Alcatel-Lucent IoT Development / LMiCLibOTADeviceEverynet

LMIC lib Lora OTA device for Everynet

Fork of LMiC-10secs by Alcatel-Lucent IoT Development

lmic.cpp@3:1079dc4b4c59, 2015-11-23 (annotated)

Committer:
pnysten
Date:
Mon Nov 23 09:53:54 2015 +0000
Revision:
3:1079dc4b4c59
Parent:
2:bebd6b2e3d18
Child:
4:663db54d46eb
Encryption bypassed when port is >0

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
pnysten 2:bebd6b2e3d18 13
pnysten 2:bebd6b2e3d18 14
mluis 0:62d1edcc13d1 15 #include "lmic.h"
pnysten 2:bebd6b2e3d18 16 #include "debug.h"
mluis 0:62d1edcc13d1 17
mluis 1:d3b7bde3995c 18 #if !defined(MINRX_SYMS)
mluis 1:d3b7bde3995c 19 #define MINRX_SYMS 5
mluis 1:d3b7bde3995c 20 #endif // !defined(MINRX_SYMS)
mluis 0:62d1edcc13d1 21 #define PAMBL_SYMS 8
mluis 0:62d1edcc13d1 22 #define PAMBL_FSK 5
mluis 0:62d1edcc13d1 23 #define PRERX_FSK 1
mluis 0:62d1edcc13d1 24 #define RXLEN_FSK (1+5+2)
mluis 0:62d1edcc13d1 25
mluis 0:62d1edcc13d1 26 #define BCN_INTV_osticks sec2osticks(BCN_INTV_sec)
mluis 0:62d1edcc13d1 27 #define TXRX_GUARD_osticks ms2osticks(TXRX_GUARD_ms)
mluis 0:62d1edcc13d1 28 #define JOIN_GUARD_osticks ms2osticks(JOIN_GUARD_ms)
mluis 0:62d1edcc13d1 29 #define DELAY_DNW1_osticks sec2osticks(DELAY_DNW1)
mluis 0:62d1edcc13d1 30 #define DELAY_DNW2_osticks sec2osticks(DELAY_DNW2)
mluis 0:62d1edcc13d1 31 #define DELAY_JACC1_osticks sec2osticks(DELAY_JACC1)
mluis 0:62d1edcc13d1 32 #define DELAY_JACC2_osticks sec2osticks(DELAY_JACC2)
mluis 0:62d1edcc13d1 33 #define DELAY_EXTDNW2_osticks sec2osticks(DELAY_EXTDNW2)
mluis 0:62d1edcc13d1 34 #define BCN_RESERVE_osticks ms2osticks(BCN_RESERVE_ms)
mluis 0:62d1edcc13d1 35 #define BCN_GUARD_osticks ms2osticks(BCN_GUARD_ms)
mluis 0:62d1edcc13d1 36 #define BCN_WINDOW_osticks ms2osticks(BCN_WINDOW_ms)
mluis 0:62d1edcc13d1 37 #define AIRTIME_BCN_osticks us2osticks(AIRTIME_BCN)
mluis 1:d3b7bde3995c 38 #if defined(CFG_eu868)
mluis 1:d3b7bde3995c 39 #define DNW2_SAFETY_ZONE ms2osticks(3000)
mluis 1:d3b7bde3995c 40 #endif
mluis 1:d3b7bde3995c 41 #if defined(CFG_us915)
mluis 1:d3b7bde3995c 42 #define DNW2_SAFETY_ZONE ms2osticks(750)
mluis 1:d3b7bde3995c 43 #endif
mluis 1:d3b7bde3995c 44
mluis 1:d3b7bde3995c 45 // Special APIs - for development or testing
mluis 1:d3b7bde3995c 46 #define isTESTMODE() 0
mluis 0:62d1edcc13d1 47
mluis 0:62d1edcc13d1 48 DEFINE_LMIC;
mluis 0:62d1edcc13d1 49 DECL_ON_LMIC_EVENT;
mluis 0:62d1edcc13d1 50
mluis 0:62d1edcc13d1 51
mluis 0:62d1edcc13d1 52 // Fwd decls.
mluis 0:62d1edcc13d1 53 static void engineUpdate(void);
mluis 0:62d1edcc13d1 54 static void startScan (void);
mluis 0:62d1edcc13d1 55
mluis 0:62d1edcc13d1 56
mluis 0:62d1edcc13d1 57 // ================================================================================
mluis 0:62d1edcc13d1 58 // BEG OS - default implementations for certain OS suport functions
mluis 0:62d1edcc13d1 59
mluis 1:d3b7bde3995c 60 #if !defined(HAS_os_calls)
mluis 0:62d1edcc13d1 61
mluis 1:d3b7bde3995c 62 #if !defined(os_rlsbf2)
mluis 0:62d1edcc13d1 63 u2_t os_rlsbf2 (xref2cu1_t buf) {
mluis 0:62d1edcc13d1 64 return (u2_t)(buf[0] | (buf[1]<<8));
mluis 0:62d1edcc13d1 65 }
mluis 0:62d1edcc13d1 66 #endif
mluis 0:62d1edcc13d1 67
mluis 1:d3b7bde3995c 68 #if !defined(os_rlsbf4)
mluis 0:62d1edcc13d1 69 u4_t os_rlsbf4 (xref2cu1_t buf) {
mluis 0:62d1edcc13d1 70 return (u4_t)(buf[0] | (buf[1]<<8) | ((u4_t)buf[2]<<16) | ((u4_t)buf[3]<<24));
mluis 0:62d1edcc13d1 71 }
mluis 0:62d1edcc13d1 72 #endif
mluis 0:62d1edcc13d1 73
mluis 0:62d1edcc13d1 74
mluis 1:d3b7bde3995c 75 #if !defined(os_rmsbf4)
mluis 0:62d1edcc13d1 76 u4_t os_rmsbf4 (xref2cu1_t buf) {
mluis 0:62d1edcc13d1 77 return (u4_t)(buf[3] | (buf[2]<<8) | ((u4_t)buf[1]<<16) | ((u4_t)buf[0]<<24));
mluis 0:62d1edcc13d1 78 }
mluis 0:62d1edcc13d1 79 #endif
mluis 0:62d1edcc13d1 80
mluis 0:62d1edcc13d1 81
mluis 1:d3b7bde3995c 82 #if !defined(os_wlsbf2)
mluis 0:62d1edcc13d1 83 void os_wlsbf2 (xref2u1_t buf, u2_t v) {
mluis 0:62d1edcc13d1 84 buf[0] = v;
mluis 0:62d1edcc13d1 85 buf[1] = v>>8;
mluis 0:62d1edcc13d1 86 }
mluis 0:62d1edcc13d1 87 #endif
mluis 0:62d1edcc13d1 88
mluis 1:d3b7bde3995c 89 #if !defined(os_wlsbf4)
mluis 0:62d1edcc13d1 90 void os_wlsbf4 (xref2u1_t buf, u4_t v) {
mluis 0:62d1edcc13d1 91 buf[0] = v;
mluis 0:62d1edcc13d1 92 buf[1] = v>>8;
mluis 0:62d1edcc13d1 93 buf[2] = v>>16;
mluis 0:62d1edcc13d1 94 buf[3] = v>>24;
mluis 0:62d1edcc13d1 95 }
mluis 0:62d1edcc13d1 96 #endif
mluis 0:62d1edcc13d1 97
mluis 1:d3b7bde3995c 98 #if !defined(os_wmsbf4)
mluis 0:62d1edcc13d1 99 void os_wmsbf4 (xref2u1_t buf, u4_t v) {
mluis 0:62d1edcc13d1 100 buf[3] = v;
mluis 0:62d1edcc13d1 101 buf[2] = v>>8;
mluis 0:62d1edcc13d1 102 buf[1] = v>>16;
mluis 0:62d1edcc13d1 103 buf[0] = v>>24;
mluis 0:62d1edcc13d1 104 }
mluis 0:62d1edcc13d1 105 #endif
mluis 0:62d1edcc13d1 106
mluis 1:d3b7bde3995c 107 #if !defined(os_getBattLevel)
mluis 0:62d1edcc13d1 108 u1_t os_getBattLevel (void) {
mluis 0:62d1edcc13d1 109 return MCMD_DEVS_BATT_NOINFO;
mluis 0:62d1edcc13d1 110 }
mluis 0:62d1edcc13d1 111 #endif
mluis 0:62d1edcc13d1 112
mluis 1:d3b7bde3995c 113 #if !defined(os_crc16)
mluis 1:d3b7bde3995c 114 // New CRC-16 CCITT(XMODEM) checksum for beacons:
mluis 0:62d1edcc13d1 115 u2_t os_crc16 (xref2u1_t data, uint len) {
mluis 1:d3b7bde3995c 116 u2_t remainder = 0;
mluis 1:d3b7bde3995c 117 u2_t polynomial = 0x1021;
mluis 1:d3b7bde3995c 118 for( uint i = 0; i < len; i++ ) {
mluis 1:d3b7bde3995c 119 remainder ^= data[i] << 8;
mluis 1:d3b7bde3995c 120 for( u1_t bit = 8; bit > 0; bit--) {
mluis 1:d3b7bde3995c 121 if( (remainder & 0x8000) )
mluis 1:d3b7bde3995c 122 remainder = (remainder << 1) ^ polynomial;
mluis 1:d3b7bde3995c 123 else
mluis 1:d3b7bde3995c 124 remainder <<= 1;
mluis 1:d3b7bde3995c 125 }
mluis 0:62d1edcc13d1 126 }
mluis 1:d3b7bde3995c 127 return remainder;
mluis 0:62d1edcc13d1 128 }
mluis 0:62d1edcc13d1 129 #endif
mluis 0:62d1edcc13d1 130
mluis 0:62d1edcc13d1 131 #endif // !HAS_os_calls
mluis 0:62d1edcc13d1 132
mluis 0:62d1edcc13d1 133 // END OS - default implementations for certain OS suport functions
mluis 0:62d1edcc13d1 134 // ================================================================================
mluis 0:62d1edcc13d1 135
mluis 0:62d1edcc13d1 136 // ================================================================================
mluis 0:62d1edcc13d1 137 // BEG AES
