ostime_t nextJoinState (void) {
mluis 1:d3b7bde3995c 704 u1_t failed = 0;
mluis 1:d3b7bde3995c 705
mluis 0:62d1edcc13d1 706 // Try 869.x and then 864.x with same DR
mluis 0:62d1edcc13d1 707 // If both fail try next lower datarate
mluis 1:d3b7bde3995c 708 if( ++LMIC.txChnl == 6 )
mluis 1:d3b7bde3995c 709 LMIC.txChnl = 0;
mluis 1:d3b7bde3995c 710 if( (++LMIC.txCnt & 1) == 0 ) {
mluis 1:d3b7bde3995c 711 // Lower DR every 2nd try (having tried 868.x and 864.x with the same DR)
mluis 1:d3b7bde3995c 712 if( LMIC.datarate == DR_SF12 )
mluis 1:d3b7bde3995c 713 failed = 1; // we have tried all DR - signal EV_JOIN_FAILED
mluis 1:d3b7bde3995c 714 else
mluis 1:d3b7bde3995c 715 setDrJoin(DRCHG_NOJACC, decDR((dr_t)LMIC.datarate));
mluis 1:d3b7bde3995c 716 }
mluis 1:d3b7bde3995c 717 // Clear NEXTCHNL because join state engine controls channel hopping
mluis 0:62d1edcc13d1 718 LMIC.opmode &= ~OP_NEXTCHNL;
mluis 1:d3b7bde3995c 719 // Move txend to randomize synchronized concurrent joins.
mluis 1:d3b7bde3995c 720 // Duty cycle is based on txend.
mluis 1:d3b7bde3995c 721 ostime_t time = os_getTime();
mluis 1:d3b7bde3995c 722 if( time - LMIC.bands[BAND_MILLI].avail < 0 )
mluis 1:d3b7bde3995c 723 time = LMIC.bands[BAND_MILLI].avail;
mluis 1:d3b7bde3995c 724 LMIC.txend = time +
mluis 1:d3b7bde3995c 725 (isTESTMODE()
mluis 1:d3b7bde3995c 726 // Avoid collision with JOIN ACCEPT @ SF12 being sent by GW (but we missed it)
mluis 1:d3b7bde3995c 727 ? DNW2_SAFETY_ZONE
mluis 1:d3b7bde3995c 728 // Otherwise: randomize join (street lamp case):
mluis 1:d3b7bde3995c 729 // SF12:255, SF11:127, .., SF7:8secs
mluis 1:d3b7bde3995c 730 : DNW2_SAFETY_ZONE+rndDelay(255>>LMIC.datarate));
mluis 1:d3b7bde3995c 731 // 1 - triggers EV_JOIN_FAILED event
mluis 1:d3b7bde3995c 732 return failed;
mluis 0:62d1edcc13d1 733 }
mluis 0:62d1edcc13d1 734
mluis 0:62d1edcc13d1 735 //
mluis 0:62d1edcc13d1 736 // END: EU868 related stuff
mluis 0:62d1edcc13d1 737 //
mluis 0:62d1edcc13d1 738 // ================================================================================
mluis 1:d3b7bde3995c 739 #elif defined(CFG_us915)
mluis 0:62d1edcc13d1 740 // ================================================================================
mluis 0:62d1edcc13d1 741 //
mluis 0:62d1edcc13d1 742 // BEG: US915 related stuff
mluis 0:62d1edcc13d1 743 //
mluis 0:62d1edcc13d1 744
dudmuck 2:974cafbfb159 745 static void initDefaultChannels (void)
dudmuck 2:974cafbfb159 746 {
dudmuck 2:974cafbfb159 747 #ifdef CHNL_HYBRID
dudmuck 2:974cafbfb159 748 int idx = CHNL_HYBRID >> 1;
dudmuck 2:974cafbfb159 749 LMIC.channelMap[0] = 0x0000;
dudmuck 2:974cafbfb159 750 LMIC.channelMap[1] = 0x0000;
dudmuck 2:974cafbfb159 751 LMIC.channelMap[2] = 0x0000;
dudmuck 2:974cafbfb159 752 LMIC.channelMap[3] = 0x0000;
dudmuck 2:974cafbfb159 753 if (CHNL_HYBRID & 1)
dudmuck 2:974cafbfb159 754 LMIC.channelMap[idx] = 0xff00;
dudmuck 2:974cafbfb159 755 else
dudmuck 2:974cafbfb159 756 LMIC.channelMap[idx] = 0x00ff;
dudmuck 2:974cafbfb159 757
dudmuck 2:974cafbfb159 758 LMIC.channelMap[4] = 1 << CHNL_HYBRID;
dudmuck 2:974cafbfb159 759 LMIC.txpow_limit = 20;
dudmuck 2:974cafbfb159 760 #else
mluis 0:62d1edcc13d1 761 for( u1_t i=0; i<4; i++ )
mluis 1:d3b7bde3995c 762 LMIC.channelMap[i] = 0xFFFF;
mluis 0:62d1edcc13d1 763 LMIC.channelMap[4] = 0x00FF;
dudmuck 2:974cafbfb159 764
dudmuck 2:974cafbfb159 765 LMIC.txpow_limit = 30;
dudmuck 2:974cafbfb159 766 #endif
dudmuck 2:974cafbfb159 767
dudmuck 2:974cafbfb159 768 LMIC.txpow = LMIC.txpow_limit;
dudmuck 2:974cafbfb159 769 LMIC.adrTxPow = LMIC.txpow_limit;
mluis 0:62d1edcc13d1 770 }
mluis 0:62d1edcc13d1 771
mluis 0:62d1edcc13d1 772 static u4_t convFreq (xref2u1_t ptr) {
mluis 0:62d1edcc13d1 773 u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
dudmuck 2:974cafbfb159 774 if( freq < US915_FREQ_MIN || freq > US915_FREQ_MAX )
mluis 1:d3b7bde3995c 775 freq = 0;
mluis 0:62d1edcc13d1 776 return freq;
mluis 0:62d1edcc13d1 777 }
mluis 0:62d1edcc13d1 778
mluis 3:519c71d29a06 779
mluis 1:d3b7bde3995c 780 bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
mluis 0:62d1edcc13d1 781 if( chidx < 72 || chidx >= 72+MAX_XCHANNELS )
mluis 1:d3b7bde3995c 782 return 0; // channels 0..71 are hardwired
mluis 0:62d1edcc13d1 783 chidx -= 72;
mluis 0:62d1edcc13d1 784 LMIC.xchFreq[chidx] = freq;
mluis 1:d3b7bde3995c 785 LMIC.xchDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF10,DR_SF8C) : drmap;
mluis 0:62d1edcc13d1 786 LMIC.channelMap[chidx>>4] |= (1<<(chidx&0xF));
mluis 0:62d1edcc13d1 787 return 1;
mluis 0:62d1edcc13d1 788 }
mluis 0:62d1edcc13d1 789
mluis 1:d3b7bde3995c 790 void LMIC_disableChannel (u1_t channel) {
mluis 1:d3b7bde3995c 791 if( channel < 72+MAX_XCHANNELS )
mluis 1:d3b7bde3995c 792 LMIC.channelMap[channel/4] &= ~(1<<(channel&0xF));
mluis 1:d3b7bde3995c 793 }
mluis 0:62d1edcc13d1 794
mluis 0:62d1edcc13d1 795 static u1_t mapChannels (u1_t chpage, u2_t chmap) {
mluis 0:62d1edcc13d1 796 if( chpage == MCMD_LADR_CHP_125ON || chpage == MCMD_LADR_CHP_125OFF ) {
mluis 1:d3b7bde3995c 797 u2_t en125 = chpage == MCMD_LADR_CHP_125ON ? 0xFFFF : 0x0000;
mluis 1:d3b7bde3995c 798 for( u1_t u=0; u<4; u++ )
mluis 1:d3b7bde3995c 799 LMIC.channelMap[u] = en125;
mluis 1:d3b7bde3995c 800 LMIC.channelMap[64/16] = chmap;
mluis 0:62d1edcc13d1 801 } else {
mluis 1:d3b7bde3995c 802 if( chpage >= (72+MAX_XCHANNELS+15)/16 )
mluis 1:d3b7bde3995c 803 return 0;
mluis 1:d3b7bde3995c 804 LMIC.channelMap[chpage] = chmap;
mluis 0:62d1edcc13d1 805 }
mluis 0:62d1edcc13d1 806 return 1;
mluis 0:62d1edcc13d1 807 }
mluis 0:62d1edcc13d1 808
mluis 0:62d1edcc13d1 809 static void updateTx (ostime_t txbeg) {
mluis 0:62d1edcc13d1 810 u1_t chnl = LMIC.txChnl;
dudmuck 2:974cafbfb159 811 #ifdef JOIN_REQ_DEBUG
dudmuck 2:974cafbfb159 812 printf("chnl%d ", chnl);
dudmuck 2:974cafbfb159 813 #endif /* JOIN_REQ_DEBUG */
mluis 0:62d1edcc13d1 814 if( chnl < 64 ) {
mluis 1:d3b7bde3995c 815 LMIC.freq = US915_125kHz_UPFBASE + chnl*US915_125kHz_UPFSTEP;
dudmuck 2:974cafbfb159 816
dudmuck 2:974cafbfb159 817 if (LMIC.opmode & OP_JOINING) {
dudmuck 2:974cafbfb159 818 /* use max allowed power for joining */
dudmuck 2:974cafbfb159 819 if (LMIC.txpow < LMIC.txpow_limit)
dudmuck 2:974cafbfb159 820 LMIC.txpow = LMIC.txpow_limit;
dudmuck 2:974cafbfb159 821 }
dudmuck 2:974cafbfb159 822
dudmuck 2:974cafbfb159 823 #ifdef JOIN_REQ_DEBUG
dudmuck 2:974cafbfb159 824 printf("%d (125khz)\r\n", LMIC.freq);
dudmuck 2:974cafbfb159 825 #endif /* JOIN_REQ_DEBUG */
mluis 1:d3b7bde3995c 826 return;
mluis 0:62d1edcc13d1 827 }
dudmuck 2:974cafbfb159 828
dudmuck 2:974cafbfb159 829 /* using 500KHz channel */
dudmuck 2:974cafbfb159 830 if (LMIC.txpow_limit >= 26)
dudmuck 2:974cafbfb159 831 LMIC.txpow = 26;
dudmuck 2:974cafbfb159 832 else
dudmuck 2:974cafbfb159 833 LMIC.txpow = LMIC.txpow_limit;
dudmuck 2:974cafbfb159 834
mluis 0:62d1edcc13d1 835 if( chnl < 64+8 ) {
mluis 1:d3b7bde3995c 836 LMIC.freq = US915_500kHz_UPFBASE + (chnl-64)*US915_500kHz_UPFSTEP;
dudmuck 2:974cafbfb159 837 #ifdef JOIN_REQ_DEBUG
dudmuck 2:974cafbfb159 838 printf("%d (500k)\r\n", LMIC.freq);
dudmuck 2:974cafbfb159 839 #endif /* JOIN_REQ_DEBUG */
mluis 0:62d1edcc13d1 840 } else {
mluis 1:d3b7bde3995c 841 ASSERT(chnl < 64+8+MAX_XCHANNELS);
mluis 1:d3b7bde3995c 842 LMIC.freq = LMIC.xchFreq[chnl-72];
dudmuck 2:974cafbfb159 843 #ifdef JOIN_REQ_DEBUG
dudmuck 2:974cafbfb159 844 printf("%d (x)\r\n", LMIC.freq);
dudmuck 2:974cafbfb159 845 #endif /* JOIN_REQ_DEBUG */
mluis 0:62d1edcc13d1 846 }
mluis 0:62d1edcc13d1 847
mluis 0:62d1edcc13d1 848 // Update global duty cycle stats
mluis 0:62d1edcc13d1 849 if( LMIC.globalDutyRate != 0 ) {
mluis 1:d3b7bde3995c 850 ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
mluis 1:d3b7bde3995c 851 LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
mluis 0:62d1edcc13d1 852 }
mluis 0:62d1edcc13d1 853 }
mluis 0:62d1edcc13d1 854
dudmuck 2:974cafbfb159 855 int count_bits(u2_t v)
dudmuck 2:974cafbfb159 856 {
dudmuck 2:974cafbfb159 857 int c;
dudmuck 2:974cafbfb159 858
dudmuck 2:974cafbfb159 859 for (c = 0; v; c++) {
dudmuck 2:974cafbfb159 860 v &= v - 1; // clear the last significant bit set
dudmuck 2:974cafbfb159 861 }
dudmuck 2:974cafbfb159 862
dudmuck 2:974cafbfb159 863 return c;
dudmuck 2:974cafbfb159 864 }
dudmuck 2:974cafbfb159 865
mluis 0:62d1edcc13d1 866 // US does not have duty cycling - return now as earliest TX time
mluis 0:62d1edcc13d1 867 #define nextTx(now) (_nextTx(),(now))
mluis 0:62d1edcc13d1 868 static void _nextTx (void) {
dudmuck 2:974cafbfb159 869 u1_t prev_ch = LMIC.txChnl;
dudmuck 2:974cafbfb159 870 u1_t tries = 0;
dudmuck 2:974cafbfb159 871 u1_t en_cnt;
dudmuck 2:974cafbfb159 872
mluis 1:d3b7bde3995c 873 if( LMIC.datarate >= DR_SF8C ) { // 500kHz
dudmuck 2:974cafbfb159 874 #ifdef CHNL_HYBRID
dudmuck 2:974cafbfb159 875 LMIC.txChnl = 1 << CHNL_HYBRID; // only one channel possible
dudmuck 2:974cafbfb159 876 #else
dudmuck 2:974cafbfb159 877 en_cnt = count_bits(LMIC.channelMap[4]);
dudmuck 2:974cafbfb159 878 do {
dudmuck 2:974cafbfb159 879 do {
dudmuck 2:974cafbfb159 880 LMIC.chRnd = os_getRndU1() & 7;
dudmuck 2:974cafbfb159 881 if (++tries > 48)
dudmuck 2:974cafbfb159 882 return;
dudmuck 2:974cafbfb159 883 } while ( !(LMIC.channelMap[4] & (1 << LMIC.chRnd)) );
dudmuck 2:974cafbfb159 884 LMIC.txChnl = 64 + LMIC.chRnd;
dudmuck 2:974cafbfb159 885 if (en_cnt < 2)
dudmuck 2:974cafbfb159 886 prev_ch = LMIC.txChnl + 1; // not enough enabled, skip the following test
dudmuck 2:974cafbfb159 887
dudmuck 2:974cafbfb159 888 } while (prev_ch == LMIC.txChnl);
dudmuck 2:974cafbfb159 889 #endif
mluis 1:d3b7bde3995c 890 } else { // 125kHz
dudmuck 2:974cafbfb159 891 #ifdef CHNL_HYBRID
dudmuck 2:974cafbfb159 892 u1_t idx = CHNL_HYBRID >> 1;
dudmuck 2:974cafbfb159 893 en_cnt = count_bits(LMIC.channelMap[idx]);
dudmuck 2:974cafbfb159 894 do {
dudmuck 2:974cafbfb159 895 do {
dudmuck 2:974cafbfb159 896 LMIC.chRnd = os_getRndU1() & 15;
dudmuck 2:974cafbfb159 897 if (++tries > 96)
dudmuck 2:974cafbfb159 898 return;
dudmuck 2:974cafbfb159 899 } while ( !(LMIC.channelMap[idx] & (1 << LMIC.chRnd)) );
dudmuck 2:974cafbfb159 900 LMIC.txChnl = (idx << 4) + LMIC.chRnd;
dudmuck 2:974cafbfb159 901 if (en_cnt < 2)
dudmuck 2:974cafbfb159 902 prev_ch = LMIC.txChnl + 1; // not enough enabled, skip the following test
dudmuck 2:974cafbfb159 903
dudmuck 2:974cafbfb159 904 } while (prev_ch == LMIC.txChnl);
dudmuck 2:974cafbfb159 905 #else
dudmuck 2:974cafbfb159 906 en_cnt = count_bits(LMIC.channelMap[0]);
dudmuck 2:974cafbfb159 907 en_cnt += count_bits(LMIC.channelMap[1]);
dudmuck 2:974cafbfb159 908 en_cnt += count_bits(LMIC.channelMap[2]);
dudmuck 2:974cafbfb159 909 en_cnt += count_bits(LMIC.channelMap[3]);
dudmuck 2:974cafbfb159 910 do {
dudmuck 2:974cafbfb159 911 do {
dudmuck 2:974cafbfb159 912 LMIC.chRnd = os_getRndU1() & 63;
dudmuck 2:974cafbfb159 913 } while ( !(LMIC.channelMap[LMIC.chRnd >> 4] & (1 << (LMIC.chRnd & 15))) );
dudmuck 2:974cafbfb159 914 LMIC.txChnl = LMIC.chRnd;
dudmuck 2:974cafbfb159 915 if (en_cnt < 2)
dudmuck 2:974cafbfb159 916 prev_ch = LMIC.txChnl + 1; // not enough enabled, skip the following test
dudmuck 2:974cafbfb159 917
dudmuck 2:974cafbfb159 918 } while (prev_ch == LMIC.txChnl);
dudmuck 2:974cafbfb159 919 #endif
mluis 0:62d1edcc13d1 920 }
mluis 0:62d1edcc13d1 921 }
mluis 0:62d1edcc13d1 922
mluis 0:62d1edcc13d1 923 static void setBcnRxParams (void) {
mluis 0:62d1edcc13d1 924 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 925 LMIC.freq = US915_500kHz_DNFBASE + LMIC.bcnChnl * US915_500kHz_DNFSTEP;
mluis 0:62d1edcc13d1 926 LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
mluis 0:62d1edcc13d1 927 }
mluis 0:62d1edcc13d1 928
mluis 1:d3b7bde3995c 929 #define setRx1Params() { \
mluis 0:62d1edcc13d1 930 LMIC.freq = US915_500kHz_DNFBASE + (LMIC.txChnl & 0x7) * US915_500kHz_DNFSTEP; \
mluis 1:d3b7bde3995c 931 if( /* TX datarate */LMIC.dndr < DR_SF8C ) \
mluis 1:d3b7bde3995c 932 LMIC.dndr += DR_SF10CR - DR_SF10; \
mluis 1:d3b7bde3995c 933 else if( LMIC.dndr == DR_SF8C ) \
mluis 1:d3b7bde3995c 934 LMIC.dndr = DR_SF7CR; \
mluis 1:d3b7bde3995c 935 LMIC.rps = dndr2rps(LMIC.dndr); \
mluis 0:62d1edcc13d1 936 }
mluis 0:62d1edcc13d1 937
mluis 0:62d1edcc13d1 938 static void initJoinLoop (void) {
mluis 1:d3b7bde3995c 939 LMIC.chRnd = 0;
dudmuck 2:974cafbfb159 940 #ifdef CHNL_HYBRID
dudmuck 2:974cafbfb159 941 LMIC.joinBlockChnl = 0;
dudmuck 2:974cafbfb159 942 LMIC.joinBlock = CHNL_HYBRID;
dudmuck 2:974cafbfb159 943 LMIC.txChnl = LMIC.joinBlock << 3;
dudmuck 2:974cafbfb159 944 #else
mluis 1:d3b7bde3995c 945 LMIC.txChnl = 0;
dudmuck 2:974cafbfb159 946 LMIC.joinBlockChnl = 0;
dudmuck 2:974cafbfb159 947 LMIC.joinBlock = 0;
dudmuck 2:974cafbfb159 948 #endif
dudmuck 2:974cafbfb159 949 LMIC.datarate = DR_SF10;
dudmuck 2:974cafbfb159 950 LMIC.adrTxPow = LMIC.txpow_limit;
mluis 0:62d1edcc13d1 951 ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
mluis 0:62d1edcc13d1 952 LMIC.txend = os_getTime();
mluis 0:62d1edcc13d1 953 setDrJoin(DRCHG_SET, DR_SF7);
mluis 0:62d1edcc13d1 954 }
mluis 0:62d1edcc13d1 955
mluis 0:62d1edcc13d1 956 static ostime_t nextJoinState (void) {
mluis 1:d3b7bde3995c 957 u1_t failed = 0;
dudmuck 2:974cafbfb159 958
dudmuck 2:974cafbfb159 959 if( LMIC.datarate == DR_SF8C ) {
dudmuck 2:974cafbfb159 960 // attempted 500khz channel, try 125khz channel in next block
dudmuck 2:974cafbfb159 961 LMIC.datarate = DR_SF10;
dudmuck 2:974cafbfb159 962 if (++LMIC.joinBlock == 8) {
dudmuck 2:974cafbfb159 963 LMIC.joinBlock = 0;
dudmuck 2:974cafbfb159 964 if (++LMIC.joinBlockChnl == 8)
dudmuck 2:974cafbfb159 965 LMIC.joinBlockChnl = 0;
dudmuck 2:974cafbfb159 966 }
dudmuck 2:974cafbfb159 967 LMIC.txChnl = (LMIC.joinBlock << 3) + LMIC.joinBlockChnl;
mluis 0:62d1edcc13d1 968 } else {
dudmuck 2:974cafbfb159 969 // attempted 125khz channel, try 500khz channel
dudmuck 2:974cafbfb159 970 LMIC.datarate = DR_SF8C;
dudmuck 2:974cafbfb159 971 LMIC.txChnl = LMIC.joinBlock + 64;
mluis 0:62d1edcc13d1 972 }
dudmuck 2:974cafbfb159 973 #ifdef JOIN_REQ_DEBUG
dudmuck 2:974cafbfb159 974 printf("njs blk%d, dr%d, txChnl%d ", LMIC.joinBlock, LMIC.datarate, LMIC.txChnl); // crlf in updateTx()
dudmuck 2:974cafbfb159 975 #endif /* JOIN_REQ_DEBUG */
dudmuck 2:974cafbfb159 976
mluis 1:d3b7bde3995c 977 LMIC.opmode &= ~OP_NEXTCHNL;
mluis 1:d3b7bde3995c 978 LMIC.txend = os_getTime() +
mluis 1:d3b7bde3995c 979 (isTESTMODE()
mluis 1:d3b7bde3995c 980 // Avoid collision with JOIN ACCEPT being sent by GW (but we missed it - GW is still busy)
mluis 1:d3b7bde3995c 981 ? DNW2_SAFETY_ZONE
mluis 1:d3b7bde3995c 982 // Otherwise: randomize join (street lamp case):
mluis 1:d3b7bde3995c 983 // SF10:16, SF9=8,..SF8C:1secs
mluis 1:d3b7bde3995c 984 : rndDelay(16>>LMIC.datarate));
mluis 1:d3b7bde3995c 985 // 1 - triggers EV_JOIN_FAILED event
mluis 1:d3b7bde3995c 986 return failed;
mluis 0:62d1edcc13d1 987 }
mluis 0:62d1edcc13d1 988
mluis 0:62d1edcc13d1 989 //
mluis 0:62d1edcc13d1 990 // END: US915 related stuff
mluis 0:62d1edcc13d1 991 //
mluis 0:62d1edcc13d1 992 // ================================================================================
mluis 0:62d1edcc13d1 993 #else
mluis 0:62d1edcc13d1 994 #error Unsupported frequency band!
mluis 0:62d1edcc13d1 995 #endif
mluis 0:62d1edcc13d1 996
mluis 0:62d1edcc13d1 997
mluis 0:62d1edcc13d1 998 static void runEngineUpdate (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 999 engineUpdate();
mluis 0:62d1edcc13d1 1000 }
mluis 0:62d1edcc13d1 1001
mluis 0:62d1edcc13d1 1002
mluis 0:62d1edcc13d1 1003 static void reportEvent (ev_t ev) {
mluis 0:62d1edcc13d1 1004 EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
mluis 1:d3b7bde3995c 1005 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1006 e_.info = ev));
mluis 0:62d1edcc13d1 1007 ON_LMIC_EVENT(ev);
mluis 0:62d1edcc13d1 1008 engineUpdate();
mluis 0:62d1edcc13d1 1009 }
mluis 0:62d1edcc13d1 1010
mluis 0:62d1edcc13d1 1011
mluis 1:d3b7bde3995c 1012 static void runReset (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1013 // Disable session
mluis 1:d3b7bde3995c 1014 LMIC_reset();
mluis 1:d3b7bde3995c 1015 LMIC_startJoining();
mluis 1:d3b7bde3995c 1016 reportEvent(EV_RESET);
mluis 1:d3b7bde3995c 1017 }
mluis 1:d3b7bde3995c 1018
mluis 0:62d1edcc13d1 1019 static void stateJustJoined (void) {
mluis 0:62d1edcc13d1 1020 LMIC.seqnoDn = LMIC.seqnoUp = 0;
mluis 0:62d1edcc13d1 1021 LMIC.rejoinCnt = 0;
mluis 0:62d1edcc13d1 1022 LMIC.dnConf = LMIC.adrChanged = LMIC.ladrAns = LMIC.devsAns = 0;
mluis 0:62d1edcc13d1 1023 LMIC.moreData = LMIC.dn2Ans = LMIC.snchAns = LMIC.dutyCapAns = 0;
mluis 0:62d1edcc13d1 1024 LMIC.pingSetAns = 0;
mluis 0:62d1edcc13d1 1025 LMIC.upRepeat = 0;
mluis 0:62d1edcc13d1 1026 LMIC.adrAckReq = LINK_CHECK_INIT;
mluis 0:62d1edcc13d1 1027 LMIC.dn2Dr = DR_DNW2;
mluis 0:62d1edcc13d1 1028 LMIC.dn2Freq = FREQ_DNW2;
mluis 0:62d1edcc13d1 1029 LMIC.bcnChnl = CHNL_BCN;
mluis 0:62d1edcc13d1 1030 LMIC.ping.freq = FREQ_PING;
mluis 0:62d1edcc13d1 1031 LMIC.ping.dr = DR_PING;
mluis 0:62d1edcc13d1 1032 }
mluis 0:62d1edcc13d1 1033
mluis 0:62d1edcc13d1 1034
mluis 0:62d1edcc13d1 1035 // ================================================================================
mluis 0:62d1edcc13d1 1036 // Decoding frames
mluis 0:62d1edcc13d1 1037
mluis 0:62d1edcc13d1 1038
mluis 0:62d1edcc13d1 1039 // Decode beacon - do not overwrite bcninfo unless we have a match!
mluis 0:62d1edcc13d1 1040 static int decodeBeacon (void) {
mluis 0:62d1edcc13d1 1041 ASSERT(LMIC.dataLen == LEN_BCN); // implicit header RX guarantees this
mluis 0:62d1edcc13d1 1042 xref2u1_t d = LMIC.frame;
mluis 1:d3b7bde3995c 1043 if(
dudmuck 2:974cafbfb159 1044 #ifdef CFG_eu868
mluis 1:d3b7bde3995c 1045 d[OFF_BCN_CRC1] != (u1_t)os_crc16(d,OFF_BCN_CRC1)
dudmuck 2:974cafbfb159 1046 #elif defined(CFG_us915)
mluis 1:d3b7bde3995c 1047 os_rlsbf2(&d[OFF_BCN_CRC1]) != os_crc16(d,OFF_BCN_CRC1)
mluis 1:d3b7bde3995c 1048 #endif
mluis 1:d3b7bde3995c 1049 )
mluis 1:d3b7bde3995c 1050 return 0; // first (common) part fails CRC check
mluis 0:62d1edcc13d1 1051 // First set of fields is ok
mluis 0:62d1edcc13d1 1052 u4_t bcnnetid = os_rlsbf4(&d[OFF_BCN_NETID]) & 0xFFFFFF;
mluis 0:62d1edcc13d1 1053 if( bcnnetid != LMIC.netid )
mluis 1:d3b7bde3995c 1054 return -1; // not the beacon we're looking for
mluis 0:62d1edcc13d1 1055
mluis 0:62d1edcc13d1 1056 LMIC.bcninfo.flags &= ~(BCN_PARTIAL|BCN_FULL);
mluis 0:62d1edcc13d1 1057 // Match - update bcninfo structure
mluis 1:d3b7bde3995c 1058 LMIC.bcninfo.snr = LMIC.snr;
mluis 1:d3b7bde3995c 1059 LMIC.bcninfo.rssi = LMIC.rssi;
mluis 0:62d1edcc13d1 1060 LMIC.bcninfo.txtime = LMIC.rxtime - AIRTIME_BCN_osticks;
mluis 0:62d1edcc13d1 1061 LMIC.bcninfo.time = os_rlsbf4(&d[OFF_BCN_TIME]);
mluis 0:62d1edcc13d1 1062 LMIC.bcninfo.flags |= BCN_PARTIAL;
mluis 0:62d1edcc13d1 1063
mluis 0:62d1edcc13d1 1064 // Check 2nd set
mluis 0:62d1edcc13d1 1065 if( os_rlsbf2(&d[OFF_BCN_CRC2]) != os_crc16(d,OFF_BCN_CRC2) )
mluis 1:d3b7bde3995c 1066 return 1;
mluis 0:62d1edcc13d1 1067 // Second set of fields is ok
mluis 0:62d1edcc13d1 1068 LMIC.bcninfo.lat = (s4_t)os_rlsbf4(&d[OFF_BCN_LAT-1]) >> 8; // read as signed 24-bit
mluis 0:62d1edcc13d1 1069 LMIC.bcninfo.lon = (s4_t)os_rlsbf4(&d[OFF_BCN_LON-1]) >> 8; // ditto
mluis 0:62d1edcc13d1 1070 LMIC.bcninfo.info = d[OFF_BCN_INFO];
mluis 0:62d1edcc13d1 1071 LMIC.bcninfo.flags |= BCN_FULL;
mluis 0:62d1edcc13d1 1072 return 2;
mluis 0:62d1edcc13d1 1073 }
mluis 0:62d1edcc13d1 1074
mluis 0:62d1edcc13d1 1075
mluis 0:62d1edcc13d1 1076 static bit_t decodeFrame (void) {
mluis 0:62d1edcc13d1 1077 xref2u1_t d = LMIC.frame;
mluis 0:62d1edcc13d1 1078 u1_t hdr = d[0];
mluis 0:62d1edcc13d1 1079 u1_t ftype = hdr & HDR_FTYPE;
mluis 0:62d1edcc13d1 1080 int dlen = LMIC.dataLen;
mluis 0:62d1edcc13d1 1081 if( dlen < OFF_DAT_OPTS+4 ||
mluis 1:d3b7bde3995c 1082 (hdr & HDR_MAJOR) != HDR_MAJOR_V1 ||
mluis 1:d3b7bde3995c 1083 (ftype != HDR_FTYPE_DADN && ftype != HDR_FTYPE_DCDN) ) {
mluis 1:d3b7bde3995c 1084 // Basic sanity checks failed
mluis 1:d3b7bde3995c 1085 EV(specCond, WARN, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
mluis 1:d3b7bde3995c 1086 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1087 e_.info = dlen < 4 ? 0 : os_rlsbf4(&d[dlen-4]),
mluis 1:d3b7bde3995c 1088 e_.info2 = hdr + (dlen<<8)));
mluis 0:62d1edcc13d1 1089 norx:
mluis 1:d3b7bde3995c 1090 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 1091 return 0;
mluis 0:62d1edcc13d1 1092 }
mluis 0:62d1edcc13d1 1093 // Validate exact frame length
mluis 0:62d1edcc13d1 1094 // Note: device address was already read+evaluated in order to arrive here.