mluis 0:62d1edcc13d1 138
mluis 0:62d1edcc13d1 139 static void micB0 (u4_t devaddr, u4_t seqno, int dndir, int len) {
mluis 0:62d1edcc13d1 140 os_clearMem(AESaux,16);
mluis 0:62d1edcc13d1 141 AESaux[0] = 0x49;
mluis 0:62d1edcc13d1 142 AESaux[5] = dndir?1:0;
mluis 0:62d1edcc13d1 143 AESaux[15] = len;
mluis 0:62d1edcc13d1 144 os_wlsbf4(AESaux+ 6,devaddr);
mluis 0:62d1edcc13d1 145 os_wlsbf4(AESaux+10,seqno);
mluis 0:62d1edcc13d1 146 }
mluis 0:62d1edcc13d1 147
mluis 0:62d1edcc13d1 148
mluis 0:62d1edcc13d1 149 static int aes_verifyMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) {
mluis 0:62d1edcc13d1 150 micB0(devaddr, seqno, dndir, len);
mluis 0:62d1edcc13d1 151 os_copyMem(AESkey,key,16);
mluis 0:62d1edcc13d1 152 return os_aes(AES_MIC, pdu, len) == os_rmsbf4(pdu+len);
mluis 0:62d1edcc13d1 153 }
mluis 0:62d1edcc13d1 154
mluis 0:62d1edcc13d1 155
mluis 0:62d1edcc13d1 156 static void aes_appendMic (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t pdu, int len) {
mluis 0:62d1edcc13d1 157 micB0(devaddr, seqno, dndir, len);
mluis 0:62d1edcc13d1 158 os_copyMem(AESkey,key,16);
mluis 0:62d1edcc13d1 159 // MSB because of internal structure of AES
mluis 0:62d1edcc13d1 160 os_wmsbf4(pdu+len, os_aes(AES_MIC, pdu, len));
mluis 0:62d1edcc13d1 161 }
mluis 0:62d1edcc13d1 162
mluis 0:62d1edcc13d1 163
mluis 0:62d1edcc13d1 164 static void aes_appendMic0 (xref2u1_t pdu, int len) {
mluis 0:62d1edcc13d1 165 os_getDevKey(AESkey);
mluis 0:62d1edcc13d1 166 os_wmsbf4(pdu+len, os_aes(AES_MIC|AES_MICNOAUX, pdu, len)); // MSB because of internal structure of AES
mluis 0:62d1edcc13d1 167 }
mluis 0:62d1edcc13d1 168
mluis 0:62d1edcc13d1 169
mluis 0:62d1edcc13d1 170 static int aes_verifyMic0 (xref2u1_t pdu, int len) {
mluis 0:62d1edcc13d1 171 os_getDevKey(AESkey);
mluis 0:62d1edcc13d1 172 return os_aes(AES_MIC|AES_MICNOAUX, pdu, len) == os_rmsbf4(pdu+len);
mluis 0:62d1edcc13d1 173 }
mluis 0:62d1edcc13d1 174
mluis 0:62d1edcc13d1 175
mluis 0:62d1edcc13d1 176 static void aes_encrypt (xref2u1_t pdu, int len) {
mluis 0:62d1edcc13d1 177 os_getDevKey(AESkey);
mluis 0:62d1edcc13d1 178 os_aes(AES_ENC, pdu, len);
mluis 0:62d1edcc13d1 179 }
mluis 0:62d1edcc13d1 180
mluis 0:62d1edcc13d1 181
mluis 0:62d1edcc13d1 182 static void aes_cipher (xref2cu1_t key, u4_t devaddr, u4_t seqno, int dndir, xref2u1_t payload, int len) {
mluis 0:62d1edcc13d1 183 if( len <= 0 )
mluis 1:d3b7bde3995c 184 return;
mluis 0:62d1edcc13d1 185 os_clearMem(AESaux, 16);
mluis 0:62d1edcc13d1 186 AESaux[0] = AESaux[15] = 1; // mode=cipher / dir=down / block counter=1
mluis 0:62d1edcc13d1 187 AESaux[5] = dndir?1:0;
mluis 0:62d1edcc13d1 188 os_wlsbf4(AESaux+ 6,devaddr);
mluis 0:62d1edcc13d1 189 os_wlsbf4(AESaux+10,seqno);
mluis 0:62d1edcc13d1 190 os_copyMem(AESkey,key,16);
mluis 0:62d1edcc13d1 191 os_aes(AES_CTR, payload, len);
mluis 0:62d1edcc13d1 192 }
mluis 0:62d1edcc13d1 193
mluis 0:62d1edcc13d1 194
mluis 0:62d1edcc13d1 195 static void aes_sessKeys (u2_t devnonce, xref2cu1_t artnonce, xref2u1_t nwkkey, xref2u1_t artkey) {
mluis 0:62d1edcc13d1 196 os_clearMem(nwkkey, 16);
mluis 0:62d1edcc13d1 197 nwkkey[0] = 0x01;
mluis 0:62d1edcc13d1 198 os_copyMem(nwkkey+1, artnonce, LEN_ARTNONCE+LEN_NETID);
mluis 0:62d1edcc13d1 199 os_wlsbf2(nwkkey+1+LEN_ARTNONCE+LEN_NETID, devnonce);
mluis 0:62d1edcc13d1 200 os_copyMem(artkey, nwkkey, 16);
mluis 0:62d1edcc13d1 201 artkey[0] = 0x02;
mluis 0:62d1edcc13d1 202
mluis 0:62d1edcc13d1 203 os_getDevKey(AESkey);
mluis 0:62d1edcc13d1 204 os_aes(AES_ENC, nwkkey, 16);
mluis 0:62d1edcc13d1 205 os_getDevKey(AESkey);
mluis 0:62d1edcc13d1 206 os_aes(AES_ENC, artkey, 16);
mluis 0:62d1edcc13d1 207 }
mluis 0:62d1edcc13d1 208
mluis 0:62d1edcc13d1 209 // END AES
mluis 0:62d1edcc13d1 210 // ================================================================================
mluis 0:62d1edcc13d1 211
mluis 0:62d1edcc13d1 212
mluis 0:62d1edcc13d1 213 // ================================================================================
mluis 0:62d1edcc13d1 214 // BEG LORA
mluis 0:62d1edcc13d1 215
mluis 1:d3b7bde3995c 216 #if defined(CFG_eu868) // ========================================
mluis 0:62d1edcc13d1 217
mluis 0:62d1edcc13d1 218 #define maxFrameLen(dr) ((dr)<=DR_SF9 ? maxFrameLens[(dr)] : 0xFF)
mluis 0:62d1edcc13d1 219 const u1_t maxFrameLens [] = { 64,64,64,123 };
mluis 0:62d1edcc13d1 220
mluis 0:62d1edcc13d1 221 const u1_t _DR2RPS_CRC[] = {
mluis 0:62d1edcc13d1 222 ILLEGAL_RPS,
mluis 0:62d1edcc13d1 223 (u1_t)MAKERPS(SF12, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 224 (u1_t)MAKERPS(SF11, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 225 (u1_t)MAKERPS(SF10, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 226 (u1_t)MAKERPS(SF9, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 227 (u1_t)MAKERPS(SF8, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 228 (u1_t)MAKERPS(SF7, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 229 (u1_t)MAKERPS(SF7, BW250, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 230 (u1_t)MAKERPS(FSK, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 231 ILLEGAL_RPS
mluis 0:62d1edcc13d1 232 };
mluis 0:62d1edcc13d1 233
mluis 0:62d1edcc13d1 234 static const s1_t TXPOWLEVELS[] = {
mluis 0:62d1edcc13d1 235 20, 14, 11, 8, 5, 2, 0,0, 0,0,0,0, 0,0,0,0
mluis 0:62d1edcc13d1 236 };
mluis 0:62d1edcc13d1 237 #define pow2dBm(mcmd_ladr_p1) (TXPOWLEVELS[(mcmd_ladr_p1&MCMD_LADR_POW_MASK)>>MCMD_LADR_POW_SHIFT])
mluis 0:62d1edcc13d1 238
mluis 1:d3b7bde3995c 239 #elif defined(CFG_us915) // ========================================
mluis 0:62d1edcc13d1 240
mluis 0:62d1edcc13d1 241 #define maxFrameLen(dr) ((dr)<=DR_SF11CR ? maxFrameLens[(dr)] : 0xFF)
mluis 0:62d1edcc13d1 242 const u1_t maxFrameLens [] = { 24,66,142,255,255,255,255,255, 66,142 };
mluis 0:62d1edcc13d1 243
mluis 0:62d1edcc13d1 244 const u1_t _DR2RPS_CRC[] = {
mluis 0:62d1edcc13d1 245 ILLEGAL_RPS,
mluis 0:62d1edcc13d1 246 MAKERPS(SF10, BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 247 MAKERPS(SF9 , BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 248 MAKERPS(SF8 , BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 249 MAKERPS(SF7 , BW125, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 250 MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 251 ILLEGAL_RPS ,
mluis 0:62d1edcc13d1 252 ILLEGAL_RPS ,
mluis 0:62d1edcc13d1 253 ILLEGAL_RPS ,
mluis 0:62d1edcc13d1 254 MAKERPS(SF12, BW500, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 255 MAKERPS(SF11, BW500, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 256 MAKERPS(SF10, BW500, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 257 MAKERPS(SF9 , BW500, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 258 MAKERPS(SF8 , BW500, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 259 MAKERPS(SF7 , BW500, CR_4_5, 0, 0),
mluis 0:62d1edcc13d1 260 ILLEGAL_RPS
mluis 0:62d1edcc13d1 261 };
mluis 0:62d1edcc13d1 262
mluis 0:62d1edcc13d1 263 #define pow2dBm(mcmd_ladr_p1) ((s1_t)(30 - (((mcmd_ladr_p1)&MCMD_LADR_POW_MASK)<<1)))
mluis 0:62d1edcc13d1 264
mluis 0:62d1edcc13d1 265 #endif // ================================================
mluis 0:62d1edcc13d1 266
mluis 0:62d1edcc13d1 267 static const u1_t SENSITIVITY[7][3] = {
mluis 0:62d1edcc13d1 268 // ------------bw----------
mluis 0:62d1edcc13d1 269 // 125kHz 250kHz 500kHz
mluis 0:62d1edcc13d1 270 { 141-109, 141-109, 141-109 }, // FSK
mluis 0:62d1edcc13d1 271 { 141-127, 141-124, 141-121 }, // SF7
mluis 0:62d1edcc13d1 272 { 141-129, 141-126, 141-123 }, // SF8
mluis 0:62d1edcc13d1 273 { 141-132, 141-129, 141-126 }, // SF9
mluis 0:62d1edcc13d1 274 { 141-135, 141-132, 141-129 }, // SF10
mluis 0:62d1edcc13d1 275 { 141-138, 141-135, 141-132 }, // SF11
mluis 0:62d1edcc13d1 276 { 141-141, 141-138, 141-135 } // SF12
mluis 0:62d1edcc13d1 277 };
mluis 0:62d1edcc13d1 278
mluis 0:62d1edcc13d1 279 int getSensitivity (rps_t rps) {
mluis 0:62d1edcc13d1 280 return -141 + SENSITIVITY[getSf(rps)][getBw(rps)];
mluis 0:62d1edcc13d1 281 }
mluis 0:62d1edcc13d1 282
mluis 0:62d1edcc13d1 283 ostime_t calcAirTime (rps_t rps, u1_t plen) {
mluis 0:62d1edcc13d1 284 u1_t bw = getBw(rps); // 0,1,2 = 125,250,500kHz
mluis 0:62d1edcc13d1 285 u1_t sf = getSf(rps); // 0=FSK, 1..6 = SF7..12
mluis 0:62d1edcc13d1 286 if( sf == FSK ) {
mluis 1:d3b7bde3995c 287 return (plen+/*preamble*/5+/*syncword*/3+/*len*/1+/*crc*/2) * /*bits/byte*/8
mluis 1:d3b7bde3995c 288 * (s4_t)OSTICKS_PER_SEC / /*kbit/s*/50000;
mluis 0:62d1edcc13d1 289 }
mluis 0:62d1edcc13d1 290 u1_t sfx = 4*(sf+(7-SF7));
mluis 0:62d1edcc13d1 291 u1_t q = sfx - (sf >= SF11 ? 8 : 0);
mluis 0:62d1edcc13d1 292 int tmp = 8*plen - sfx + 28 + (getNocrc(rps)?0:16) - (getIh(rps)?20:0);
mluis 0:62d1edcc13d1 293 if( tmp > 0 ) {
mluis 1:d3b7bde3995c 294 tmp = (tmp + q - 1) / q;
mluis 1:d3b7bde3995c 295 tmp *= getCr(rps)+5;
mluis 1:d3b7bde3995c 296 tmp += 8;
mluis 0:62d1edcc13d1 297 } else {
mluis 1:d3b7bde3995c 298 tmp = 8;
mluis 0:62d1edcc13d1 299 }
mluis 0:62d1edcc13d1 300 tmp = (tmp<<2) + /*preamble*/49 /* 4 * (8 + 4.25) */;
mluis 0:62d1edcc13d1 301 // bw = 125000 = 15625 * 2^3
mluis 0:62d1edcc13d1 302 // 250000 = 15625 * 2^4
mluis 0:62d1edcc13d1 303 // 500000 = 15625 * 2^5
mluis 0:62d1edcc13d1 304 // sf = 7..12
mluis 0:62d1edcc13d1 305 //
mluis 0:62d1edcc13d1 306 // osticks = tmp * OSTICKS_PER_SEC * 1<<sf / bw
mluis 0:62d1edcc13d1 307 //
mluis 0:62d1edcc13d1 308 // 3 => counter reduced divisor 125000/8 => 15625
mluis 0:62d1edcc13d1 309 // 2 => counter 2 shift on tmp
mluis 0:62d1edcc13d1 310 sfx = sf+(7-SF7) - (3+2) - bw;
mluis 0:62d1edcc13d1 311 int div = 15625;
mluis 0:62d1edcc13d1 312 if( sfx > 4 ) {
mluis 1:d3b7bde3995c 313 // prevent 32bit signed int overflow in last step
mluis 1:d3b7bde3995c 314 div >>= sfx-4;
mluis 1:d3b7bde3995c 315 sfx = 4;
mluis 0:62d1edcc13d1 316 }
mluis 0:62d1edcc13d1 317 // Need 32bit arithmetic for this last step
mluis 0:62d1edcc13d1 318 return (((ostime_t)tmp << sfx) * OSTICKS_PER_SEC + div/2) / div;
mluis 0:62d1edcc13d1 319 }
mluis 0:62d1edcc13d1 320
mluis 0:62d1edcc13d1 321 extern inline s1_t rssi2s1 (int v);
mluis 0:62d1edcc13d1 322 extern inline int s12rssi (s1_t v);
mluis 0:62d1edcc13d1 323 extern inline float s12snr (s1_t v);
mluis 0:62d1edcc13d1 324 extern inline s1_t snr2s1 (double v);
mluis 0:62d1edcc13d1 325
mluis 0:62d1edcc13d1 326 extern inline rps_t updr2rps (dr_t dr);
mluis 0:62d1edcc13d1 327 extern inline rps_t dndr2rps (dr_t dr);
mluis 0:62d1edcc13d1 328 extern inline int isFasterDR (dr_t dr1, dr_t dr2);
mluis 0:62d1edcc13d1 329 extern inline int isSlowerDR (dr_t dr1, dr_t dr2);
mluis 0:62d1edcc13d1 330 extern inline dr_t incDR (dr_t dr);
mluis 0:62d1edcc13d1 331 extern inline dr_t decDR (dr_t dr);
mluis 0:62d1edcc13d1 332 extern inline dr_t assertDR (dr_t dr);
mluis 0:62d1edcc13d1 333 extern inline dr_t validDR (dr_t dr);
mluis 0:62d1edcc13d1 334 extern inline dr_t lowerDR (dr_t dr, u1_t n);
mluis 0:62d1edcc13d1 335
mluis 0:62d1edcc13d1 336 extern inline sf_t getSf (rps_t params);
mluis 0:62d1edcc13d1 337 extern inline rps_t setSf (rps_t params, sf_t sf);
mluis 0:62d1edcc13d1 338 extern inline bw_t getBw (rps_t params);
mluis 0:62d1edcc13d1 339 extern inline rps_t setBw (rps_t params, bw_t cr);
mluis 0:62d1edcc13d1 340 extern inline cr_t getCr (rps_t params);
mluis 0:62d1edcc13d1 341 extern inline rps_t setCr (rps_t params, cr_t cr);
mluis 0:62d1edcc13d1 342 extern inline int getNocrc (rps_t params);
mluis 0:62d1edcc13d1 343 extern inline rps_t setNocrc (rps_t params, int nocrc);
mluis 0:62d1edcc13d1 344 extern inline int getIh (rps_t params);
mluis 0:62d1edcc13d1 345 extern inline rps_t setIh (rps_t params, int ih);
mluis 0:62d1edcc13d1 346 extern inline rps_t makeRps (sf_t sf, bw_t bw, cr_t cr, int ih, int nocrc);
mluis 0:62d1edcc13d1 347 extern inline int sameSfBw (rps_t r1, rps_t r2);
mluis 0:62d1edcc13d1 348
mluis 0:62d1edcc13d1 349 // END LORA
mluis 0:62d1edcc13d1 350 // ================================================================================
mluis 0:62d1edcc13d1 351
mluis 0:62d1edcc13d1 352
mluis 0:62d1edcc13d1 353 // Adjust DR for TX retries
mluis 0:62d1edcc13d1 354 // - indexed by retry count
mluis 0:62d1edcc13d1 355 // - return steps to lower DR
mluis 0:62d1edcc13d1 356 static const u1_t DRADJUST[2+TXCONF_ATTEMPTS] = {
mluis 0:62d1edcc13d1 357 // normal frames - 1st try / no retry
mluis 0:62d1edcc13d1 358 0,
mluis 0:62d1edcc13d1 359 // confirmed frames
mluis 1:d3b7bde3995c 360 0,0,1,0,1,0,1,0,0
mluis 0:62d1edcc13d1 361 };
mluis 0:62d1edcc13d1 362
mluis 0:62d1edcc13d1 363
mluis 0:62d1edcc13d1 364 // Table below defines the size of one symbol as
mluis 0:62d1edcc13d1 365 // symtime = 256us * 2^T(sf,bw)
mluis 0:62d1edcc13d1 366 // 256us is called one symunit.