mluis 0:62d1edcc13d1 1095 int fct = d[OFF_DAT_FCT];
mluis 0:62d1edcc13d1 1096 u4_t addr = os_rlsbf4(&d[OFF_DAT_ADDR]);
mluis 0:62d1edcc13d1 1097 u4_t seqno = os_rlsbf2(&d[OFF_DAT_SEQNO]);
mluis 0:62d1edcc13d1 1098 int olen = fct & FCT_OPTLEN;
mluis 0:62d1edcc13d1 1099 int ackup = (fct & FCT_ACK) != 0 ? 1 : 0; // ACK last up frame
mluis 0:62d1edcc13d1 1100 int poff = OFF_DAT_OPTS+olen;
mluis 0:62d1edcc13d1 1101 int pend = dlen-4; // MIC
mluis 0:62d1edcc13d1 1102
mluis 0:62d1edcc13d1 1103 if( addr != LMIC.devaddr ) {
mluis 1:d3b7bde3995c 1104 EV(specCond, WARN, (e_.reason = EV::specCond_t::ALIEN_ADDRESS,
mluis 1:d3b7bde3995c 1105 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1106 e_.info = addr,
mluis 1:d3b7bde3995c 1107 e_.info2 = LMIC.devaddr));
mluis 1:d3b7bde3995c 1108 goto norx;
mluis 0:62d1edcc13d1 1109 }
mluis 0:62d1edcc13d1 1110 if( poff > pend ) {
mluis 1:d3b7bde3995c 1111 EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
mluis 1:d3b7bde3995c 1112 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1113 e_.info = 0x1000000 + (poff-pend) + (fct<<8) + (dlen<<16)));
mluis 1:d3b7bde3995c 1114 goto norx;
mluis 0:62d1edcc13d1 1115 }
mluis 0:62d1edcc13d1 1116
mluis 0:62d1edcc13d1 1117 int port = -1;
mluis 0:62d1edcc13d1 1118 int replayConf = 0;
mluis 0:62d1edcc13d1 1119
mluis 0:62d1edcc13d1 1120 if( pend > poff )
mluis 1:d3b7bde3995c 1121 port = d[poff++];
mluis 0:62d1edcc13d1 1122
mluis 0:62d1edcc13d1 1123 seqno = LMIC.seqnoDn + (u2_t)(seqno - LMIC.seqnoDn);
mluis 0:62d1edcc13d1 1124
mluis 0:62d1edcc13d1 1125 if( !aes_verifyMic(LMIC.nwkKey, LMIC.devaddr, seqno, /*dn*/1, d, pend) ) {
mluis 1:d3b7bde3995c 1126 EV(spe3Cond, ERR, (e_.reason = EV::spe3Cond_t::CORRUPTED_MIC,
mluis 1:d3b7bde3995c 1127 e_.eui1 = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1128 e_.info1 = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1129 e_.info2 = seqno,
mluis 1:d3b7bde3995c 1130 e_.info3 = LMIC.devaddr));
mluis 0:62d1edcc13d1 1131 goto norx;
mluis 0:62d1edcc13d1 1132 }
mluis 1:d3b7bde3995c 1133 if( seqno < LMIC.seqnoDn ) {
mluis 1:d3b7bde3995c 1134 if( (s4_t)seqno > (s4_t)LMIC.seqnoDn ) {
mluis 1:d3b7bde3995c 1135 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
mluis 1:d3b7bde3995c 1136 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1137 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 1138 e_.info2 = seqno));
mluis 1:d3b7bde3995c 1139 goto norx;
mluis 1:d3b7bde3995c 1140 }
mluis 1:d3b7bde3995c 1141 if( seqno != LMIC.seqnoDn-1 || !LMIC.dnConf || ftype != HDR_FTYPE_DCDN ) {
mluis 1:d3b7bde3995c 1142 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_OBSOLETE,
mluis 1:d3b7bde3995c 1143 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1144 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 1145 e_.info2 = seqno));
mluis 1:d3b7bde3995c 1146 goto norx;
mluis 1:d3b7bde3995c 1147 }
mluis 1:d3b7bde3995c 1148 // Replay of previous sequence number allowed only if
mluis 1:d3b7bde3995c 1149 // previous frame and repeated both requested confirmation
mluis 1:d3b7bde3995c 1150 replayConf = 1;
mluis 0:62d1edcc13d1 1151 }
mluis 0:62d1edcc13d1 1152 else {
mluis 1:d3b7bde3995c 1153 if( seqno > LMIC.seqnoDn ) {
mluis 1:d3b7bde3995c 1154 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_SKIP,
mluis 1:d3b7bde3995c 1155 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1156 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 1157 e_.info2 = seqno));
mluis 1:d3b7bde3995c 1158 }
mluis 1:d3b7bde3995c 1159 LMIC.seqnoDn = seqno+1; // next number to be expected
mluis 1:d3b7bde3995c 1160 DO_DEVDB(LMIC.seqnoDn,seqnoDn);
mluis 1:d3b7bde3995c 1161 // DN frame requested confirmation - provide ACK once with next UP frame
mluis 1:d3b7bde3995c 1162 LMIC.dnConf = (ftype == HDR_FTYPE_DCDN ? FCT_ACK : 0);
mluis 0:62d1edcc13d1 1163 }
mluis 0:62d1edcc13d1 1164
mluis 0:62d1edcc13d1 1165 if( LMIC.dnConf || (fct & FCT_MORE) )
mluis 1:d3b7bde3995c 1166 LMIC.opmode |= OP_POLL;
mluis 0:62d1edcc13d1 1167
mluis 0:62d1edcc13d1 1168 // We heard from network
mluis 1:d3b7bde3995c 1169 LMIC.adrChanged = LMIC.rejoinCnt = 0;
mluis 1:d3b7bde3995c 1170 if( LMIC.adrAckReq != LINK_CHECK_OFF )
mluis 1:d3b7bde3995c 1171 LMIC.adrAckReq = LINK_CHECK_INIT;
mluis 0:62d1edcc13d1 1172
mluis 0:62d1edcc13d1 1173 // Process OPTS
mluis 1:d3b7bde3995c 1174 int m = LMIC.rssi - RSSI_OFF - getSensitivity(LMIC.rps);
mluis 0:62d1edcc13d1 1175 LMIC.margin = m < 0 ? 0 : m > 254 ? 254 : m;
mluis 0:62d1edcc13d1 1176
mluis 0:62d1edcc13d1 1177 xref2u1_t opts = &d[OFF_DAT_OPTS];
mluis 0:62d1edcc13d1 1178 int oidx = 0;
mluis 0:62d1edcc13d1 1179 while( oidx < olen ) {
mluis 1:d3b7bde3995c 1180 switch( opts[oidx] ) {
mluis 1:d3b7bde3995c 1181 case MCMD_LCHK_ANS: {
mluis 1:d3b7bde3995c 1182 //int gwmargin = opts[oidx+1];
mluis 1:d3b7bde3995c 1183 //int ngws = opts[oidx+2];
mluis 1:d3b7bde3995c 1184 oidx += 3;
mluis 1:d3b7bde3995c 1185 continue;
mluis 1:d3b7bde3995c 1186 }
mluis 1:d3b7bde3995c 1187 case MCMD_LADR_REQ: {
mluis 1:d3b7bde3995c 1188 u1_t p1 = opts[oidx+1]; // txpow + DR
mluis 1:d3b7bde3995c 1189 u2_t chmap = os_rlsbf2(&opts[oidx+2]);// list of enabled channels
mluis 1:d3b7bde3995c 1190 u1_t chpage = opts[oidx+4] & MCMD_LADR_CHPAGE_MASK; // channel page
mluis 1:d3b7bde3995c 1191 u1_t uprpt = opts[oidx+4] & MCMD_LADR_REPEAT_MASK; // up repeat count
mluis 1:d3b7bde3995c 1192 oidx += 5;
mluis 0:62d1edcc13d1 1193
mluis 1:d3b7bde3995c 1194 LMIC.ladrAns = 0x80 | // Include an answer into next frame up
mluis 1:d3b7bde3995c 1195 MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK;
mluis 1:d3b7bde3995c 1196 if( !mapChannels(chpage, chmap) )
mluis 1:d3b7bde3995c 1197 LMIC.ladrAns &= ~MCMD_LADR_ANS_CHACK;
mluis 1:d3b7bde3995c 1198 dr_t dr = (dr_t)(p1>>MCMD_LADR_DR_SHIFT);
mluis 1:d3b7bde3995c 1199 if( !validDR(dr) ) {
mluis 1:d3b7bde3995c 1200 LMIC.ladrAns &= ~MCMD_LADR_ANS_DRACK;
mluis 1:d3b7bde3995c 1201 EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
mluis 1:d3b7bde3995c 1202 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1203 e_.info = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1204 e_.info2 = Base::msbf4(&opts[oidx-4])));
mluis 1:d3b7bde3995c 1205 }
mluis 1:d3b7bde3995c 1206 if( (LMIC.ladrAns & 0x7F) == (MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK) ) {
mluis 1:d3b7bde3995c 1207 // Nothing went wrong - use settings
mluis 1:d3b7bde3995c 1208 LMIC.upRepeat = uprpt;
mluis 1:d3b7bde3995c 1209 setDrTxpow(DRCHG_NWKCMD, dr, pow2dBm(p1));
mluis 1:d3b7bde3995c 1210 }
mluis 1:d3b7bde3995c 1211 LMIC.adrChanged = 1; // Trigger an ACK to NWK
mluis 1:d3b7bde3995c 1212 continue;
mluis 0:62d1edcc13d1 1213 }
mluis 1:d3b7bde3995c 1214 case MCMD_DEVS_REQ: {
mluis 1:d3b7bde3995c 1215 LMIC.devsAns = 1;
mluis 1:d3b7bde3995c 1216 oidx += 1;
mluis 1:d3b7bde3995c 1217 continue;
mluis 1:d3b7bde3995c 1218 }
mluis 1:d3b7bde3995c 1219 case MCMD_DN2P_SET: {
mluis 1:d3b7bde3995c 1220 dr_t dr = (dr_t)(opts[oidx+1] & 0x0F);
mluis 1:d3b7bde3995c 1221 u4_t freq = convFreq(&opts[oidx+2]);
mluis 1:d3b7bde3995c 1222 oidx += 5;
mluis 1:d3b7bde3995c 1223 LMIC.dn2Ans = 0x80; // answer pending
mluis 1:d3b7bde3995c 1224 if( validDR(dr) )
mluis 1:d3b7bde3995c 1225 LMIC.dn2Ans |= MCMD_DN2P_ANS_DRACK;
mluis 1:d3b7bde3995c 1226 if( freq != 0 )
mluis 1:d3b7bde3995c 1227 LMIC.dn2Ans |= MCMD_DN2P_ANS_CHACK;
mluis 1:d3b7bde3995c 1228 if( LMIC.dn2Ans == (0x80|MCMD_DN2P_ANS_DRACK|MCMD_DN2P_ANS_CHACK) ) {
mluis 1:d3b7bde3995c 1229 LMIC.dn2Dr = dr;
mluis 1:d3b7bde3995c 1230 LMIC.dn2Freq = freq;
mluis 1:d3b7bde3995c 1231 DO_DEVDB(LMIC.dn2Dr,dn2Dr);
mluis 1:d3b7bde3995c 1232 DO_DEVDB(LMIC.dn2Freq,dn2Freq);
mluis 1:d3b7bde3995c 1233 }
mluis 1:d3b7bde3995c 1234 continue;
mluis 0:62d1edcc13d1 1235 }
mluis 1:d3b7bde3995c 1236 case MCMD_DCAP_REQ: {
mluis 1:d3b7bde3995c 1237 u1_t cap = opts[oidx+1];
mluis 1:d3b7bde3995c 1238 oidx += 2;
mluis 1:d3b7bde3995c 1239 // A value cap=0xFF means device is OFF unless enabled again manually.
mluis 1:d3b7bde3995c 1240 if( cap==0xFF )
mluis 1:d3b7bde3995c 1241 LMIC.opmode |= OP_SHUTDOWN; // stop any sending
mluis 1:d3b7bde3995c 1242 LMIC.globalDutyRate = cap & 0xF;
mluis 1:d3b7bde3995c 1243 LMIC.globalDutyAvail = os_getTime();
mluis 1:d3b7bde3995c 1244 DO_DEVDB(cap,dutyCap);
mluis 1:d3b7bde3995c 1245 LMIC.dutyCapAns = 1;
mluis 1:d3b7bde3995c 1246 continue;
mluis 1:d3b7bde3995c 1247 }
mluis 1:d3b7bde3995c 1248 case MCMD_SNCH_REQ: {
mluis 1:d3b7bde3995c 1249 u1_t chidx = opts[oidx+1]; // channel
mluis 1:d3b7bde3995c 1250 u4_t freq = convFreq(&opts[oidx+2]); // freq
mluis 1:d3b7bde3995c 1251 u1_t drs = opts[oidx+5]; // datarate span
mluis 1:d3b7bde3995c 1252 LMIC.snchAns = 0x80;
mluis 1:d3b7bde3995c 1253 if( freq != 0 && LMIC_setupChannel(chidx, freq, DR_RANGE_MAP(drs&0xF,drs>>4), -1) )
mluis 1:d3b7bde3995c 1254 LMIC.snchAns |= MCMD_SNCH_ANS_DRACK|MCMD_SNCH_ANS_FQACK;
mluis 1:d3b7bde3995c 1255 oidx += 6;
mluis 1:d3b7bde3995c 1256 continue;
mluis 0:62d1edcc13d1 1257 }
mluis 1:d3b7bde3995c 1258 case MCMD_PING_SET: {
mluis 1:d3b7bde3995c 1259 u4_t freq = convFreq(&opts[oidx+1]);
mluis 1:d3b7bde3995c 1260 oidx += 4;
mluis 1:d3b7bde3995c 1261 u1_t flags = 0x80;
mluis 1:d3b7bde3995c 1262 if( freq != 0 ) {
mluis 1:d3b7bde3995c 1263 flags |= MCMD_PING_ANS_FQACK;
mluis 1:d3b7bde3995c 1264 LMIC.ping.freq = freq;
mluis 1:d3b7bde3995c 1265 DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
mluis 1:d3b7bde3995c 1266 DO_DEVDB(LMIC.ping.freq, pingFreq);
mluis 1:d3b7bde3995c 1267 DO_DEVDB(LMIC.ping.dr, pingDr);
mluis 1:d3b7bde3995c 1268 }
mluis 1:d3b7bde3995c 1269 LMIC.pingSetAns = flags;
mluis 1:d3b7bde3995c 1270 continue;
mluis 1:d3b7bde3995c 1271 }
mluis 1:d3b7bde3995c 1272 case MCMD_BCNI_ANS: {
mluis 1:d3b7bde3995c 1273 // Ignore if tracking already enabled
mluis 1:d3b7bde3995c 1274 if( (LMIC.opmode & OP_TRACK) == 0 ) {
mluis 1:d3b7bde3995c 1275 LMIC.bcnChnl = opts[oidx+3];
mluis 1:d3b7bde3995c 1276 // Enable tracking - bcninfoTries
mluis 1:d3b7bde3995c 1277 LMIC.opmode |= OP_TRACK;
mluis 1:d3b7bde3995c 1278 // Cleared later in txComplete handling - triggers EV_BEACON_FOUND
mluis 1:d3b7bde3995c 1279 ASSERT(LMIC.bcninfoTries!=0);
mluis 1:d3b7bde3995c 1280 // Setup RX parameters
mluis 1:d3b7bde3995c 1281 LMIC.bcninfo.txtime = (LMIC.rxtime
mluis 1:d3b7bde3995c 1282 + ms2osticks(os_rlsbf2(&opts[oidx+1]) * MCMD_BCNI_TUNIT)
mluis 1:d3b7bde3995c 1283 + ms2osticksCeil(MCMD_BCNI_TUNIT/2)
mluis 1:d3b7bde3995c 1284 - BCN_INTV_osticks);
mluis 1:d3b7bde3995c 1285 LMIC.bcninfo.flags = 0; // txtime above cannot be used as reference (BCN_PARTIAL|BCN_FULL cleared)
mluis 1:d3b7bde3995c 1286 calcBcnRxWindowFromMillis(MCMD_BCNI_TUNIT,1); // error of +/-N ms
mluis 0:62d1edcc13d1 1287
mluis 1:d3b7bde3995c 1288 EV(lostFrame, INFO, (e_.reason = EV::lostFrame_t::MCMD_BCNI_ANS,
mluis 1:d3b7bde3995c 1289 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1290 e_.lostmic = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1291 e_.info = (LMIC.missedBcns |
mluis 1:d3b7bde3995c 1292 (osticks2us(LMIC.bcninfo.txtime + BCN_INTV_osticks
mluis 1:d3b7bde3995c 1293 - LMIC.bcnRxtime) << 8)),
mluis 1:d3b7bde3995c 1294 e_.time = MAIN::CDEV->ostime2ustime(LMIC.bcninfo.txtime + BCN_INTV_osticks)));
mluis 1:d3b7bde3995c 1295 }
mluis 1:d3b7bde3995c 1296 oidx += 4;
mluis 1:d3b7bde3995c 1297 continue;
mluis 0:62d1edcc13d1 1298 }
mluis 1:d3b7bde3995c 1299 }
mluis 1:d3b7bde3995c 1300 EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
mluis 1:d3b7bde3995c 1301 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1302 e_.info = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1303 e_.info2 = Base::msbf4(&opts[oidx])));
mluis 1:d3b7bde3995c 1304 break;
mluis 0:62d1edcc13d1 1305 }
mluis 0:62d1edcc13d1 1306 if( oidx != olen ) {
mluis 1:d3b7bde3995c 1307 EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
mluis 1:d3b7bde3995c 1308 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1309 e_.info = 0x1000000 + (oidx) + (olen<<8)));
mluis 0:62d1edcc13d1 1310 }
mluis 0:62d1edcc13d1 1311
mluis 0:62d1edcc13d1 1312 if( !replayConf ) {
mluis 1:d3b7bde3995c 1313 // Handle payload only if not a replay
mluis 1:d3b7bde3995c 1314 // Decrypt payload - if any
mluis 1:d3b7bde3995c 1315 if( port >= 0 && pend-poff > 0 )
mluis 1:d3b7bde3995c 1316 aes_cipher(port <= 0 ? LMIC.nwkKey : LMIC.artKey, LMIC.devaddr, seqno, /*dn*/1, d+poff, pend-poff);
mluis 0:62d1edcc13d1 1317
mluis 1:d3b7bde3995c 1318 EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1319 e_.devaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1320 e_.seqno = seqno,
mluis 1:d3b7bde3995c 1321 e_.flags = (port < 0 ? EV::dfinfo_t::NOPORT : 0) | EV::dfinfo_t::DN,
mluis 1:d3b7bde3995c 1322 e_.mic = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1323 e_.hdr = d[LORA::OFF_DAT_HDR],
mluis 1:d3b7bde3995c 1324 e_.fct = d[LORA::OFF_DAT_FCT],
mluis 1:d3b7bde3995c 1325 e_.port = port,
mluis 1:d3b7bde3995c 1326 e_.plen = dlen,
mluis 1:d3b7bde3995c 1327 e_.opts.length = olen,
mluis 1:d3b7bde3995c 1328 memcpy(&e_.opts[0], opts, olen)));
mluis 0:62d1edcc13d1 1329 } else {
mluis 1:d3b7bde3995c 1330 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_REPLAY,
mluis 1:d3b7bde3995c 1331 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1332 e_.info = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1333 e_.info2 = seqno));
mluis 0:62d1edcc13d1 1334 }
mluis 0:62d1edcc13d1 1335
mluis 0:62d1edcc13d1 1336 if( // NWK acks but we don't have a frame pending
mluis 1:d3b7bde3995c 1337 (ackup && LMIC.txCnt == 0) ||
mluis 1:d3b7bde3995c 1338 // We sent up confirmed and we got a response in DNW1/DNW2
mluis 1:d3b7bde3995c 1339 // BUT it did not carry an ACK - this should never happen
mluis 1:d3b7bde3995c 1340 // Do not resend and assume frame was not ACKed.