mluis 1:d3b7bde3995c 367 // SF:
mluis 1:d3b7bde3995c 368 // BW: |__7___8___9__10__11__12
mluis 1:d3b7bde3995c 369 // 125kHz | 2 3 4 5 6 7
mluis 1:d3b7bde3995c 370 // 250kHz | 1 2 3 4 5 6
mluis 1:d3b7bde3995c 371 // 500kHz | 0 1 2 3 4 5
mluis 0:62d1edcc13d1 372 //
mluis 0:62d1edcc13d1 373 // Times for half symbol per DR
mluis 0:62d1edcc13d1 374 // Per DR table to minimize rounding errors
mluis 0:62d1edcc13d1 375 static const ostime_t DR2HSYM_osticks[] = {
mluis 1:d3b7bde3995c 376 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 377 #define dr2hsym(dr) (DR2HSYM_osticks[(dr)])
mluis 0:62d1edcc13d1 378 us2osticksRound(128<<7), // DR_SF12
mluis 0:62d1edcc13d1 379 us2osticksRound(128<<6), // DR_SF11
mluis 0:62d1edcc13d1 380 us2osticksRound(128<<5), // DR_SF10
mluis 0:62d1edcc13d1 381 us2osticksRound(128<<4), // DR_SF9
mluis 0:62d1edcc13d1 382 us2osticksRound(128<<3), // DR_SF8
mluis 0:62d1edcc13d1 383 us2osticksRound(128<<2), // DR_SF7
mluis 0:62d1edcc13d1 384 us2osticksRound(128<<1), // DR_SF7B
mluis 0:62d1edcc13d1 385 us2osticksRound(80) // FSK -- not used (time for 1/2 byte)
mluis 1:d3b7bde3995c 386 #elif defined(CFG_us915)
mluis 0:62d1edcc13d1 387 #define dr2hsym(dr) (DR2HSYM_osticks[(dr)&7]) // map DR_SFnCR -> 0-6
mluis 0:62d1edcc13d1 388 us2osticksRound(128<<5), // DR_SF10 DR_SF12CR
mluis 0:62d1edcc13d1 389 us2osticksRound(128<<4), // DR_SF9 DR_SF11CR
mluis 0:62d1edcc13d1 390 us2osticksRound(128<<3), // DR_SF8 DR_SF10CR
mluis 0:62d1edcc13d1 391 us2osticksRound(128<<2), // DR_SF7 DR_SF9CR
mluis 0:62d1edcc13d1 392 us2osticksRound(128<<1), // DR_SF8C DR_SF8CR
mluis 0:62d1edcc13d1 393 us2osticksRound(128<<0) // ------ DR_SF7CR
mluis 0:62d1edcc13d1 394 #endif
mluis 0:62d1edcc13d1 395 };
mluis 0:62d1edcc13d1 396
mluis 0:62d1edcc13d1 397
mluis 0:62d1edcc13d1 398 static ostime_t calcRxWindow (u1_t secs, dr_t dr) {
mluis 0:62d1edcc13d1 399 ostime_t rxoff, err;
mluis 0:62d1edcc13d1 400 if( secs==0 ) {
mluis 1:d3b7bde3995c 401 // aka 128 secs (next becaon)
mluis 1:d3b7bde3995c 402 rxoff = LMIC.drift;
mluis 1:d3b7bde3995c 403 err = LMIC.lastDriftDiff;
mluis 0:62d1edcc13d1 404 } else {
mluis 1:d3b7bde3995c 405 // scheduled RX window within secs into current beacon period
mluis 1:d3b7bde3995c 406 rxoff = (LMIC.drift * (ostime_t)secs) >> BCN_INTV_exp;
mluis 1:d3b7bde3995c 407 err = (LMIC.lastDriftDiff * (ostime_t)secs) >> BCN_INTV_exp;
mluis 0:62d1edcc13d1 408 }
mluis 0:62d1edcc13d1 409 u1_t rxsyms = MINRX_SYMS;
mluis 0:62d1edcc13d1 410 err += (ostime_t)LMIC.maxDriftDiff * LMIC.missedBcns;
mluis 0:62d1edcc13d1 411 LMIC.rxsyms = MINRX_SYMS + (err / dr2hsym(dr));
mluis 0:62d1edcc13d1 412
mluis 0:62d1edcc13d1 413 return (rxsyms-PAMBL_SYMS) * dr2hsym(dr) + rxoff;
mluis 0:62d1edcc13d1 414 }
mluis 0:62d1edcc13d1 415
mluis 0:62d1edcc13d1 416
mluis 0:62d1edcc13d1 417 // Setup beacon RX parameters assuming we have an error of ms (aka +/-(ms/2))
mluis 0:62d1edcc13d1 418 static void calcBcnRxWindowFromMillis (u1_t ms, bit_t ini) {
mluis 0:62d1edcc13d1 419 if( ini ) {
mluis 1:d3b7bde3995c 420 LMIC.drift = 0;
mluis 1:d3b7bde3995c 421 LMIC.maxDriftDiff = 0;
mluis 1:d3b7bde3995c 422 LMIC.missedBcns = 0;
mluis 1:d3b7bde3995c 423 LMIC.bcninfo.flags |= BCN_NODRIFT|BCN_NODDIFF;
mluis 0:62d1edcc13d1 424 }
mluis 0:62d1edcc13d1 425 ostime_t hsym = dr2hsym(DR_BCN);
mluis 0:62d1edcc13d1 426 LMIC.bcnRxsyms = MINRX_SYMS + ms2osticksCeil(ms) / hsym;
mluis 0:62d1edcc13d1 427 LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - (LMIC.bcnRxsyms-PAMBL_SYMS) * hsym;
mluis 0:62d1edcc13d1 428 }
mluis 0:62d1edcc13d1 429
mluis 0:62d1edcc13d1 430
mluis 0:62d1edcc13d1 431 // Setup scheduled RX window (ping/multicast slot)
mluis 0:62d1edcc13d1 432 static void rxschedInit (xref2rxsched_t rxsched) {
mluis 0:62d1edcc13d1 433 os_clearMem(AESkey,16);
mluis 0:62d1edcc13d1 434 os_clearMem(LMIC.frame+8,8);
mluis 0:62d1edcc13d1 435 os_wlsbf4(LMIC.frame, LMIC.bcninfo.time);
mluis 0:62d1edcc13d1 436 os_wlsbf4(LMIC.frame+4, LMIC.devaddr);
mluis 0:62d1edcc13d1 437 os_aes(AES_ENC,LMIC.frame,16);
mluis 0:62d1edcc13d1 438 u1_t intvExp = rxsched->intvExp;
mluis 0:62d1edcc13d1 439 ostime_t off = os_rlsbf2(LMIC.frame) & (0x0FFF >> (7 - intvExp)); // random offset (slot units)
mluis 0:62d1edcc13d1 440 rxsched->rxbase = (LMIC.bcninfo.txtime +
mluis 1:d3b7bde3995c 441 BCN_RESERVE_osticks +
mluis 1:d3b7bde3995c 442 ms2osticks(BCN_SLOT_SPAN_ms * off)); // random offset osticks
mluis 0:62d1edcc13d1 443 rxsched->slot = 0;
mluis 0:62d1edcc13d1 444 rxsched->rxtime = rxsched->rxbase - calcRxWindow(/*secs BCN_RESERVE*/2+(1<<intvExp),rxsched->dr);
mluis 0:62d1edcc13d1 445 rxsched->rxsyms = LMIC.rxsyms;
mluis 0:62d1edcc13d1 446 }
mluis 0:62d1edcc13d1 447
mluis 0:62d1edcc13d1 448
mluis 0:62d1edcc13d1 449 static bit_t rxschedNext (xref2rxsched_t rxsched, ostime_t cando) {
mluis 0:62d1edcc13d1 450 again:
mluis 0:62d1edcc13d1 451 if( rxsched->rxtime - cando >= 0 )
mluis 1:d3b7bde3995c 452 return 1;
mluis 0:62d1edcc13d1 453 u1_t slot;
mluis 0:62d1edcc13d1 454 if( (slot=rxsched->slot) >= 128 )
mluis 1:d3b7bde3995c 455 return 0;
mluis 0:62d1edcc13d1 456 u1_t intv = 1<<rxsched->intvExp;
mluis 0:62d1edcc13d1 457 if( (rxsched->slot = (slot += (intv))) >= 128 )
mluis 1:d3b7bde3995c 458 return 0;
mluis 0:62d1edcc13d1 459 rxsched->rxtime = rxsched->rxbase
mluis 1:d3b7bde3995c 460 + ((BCN_WINDOW_osticks * (ostime_t)slot) >> BCN_INTV_exp)
mluis 1:d3b7bde3995c 461 - calcRxWindow(/*secs BCN_RESERVE*/2+slot+intv,rxsched->dr);
mluis 0:62d1edcc13d1 462 rxsched->rxsyms = LMIC.rxsyms;
mluis 0:62d1edcc13d1 463 goto again;
mluis 0:62d1edcc13d1 464 }
mluis 0:62d1edcc13d1 465
mluis 0:62d1edcc13d1 466
mluis 0:62d1edcc13d1 467 static ostime_t rndDelay (u1_t secSpan) {
mluis 0:62d1edcc13d1 468 u2_t r = os_getRndU2();
mluis 0:62d1edcc13d1 469 ostime_t delay = r;
mluis 0:62d1edcc13d1 470 if( delay > OSTICKS_PER_SEC )