mluis 1:d3b7bde3995c 1341 (!ackup && LMIC.txCnt != 0) ) {
mluis 1:d3b7bde3995c 1342 EV(specCond, ERR, (e_.reason = EV::specCond_t::SPURIOUS_ACK,
mluis 1:d3b7bde3995c 1343 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1344 e_.info = seqno,
mluis 1:d3b7bde3995c 1345 e_.info2 = ackup));
mluis 0:62d1edcc13d1 1346 }
mluis 0:62d1edcc13d1 1347
mluis 0:62d1edcc13d1 1348 if( LMIC.txCnt != 0 ) // we requested an ACK
mluis 1:d3b7bde3995c 1349 LMIC.txrxFlags |= ackup ? TXRX_ACK : TXRX_NACK;
mluis 0:62d1edcc13d1 1350
mluis 0:62d1edcc13d1 1351 if( port < 0 ) {
mluis 1:d3b7bde3995c 1352 LMIC.txrxFlags |= TXRX_NOPORT;
mluis 1:d3b7bde3995c 1353 LMIC.dataBeg = poff;
mluis 1:d3b7bde3995c 1354 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1355 } else {
mluis 1:d3b7bde3995c 1356 LMIC.txrxFlags |= TXRX_PORT;
mluis 1:d3b7bde3995c 1357 LMIC.dataBeg = poff;
mluis 1:d3b7bde3995c 1358 LMIC.dataLen = pend-poff;
mluis 0:62d1edcc13d1 1359 }
mluis 0:62d1edcc13d1 1360 return 1;
mluis 0:62d1edcc13d1 1361 }
mluis 0:62d1edcc13d1 1362
mluis 0:62d1edcc13d1 1363
mluis 0:62d1edcc13d1 1364 // ================================================================================
mluis 0:62d1edcc13d1 1365 // TX/RX transaction support
mluis 0:62d1edcc13d1 1366
mluis 0:62d1edcc13d1 1367
mluis 0:62d1edcc13d1 1368 static void setupRx2 (void) {
mluis 0:62d1edcc13d1 1369 LMIC.txrxFlags = TXRX_DNW2;
mluis 0:62d1edcc13d1 1370 LMIC.rps = dndr2rps(LMIC.dn2Dr);
mluis 0:62d1edcc13d1 1371 LMIC.freq = LMIC.dn2Freq;
mluis 0:62d1edcc13d1 1372 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1373 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 1374 }
mluis 0:62d1edcc13d1 1375
mluis 0:62d1edcc13d1 1376
mluis 0:62d1edcc13d1 1377 static void schedRx2 (ostime_t delay, osjobcb_t func) {
mluis 0:62d1edcc13d1 1378 // Add 1.5 symbols we need 5 out of 8. Try to sync 1.5 symbols into the preamble.
mluis 0:62d1edcc13d1 1379 LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dn2Dr);
mluis 0:62d1edcc13d1 1380 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
mluis 0:62d1edcc13d1 1381 }
mluis 0:62d1edcc13d1 1382
mluis 0:62d1edcc13d1 1383 static void setupRx1 (osjobcb_t func) {
mluis 0:62d1edcc13d1 1384 LMIC.txrxFlags = TXRX_DNW1;
mluis 0:62d1edcc13d1 1385 // Turn LMIC.rps from TX over to RX
mluis 0:62d1edcc13d1 1386 LMIC.rps = setNocrc(LMIC.rps,1);
mluis 0:62d1edcc13d1 1387 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1388 LMIC.osjob.func = func;
mluis 0:62d1edcc13d1 1389 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 1390 }
mluis 0:62d1edcc13d1 1391
mluis 0:62d1edcc13d1 1392
mluis 0:62d1edcc13d1 1393 // Called by HAL once TX complete and delivers exact end of TX time stamp in LMIC.rxtime
mluis 0:62d1edcc13d1 1394 static void txDone (ostime_t delay, osjobcb_t func) {
mluis 0:62d1edcc13d1 1395 if( (LMIC.opmode & (OP_TRACK|OP_PINGABLE|OP_PINGINI)) == (OP_TRACK|OP_PINGABLE) ) {
mluis 1:d3b7bde3995c 1396 rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
mluis 1:d3b7bde3995c 1397 LMIC.opmode |= OP_PINGINI;
mluis 0:62d1edcc13d1 1398 }
mluis 0:62d1edcc13d1 1399 // Change RX frequency / rps (US only) before we increment txChnl
mluis 0:62d1edcc13d1 1400 setRx1Params();
mluis 0:62d1edcc13d1 1401 // LMIC.rxsyms carries the TX datarate (can be != LMIC.datarate [confirm retries etc.])
mluis 0:62d1edcc13d1 1402 // Setup receive - LMIC.rxtime is preloaded with 1.5 symbols offset to tune
mluis 0:62d1edcc13d1 1403 // into the middle of the 8 symbols preamble.
mluis 1:d3b7bde3995c 1404 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 1405 if( /* TX datarate */LMIC.rxsyms == DR_FSK ) {
mistery 5:30dcb702226b 1406 LMIC.rxtime = LMIC.txend + delay - PRERX_FSK*us2osticksRound(180);
mluis 1:d3b7bde3995c 1407 LMIC.rxsyms = RXLEN_FSK;
mluis 0:62d1edcc13d1 1408 }
mluis 0:62d1edcc13d1 1409 else
mluis 0:62d1edcc13d1 1410 #endif
mluis 0:62d1edcc13d1 1411 {
mluis 1:d3b7bde3995c 1412 LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dndr);
mluis 1:d3b7bde3995c 1413 LMIC.rxsyms = MINRX_SYMS;
mluis 0:62d1edcc13d1 1414 }
mluis 0:62d1edcc13d1 1415 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
mluis 0:62d1edcc13d1 1416 }
mluis 0:62d1edcc13d1 1417
mluis 0:62d1edcc13d1 1418
mluis 0:62d1edcc13d1 1419 // ======================================== Join frames
mluis 0:62d1edcc13d1 1420
mluis 0:62d1edcc13d1 1421
mluis 0:62d1edcc13d1 1422 static void onJoinFailed (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1423 // Notify app - must call LMIC_reset() to stop joining
mluis 0:62d1edcc13d1 1424 // otherwise join procedure continues.
mluis 0:62d1edcc13d1 1425 reportEvent(EV_JOIN_FAILED);
mluis 0:62d1edcc13d1 1426 }
mluis 0:62d1edcc13d1 1427
mluis 0:62d1edcc13d1 1428
mluis 0:62d1edcc13d1 1429 static bit_t processJoinAccept (void) {
mluis 0:62d1edcc13d1 1430 ASSERT(LMIC.txrxFlags != TXRX_DNW1 || LMIC.dataLen != 0);
mluis 0:62d1edcc13d1 1431 ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
mluis 0:62d1edcc13d1 1432
mluis 0:62d1edcc13d1 1433 if( LMIC.dataLen == 0 ) {
mluis 0:62d1edcc13d1 1434 nojoinframe:
dudmuck 2:974cafbfb159 1435 /* keep retrying -- if( (LMIC.opmode & OP_JOINING) == 0 ) {
mluis 1:d3b7bde3995c 1436 ASSERT((LMIC.opmode & OP_REJOIN) != 0);
mluis 1:d3b7bde3995c 1437 // REJOIN attempt for roaming
mluis 1:d3b7bde3995c 1438 LMIC.opmode &= ~(OP_REJOIN|OP_TXRXPEND);
mluis 1:d3b7bde3995c 1439 if( LMIC.rejoinCnt < 10 )
mluis 1:d3b7bde3995c 1440 LMIC.rejoinCnt++;
mluis 1:d3b7bde3995c 1441 reportEvent(EV_REJOIN_FAILED);
mluis 1:d3b7bde3995c 1442 return 1;
dudmuck 2:974cafbfb159 1443 }*/
mluis 1:d3b7bde3995c 1444 LMIC.opmode &= ~OP_TXRXPEND;
mluis 1:d3b7bde3995c 1445 ostime_t delay = nextJoinState();
mluis 1:d3b7bde3995c 1446 EV(devCond, DEBUG, (e_.reason = EV::devCond_t::NO_JACC,
mluis 1:d3b7bde3995c 1447 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1448 e_.info = LMIC.datarate|DR_PAGE,
mluis 1:d3b7bde3995c 1449 e_.info2 = osticks2ms(delay)));
mluis 1:d3b7bde3995c 1450 // Build next JOIN REQUEST with next engineUpdate call
mluis 1:d3b7bde3995c 1451 // Optionally, report join failed.
mluis 1:d3b7bde3995c 1452 // Both after a random/chosen amount of ticks.
mluis 1:d3b7bde3995c 1453 os_setTimedCallback(&LMIC.osjob, os_getTime()+delay,
mluis 1:d3b7bde3995c 1454 (delay&1) != 0
mluis 1:d3b7bde3995c 1455 ? FUNC_ADDR(onJoinFailed) // one JOIN iteration done and failed
mluis 1:d3b7bde3995c 1456 : FUNC_ADDR(runEngineUpdate)); // next step to be delayed
mluis 0:62d1edcc13d1 1457 return 1;
mluis 0:62d1edcc13d1 1458 }
mluis 0:62d1edcc13d1 1459 u1_t hdr = LMIC.frame[0];
mluis 0:62d1edcc13d1 1460 u1_t dlen = LMIC.dataLen;
mluis 0:62d1edcc13d1 1461 u4_t mic = os_rlsbf4(&LMIC.frame[dlen-4]); // safe before modified by encrypt!
mluis 0:62d1edcc13d1 1462 if( (dlen != LEN_JA && dlen != LEN_JAEXT)
mluis 1:d3b7bde3995c 1463 || (hdr & (HDR_FTYPE|HDR_MAJOR)) != (HDR_FTYPE_JACC|HDR_MAJOR_V1) ) {
mluis 1:d3b7bde3995c 1464 EV(specCond, ERR, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
mluis 1:d3b7bde3995c 1465 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1466 e_.info = dlen < 4 ? 0 : mic,
mluis 1:d3b7bde3995c 1467 e_.info2 = hdr + (dlen<<8)));
mluis 0:62d1edcc13d1 1468 badframe:
mluis 1:d3b7bde3995c 1469 if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
mluis 1:d3b7bde3995c 1470 return 0;
mluis 1:d3b7bde3995c 1471 goto nojoinframe;
mluis 0:62d1edcc13d1 1472 }
mluis 0:62d1edcc13d1 1473 aes_encrypt(LMIC.frame+1, dlen-1);
mluis 0:62d1edcc13d1 1474 if( !aes_verifyMic0(LMIC.frame, dlen-4) ) {
mluis 1:d3b7bde3995c 1475 EV(specCond, ERR, (e_.reason = EV::specCond_t::JOIN_BAD_MIC,
mluis 1:d3b7bde3995c 1476 e_.info = mic));
mluis 1:d3b7bde3995c 1477 goto badframe;
mluis 0:62d1edcc13d1 1478 }
mluis 0:62d1edcc13d1 1479
mluis 0:62d1edcc13d1 1480 u4_t addr = os_rlsbf4(LMIC.frame+OFF_JA_DEVADDR);
mluis 0:62d1edcc13d1 1481 LMIC.devaddr = addr;
mluis 1:d3b7bde3995c 1482 LMIC.netid = os_rlsbf4(&LMIC.frame[OFF_JA_NETID]) & 0xFFFFFF;
mluis 0:62d1edcc13d1 1483
mluis 1:d3b7bde3995c 1484 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 1485 initDefaultChannels(0);
mluis 0:62d1edcc13d1 1486 #endif
mluis 0:62d1edcc13d1 1487 if( dlen > LEN_JA ) {
mluis 1:d3b7bde3995c 1488 dlen = OFF_CFLIST;
mluis 1:d3b7bde3995c 1489 #if defined(CFG_eu868)
mluis 1:d3b7bde3995c 1490 u1_t chidx=3;
mluis 1:d3b7bde3995c 1491 #elif defined(CFG_us915)
mluis 1:d3b7bde3995c 1492 u1_t chidx=72;
mluis 0:62d1edcc13d1 1493 #endif
mluis 1:d3b7bde3995c 1494 for( ; chidx<8; chidx++, dlen+=3 )
mluis 3:519c71d29a06 1495 LMIC_setupChannel(chidx, convFreq(&LMIC.frame[dlen]), 0, -1);
mluis 0:62d1edcc13d1 1496 }
mluis 0:62d1edcc13d1 1497
mluis 0:62d1edcc13d1 1498 // already incremented when JOIN REQ got sent off
mluis 0:62d1edcc13d1 1499 aes_sessKeys(LMIC.devNonce-1, &LMIC.frame[OFF_JA_ARTNONCE], LMIC.nwkKey, LMIC.artKey);
mluis 1:d3b7bde3995c 1500 DO_DEVDB(LMIC.netid, netid);
mluis 1:d3b7bde3995c 1501 DO_DEVDB(LMIC.devaddr, devaddr);
mluis 1:d3b7bde3995c 1502 DO_DEVDB(LMIC.nwkKey, nwkkey);
mluis 1:d3b7bde3995c 1503 DO_DEVDB(LMIC.artKey, artkey);
mluis 0:62d1edcc13d1 1504
mluis 0:62d1edcc13d1 1505 EV(joininfo, INFO, (e_.arteui = MAIN::CDEV->getArtEui(),
mluis 1:d3b7bde3995c 1506 e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1507 e_.devaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1508 e_.oldaddr = oldaddr,
mluis 1:d3b7bde3995c 1509 e_.nonce = LMIC.devNonce-1,
mluis 1:d3b7bde3995c 1510 e_.mic = mic,
mluis 1:d3b7bde3995c 1511 e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
mluis 1:d3b7bde3995c 1512 ? EV::joininfo_t::REJOIN_ACCEPT
mluis 1:d3b7bde3995c 1513 : EV::joininfo_t::ACCEPT)));
mluis 0:62d1edcc13d1 1514
mluis 0:62d1edcc13d1 1515 ASSERT((LMIC.opmode & (OP_JOINING|OP_REJOIN))!=0);
mluis 0:62d1edcc13d1 1516 if( (LMIC.opmode & OP_REJOIN) != 0 ) {
mluis 1:d3b7bde3995c 1517 // Lower DR every try below current UP DR
mluis 1:d3b7bde3995c 1518 LMIC.datarate = lowerDR(LMIC.datarate, LMIC.rejoinCnt);
mluis 0:62d1edcc13d1 1519 }
mluis 0:62d1edcc13d1 1520 LMIC.opmode &= ~(OP_JOINING|OP_TRACK|OP_REJOIN|OP_TXRXPEND|OP_PINGINI) | OP_NEXTCHNL;
mluis 0:62d1edcc13d1 1521 stateJustJoined();
mluis 0:62d1edcc13d1 1522 reportEvent(EV_JOINED);
mluis 0:62d1edcc13d1 1523 return 1;
mluis 0:62d1edcc13d1 1524 }
mluis 0:62d1edcc13d1 1525
mluis 1:d3b7bde3995c 1526
mluis 1:d3b7bde3995c 1527 static void processRx2Jacc (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1528 if( LMIC.dataLen == 0 )
mluis 1:d3b7bde3995c 1529 LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
mluis 0:62d1edcc13d1 1530 processJoinAccept();
mluis 0:62d1edcc13d1 1531 }
mluis 0:62d1edcc13d1 1532
mluis 1:d3b7bde3995c 1533
mluis 1:d3b7bde3995c 1534 static void setupRx2Jacc (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1535 LMIC.osjob.func = FUNC_ADDR(processRx2Jacc);
mluis 1:d3b7bde3995c 1536 setupRx2();
mluis 1:d3b7bde3995c 1537 }
mluis 1:d3b7bde3995c 1538
mluis 1:d3b7bde3995c 1539
mluis 1:d3b7bde3995c 1540 static void processRx1Jacc (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1541 if( LMIC.dataLen == 0 || !processJoinAccept() )
mluis 1:d3b7bde3995c 1542 schedRx2(DELAY_JACC2_osticks, FUNC_ADDR(setupRx2Jacc));
mluis 1:d3b7bde3995c 1543 }
mluis 1:d3b7bde3995c 1544
mluis 1:d3b7bde3995c 1545
mluis 0:62d1edcc13d1 1546 static void setupRx1Jacc (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1547 setupRx1(FUNC_ADDR(processRx1Jacc));
mluis 0:62d1edcc13d1 1548 }
mluis 0:62d1edcc13d1 1549
mluis 0:62d1edcc13d1 1550
mluis 0:62d1edcc13d1 1551 static void jreqDone (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1552 txDone(DELAY_JACC1_osticks, FUNC_ADDR(setupRx1Jacc));
mluis 0:62d1edcc13d1 1553 }
mluis 0:62d1edcc13d1 1554
mluis 0:62d1edcc13d1 1555 // ======================================== Data frames
mluis 0:62d1edcc13d1 1556
mluis 0:62d1edcc13d1 1557 // Fwd decl.
mluis 0:62d1edcc13d1 1558 static bit_t processDnData(void);
mluis 0:62d1edcc13d1 1559
mluis 1:d3b7bde3995c 1560 static void processRx2DnDataDelay (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1561 processDnData();
mluis 1:d3b7bde3995c 1562 }
mluis 1:d3b7bde3995c 1563
mluis 0:62d1edcc13d1 1564 static void processRx2DnData (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1565 if( LMIC.dataLen == 0 ) {
mluis 1:d3b7bde3995c 1566 LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
mluis 1:d3b7bde3995c 1567 // Delay callback processing to avoid up TX while gateway is txing our missed frame!
mluis 1:d3b7bde3995c 1568 // Since DNW2 uses SF12 by default we wait 3 secs.
mluis 1:d3b7bde3995c 1569 os_setTimedCallback(&LMIC.osjob,
mluis 1:d3b7bde3995c 1570 (os_getTime() + DNW2_SAFETY_ZONE + rndDelay(2)),
mluis 1:d3b7bde3995c 1571 processRx2DnDataDelay);
mluis 1:d3b7bde3995c 1572 return;
mluis 1:d3b7bde3995c 1573 }
mluis 0:62d1edcc13d1 1574 processDnData();
mluis 0:62d1edcc13d1 1575 }
mluis 0:62d1edcc13d1 1576
mluis 0:62d1edcc13d1 1577
mluis 0:62d1edcc13d1 1578 static void setupRx2DnData (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1579 LMIC.osjob.func = FUNC_ADDR(processRx2DnData);
mluis 0:62d1edcc13d1 1580 setupRx2();
mluis 0:62d1edcc13d1 1581 }
mluis 0:62d1edcc13d1 1582
mluis 0:62d1edcc13d1 1583
mluis 0:62d1edcc13d1 1584 static void processRx1DnData (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1585 if( LMIC.dataLen == 0 || !processDnData() )
mluis 1:d3b7bde3995c 1586 schedRx2(DELAY_DNW2_osticks, FUNC_ADDR(setupRx2DnData));
mluis 0:62d1edcc13d1 1587 }
mluis 0:62d1edcc13d1 1588
mluis 0:62d1edcc13d1 1589
mluis 0:62d1edcc13d1 1590 static void setupRx1DnData (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1591 setupRx1(FUNC_ADDR(processRx1DnData));
mluis 0:62d1edcc13d1 1592 }
mluis 0:62d1edcc13d1 1593
mluis 0:62d1edcc13d1 1594
mluis 0:62d1edcc13d1 1595 static void updataDone (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1596 txDone(DELAY_DNW1_osticks, FUNC_ADDR(setupRx1DnData));
mluis 0:62d1edcc13d1 1597 }
mluis 0:62d1edcc13d1 1598
mluis 0:62d1edcc13d1 1599 // ========================================
mluis 0:62d1edcc13d1 1600
mluis 0:62d1edcc13d1 1601
mluis 0:62d1edcc13d1 1602 static void buildDataFrame (void) {
mluis 0:62d1edcc13d1 1603 bit_t txdata = ((LMIC.opmode & (OP_TXDATA|OP_POLL)) != OP_POLL);
mluis 0:62d1edcc13d1 1604 u1_t dlen = txdata ? LMIC.pendTxLen : 0;
mluis 0:62d1edcc13d1 1605
mluis 0:62d1edcc13d1 1606 // Piggyback MAC options
mluis 0:62d1edcc13d1 1607 // Prioritize by importance
mluis 0:62d1edcc13d1 1608 int end = OFF_DAT_OPTS;
mluis 0:62d1edcc13d1 1609 if( (LMIC.opmode & (OP_TRACK|OP_PINGABLE)) == (OP_TRACK|OP_PINGABLE) ) {
mluis 1:d3b7bde3995c 1610 // Indicate pingability in every UP frame
mluis 1:d3b7bde3995c 1611 LMIC.frame[end] = MCMD_PING_IND;
mluis 1:d3b7bde3995c 1612 LMIC.frame[end+1] = LMIC.ping.dr | (LMIC.ping.intvExp<<4);
mluis 1:d3b7bde3995c 1613 end += 2;
mluis 0:62d1edcc13d1 1614 }
mluis 0:62d1edcc13d1 1615 if( LMIC.dutyCapAns ) {
mluis 1:d3b7bde3995c 1616 LMIC.frame[end] = MCMD_DCAP_ANS;
mluis 1:d3b7bde3995c 1617 end += 1;
mluis 1:d3b7bde3995c 1618 LMIC.dutyCapAns = 0;
mluis 0:62d1edcc13d1 1619 }
mluis 0:62d1edcc13d1 1620 if( LMIC.dn2Ans ) {
mluis 1:d3b7bde3995c 1621 LMIC.frame[end+0] = MCMD_DN2P_ANS;
mluis 1:d3b7bde3995c 1622 LMIC.frame[end+1] = LMIC.dn2Ans & ~MCMD_DN2P_ANS_RFU;
mluis 1:d3b7bde3995c 1623 end += 2;
mluis 1:d3b7bde3995c 1624 LMIC.dn2Ans = 0;
mluis 0:62d1edcc13d1 1625 }
mluis 0:62d1edcc13d1 1626 if( LMIC.devsAns ) { // answer to device status
mluis 1:d3b7bde3995c 1627 LMIC.frame[end+0] = MCMD_DEVS_ANS;
mluis 1:d3b7bde3995c 1628 LMIC.frame[end+1] = LMIC.margin;
mluis 1:d3b7bde3995c 1629 LMIC.frame[end+2] = os_getBattLevel();
mluis 1:d3b7bde3995c 1630 end += 3;
mluis 1:d3b7bde3995c 1631 LMIC.devsAns = 0;
mluis 0:62d1edcc13d1 1632 }
mluis 0:62d1edcc13d1 1633 if( LMIC.ladrAns ) { // answer to ADR change
mluis 1:d3b7bde3995c 1634 LMIC.frame[end+0] = MCMD_LADR_ANS;
mluis 1:d3b7bde3995c 1635 LMIC.frame[end+1] = LMIC.ladrAns & ~MCMD_LADR_ANS_RFU;
mluis 1:d3b7bde3995c 1636 end += 2;
mluis 1:d3b7bde3995c 1637 LMIC.ladrAns = 0;
mluis 0:62d1edcc13d1 1638 }
mluis 0:62d1edcc13d1 1639 if( LMIC.bcninfoTries > 0 ) {
mluis 1:d3b7bde3995c 1640 LMIC.frame[end] = MCMD_BCNI_REQ;
mluis 1:d3b7bde3995c 1641 end += 1;
mluis 0:62d1edcc13d1 1642 }
mluis 0:62d1edcc13d1 1643 if( LMIC.adrChanged ) {
mluis 1:d3b7bde3995c 1644 if( LMIC.adrAckReq < 0 )
mluis 1:d3b7bde3995c 1645 LMIC.adrAckReq = 0;
mluis 1:d3b7bde3995c 1646 LMIC.adrChanged = 0;
mluis 0:62d1edcc13d1 1647 }
mluis 0:62d1edcc13d1 1648 if( LMIC.pingSetAns != 0 ) {
mluis 1:d3b7bde3995c 1649 LMIC.frame[end+0] = MCMD_PING_ANS;
mluis 1:d3b7bde3995c 1650 LMIC.frame[end+1] = LMIC.pingSetAns & ~MCMD_PING_ANS_RFU;
mluis 1:d3b7bde3995c 1651 end += 2;
mluis 1:d3b7bde3995c 1652 LMIC.pingSetAns = 0;
mluis 0:62d1edcc13d1 1653 }
mluis 0:62d1edcc13d1 1654 if( LMIC.snchAns ) {
mluis 1:d3b7bde3995c 1655 LMIC.frame[end+0] = MCMD_SNCH_ANS;
mluis 1:d3b7bde3995c 1656 LMIC.frame[end+1] = LMIC.snchAns & ~MCMD_SNCH_ANS_RFU;
mluis 1:d3b7bde3995c 1657 end += 2;
mluis 1:d3b7bde3995c 1658 LMIC.snchAns = 0;
mluis 0:62d1edcc13d1 1659 }
mluis 0:62d1edcc13d1 1660 ASSERT(end <= OFF_DAT_OPTS+16);
mluis 0:62d1edcc13d1 1661
mluis 0:62d1edcc13d1 1662 u1_t flen = end + (txdata ? 5+dlen : 4);
mluis 0:62d1edcc13d1 1663 if( flen > MAX_LEN_FRAME ) {
mluis 1:d3b7bde3995c 1664 // Options and payload too big - delay payload
mluis 1:d3b7bde3995c 1665 txdata = 0;
mluis 1:d3b7bde3995c 1666 flen = end+4;
mluis 0:62d1edcc13d1 1667 }
mluis 0:62d1edcc13d1 1668 LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DAUP | HDR_MAJOR_V1;
mluis 0:62d1edcc13d1 1669 LMIC.frame[OFF_DAT_FCT] = (LMIC.dnConf | LMIC.adrEnabled
mluis 1:d3b7bde3995c 1670 | (LMIC.adrAckReq >= 0 ? FCT_ADRARQ : 0)
mluis 1:d3b7bde3995c 1671 | (end-OFF_DAT_OPTS));
mluis 0:62d1edcc13d1 1672 os_wlsbf4(LMIC.frame+OFF_DAT_ADDR, LMIC.devaddr);
mluis 0:62d1edcc13d1 1673
mluis 0:62d1edcc13d1 1674 if( LMIC.txCnt == 0 ) {
mluis 1:d3b7bde3995c 1675 LMIC.seqnoUp += 1;
mluis 1:d3b7bde3995c 1676 DO_DEVDB(LMIC.seqnoUp,seqnoUp);
mluis 0:62d1edcc13d1 1677 } else {
mluis 1:d3b7bde3995c 1678 EV(devCond, INFO, (e_.reason = EV::devCond_t::RE_TX,
mluis 1:d3b7bde3995c 1679 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1680 e_.info = LMIC.seqnoUp-1,
mluis 1:d3b7bde3995c 1681 e_.info2 = ((LMIC.txCnt+1) |
mluis 1:d3b7bde3995c 1682 (DRADJUST[LMIC.txCnt+1] << 8) |
mluis 1:d3b7bde3995c 1683 ((LMIC.datarate|DR_PAGE)<<16))));
mluis 0:62d1edcc13d1 1684 }
mluis 0:62d1edcc13d1 1685 os_wlsbf2(LMIC.frame+OFF_DAT_SEQNO, LMIC.seqnoUp-1);
mluis 0:62d1edcc13d1 1686
mluis 0:62d1edcc13d1 1687 // Clear pending DN confirmation
mluis 0:62d1edcc13d1 1688 LMIC.dnConf = 0;
mluis 0:62d1edcc13d1 1689
mluis 0:62d1edcc13d1 1690 if( txdata ) {
mluis 1:d3b7bde3995c 1691 if( LMIC.pendTxConf ) {
mluis 1:d3b7bde3995c 1692 // Confirmed only makes sense if we have a payload (or at least a port)
mluis 1:d3b7bde3995c 1693 LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DCUP | HDR_MAJOR_V1;
mluis 1:d3b7bde3995c 1694 if( LMIC.txCnt == 0 ) LMIC.txCnt = 1;
mluis 1:d3b7bde3995c 1695 }
mluis 1:d3b7bde3995c 1696 LMIC.frame[end] = LMIC.pendTxPort;
mluis 1:d3b7bde3995c 1697 os_copyMem(LMIC.frame+end+1, LMIC.pendTxData, dlen);
mluis 1:d3b7bde3995c 1698 aes_cipher(LMIC.pendTxPort==0 ? LMIC.nwkKey : LMIC.artKey,
mluis 1:d3b7bde3995c 1699 LMIC.devaddr, LMIC.seqnoUp-1,
mluis 1:d3b7bde3995c 1700 /*up*/0, LMIC.frame+end+1, dlen);
mluis 0:62d1edcc13d1 1701 }
mluis 0:62d1edcc13d1 1702 aes_appendMic(LMIC.nwkKey, LMIC.devaddr, LMIC.seqnoUp-1, /*up*/0, LMIC.frame, flen-4);
mluis 0:62d1edcc13d1 1703
mluis 0:62d1edcc13d1 1704 EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1705 e_.devaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1706 e_.seqno = LMIC.seqnoUp-1,
mluis 1:d3b7bde3995c 1707 e_.flags = (LMIC.pendTxPort < 0 ? EV::dfinfo_t::NOPORT : EV::dfinfo_t::NOP),
mluis 1:d3b7bde3995c 1708 e_.mic = Base::lsbf4(&LMIC.frame[flen-4]),
mluis 1:d3b7bde3995c 1709 e_.hdr = LMIC.frame[LORA::OFF_DAT_HDR],
mluis 1:d3b7bde3995c 1710 e_.fct = LMIC.frame[LORA::OFF_DAT_FCT],
mluis 1:d3b7bde3995c 1711 e_.port = LMIC.pendTxPort,
mluis 1:d3b7bde3995c 1712 e_.plen = txdata ? dlen : 0,
mluis 1:d3b7bde3995c 1713 e_.opts.length = end-LORA::OFF_DAT_OPTS,
mluis 1:d3b7bde3995c 1714 memcpy(&e_.opts[0], LMIC.frame+LORA::OFF_DAT_OPTS, end-LORA::OFF_DAT_OPTS)));
mluis 0:62d1edcc13d1 1715 LMIC.dataLen = flen;
mluis 0:62d1edcc13d1 1716 }
mluis 0:62d1edcc13d1 1717
mluis 0:62d1edcc13d1 1718
mluis 0:62d1edcc13d1 1719 // Callback from HAL during scan mode or when job timer expires.