mluis 1:d3b7bde3995c 471 delay = r % (u2_t)OSTICKS_PER_SEC;
mluis 0:62d1edcc13d1 472 if( secSpan > 0 )
mluis 1:d3b7bde3995c 473 delay += ((u1_t)r % secSpan) * OSTICKS_PER_SEC;
mluis 0:62d1edcc13d1 474 return delay;
mluis 0:62d1edcc13d1 475 }
mluis 0:62d1edcc13d1 476
mluis 0:62d1edcc13d1 477
mluis 0:62d1edcc13d1 478 static void txDelay (ostime_t reftime, u1_t secSpan) {
mluis 0:62d1edcc13d1 479 reftime += rndDelay(secSpan);
mluis 0:62d1edcc13d1 480 if( LMIC.globalDutyRate == 0 || (reftime - LMIC.globalDutyAvail) > 0 ) {
mluis 1:d3b7bde3995c 481 LMIC.globalDutyAvail = reftime;
mluis 1:d3b7bde3995c 482 LMIC.opmode |= OP_RNDTX;
mluis 0:62d1edcc13d1 483 }
mluis 0:62d1edcc13d1 484 }
mluis 0:62d1edcc13d1 485
mluis 0:62d1edcc13d1 486
mluis 0:62d1edcc13d1 487 static void setDrJoin (u1_t reason, u1_t dr) {
mluis 0:62d1edcc13d1 488 EV(drChange, INFO, (e_.reason = reason,
mluis 1:d3b7bde3995c 489 e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 490 e_.dr = dr|DR_PAGE,
mluis 1:d3b7bde3995c 491 e_.txpow = LMIC.adrTxPow,
mluis 1:d3b7bde3995c 492 e_.prevdr = LMIC.datarate|DR_PAGE,
mluis 1:d3b7bde3995c 493 e_.prevtxpow = LMIC.adrTxPow));
mluis 0:62d1edcc13d1 494 LMIC.datarate = dr;
mluis 1:d3b7bde3995c 495 DO_DEVDB(LMIC.datarate,datarate);
mluis 0:62d1edcc13d1 496 }
mluis 0:62d1edcc13d1 497
mluis 0:62d1edcc13d1 498
mluis 0:62d1edcc13d1 499 static void setDrTxpow (u1_t reason, u1_t dr, s1_t pow) {
mluis 0:62d1edcc13d1 500 EV(drChange, INFO, (e_.reason = reason,
mluis 1:d3b7bde3995c 501 e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 502 e_.dr = dr|DR_PAGE,
mluis 1:d3b7bde3995c 503 e_.txpow = pow,
mluis 1:d3b7bde3995c 504 e_.prevdr = LMIC.datarate|DR_PAGE,
mluis 1:d3b7bde3995c 505 e_.prevtxpow = LMIC.adrTxPow));
mluis 1:d3b7bde3995c 506
mluis 0:62d1edcc13d1 507 if( pow != KEEP_TXPOW )
mluis 1:d3b7bde3995c 508 LMIC.adrTxPow = pow;
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 //
mluis 1:d3b7bde3995c 538 enum { NUM_DEFAULT_CHANNELS=6 };
mluis 0:62d1edcc13d1 539 static const u4_t iniChannelFreq[12] = {
mluis 0:62d1edcc13d1 540 // Join frequencies and duty cycle limit (0.1%)
mluis 1:d3b7bde3995c 541 EU868_F1|BAND_MILLI, EU868_J4|BAND_MILLI,
mluis 1:d3b7bde3995c 542 EU868_F2|BAND_MILLI, EU868_J5|BAND_MILLI,
mluis 1:d3b7bde3995c 543 EU868_F3|BAND_MILLI, EU868_J6|BAND_MILLI,
mluis 0:62d1edcc13d1 544 // Default operational frequencies
mluis 0:62d1edcc13d1 545 EU868_F1|BAND_CENTI, EU868_F2|BAND_CENTI, EU868_F3|BAND_CENTI,
mluis 0:62d1edcc13d1 546 EU868_F4|BAND_MILLI, EU868_F5|BAND_MILLI, EU868_F6|BAND_DECI
mluis 0:62d1edcc13d1 547 };
mluis 0:62d1edcc13d1 548
mluis 0:62d1edcc13d1 549 static void initDefaultChannels (bit_t join) {
mluis 1:d3b7bde3995c 550 os_clearMem(&LMIC.channelFreq, sizeof(LMIC.channelFreq));
mluis 1:d3b7bde3995c 551 os_clearMem(&LMIC.channelDrMap, sizeof(LMIC.channelDrMap));
mluis 1:d3b7bde3995c 552 os_clearMem(&LMIC.bands, sizeof(LMIC.bands));
mluis 1:d3b7bde3995c 553
mluis 1:d3b7bde3995c 554 LMIC.channelMap = 0x1F;
mluis 0:62d1edcc13d1 555 u1_t su = join ? 0 : 6;
mluis 0:62d1edcc13d1 556 for( u1_t fu=0; fu<6; fu++,su++ ) {
mluis 1:d3b7bde3995c 557 LMIC.channelFreq[fu] = iniChannelFreq[su];
mluis 1:d3b7bde3995c 558 LMIC.channelDrMap[fu] = DR_RANGE_MAP(DR_SF12,DR_SF7);
mluis 0:62d1edcc13d1 559 }
mluis 1:d3b7bde3995c 560 if( !join ) {
mluis 1:d3b7bde3995c 561 LMIC.channelDrMap[5] = DR_RANGE_MAP(DR_SF12,DR_SF7);
mluis 1:d3b7bde3995c 562 LMIC.channelDrMap[1] = DR_RANGE_MAP(DR_SF12,DR_FSK);
mluis 1:d3b7bde3995c 563 }
mluis 0:62d1edcc13d1 564
mluis 1:d3b7bde3995c 565 LMIC.bands[BAND_MILLI].txcap = 1000; // 0.1%
mluis 1:d3b7bde3995c 566 LMIC.bands[BAND_MILLI].txpow = 14;
mluis 1:d3b7bde3995c 567 LMIC.bands[BAND_MILLI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 1:d3b7bde3995c 568 LMIC.bands[BAND_CENTI].txcap = 100; // 1%
mluis 1:d3b7bde3995c 569 LMIC.bands[BAND_CENTI].txpow = 14;
mluis 1:d3b7bde3995c 570 LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 1:d3b7bde3995c 571 LMIC.bands[BAND_DECI ].txcap = 10; // 10%
mluis 1:d3b7bde3995c 572 LMIC.bands[BAND_DECI ].txpow = 27;
mluis 1:d3b7bde3995c 573 LMIC.bands[BAND_CENTI].lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 0:62d1edcc13d1 574 LMIC.bands[BAND_MILLI].avail =
mluis 0:62d1edcc13d1 575 LMIC.bands[BAND_CENTI].avail =
mluis 0:62d1edcc13d1 576 LMIC.bands[BAND_DECI ].avail = os_getTime();
mluis 0:62d1edcc13d1 577 }
mluis 0:62d1edcc13d1 578
mluis 1:d3b7bde3995c 579 bit_t LMIC_setupBand (u1_t bandidx, s1_t txpow, u2_t txcap) {
mluis 1:d3b7bde3995c 580 if( bandidx > BAND_AUX ) return 0;
mluis 1:d3b7bde3995c 581 band_t* b = &LMIC.bands[bandidx];
mluis 1:d3b7bde3995c 582 b->txpow = txpow;
mluis 1:d3b7bde3995c 583 b->txcap = txcap;
mluis 1:d3b7bde3995c 584 b->avail = os_getTime();
mluis 1:d3b7bde3995c 585 b->lastchnl = os_getRndU1() % MAX_CHANNELS;
mluis 1:d3b7bde3995c 586 return 1;
mluis 1:d3b7bde3995c 587 }
mluis 1:d3b7bde3995c 588
mluis 1:d3b7bde3995c 589 bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
mluis 1:d3b7bde3995c 590 if( chidx >= MAX_CHANNELS )
mluis 1:d3b7bde3995c 591 return 0;
mluis 1:d3b7bde3995c 592 if( band == -1 ) {
mluis 1:d3b7bde3995c 593 if( freq >= 869400000 && freq <= 869650000 )
mluis 1:d3b7bde3995c 594 freq |= BAND_DECI; // 10% 27dBm
mluis 1:d3b7bde3995c 595 else if( (freq >= 868000000 && freq <= 868600000) ||
mluis 1:d3b7bde3995c 596 (freq >= 869700000 && freq <= 870000000) )
mluis 1:d3b7bde3995c 597 freq |= BAND_CENTI; // 1% 14dBm
mluis 1:d3b7bde3995c 598 else
mluis 1:d3b7bde3995c 599 freq |= BAND_MILLI; // 0.1% 14dBm
mluis 1:d3b7bde3995c 600 } else {
mluis 1:d3b7bde3995c 601 if( band > BAND_AUX ) return 0;
mluis 1:d3b7bde3995c 602 freq = (freq&~3) | band;
mluis 1:d3b7bde3995c 603 }
mluis 1:d3b7bde3995c 604 LMIC.channelFreq [chidx] = freq;
mluis 1:d3b7bde3995c 605 LMIC.channelDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF12,DR_SF7) : drmap;
mluis 1:d3b7bde3995c 606 LMIC.channelMap |= 1<<chidx; // enabled right away
mluis 1:d3b7bde3995c 607 return 1;
mluis 1:d3b7bde3995c 608 }
mluis 1:d3b7bde3995c 609
mluis 1:d3b7bde3995c 610 void LMIC_disableChannel (u1_t channel) {
mluis 1:d3b7bde3995c 611 LMIC.channelFreq[channel] = 0;
mluis 1:d3b7bde3995c 612 LMIC.channelDrMap[channel] = 0;
mluis 1:d3b7bde3995c 613 LMIC.channelMap &= ~(1<<channel);
mluis 1:d3b7bde3995c 614 }
mluis 1:d3b7bde3995c 615
mluis 0:62d1edcc13d1 616 static u4_t convFreq (xref2u1_t ptr) {
mluis 0:62d1edcc13d1 617 u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
mluis 1:d3b7bde3995c 618 if( freq < EU868_FREQ_MIN || freq > EU868_FREQ_MAX )
mluis 1:d3b7bde3995c 619 freq = 0;
mluis 0:62d1edcc13d1 620 return freq;
mluis 0:62d1edcc13d1 621 }
mluis 0:62d1edcc13d1 622
mluis 0:62d1edcc13d1 623 static u1_t mapChannels (u1_t chpage, u2_t chmap) {
mluis 1:d3b7bde3995c 624 // Bad page, disable all channel, enable non-existent
mluis 1:d3b7bde3995c 625 if( chpage != 0 || chmap==0 || (chmap & ~LMIC.channelMap) != 0 )
mluis 1:d3b7bde3995c 626 return 0; // illegal input
mluis 0:62d1edcc13d1 627 for( u1_t chnl=0; chnl<MAX_CHANNELS; chnl++ ) {
mluis 1:d3b7bde3995c 628 if( (chmap & (1<<chnl)) != 0 && LMIC.channelFreq[chnl] == 0 )
mluis 1:d3b7bde3995c 629 chmap &= ~(1<<chnl); // ignore - channel is not defined
mluis 0:62d1edcc13d1 630 }
mluis 0:62d1edcc13d1 631 LMIC.channelMap = chmap;
mluis 0:62d1edcc13d1 632 return 1;
mluis 0:62d1edcc13d1 633 }
mluis 0:62d1edcc13d1 634
mluis 0:62d1edcc13d1 635
mluis 0:62d1edcc13d1 636 static void updateTx (ostime_t txbeg) {
mluis 0:62d1edcc13d1 637 u4_t freq = LMIC.channelFreq[LMIC.txChnl];
mluis 0:62d1edcc13d1 638 // Update global/band specific duty cycle stats
mluis 0:62d1edcc13d1 639 ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
mluis 0:62d1edcc13d1 640 // Update channel/global duty cycle stats
mluis 0:62d1edcc13d1 641 xref2band_t band = &LMIC.bands[freq & 0x3];
mluis 0:62d1edcc13d1 642 LMIC.freq = freq & ~(u4_t)3;
mluis 0:62d1edcc13d1 643 LMIC.txpow = band->txpow;
mluis 0:62d1edcc13d1 644 band->avail = txbeg + airtime * band->txcap;
mluis 0:62d1edcc13d1 645 if( LMIC.globalDutyRate != 0 )
mluis 1:d3b7bde3995c 646 LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
mluis 0:62d1edcc13d1 647 }
mluis 0:62d1edcc13d1 648
mluis 0:62d1edcc13d1 649 static ostime_t nextTx (ostime_t now) {
mluis 1:d3b7bde3995c 650 u1_t bmap=0xF;
mluis 1:d3b7bde3995c 651 do {
mluis 1:d3b7bde3995c 652 ostime_t mintime = now + /*10h*/36000*OSTICKS_PER_SEC;
mluis 1:d3b7bde3995c 653 u1_t band=0;
mluis 1:d3b7bde3995c 654 for( u1_t bi=0; bi<4; bi++ ) {
mluis 1:d3b7bde3995c 655 if( (bmap & (1<<bi)) && mintime - LMIC.bands[bi].avail > 0 )
mluis 1:d3b7bde3995c 656 mintime = LMIC.bands[band = bi].avail;
mluis 0:62d1edcc13d1 657 }
mluis 1:d3b7bde3995c 658 // Find next channel in given band
mluis 1:d3b7bde3995c 659 u1_t chnl = LMIC.bands[band].lastchnl;
mluis 1:d3b7bde3995c 660 for( u1_t ci=0; ci<MAX_CHANNELS; ci++ ) {
mluis 1:d3b7bde3995c 661 if( (chnl = (chnl+1)) >= MAX_CHANNELS )
mluis 1:d3b7bde3995c 662 chnl -= MAX_CHANNELS;
mluis 1:d3b7bde3995c 663 if( (LMIC.channelMap & (1<<chnl)) != 0 && // channel enabled
mluis 1:d3b7bde3995c 664 (LMIC.channelDrMap[chnl] & (1<<(LMIC.datarate&0xF))) != 0 &&
mluis 1:d3b7bde3995c 665 band == (LMIC.channelFreq[chnl] & 0x3) ) { // in selected band
mluis 1:d3b7bde3995c 666 LMIC.txChnl = LMIC.bands[band].lastchnl = chnl;
mluis 1:d3b7bde3995c 667 return mintime;
mluis 1:d3b7bde3995c 668 }
mluis 0:62d1edcc13d1 669 }
mluis 1:d3b7bde3995c 670 if( (bmap &= ~(1<<band)) == 0 ) {
mluis 1:d3b7bde3995c 671 // No feasible channel found!
mluis 1:d3b7bde3995c 672 return mintime;
mluis 1:d3b7bde3995c 673 }
mluis 0:62d1edcc13d1 674 } while(1);
mluis 0:62d1edcc13d1 675 }
mluis 0:62d1edcc13d1 676
mluis 1:d3b7bde3995c 677
mluis 0:62d1edcc13d1 678 static void setBcnRxParams (void) {
mluis 0:62d1edcc13d1 679 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 680 LMIC.freq = LMIC.channelFreq[LMIC.bcnChnl] & ~(u4_t)3;
mluis 0:62d1edcc13d1 681 LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
mluis 0:62d1edcc13d1 682 }
mluis 0:62d1edcc13d1 683
mluis 0:62d1edcc13d1 684 #define setRx1Params() /*LMIC.freq/rps remain unchanged*/
mluis 0:62d1edcc13d1 685
mluis 0:62d1edcc13d1 686 static void initJoinLoop (void) {
mluis 1:d3b7bde3995c 687 LMIC.txChnl = os_getRndU1() % 6;
mluis 0:62d1edcc13d1 688 LMIC.adrTxPow = 14;
mluis 0:62d1edcc13d1 689 setDrJoin(DRCHG_SET, DR_SF7);
mluis 0:62d1edcc13d1 690 initDefaultChannels(1);
mluis 0:62d1edcc13d1 691 ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
mluis 1:d3b7bde3995c 692 LMIC.txend = LMIC.bands[BAND_MILLI].avail + rndDelay(8);
mluis 0:62d1edcc13d1 693 }
mluis 0:62d1edcc13d1 694
mluis 0:62d1edcc13d1 695
mluis 0:62d1edcc13d1 696 static ostime_t nextJoinState (void) {
mluis 1:d3b7bde3995c 697 u1_t failed = 0;
mluis 1:d3b7bde3995c 698
mluis 0:62d1edcc13d1 699 // Try 869.x and then 864.x with same DR
mluis 0:62d1edcc13d1 700 // If both fail try next lower datarate
mluis 1:d3b7bde3995c 701 if( ++LMIC.txChnl == 6 )
mluis 1:d3b7bde3995c 702 LMIC.txChnl = 0;
mluis 1:d3b7bde3995c 703 if( (++LMIC.txCnt & 1) == 0 ) {
mluis 1:d3b7bde3995c 704 // Lower DR every 2nd try (having tried 868.x and 864.x with the same DR)
mluis 1:d3b7bde3995c 705 if( LMIC.datarate == DR_SF12 )
mluis 1:d3b7bde3995c 706 failed = 1; // we have tried all DR - signal EV_JOIN_FAILED
mluis 1:d3b7bde3995c 707 else
mluis 1:d3b7bde3995c 708 setDrJoin(DRCHG_NOJACC, decDR((dr_t)LMIC.datarate));
mluis 1:d3b7bde3995c 709 }
mluis 1:d3b7bde3995c 710 // Clear NEXTCHNL because join state engine controls channel hopping
mluis 0:62d1edcc13d1 711 LMIC.opmode &= ~OP_NEXTCHNL;
mluis 1:d3b7bde3995c 712 // Move txend to randomize synchronized concurrent joins.
mluis 1:d3b7bde3995c 713 // Duty cycle is based on txend.