mluis 0:62d1edcc13d1 1720 static void onBcnRx (xref2osjob_t job) {
mluis 0:62d1edcc13d1 1721 // If we arrive via job timer make sure to put radio to rest.
mluis 0:62d1edcc13d1 1722 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 1723 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 1724 if( LMIC.dataLen == 0 ) {
mluis 1:d3b7bde3995c 1725 // Nothing received - timeout
mluis 1:d3b7bde3995c 1726 LMIC.opmode &= ~(OP_SCAN | OP_TRACK);
mluis 1:d3b7bde3995c 1727 reportEvent(EV_SCAN_TIMEOUT);
mluis 1:d3b7bde3995c 1728 return;
mluis 0:62d1edcc13d1 1729 }
mluis 0:62d1edcc13d1 1730 if( decodeBeacon() <= 0 ) {
mluis 1:d3b7bde3995c 1731 // Something is wrong with the beacon - continue scan
mluis 1:d3b7bde3995c 1732 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 1733 os_radio(RADIO_RXON);
mluis 1:d3b7bde3995c 1734 os_setTimedCallback(&LMIC.osjob, LMIC.bcninfo.txtime, FUNC_ADDR(onBcnRx));
mluis 1:d3b7bde3995c 1735 return;
mluis 0:62d1edcc13d1 1736 }
mluis 0:62d1edcc13d1 1737 // Found our 1st beacon
mluis 0:62d1edcc13d1 1738 // We don't have a previous beacon to calc some drift - assume
mluis 0:62d1edcc13d1 1739 // an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
mluis 0:62d1edcc13d1 1740 calcBcnRxWindowFromMillis(13,1);
mluis 0:62d1edcc13d1 1741 LMIC.opmode &= ~OP_SCAN; // turn SCAN off
mluis 0:62d1edcc13d1 1742 LMIC.opmode |= OP_TRACK; // auto enable tracking
mluis 0:62d1edcc13d1 1743 reportEvent(EV_BEACON_FOUND); // can be disabled in callback
mluis 0:62d1edcc13d1 1744 }
mluis 0:62d1edcc13d1 1745
mluis 0:62d1edcc13d1 1746
mluis 0:62d1edcc13d1 1747 // Enable receiver to listen to incoming beacons
mluis 0:62d1edcc13d1 1748 // netid defines when scan stops (any or specific beacon)
mluis 0:62d1edcc13d1 1749 // This mode ends with events: EV_SCAN_TIMEOUT/EV_SCAN_BEACON
mluis 0:62d1edcc13d1 1750 // Implicitely cancels any pending TX/RX transaction.
mluis 0:62d1edcc13d1 1751 // Also cancels an onpoing joining procedure.
mluis 0:62d1edcc13d1 1752 static void startScan (void) {
mluis 0:62d1edcc13d1 1753 ASSERT(LMIC.devaddr!=0 && (LMIC.opmode & OP_JOINING)==0);
mluis 0:62d1edcc13d1 1754 if( (LMIC.opmode & OP_SHUTDOWN) != 0 )
mluis 1:d3b7bde3995c 1755 return;
mluis 0:62d1edcc13d1 1756 // Cancel onging TX/RX transaction
mluis 0:62d1edcc13d1 1757 LMIC.txCnt = LMIC.dnConf = LMIC.bcninfo.flags = 0;
mluis 0:62d1edcc13d1 1758 LMIC.opmode = (LMIC.opmode | OP_SCAN) & ~(OP_TXRXPEND);
mluis 0:62d1edcc13d1 1759 setBcnRxParams();
mluis 0:62d1edcc13d1 1760 LMIC.rxtime = LMIC.bcninfo.txtime = os_getTime() + sec2osticks(BCN_INTV_sec+1);
mluis 0:62d1edcc13d1 1761 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime, FUNC_ADDR(onBcnRx));
mluis 0:62d1edcc13d1 1762 os_radio(RADIO_RXON);
mluis 0:62d1edcc13d1 1763 }
mluis 0:62d1edcc13d1 1764
mluis 0:62d1edcc13d1 1765
mluis 0:62d1edcc13d1 1766 bit_t LMIC_enableTracking (u1_t tryBcnInfo) {
mluis 0:62d1edcc13d1 1767 if( (LMIC.opmode & (OP_SCAN|OP_TRACK|OP_SHUTDOWN)) != 0 )
mluis 1:d3b7bde3995c 1768 return 0; // already in progress or failed to enable
mluis 0:62d1edcc13d1 1769 // If BCN info requested from NWK then app has to take are
mluis 0:62d1edcc13d1 1770 // of sending data up so that MCMD_BCNI_REQ can be attached.
mluis 0:62d1edcc13d1 1771 if( (LMIC.bcninfoTries = tryBcnInfo) == 0 )
mluis 1:d3b7bde3995c 1772 startScan();
mluis 0:62d1edcc13d1 1773 return 1; // enabled
mluis 0:62d1edcc13d1 1774 }
mluis 0:62d1edcc13d1 1775
mluis 0:62d1edcc13d1 1776
mluis 0:62d1edcc13d1 1777 void LMIC_disableTracking (void) {
mluis 0:62d1edcc13d1 1778 LMIC.opmode &= ~(OP_SCAN|OP_TRACK);
mluis 0:62d1edcc13d1 1779 LMIC.bcninfoTries = 0;
mluis 0:62d1edcc13d1 1780 engineUpdate();
mluis 0:62d1edcc13d1 1781 }
mluis 0:62d1edcc13d1 1782
mluis 0:62d1edcc13d1 1783
mluis 0:62d1edcc13d1 1784 // ================================================================================
mluis 0:62d1edcc13d1 1785 //
mluis 0:62d1edcc13d1 1786 // Join stuff
mluis 0:62d1edcc13d1 1787 //
mluis 0:62d1edcc13d1 1788 // ================================================================================
mluis 0:62d1edcc13d1 1789
mluis 0:62d1edcc13d1 1790 static void buildJoinRequest (u1_t ftype) {
mluis 0:62d1edcc13d1 1791 // Do not use pendTxData since we might have a pending
mluis 0:62d1edcc13d1 1792 // user level frame in there. Use RX holding area instead.
mluis 0:62d1edcc13d1 1793 xref2u1_t d = LMIC.frame;
mluis 0:62d1edcc13d1 1794 d[OFF_JR_HDR] = ftype;
mluis 0:62d1edcc13d1 1795 os_getArtEui(d + OFF_JR_ARTEUI);
mluis 0:62d1edcc13d1 1796 os_getDevEui(d + OFF_JR_DEVEUI);
mluis 0:62d1edcc13d1 1797 os_wlsbf2(d + OFF_JR_DEVNONCE, LMIC.devNonce);
mluis 0:62d1edcc13d1 1798 aes_appendMic0(d, OFF_JR_MIC);
mluis 0:62d1edcc13d1 1799
mluis 0:62d1edcc13d1 1800 EV(joininfo,INFO,(e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1801 e_.arteui = MAIN::CDEV->getArtEui(),
mluis 1:d3b7bde3995c 1802 e_.nonce = LMIC.devNonce,
mluis 1:d3b7bde3995c 1803 e_.oldaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1804 e_.mic = Base::lsbf4(&d[LORA::OFF_JR_MIC]),
mluis 1:d3b7bde3995c 1805 e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
mluis 1:d3b7bde3995c 1806 ? EV::joininfo_t::REJOIN_REQUEST
mluis 1:d3b7bde3995c 1807 : EV::joininfo_t::REQUEST)));
mluis 0:62d1edcc13d1 1808 LMIC.dataLen = LEN_JR;
mluis 0:62d1edcc13d1 1809 LMIC.devNonce++;
mluis 1:d3b7bde3995c 1810 DO_DEVDB(LMIC.devNonce,devNonce);
mluis 0:62d1edcc13d1 1811 }
mluis 0:62d1edcc13d1 1812
mluis 0:62d1edcc13d1 1813 static void startJoining (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1814 reportEvent(EV_JOINING);
mluis 0:62d1edcc13d1 1815 }
mluis 0:62d1edcc13d1 1816
mluis 0:62d1edcc13d1 1817 // Start join procedure if not already joined.
mluis 0:62d1edcc13d1 1818 bit_t LMIC_startJoining (void) {
mluis 0:62d1edcc13d1 1819 if( LMIC.devaddr == 0 ) {
mluis 1:d3b7bde3995c 1820 // There should be no TX/RX going on
mluis 1:d3b7bde3995c 1821 ASSERT((LMIC.opmode & (OP_POLL|OP_TXRXPEND)) == 0);
mluis 1:d3b7bde3995c 1822 // Lift any previous duty limitation
mluis 1:d3b7bde3995c 1823 LMIC.globalDutyRate = 0;
mluis 1:d3b7bde3995c 1824 // Cancel scanning
mluis 1:d3b7bde3995c 1825 LMIC.opmode &= ~(OP_SCAN|OP_REJOIN|OP_LINKDEAD|OP_NEXTCHNL);
mluis 1:d3b7bde3995c 1826 // Setup state
mluis 1:d3b7bde3995c 1827 LMIC.rejoinCnt = LMIC.txCnt = LMIC.pendTxConf = 0;
mluis 1:d3b7bde3995c 1828 initJoinLoop();
mluis 1:d3b7bde3995c 1829 LMIC.opmode |= OP_JOINING;
mluis 1:d3b7bde3995c 1830 // reportEvent will call engineUpdate which then starts sending JOIN REQUESTS
mluis 1:d3b7bde3995c 1831 os_setCallback(&LMIC.osjob, FUNC_ADDR(startJoining));
mluis 1:d3b7bde3995c 1832 return 1;
mluis 0:62d1edcc13d1 1833 }
mluis 1:d3b7bde3995c 1834 return 0; // already joined
mluis 0:62d1edcc13d1 1835 }
mluis 0:62d1edcc13d1 1836
mluis 0:62d1edcc13d1 1837
mluis 0:62d1edcc13d1 1838 // ================================================================================
mluis 0:62d1edcc13d1 1839 //
mluis 0:62d1edcc13d1 1840 //
mluis 0:62d1edcc13d1 1841 //
mluis 0:62d1edcc13d1 1842 // ================================================================================
mluis 0:62d1edcc13d1 1843
mluis 0:62d1edcc13d1 1844 static void processPingRx (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1845 if( LMIC.dataLen != 0 ) {
mluis 1:d3b7bde3995c 1846 LMIC.txrxFlags = TXRX_PING;
mluis 1:d3b7bde3995c 1847 if( decodeFrame() ) {
mluis 1:d3b7bde3995c 1848 reportEvent(EV_RXCOMPLETE);
mluis 1:d3b7bde3995c 1849 return;
mluis 1:d3b7bde3995c 1850 }
mluis 0:62d1edcc13d1 1851 }
mluis 0:62d1edcc13d1 1852 // Pick next ping slot
mluis 0:62d1edcc13d1 1853 engineUpdate();
mluis 0:62d1edcc13d1 1854 }
mluis 0:62d1edcc13d1 1855
mluis 0:62d1edcc13d1 1856
mluis 0:62d1edcc13d1 1857 static bit_t processDnData (void) {
mluis 0:62d1edcc13d1 1858 ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
mluis 0:62d1edcc13d1 1859
mluis 0:62d1edcc13d1 1860 if( LMIC.dataLen == 0 ) {
mluis 0:62d1edcc13d1 1861 norx:
mluis 1:d3b7bde3995c 1862 if( LMIC.txCnt != 0 ) {
mluis 1:d3b7bde3995c 1863 if( LMIC.txCnt < TXCONF_ATTEMPTS ) {
mluis 1:d3b7bde3995c 1864 LMIC.txCnt += 1;
mluis 1:d3b7bde3995c 1865 setDrTxpow(DRCHG_NOACK, lowerDR(LMIC.datarate, DRADJUST[LMIC.txCnt]), KEEP_TXPOW);
mluis 1:d3b7bde3995c 1866 // Schedule another retransmission
mluis 1:d3b7bde3995c 1867 txDelay(LMIC.rxtime, RETRY_PERIOD_secs);
mluis 1:d3b7bde3995c 1868 LMIC.opmode &= ~OP_TXRXPEND;
mluis 1:d3b7bde3995c 1869 engineUpdate();
mluis 1:d3b7bde3995c 1870 return 1;
mluis 1:d3b7bde3995c 1871 }
mluis 1:d3b7bde3995c 1872 LMIC.txrxFlags = TXRX_NACK | TXRX_NOPORT;
mluis 1:d3b7bde3995c 1873 } else {
mluis 1:d3b7bde3995c 1874 // Nothing received - implies no port
mluis 1:d3b7bde3995c 1875 LMIC.txrxFlags = TXRX_NOPORT;
mluis 0:62d1edcc13d1 1876 }
mluis 1:d3b7bde3995c 1877 if( LMIC.adrAckReq != LINK_CHECK_OFF )
mluis 1:d3b7bde3995c 1878 LMIC.adrAckReq += 1;
mluis 1:d3b7bde3995c 1879 LMIC.dataBeg = LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1880 txcomplete:
mluis 1:d3b7bde3995c 1881 LMIC.opmode &= ~(OP_TXDATA|OP_TXRXPEND);
mluis 1:d3b7bde3995c 1882 if( (LMIC.txrxFlags & (TXRX_DNW1|TXRX_DNW2|TXRX_PING)) != 0 && (LMIC.opmode & OP_LINKDEAD) != 0 ) {
mluis 1:d3b7bde3995c 1883 LMIC.opmode &= ~OP_LINKDEAD;
mluis 1:d3b7bde3995c 1884 reportEvent(EV_LINK_ALIVE);
mluis 1:d3b7bde3995c 1885 }
mluis 1:d3b7bde3995c 1886 reportEvent(EV_TXCOMPLETE);
mluis 1:d3b7bde3995c 1887 // If we haven't heard from NWK in a while although we asked for a sign
mluis 1:d3b7bde3995c 1888 // assume link is dead - notify application and keep going
mluis 1:d3b7bde3995c 1889 if( LMIC.adrAckReq > LINK_CHECK_DEAD ) {
mluis 1:d3b7bde3995c 1890 // We haven't heard from NWK for some time although we
mluis 1:d3b7bde3995c 1891 // asked for a response for some time - assume we're disconnected. Lower DR one notch.
mluis 1:d3b7bde3995c 1892 EV(devCond, ERR, (e_.reason = EV::devCond_t::LINK_DEAD,
mluis 1:d3b7bde3995c 1893 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1894 e_.info = LMIC.adrAckReq));
mluis 1:d3b7bde3995c 1895 setDrTxpow(DRCHG_NOADRACK, decDR((dr_t)LMIC.datarate), KEEP_TXPOW);
mluis 1:d3b7bde3995c 1896 LMIC.adrAckReq = LINK_CHECK_CONT;
mluis 0:62d1edcc13d1 1897 LMIC.opmode |= OP_REJOIN|OP_LINKDEAD;
mluis 1:d3b7bde3995c 1898 reportEvent(EV_LINK_DEAD);
mluis 0:62d1edcc13d1 1899 }
mluis 1:d3b7bde3995c 1900 // If this falls to zero the NWK did not answer our MCMD_BCNI_REQ commands - try full scan
mluis 1:d3b7bde3995c 1901 if( LMIC.bcninfoTries > 0 ) {
mluis 1:d3b7bde3995c 1902 if( (LMIC.opmode & OP_TRACK) != 0 ) {
mluis 1:d3b7bde3995c 1903 reportEvent(EV_BEACON_FOUND);
mluis 1:d3b7bde3995c 1904 LMIC.bcninfoTries = 0;
mluis 1:d3b7bde3995c 1905 }
mluis 1:d3b7bde3995c 1906 else if( --LMIC.bcninfoTries == 0 ) {
mluis 1:d3b7bde3995c 1907 startScan(); // NWK did not answer - try scan
mluis 1:d3b7bde3995c 1908 }
mluis 0:62d1edcc13d1 1909 }
mluis 1:d3b7bde3995c 1910 return 1;
mluis 0:62d1edcc13d1 1911 }
mluis 0:62d1edcc13d1 1912 if( !decodeFrame() ) {
mluis 1:d3b7bde3995c 1913 if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
mluis 1:d3b7bde3995c 1914 return 0;
mluis 1:d3b7bde3995c 1915 goto norx;
mluis 0:62d1edcc13d1 1916 }
mluis 0:62d1edcc13d1 1917 goto txcomplete;
mluis 0:62d1edcc13d1 1918 }
mluis 0:62d1edcc13d1 1919
mluis 0:62d1edcc13d1 1920
mluis 0:62d1edcc13d1 1921 static void processBeacon (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1922 ostime_t lasttx = LMIC.bcninfo.txtime; // save here - decodeBeacon might overwrite
mluis 0:62d1edcc13d1 1923 u1_t flags = LMIC.bcninfo.flags;
mluis 0:62d1edcc13d1 1924 ev_t ev;
mluis 0:62d1edcc13d1 1925
mluis 0:62d1edcc13d1 1926 if( LMIC.dataLen != 0 && decodeBeacon() >= 1 ) {
mluis 1:d3b7bde3995c 1927 ev = EV_BEACON_TRACKED;
mluis 1:d3b7bde3995c 1928 if( (flags & (BCN_PARTIAL|BCN_FULL)) == 0 ) {
mluis 1:d3b7bde3995c 1929 // We don't have a previous beacon to calc some drift - assume
mluis 1:d3b7bde3995c 1930 // an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
mluis 1:d3b7bde3995c 1931 calcBcnRxWindowFromMillis(13,0);
mluis 1:d3b7bde3995c 1932 goto rev;
mluis 1:d3b7bde3995c 1933 }
mluis 1:d3b7bde3995c 1934 // We have a previous BEACON to calculate some drift
mluis 1:d3b7bde3995c 1935 s2_t drift = BCN_INTV_osticks - (LMIC.bcninfo.txtime - lasttx);
mluis 1:d3b7bde3995c 1936 if( LMIC.missedBcns > 0 ) {
mluis 1:d3b7bde3995c 1937 drift = LMIC.drift + (drift - LMIC.drift) / (LMIC.missedBcns+1);
mluis 1:d3b7bde3995c 1938 }
mluis 1:d3b7bde3995c 1939 if( (LMIC.bcninfo.flags & BCN_NODRIFT) == 0 ) {
mluis 1:d3b7bde3995c 1940 s2_t diff = LMIC.drift - drift;
mluis 1:d3b7bde3995c 1941 if( diff < 0 ) diff = -diff;
mluis 1:d3b7bde3995c 1942 LMIC.lastDriftDiff = diff;
mluis 1:d3b7bde3995c 1943 if( LMIC.maxDriftDiff < diff )
mluis 1:d3b7bde3995c 1944 LMIC.maxDriftDiff = diff;
mluis 1:d3b7bde3995c 1945 LMIC.bcninfo.flags &= ~BCN_NODDIFF;
mluis 1:d3b7bde3995c 1946 }
mluis 1:d3b7bde3995c 1947 LMIC.drift = drift;
mluis 1:d3b7bde3995c 1948 LMIC.missedBcns = LMIC.rejoinCnt = 0;
mluis 1:d3b7bde3995c 1949 LMIC.bcninfo.flags &= ~BCN_NODRIFT;
mluis 1:d3b7bde3995c 1950 EV(devCond,INFO,(e_.reason = EV::devCond_t::CLOCK_DRIFT,
mluis 1:d3b7bde3995c 1951 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1952 e_.info = drift,
mluis 1:d3b7bde3995c 1953 e_.info2 = /*occasion BEACON*/0));
mluis 1:d3b7bde3995c 1954 ASSERT((LMIC.bcninfo.flags & (BCN_PARTIAL|BCN_FULL)) != 0);
mluis 0:62d1edcc13d1 1955 } else {
mluis 1:d3b7bde3995c 1956 ev = EV_BEACON_MISSED;
mluis 1:d3b7bde3995c 1957 LMIC.bcninfo.txtime += BCN_INTV_osticks - LMIC.drift;
mluis 1:d3b7bde3995c 1958 LMIC.bcninfo.time += BCN_INTV_sec;
mluis 1:d3b7bde3995c 1959 LMIC.missedBcns++;
mluis 1:d3b7bde3995c 1960 // Delay any possible TX after surmised beacon - it's there although we missed it
mluis 1:d3b7bde3995c 1961 txDelay(LMIC.bcninfo.txtime + BCN_RESERVE_osticks, 4);
mluis 1:d3b7bde3995c 1962 if( LMIC.missedBcns > MAX_MISSED_BCNS )
mluis 1:d3b7bde3995c 1963 LMIC.opmode |= OP_REJOIN; // try if we can roam to another network
mluis 1:d3b7bde3995c 1964 if( LMIC.bcnRxsyms > MAX_RXSYMS ) {
mluis 1:d3b7bde3995c 1965 LMIC.opmode &= ~(OP_TRACK|OP_PINGABLE|OP_PINGINI|OP_REJOIN);
mluis 1:d3b7bde3995c 1966 reportEvent(EV_LOST_TSYNC);
mluis 1:d3b7bde3995c 1967 return;
mluis 1:d3b7bde3995c 1968 }
mluis 0:62d1edcc13d1 1969 }
mluis 0:62d1edcc13d1 1970 LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - calcRxWindow(0,DR_BCN);
mluis 0:62d1edcc13d1 1971 LMIC.bcnRxsyms = LMIC.rxsyms;
mluis 0:62d1edcc13d1 1972 rev:
dudmuck 2:974cafbfb159 1973 #ifdef CFG_us915
mluis 1:d3b7bde3995c 1974 LMIC.bcnChnl = (LMIC.bcnChnl+1) & 7;
mluis 1:d3b7bde3995c 1975 #endif
mluis 0:62d1edcc13d1 1976 if( (LMIC.opmode & OP_PINGINI) != 0 )
mluis 1:d3b7bde3995c 1977 rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
mluis 0:62d1edcc13d1 1978 reportEvent(ev);
mluis 0:62d1edcc13d1 1979 }
mluis 0:62d1edcc13d1 1980
mluis 0:62d1edcc13d1 1981
mluis 0:62d1edcc13d1 1982 static void startRxBcn (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1983 LMIC.osjob.func = FUNC_ADDR(processBeacon);
mluis 0:62d1edcc13d1 1984 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 1985 }
mluis 0:62d1edcc13d1 1986
mluis 0:62d1edcc13d1 1987
mluis 0:62d1edcc13d1 1988 static void startRxPing (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1989 LMIC.osjob.func = FUNC_ADDR(processPingRx);
mluis 0:62d1edcc13d1 1990 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 1991 }
mluis 0:62d1edcc13d1 1992
mluis 0:62d1edcc13d1 1993
mluis 0:62d1edcc13d1 1994 // Decide what to do next for the MAC layer of a device
mluis 0:62d1edcc13d1 1995 static void engineUpdate (void) {
mluis 0:62d1edcc13d1 1996 // Check for ongoing state: scan or TX/RX transaction
mluis 0:62d1edcc13d1 1997 if( (LMIC.opmode & (OP_SCAN|OP_TXRXPEND|OP_SHUTDOWN)) != 0 )
mluis 1:d3b7bde3995c 1998 return;
mluis 0:62d1edcc13d1 1999
mluis 0:62d1edcc13d1 2000 if( LMIC.devaddr == 0 && (LMIC.opmode & OP_JOINING) == 0 ) {
mluis 1:d3b7bde3995c 2001 LMIC_startJoining();
mluis 1:d3b7bde3995c 2002 return;
mluis 0:62d1edcc13d1 2003 }
mluis 0:62d1edcc13d1 2004
mluis 0:62d1edcc13d1 2005 ostime_t now = os_getTime();
mluis 0:62d1edcc13d1 2006 ostime_t rxtime = 0;
mluis 0:62d1edcc13d1 2007 ostime_t txbeg = 0;
mluis 0:62d1edcc13d1 2008
mluis 0:62d1edcc13d1 2009 if( (LMIC.opmode & OP_TRACK) != 0 ) {
mluis 1:d3b7bde3995c 2010 // We are tracking a beacon
mluis 1:d3b7bde3995c 2011 ASSERT( now + RX_RAMPUP - LMIC.bcnRxtime <= 0 );
mluis 1:d3b7bde3995c 2012 rxtime = LMIC.bcnRxtime - RX_RAMPUP;
mluis 0:62d1edcc13d1 2013 }
mluis 0:62d1edcc13d1 2014
mluis 0:62d1edcc13d1 2015 if( (LMIC.opmode & (OP_JOINING|OP_REJOIN|OP_TXDATA|OP_POLL)) != 0 ) {
mluis 1:d3b7bde3995c 2016 // Need to TX some data...
mluis 1:d3b7bde3995c 2017 // Assuming txChnl points to channel which first becomes available again.
mluis 1:d3b7bde3995c 2018 bit_t jacc = ((LMIC.opmode & (OP_JOINING|OP_REJOIN)) != 0 ? 1 : 0);
mluis 1:d3b7bde3995c 2019 // Find next suitable channel and return availability time
mluis 1:d3b7bde3995c 2020 if( (LMIC.opmode & OP_NEXTCHNL) != 0 ) {
mluis 1:d3b7bde3995c 2021 txbeg = LMIC.txend = nextTx(now);
mluis 1:d3b7bde3995c 2022 LMIC.opmode &= ~OP_NEXTCHNL;
mluis 0:62d1edcc13d1 2023 } else {
mluis 1:d3b7bde3995c 2024 txbeg = LMIC.txend;
mluis 1:d3b7bde3995c 2025 }
mluis 1:d3b7bde3995c 2026 // Delayed TX or waiting for duty cycle?
mluis 1:d3b7bde3995c 2027 if( (LMIC.globalDutyRate != 0 || (LMIC.opmode & OP_RNDTX) != 0) && (txbeg - LMIC.globalDutyAvail) < 0 )
mluis 1:d3b7bde3995c 2028 txbeg = LMIC.globalDutyAvail;
mluis 1:d3b7bde3995c 2029 // If we're tracking a beacon...
mluis 1:d3b7bde3995c 2030 // then make sure TX-RX transaction is complete before beacon
mluis 1:d3b7bde3995c 2031 if( (LMIC.opmode & OP_TRACK) != 0 &&
mluis 1:d3b7bde3995c 2032 txbeg + (jacc ? JOIN_GUARD_osticks : TXRX_GUARD_osticks) - rxtime > 0 ) {
mluis 1:d3b7bde3995c 2033 // Not enough time to complete TX-RX before beacon - postpone after beacon.
mluis 1:d3b7bde3995c 2034 // In order to avoid clustering of postponed TX right after beacon randomize start!
mluis 1:d3b7bde3995c 2035 txDelay(rxtime + BCN_RESERVE_osticks, 16);
mluis 1:d3b7bde3995c 2036 txbeg = 0;
mluis 1:d3b7bde3995c 2037 goto checkrx;
mluis 0:62d1edcc13d1 2038 }
mluis 1:d3b7bde3995c 2039 // Earliest possible time vs overhead to setup radio
mluis 1:d3b7bde3995c 2040 if( txbeg - (now + TX_RAMPUP) < 0 ) {
mluis 1:d3b7bde3995c 2041 // We could send right now!
mluis 1:d3b7bde3995c 2042 dr_t txdr = (dr_t)LMIC.datarate;
dudmuck 2:974cafbfb159 2043 txbeg = now;
mluis 1:d3b7bde3995c 2044 if( jacc ) {
mluis 1:d3b7bde3995c 2045 u1_t ftype;
mluis 1:d3b7bde3995c 2046 if( (LMIC.opmode & OP_REJOIN) != 0 ) {
mluis 1:d3b7bde3995c 2047 txdr = lowerDR(txdr, LMIC.rejoinCnt);
dudmuck 2:974cafbfb159 2048 //ftype = HDR_FTYPE_REJOIN;
dudmuck 2:974cafbfb159 2049 ftype = HDR_FTYPE_JREQ;
mluis 1:d3b7bde3995c 2050 } else {
mluis 1:d3b7bde3995c 2051 ftype = HDR_FTYPE_JREQ;
mluis 1:d3b7bde3995c 2052 }
mluis 1:d3b7bde3995c 2053 buildJoinRequest(ftype);
mluis 1:d3b7bde3995c 2054 LMIC.osjob.func = FUNC_ADDR(jreqDone);
mluis 1:d3b7bde3995c 2055 } else {
mluis 1:d3b7bde3995c 2056 if( LMIC.seqnoDn >= 0xFFFFFF80 ) {
mluis 1:d3b7bde3995c 2057 // Imminent roll over - proactively reset MAC
mluis 1:d3b7bde3995c 2058 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
mluis 1:d3b7bde3995c 2059 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2060 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 2061 e_.info2 = 0));
mluis 1:d3b7bde3995c 2062 // Device has to react! NWK will not roll over and just stop sending.
mluis 1:d3b7bde3995c 2063 // Thus, we have N frames to detect a possible lock up.
mluis 1:d3b7bde3995c 2064 reset:
mluis 1:d3b7bde3995c 2065 os_setCallback(&LMIC.osjob, FUNC_ADDR(runReset));
mluis 1:d3b7bde3995c 2066 return;
mluis 1:d3b7bde3995c 2067 }
mluis 1:d3b7bde3995c 2068 if( (LMIC.txCnt==0 && LMIC.seqnoUp == 0xFFFFFFFF) ) {
mluis 1:d3b7bde3995c 2069 // Roll over of up seq counter
mluis 1:d3b7bde3995c 2070 EV(specCond, ERR, (e_.reason = EV::specCond_t::UPSEQNO_ROLL_OVER,
mluis 1:d3b7bde3995c 2071 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2072 e_.info2 = LMIC.seqnoUp));
mluis 1:d3b7bde3995c 2073 // Do not run RESET event callback from here!
mluis 1:d3b7bde3995c 2074 // App code might do some stuff after send unaware of RESET.
mluis 1:d3b7bde3995c 2075 goto reset;
mluis 1:d3b7bde3995c 2076 }
mluis 1:d3b7bde3995c 2077 buildDataFrame();
mluis 1:d3b7bde3995c 2078 LMIC.osjob.func = FUNC_ADDR(updataDone);
mluis 1:d3b7bde3995c 2079 }
mluis 1:d3b7bde3995c 2080 LMIC.rps = setCr(updr2rps(txdr), (cr_t)LMIC.errcr);
mluis 1:d3b7bde3995c 2081 LMIC.dndr = txdr; // carry TX datarate (can be != LMIC.datarate) over to txDone/setupRx1
mluis 1:d3b7bde3995c 2082 LMIC.opmode = (LMIC.opmode & ~(OP_POLL|OP_RNDTX)) | OP_TXRXPEND | OP_NEXTCHNL;
mluis 1:d3b7bde3995c 2083 updateTx(txbeg);
mluis 1:d3b7bde3995c 2084 os_radio(RADIO_TX);
mluis 0:62d1edcc13d1 2085 return;
mluis 0:62d1edcc13d1 2086 }
mluis 1:d3b7bde3995c 2087 // Cannot yet TX
mluis 1:d3b7bde3995c 2088 if( (LMIC.opmode & OP_TRACK) == 0 )
mluis 1:d3b7bde3995c 2089 goto txdelay; // We don't track the beacon - nothing else to do - so wait for the time to TX
mluis 1:d3b7bde3995c 2090 // Consider RX tasks
mluis 1:d3b7bde3995c 2091 if( txbeg == 0 ) // zero indicates no TX pending
mluis 1:d3b7bde3995c 2092 txbeg += 1; // TX delayed by one tick (insignificant amount of time)
mluis 0:62d1edcc13d1 2093 } else {
mluis 1:d3b7bde3995c 2094 // No TX pending - no scheduled RX
mluis 1:d3b7bde3995c 2095 if( (LMIC.opmode & OP_TRACK) == 0 )
mluis 1:d3b7bde3995c 2096 return;
mluis 0:62d1edcc13d1 2097 }
mluis 0:62d1edcc13d1 2098
mluis 0:62d1edcc13d1 2099 // Are we pingable?