mluis 1:d3b7bde3995c 714 ostime_t time = os_getTime();
mluis 1:d3b7bde3995c 715 if( time - LMIC.bands[BAND_MILLI].avail < 0 )
mluis 1:d3b7bde3995c 716 time = LMIC.bands[BAND_MILLI].avail;
mluis 1:d3b7bde3995c 717 LMIC.txend = time +
mluis 1:d3b7bde3995c 718 (isTESTMODE()
mluis 1:d3b7bde3995c 719 // Avoid collision with JOIN ACCEPT @ SF12 being sent by GW (but we missed it)
mluis 1:d3b7bde3995c 720 ? DNW2_SAFETY_ZONE
mluis 1:d3b7bde3995c 721 // Otherwise: randomize join (street lamp case):
mluis 1:d3b7bde3995c 722 // SF12:255, SF11:127, .., SF7:8secs
mluis 1:d3b7bde3995c 723 : DNW2_SAFETY_ZONE+rndDelay(255>>LMIC.datarate));
mluis 1:d3b7bde3995c 724 // 1 - triggers EV_JOIN_FAILED event
mluis 1:d3b7bde3995c 725 return failed;
mluis 0:62d1edcc13d1 726 }
mluis 0:62d1edcc13d1 727
mluis 0:62d1edcc13d1 728 //
mluis 0:62d1edcc13d1 729 // END: EU868 related stuff
mluis 0:62d1edcc13d1 730 //
mluis 0:62d1edcc13d1 731 // ================================================================================
mluis 1:d3b7bde3995c 732 #elif defined(CFG_us915)
mluis 0:62d1edcc13d1 733 // ================================================================================
mluis 0:62d1edcc13d1 734 //
mluis 0:62d1edcc13d1 735 // BEG: US915 related stuff
mluis 0:62d1edcc13d1 736 //
mluis 0:62d1edcc13d1 737
mluis 1:d3b7bde3995c 738
mluis 0:62d1edcc13d1 739 static void initDefaultChannels (void) {
mluis 0:62d1edcc13d1 740 for( u1_t i=0; i<4; i++ )
mluis 1:d3b7bde3995c 741 LMIC.channelMap[i] = 0xFFFF;
mluis 0:62d1edcc13d1 742 LMIC.channelMap[4] = 0x00FF;
mluis 0:62d1edcc13d1 743 }
mluis 0:62d1edcc13d1 744
mluis 0:62d1edcc13d1 745 static u4_t convFreq (xref2u1_t ptr) {
mluis 0:62d1edcc13d1 746 u4_t freq = (os_rlsbf4(ptr-1) >> 8) * 100;
mluis 0:62d1edcc13d1 747 if( freq >= US915_FREQ_MIN && freq <= US915_FREQ_MAX )
mluis 1:d3b7bde3995c 748 freq = 0;
mluis 0:62d1edcc13d1 749 return freq;
mluis 0:62d1edcc13d1 750 }
mluis 0:62d1edcc13d1 751
mluis 1:d3b7bde3995c 752 bit_t LMIC_setupChannel (u1_t chidx, u4_t freq, u2_t drmap, s1_t band) {
mluis 0:62d1edcc13d1 753 if( chidx < 72 || chidx >= 72+MAX_XCHANNELS )
mluis 1:d3b7bde3995c 754 return 0; // channels 0..71 are hardwired
mluis 0:62d1edcc13d1 755 chidx -= 72;
mluis 0:62d1edcc13d1 756 LMIC.xchFreq[chidx] = freq;
mluis 1:d3b7bde3995c 757 LMIC.xchDrMap[chidx] = drmap==0 ? DR_RANGE_MAP(DR_SF10,DR_SF8C) : drmap;
mluis 0:62d1edcc13d1 758 LMIC.channelMap[chidx>>4] |= (1<<(chidx&0xF));
mluis 0:62d1edcc13d1 759 return 1;
mluis 0:62d1edcc13d1 760 }
mluis 0:62d1edcc13d1 761
mluis 1:d3b7bde3995c 762 void LMIC_disableChannel (u1_t channel) {
mluis 1:d3b7bde3995c 763 if( channel < 72+MAX_XCHANNELS )
mluis 1:d3b7bde3995c 764 LMIC.channelMap[channel/4] &= ~(1<<(channel&0xF));
mluis 1:d3b7bde3995c 765 }
mluis 0:62d1edcc13d1 766
mluis 0:62d1edcc13d1 767 static u1_t mapChannels (u1_t chpage, u2_t chmap) {
mluis 0:62d1edcc13d1 768 if( chpage == MCMD_LADR_CHP_125ON || chpage == MCMD_LADR_CHP_125OFF ) {
mluis 1:d3b7bde3995c 769 u2_t en125 = chpage == MCMD_LADR_CHP_125ON ? 0xFFFF : 0x0000;
mluis 1:d3b7bde3995c 770 for( u1_t u=0; u<4; u++ )
mluis 1:d3b7bde3995c 771 LMIC.channelMap[u] = en125;
mluis 1:d3b7bde3995c 772 LMIC.channelMap[64/16] = chmap;
mluis 0:62d1edcc13d1 773 } else {
mluis 1:d3b7bde3995c 774 if( chpage >= (72+MAX_XCHANNELS+15)/16 )
mluis 1:d3b7bde3995c 775 return 0;
mluis 1:d3b7bde3995c 776 LMIC.channelMap[chpage] = chmap;
mluis 0:62d1edcc13d1 777 }
mluis 0:62d1edcc13d1 778 return 1;
mluis 0:62d1edcc13d1 779 }
mluis 0:62d1edcc13d1 780
mluis 0:62d1edcc13d1 781 static void updateTx (ostime_t txbeg) {
mluis 0:62d1edcc13d1 782 u1_t chnl = LMIC.txChnl;
mluis 0:62d1edcc13d1 783 if( chnl < 64 ) {
mluis 1:d3b7bde3995c 784 LMIC.freq = US915_125kHz_UPFBASE + chnl*US915_125kHz_UPFSTEP;
mluis 1:d3b7bde3995c 785 LMIC.txpow = 30;
mluis 1:d3b7bde3995c 786 return;
mluis 0:62d1edcc13d1 787 }
mluis 0:62d1edcc13d1 788 LMIC.txpow = 26;
mluis 0:62d1edcc13d1 789 if( chnl < 64+8 ) {
mluis 1:d3b7bde3995c 790 LMIC.freq = US915_500kHz_UPFBASE + (chnl-64)*US915_500kHz_UPFSTEP;
mluis 0:62d1edcc13d1 791 } else {
mluis 1:d3b7bde3995c 792 ASSERT(chnl < 64+8+MAX_XCHANNELS);
mluis 1:d3b7bde3995c 793 LMIC.freq = LMIC.xchFreq[chnl-72];
mluis 0:62d1edcc13d1 794 }
mluis 0:62d1edcc13d1 795
mluis 0:62d1edcc13d1 796 // Update global duty cycle stats
mluis 0:62d1edcc13d1 797 if( LMIC.globalDutyRate != 0 ) {
mluis 1:d3b7bde3995c 798 ostime_t airtime = calcAirTime(LMIC.rps, LMIC.dataLen);
mluis 1:d3b7bde3995c 799 LMIC.globalDutyAvail = txbeg + (airtime<<LMIC.globalDutyRate);
mluis 0:62d1edcc13d1 800 }
mluis 0:62d1edcc13d1 801 }
mluis 0:62d1edcc13d1 802
mluis 0:62d1edcc13d1 803 // US does not have duty cycling - return now as earliest TX time
mluis 0:62d1edcc13d1 804 #define nextTx(now) (_nextTx(),(now))
mluis 0:62d1edcc13d1 805 static void _nextTx (void) {
mluis 1:d3b7bde3995c 806 if( LMIC.chRnd==0 )
mluis 1:d3b7bde3995c 807 LMIC.chRnd = os_getRndU1() & 0x3F;
mluis 1:d3b7bde3995c 808 if( LMIC.datarate >= DR_SF8C ) { // 500kHz
mluis 1:d3b7bde3995c 809 u1_t map = LMIC.channelMap[64/16]&0xFF;
mluis 1:d3b7bde3995c 810 for( u1_t i=0; i<8; i++ ) {
mluis 1:d3b7bde3995c 811 if( (map & (1<<(++LMIC.chRnd & 7))) != 0 ) {
mluis 1:d3b7bde3995c 812 LMIC.txChnl = 64 + (LMIC.chRnd & 7);
mluis 1:d3b7bde3995c 813 return;
mluis 1:d3b7bde3995c 814 }
mluis 1:d3b7bde3995c 815 }
mluis 1:d3b7bde3995c 816 } else { // 125kHz
mluis 1:d3b7bde3995c 817 for( u1_t i=0; i<64; i++ ) {
mluis 1:d3b7bde3995c 818 u1_t chnl = ++LMIC.chRnd & 0x3F;
mluis 1:d3b7bde3995c 819 if( (LMIC.channelMap[(chnl >> 4)] & (1<<(chnl & 0xF))) != 0 ) {
mluis 1:d3b7bde3995c 820 LMIC.txChnl = chnl;
mluis 1:d3b7bde3995c 821 return;
mluis 1:d3b7bde3995c 822 }
mluis 1:d3b7bde3995c 823 }
mluis 0:62d1edcc13d1 824 }
mluis 1:d3b7bde3995c 825 // No feasible channel found! Keep old one.
mluis 0:62d1edcc13d1 826 }
mluis 0:62d1edcc13d1 827
mluis 0:62d1edcc13d1 828 static void setBcnRxParams (void) {
mluis 0:62d1edcc13d1 829 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 830 LMIC.freq = US915_500kHz_DNFBASE + LMIC.bcnChnl * US915_500kHz_DNFSTEP;
mluis 0:62d1edcc13d1 831 LMIC.rps = setIh(setNocrc(dndr2rps((dr_t)DR_BCN),1),LEN_BCN);
mluis 0:62d1edcc13d1 832 }
mluis 0:62d1edcc13d1 833
mluis 1:d3b7bde3995c 834 #define setRx1Params() { \
mluis 0:62d1edcc13d1 835 LMIC.freq = US915_500kHz_DNFBASE + (LMIC.txChnl & 0x7) * US915_500kHz_DNFSTEP; \
mluis 1:d3b7bde3995c 836 if( /* TX datarate */LMIC.dndr < DR_SF8C ) \
mluis 1:d3b7bde3995c 837 LMIC.dndr += DR_SF10CR - DR_SF10; \
mluis 1:d3b7bde3995c 838 else if( LMIC.dndr == DR_SF8C ) \
mluis 1:d3b7bde3995c 839 LMIC.dndr = DR_SF7CR; \
mluis 1:d3b7bde3995c 840 LMIC.rps = dndr2rps(LMIC.dndr); \
mluis 0:62d1edcc13d1 841 }
mluis 0:62d1edcc13d1 842
mluis 0:62d1edcc13d1 843 static void initJoinLoop (void) {
mluis 1:d3b7bde3995c 844 LMIC.chRnd = 0;
mluis 1:d3b7bde3995c 845 LMIC.txChnl = 0;
mluis 0:62d1edcc13d1 846 LMIC.adrTxPow = 20;
mluis 0:62d1edcc13d1 847 ASSERT((LMIC.opmode & OP_NEXTCHNL)==0);
mluis 0:62d1edcc13d1 848 LMIC.txend = os_getTime();
mluis 0:62d1edcc13d1 849 setDrJoin(DRCHG_SET, DR_SF7);
mluis 0:62d1edcc13d1 850 }
mluis 0:62d1edcc13d1 851
mluis 0:62d1edcc13d1 852 static ostime_t nextJoinState (void) {
mluis 0:62d1edcc13d1 853 // Try the following:
mluis 0:62d1edcc13d1 854 // SF7/8/9/10 on a random channel 0..63
mluis 0:62d1edcc13d1 855 // SF8C on a random channel 64..71
mluis 0:62d1edcc13d1 856 //
mluis 1:d3b7bde3995c 857 u1_t failed = 0;
mluis 0:62d1edcc13d1 858 if( LMIC.datarate != DR_SF8C ) {
mluis 1:d3b7bde3995c 859 LMIC.txChnl = 64+(LMIC.txChnl&7);
mluis 1:d3b7bde3995c 860 setDrJoin(DRCHG_SET, DR_SF8C);
mluis 0:62d1edcc13d1 861 } else {
mluis 1:d3b7bde3995c 862 LMIC.txChnl = os_getRndU1() & 0x3F;
mluis 1:d3b7bde3995c 863 s1_t dr = DR_SF7 - ++LMIC.txCnt;
mluis 1:d3b7bde3995c 864 if( dr < DR_SF10 ) {
mluis 1:d3b7bde3995c 865 dr = DR_SF10;
mluis 1:d3b7bde3995c 866 failed = 1; // All DR exhausted - signal failed
mluis 1:d3b7bde3995c 867 }
mluis 1:d3b7bde3995c 868 setDrJoin(DRCHG_SET, dr);
mluis 0:62d1edcc13d1 869 }
mluis 1:d3b7bde3995c 870 LMIC.opmode &= ~OP_NEXTCHNL;
mluis 1:d3b7bde3995c 871 LMIC.txend = os_getTime() +
mluis 1:d3b7bde3995c 872 (isTESTMODE()
mluis 1:d3b7bde3995c 873 // Avoid collision with JOIN ACCEPT being sent by GW (but we missed it - GW is still busy)
mluis 1:d3b7bde3995c 874 ? DNW2_SAFETY_ZONE
mluis 1:d3b7bde3995c 875 // Otherwise: randomize join (street lamp case):
mluis 1:d3b7bde3995c 876 // SF10:16, SF9=8,..SF8C:1secs
mluis 1:d3b7bde3995c 877 : rndDelay(16>>LMIC.datarate));
mluis 1:d3b7bde3995c 878 // 1 - triggers EV_JOIN_FAILED event
mluis 1:d3b7bde3995c 879 return failed;
mluis 0:62d1edcc13d1 880 }
mluis 0:62d1edcc13d1 881
mluis 0:62d1edcc13d1 882 //
mluis 0:62d1edcc13d1 883 // END: US915 related stuff
mluis 0:62d1edcc13d1 884 //
mluis 0:62d1edcc13d1 885 // ================================================================================
mluis 0:62d1edcc13d1 886 #else
mluis 0:62d1edcc13d1 887 #error Unsupported frequency band!