mluis 0:62d1edcc13d1 2100 checkrx:
mluis 0:62d1edcc13d1 2101 if( (LMIC.opmode & OP_PINGINI) != 0 ) {
mluis 1:d3b7bde3995c 2102 // One more RX slot in this beacon period?
mluis 1:d3b7bde3995c 2103 if( rxschedNext(&LMIC.ping, now+RX_RAMPUP) ) {
mluis 1:d3b7bde3995c 2104 if( txbeg != 0 && (txbeg - LMIC.ping.rxtime) < 0 )
mluis 1:d3b7bde3995c 2105 goto txdelay;
mluis 1:d3b7bde3995c 2106 LMIC.rxsyms = LMIC.ping.rxsyms;
mluis 1:d3b7bde3995c 2107 LMIC.rxtime = LMIC.ping.rxtime;
mluis 1:d3b7bde3995c 2108 LMIC.freq = LMIC.ping.freq;
mluis 1:d3b7bde3995c 2109 LMIC.rps = dndr2rps(LMIC.ping.dr);
mluis 1:d3b7bde3995c 2110 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 2111 ASSERT(LMIC.rxtime - now+RX_RAMPUP >= 0 );
mluis 1:d3b7bde3995c 2112 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, FUNC_ADDR(startRxPing));
mluis 1:d3b7bde3995c 2113 return;
mluis 1:d3b7bde3995c 2114 }
mluis 1:d3b7bde3995c 2115 // no - just wait for the beacon
mluis 0:62d1edcc13d1 2116 }
mluis 0:62d1edcc13d1 2117
mluis 0:62d1edcc13d1 2118 if( txbeg != 0 && (txbeg - rxtime) < 0 )
mluis 1:d3b7bde3995c 2119 goto txdelay;
mluis 0:62d1edcc13d1 2120
mluis 0:62d1edcc13d1 2121 setBcnRxParams();
mluis 0:62d1edcc13d1 2122 LMIC.rxsyms = LMIC.bcnRxsyms;
mluis 0:62d1edcc13d1 2123 LMIC.rxtime = LMIC.bcnRxtime;
mluis 0:62d1edcc13d1 2124 if( now - rxtime >= 0 ) {
mluis 1:d3b7bde3995c 2125 LMIC.osjob.func = FUNC_ADDR(processBeacon);
mluis 1:d3b7bde3995c 2126 os_radio(RADIO_RX);
mluis 1:d3b7bde3995c 2127 return;
mluis 0:62d1edcc13d1 2128 }
mluis 0:62d1edcc13d1 2129 os_setTimedCallback(&LMIC.osjob, rxtime, FUNC_ADDR(startRxBcn));
mluis 0:62d1edcc13d1 2130 return;
mluis 0:62d1edcc13d1 2131
mluis 0:62d1edcc13d1 2132 txdelay:
mluis 0:62d1edcc13d1 2133 EV(devCond, INFO, (e_.reason = EV::devCond_t::TX_DELAY,
mluis 1:d3b7bde3995c 2134 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2135 e_.info = osticks2ms(txbeg-now),
mluis 1:d3b7bde3995c 2136 e_.info2 = LMIC.seqnoUp-1));
mluis 0:62d1edcc13d1 2137 os_setTimedCallback(&LMIC.osjob, txbeg-TX_RAMPUP, FUNC_ADDR(runEngineUpdate));
mluis 0:62d1edcc13d1 2138 }
mluis 0:62d1edcc13d1 2139
mluis 0:62d1edcc13d1 2140
mluis 0:62d1edcc13d1 2141 void LMIC_setAdrMode (bit_t enabled) {
mluis 0:62d1edcc13d1 2142 LMIC.adrEnabled = enabled ? FCT_ADREN : 0;
mluis 0:62d1edcc13d1 2143 }
mluis 0:62d1edcc13d1 2144
mluis 0:62d1edcc13d1 2145
mluis 0:62d1edcc13d1 2146 // Should we have/need an ext. API like this?
mluis 0:62d1edcc13d1 2147 void LMIC_setDrTxpow (dr_t dr, s1_t txpow) {
mluis 0:62d1edcc13d1 2148 setDrTxpow(DRCHG_SET, dr, txpow);
mluis 0:62d1edcc13d1 2149 }
mluis 0:62d1edcc13d1 2150
mluis 0:62d1edcc13d1 2151
mluis 0:62d1edcc13d1 2152 void LMIC_shutdown (void) {
mluis 0:62d1edcc13d1 2153 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 2154 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 2155 LMIC.opmode |= OP_SHUTDOWN;
mluis 0:62d1edcc13d1 2156 }
mluis 0:62d1edcc13d1 2157
mluis 0:62d1edcc13d1 2158
mluis 0:62d1edcc13d1 2159 void LMIC_reset (void) {
mluis 0:62d1edcc13d1 2160 EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
mluis 1:d3b7bde3995c 2161 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2162 e_.info = EV_RESET));
mluis 0:62d1edcc13d1 2163 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 2164 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 2165
mluis 0:62d1edcc13d1 2166 os_clearMem((xref2u1_t)&LMIC,SIZEOFEXPR(LMIC));
mluis 1:d3b7bde3995c 2167 LMIC.devaddr = 0;
mluis 1:d3b7bde3995c 2168 LMIC.devNonce = os_getRndU2();
mluis 1:d3b7bde3995c 2169 LMIC.opmode = OP_NONE;
mluis 1:d3b7bde3995c 2170 LMIC.errcr = CR_4_5;
mluis 1:d3b7bde3995c 2171 LMIC.adrEnabled = FCT_ADREN;
mluis 1:d3b7bde3995c 2172 LMIC.dn2Dr = DR_DNW2; // we need this for 2nd DN window of join accept
mluis 1:d3b7bde3995c 2173 LMIC.dn2Freq = FREQ_DNW2; // ditto
mluis 1:d3b7bde3995c 2174 LMIC.ping.freq = FREQ_PING; // defaults for ping
mluis 1:d3b7bde3995c 2175 LMIC.ping.dr = DR_PING; // ditto
mluis 1:d3b7bde3995c 2176 LMIC.ping.intvExp = 0xFF;
mluis 1:d3b7bde3995c 2177 #if defined(CFG_us915)
mluis 0:62d1edcc13d1 2178 initDefaultChannels();
mluis 0:62d1edcc13d1 2179 #endif
mluis 1:d3b7bde3995c 2180 DO_DEVDB(LMIC.devaddr, devaddr);
mluis 1:d3b7bde3995c 2181 DO_DEVDB(LMIC.devNonce, devNonce);
mluis 1:d3b7bde3995c 2182 DO_DEVDB(LMIC.dn2Dr, dn2Dr);
mluis 1:d3b7bde3995c 2183 DO_DEVDB(LMIC.dn2Freq, dn2Freq);
mluis 1:d3b7bde3995c 2184 DO_DEVDB(LMIC.ping.freq, pingFreq);
mluis 1:d3b7bde3995c 2185 DO_DEVDB(LMIC.ping.dr, pingDr);
mluis 1:d3b7bde3995c 2186 DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
mluis 0:62d1edcc13d1 2187 }
mluis 0:62d1edcc13d1 2188
mluis 0:62d1edcc13d1 2189
mluis 0:62d1edcc13d1 2190 void LMIC_init (void) {
mluis 0:62d1edcc13d1 2191 LMIC.opmode = OP_SHUTDOWN;
mluis 0:62d1edcc13d1 2192 }
mluis 0:62d1edcc13d1 2193
mluis 0:62d1edcc13d1 2194
mluis 0:62d1edcc13d1 2195 void LMIC_clrTxData (void) {
mluis 0:62d1edcc13d1 2196 LMIC.opmode &= ~(OP_TXDATA|OP_TXRXPEND|OP_POLL);
mluis 0:62d1edcc13d1 2197 LMIC.pendTxLen = 0;
mluis 0:62d1edcc13d1 2198 if( (LMIC.opmode & (OP_JOINING|OP_SCAN)) != 0 ) // do not interfere with JOINING
mluis 1:d3b7bde3995c 2199 return;
mluis 0:62d1edcc13d1 2200 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 2201 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 2202 engineUpdate();
mluis 0:62d1edcc13d1 2203 }
mluis 0:62d1edcc13d1 2204
mluis 0:62d1edcc13d1 2205
mluis 0:62d1edcc13d1 2206 void LMIC_setTxData (void) {
mluis 0:62d1edcc13d1 2207 LMIC.opmode |= OP_TXDATA;
mluis 0:62d1edcc13d1 2208 if( (LMIC.opmode & OP_JOINING) == 0 )
mluis 1:d3b7bde3995c 2209 LMIC.txCnt = 0; // cancel any ongoing TX/RX retries
mluis 0:62d1edcc13d1 2210 engineUpdate();
mluis 0:62d1edcc13d1 2211 }
mluis 0:62d1edcc13d1 2212
mluis 0:62d1edcc13d1 2213
mluis 0:62d1edcc13d1 2214 //
mluis 0:62d1edcc13d1 2215 int LMIC_setTxData2 (u1_t port, xref2u1_t data, u1_t dlen, u1_t confirmed) {
mluis 0:62d1edcc13d1 2216 if( dlen > SIZEOFEXPR(LMIC.pendTxData) )
mluis 1:d3b7bde3995c 2217 return -2;
mluis 0:62d1edcc13d1 2218 if( data != (xref2u1_t)0 )
mluis 1:d3b7bde3995c 2219 os_copyMem(LMIC.pendTxData, data, dlen);
mluis 0:62d1edcc13d1 2220 LMIC.pendTxConf = confirmed;
mluis 0:62d1edcc13d1 2221 LMIC.pendTxPort = port;
mluis 0:62d1edcc13d1 2222 LMIC.pendTxLen = dlen;
mluis 0:62d1edcc13d1 2223 LMIC_setTxData();
mluis 0:62d1edcc13d1 2224 return 0;
mluis 0:62d1edcc13d1 2225 }
mluis 0:62d1edcc13d1 2226
mluis 0:62d1edcc13d1 2227
mluis 0:62d1edcc13d1 2228 // Send a payload-less message to signal device is alive
mluis 0:62d1edcc13d1 2229 void LMIC_sendAlive (void) {
mluis 0:62d1edcc13d1 2230 LMIC.opmode |= OP_POLL;
mluis 0:62d1edcc13d1 2231 engineUpdate();
mluis 0:62d1edcc13d1 2232 }
mluis 0:62d1edcc13d1 2233
mluis 0:62d1edcc13d1 2234
mluis 0:62d1edcc13d1 2235 // Check if other networks are around.
mluis 0:62d1edcc13d1 2236 void LMIC_tryRejoin (void) {
mluis 0:62d1edcc13d1 2237 LMIC.opmode |= OP_REJOIN;
mluis 0:62d1edcc13d1 2238 engineUpdate();
mluis 0:62d1edcc13d1 2239 }
mluis 0:62d1edcc13d1 2240
mluis 1:d3b7bde3995c 2241 //! \brief Setup given session keys
mluis 1:d3b7bde3995c 2242 //! and put the MAC in a state as if
mluis 1:d3b7bde3995c 2243 //! a join request/accept would have negotiated just these keys.
mluis 1:d3b7bde3995c 2244 //! It is crucial that the combinations `devaddr/nwkkey` and `devaddr/artkey`
mluis 1:d3b7bde3995c 2245 //! are unique within the network identified by `netid`.
mluis 1:d3b7bde3995c 2246 //! NOTE: on Harvard architectures when session keys are in flash:
mluis 1:d3b7bde3995c 2247 //! Caller has to fill in LMIC.{nwk,art}Key before and pass {nwk,art}Key are NULL
mluis 1:d3b7bde3995c 2248 //! \param netid a 24 bit number describing the network id this device is using
mluis 1:d3b7bde3995c 2249 //! \param devaddr the 32 bit session address of the device. It is strongly recommended
mluis 1:d3b7bde3995c 2250 //! to ensure that different devices use different numbers with high probability.
mluis 1:d3b7bde3995c 2251 //! \param nwkKey the 16 byte network session key used for message integrity.
mluis 1:d3b7bde3995c 2252 //! If NULL the caller has copied the key into `LMIC.nwkKey` before.
mluis 1:d3b7bde3995c 2253 //! \param artKey the 16 byte application router session key used for message confidentiality.
mluis 1:d3b7bde3995c 2254 //! If NULL the caller has copied the key into `LMIC.artKey` before.
mluis 1:d3b7bde3995c 2255 void LMIC_setSession (u4_t netid, devaddr_t devaddr, xref2u1_t nwkKey, xref2u1_t artKey) {
mluis 0:62d1edcc13d1 2256 LMIC.netid = netid;
mluis 0:62d1edcc13d1 2257 LMIC.devaddr = devaddr;
mluis 1:d3b7bde3995c 2258 if( nwkKey != (xref2u1_t)0 )
mluis 1:d3b7bde3995c 2259 os_copyMem(LMIC.nwkKey, nwkKey, 16);
mluis 1:d3b7bde3995c 2260 if( artKey != (xref2u1_t)0 )
mluis 1:d3b7bde3995c 2261 os_copyMem(LMIC.artKey, artKey, 16);
mluis 0:62d1edcc13d1 2262
mluis 1:d3b7bde3995c 2263 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 2264 initDefaultChannels(0);
mluis 0:62d1edcc13d1 2265 #endif
mluis 1:d3b7bde3995c 2266
mluis 1:d3b7bde3995c 2267 LMIC.opmode &= ~(OP_JOINING|OP_TRACK|OP_REJOIN|OP_TXRXPEND|OP_PINGINI);
mluis 1:d3b7bde3995c 2268 LMIC.opmode |= OP_NEXTCHNL;
mluis 0:62d1edcc13d1 2269 stateJustJoined();
mluis 0:62d1edcc13d1 2270 }
mluis 1:d3b7bde3995c 2271
mluis 1:d3b7bde3995c 2272 // Enable/disable link check validation.
mluis 1:d3b7bde3995c 2273 // LMIC sets the ADRACKREQ bit in UP frames if there were no DN frames
mluis 1:d3b7bde3995c 2274 // for a while. It expects the network to provide a DN message to prove
mluis 1:d3b7bde3995c 2275 // connectivity with a span of UP frames. If this no such prove is coming
mluis 1:d3b7bde3995c 2276 // then the datarate is lowered and a LINK_DEAD event is generated.
mluis 1:d3b7bde3995c 2277 // This mode can be disabled and no connectivity prove (ADRACKREQ) is requested
mluis 1:d3b7bde3995c 2278 // nor is the datarate changed.
mluis 1:d3b7bde3995c 2279 // This must be called only if a session is established (e.g. after EV_JOINED)
mluis 1:d3b7bde3995c 2280 void LMIC_setLinkCheckMode (bit_t enabled) {
mluis 1:d3b7bde3995c 2281 LMIC.adrChanged = 0;
mluis 1:d3b7bde3995c 2282 LMIC.adrAckReq = enabled ? LINK_CHECK_INIT : LINK_CHECK_OFF;
mluis 1:d3b7bde3995c 2283 }
mluis 1:d3b7bde3995c 2284
dudmuck 2:974cafbfb159 2285 void LMIC_reverse_memcpy(u1_t *dst, const u1_t *src, size_t n)
dudmuck 2:974cafbfb159 2286 {
dudmuck 2:974cafbfb159 2287 size_t i;
dudmuck 2:974cafbfb159 2288
dudmuck 2:974cafbfb159 2289 for (i=0; i < n; ++i)
dudmuck 2:974cafbfb159 2290 dst[n-1-i] = src[i];
dudmuck 2:974cafbfb159 2291 }