mluis 0:62d1edcc13d1 888 #endif
mluis 0:62d1edcc13d1 889
mluis 0:62d1edcc13d1 890
mluis 0:62d1edcc13d1 891 static void runEngineUpdate (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 892 engineUpdate();
mluis 0:62d1edcc13d1 893 }
mluis 0:62d1edcc13d1 894
mluis 0:62d1edcc13d1 895
mluis 0:62d1edcc13d1 896 static void reportEvent (ev_t ev) {
mluis 0:62d1edcc13d1 897 EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
mluis 1:d3b7bde3995c 898 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 899 e_.info = ev));
mluis 0:62d1edcc13d1 900 ON_LMIC_EVENT(ev);
mluis 0:62d1edcc13d1 901 engineUpdate();
mluis 0:62d1edcc13d1 902 }
mluis 0:62d1edcc13d1 903
mluis 0:62d1edcc13d1 904
mluis 1:d3b7bde3995c 905 static void runReset (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 906 // Disable session
mluis 1:d3b7bde3995c 907 LMIC_reset();
mluis 1:d3b7bde3995c 908 LMIC_startJoining();
mluis 1:d3b7bde3995c 909 reportEvent(EV_RESET);
mluis 1:d3b7bde3995c 910 }
mluis 1:d3b7bde3995c 911
mluis 0:62d1edcc13d1 912 static void stateJustJoined (void) {
mluis 0:62d1edcc13d1 913 LMIC.seqnoDn = LMIC.seqnoUp = 0;
mluis 0:62d1edcc13d1 914 LMIC.rejoinCnt = 0;
mluis 0:62d1edcc13d1 915 LMIC.dnConf = LMIC.adrChanged = LMIC.ladrAns = LMIC.devsAns = 0;
mluis 0:62d1edcc13d1 916 LMIC.moreData = LMIC.dn2Ans = LMIC.snchAns = LMIC.dutyCapAns = 0;
mluis 0:62d1edcc13d1 917 LMIC.pingSetAns = 0;
mluis 0:62d1edcc13d1 918 LMIC.upRepeat = 0;
mluis 0:62d1edcc13d1 919 LMIC.adrAckReq = LINK_CHECK_INIT;
mluis 0:62d1edcc13d1 920 LMIC.dn2Dr = DR_DNW2;
mluis 0:62d1edcc13d1 921 LMIC.dn2Freq = FREQ_DNW2;
mluis 0:62d1edcc13d1 922 LMIC.bcnChnl = CHNL_BCN;
mluis 0:62d1edcc13d1 923 LMIC.ping.freq = FREQ_PING;
mluis 0:62d1edcc13d1 924 LMIC.ping.dr = DR_PING;
mluis 0:62d1edcc13d1 925 }
mluis 0:62d1edcc13d1 926
mluis 0:62d1edcc13d1 927
mluis 0:62d1edcc13d1 928 // ================================================================================
mluis 0:62d1edcc13d1 929 // Decoding frames
mluis 0:62d1edcc13d1 930
mluis 0:62d1edcc13d1 931
mluis 0:62d1edcc13d1 932 // Decode beacon - do not overwrite bcninfo unless we have a match!
mluis 0:62d1edcc13d1 933 static int decodeBeacon (void) {
mluis 0:62d1edcc13d1 934 ASSERT(LMIC.dataLen == LEN_BCN); // implicit header RX guarantees this
mluis 0:62d1edcc13d1 935 xref2u1_t d = LMIC.frame;
mluis 1:d3b7bde3995c 936 if(
mluis 1:d3b7bde3995c 937 #if CFG_eu868
mluis 1:d3b7bde3995c 938 d[OFF_BCN_CRC1] != (u1_t)os_crc16(d,OFF_BCN_CRC1)
mluis 1:d3b7bde3995c 939 #elif CFG_us915
mluis 1:d3b7bde3995c 940 os_rlsbf2(&d[OFF_BCN_CRC1]) != os_crc16(d,OFF_BCN_CRC1)
mluis 1:d3b7bde3995c 941 #endif
mluis 1:d3b7bde3995c 942 )
mluis 1:d3b7bde3995c 943 return 0; // first (common) part fails CRC check
mluis 0:62d1edcc13d1 944 // First set of fields is ok
mluis 0:62d1edcc13d1 945 u4_t bcnnetid = os_rlsbf4(&d[OFF_BCN_NETID]) & 0xFFFFFF;
mluis 0:62d1edcc13d1 946 if( bcnnetid != LMIC.netid )
mluis 1:d3b7bde3995c 947 return -1; // not the beacon we're looking for
mluis 0:62d1edcc13d1 948
mluis 0:62d1edcc13d1 949 LMIC.bcninfo.flags &= ~(BCN_PARTIAL|BCN_FULL);
mluis 0:62d1edcc13d1 950 // Match - update bcninfo structure
mluis 1:d3b7bde3995c 951 LMIC.bcninfo.snr = LMIC.snr;
mluis 1:d3b7bde3995c 952 LMIC.bcninfo.rssi = LMIC.rssi;
mluis 0:62d1edcc13d1 953 LMIC.bcninfo.txtime = LMIC.rxtime - AIRTIME_BCN_osticks;
mluis 0:62d1edcc13d1 954 LMIC.bcninfo.time = os_rlsbf4(&d[OFF_BCN_TIME]);
mluis 0:62d1edcc13d1 955 LMIC.bcninfo.flags |= BCN_PARTIAL;
mluis 0:62d1edcc13d1 956
mluis 0:62d1edcc13d1 957 // Check 2nd set
mluis 0:62d1edcc13d1 958 if( os_rlsbf2(&d[OFF_BCN_CRC2]) != os_crc16(d,OFF_BCN_CRC2) )
mluis 1:d3b7bde3995c 959 return 1;
mluis 0:62d1edcc13d1 960 // Second set of fields is ok
mluis 0:62d1edcc13d1 961 LMIC.bcninfo.lat = (s4_t)os_rlsbf4(&d[OFF_BCN_LAT-1]) >> 8; // read as signed 24-bit
mluis 0:62d1edcc13d1 962 LMIC.bcninfo.lon = (s4_t)os_rlsbf4(&d[OFF_BCN_LON-1]) >> 8; // ditto
mluis 0:62d1edcc13d1 963 LMIC.bcninfo.info = d[OFF_BCN_INFO];
mluis 0:62d1edcc13d1 964 LMIC.bcninfo.flags |= BCN_FULL;
mluis 0:62d1edcc13d1 965 return 2;
mluis 0:62d1edcc13d1 966 }
mluis 0:62d1edcc13d1 967
mluis 0:62d1edcc13d1 968
mluis 0:62d1edcc13d1 969 static bit_t decodeFrame (void) {
pnysten 2:bebd6b2e3d18 970 debug_str("decodeFrame: ");
pnysten 2:bebd6b2e3d18 971 debug_buf(LMIC.frame, LMIC.dataLen);
mluis 0:62d1edcc13d1 972 xref2u1_t d = LMIC.frame;
mluis 0:62d1edcc13d1 973 u1_t hdr = d[0];
mluis 0:62d1edcc13d1 974 u1_t ftype = hdr & HDR_FTYPE;
mluis 0:62d1edcc13d1 975 int dlen = LMIC.dataLen;
mluis 0:62d1edcc13d1 976 if( dlen < OFF_DAT_OPTS+4 ||
mluis 1:d3b7bde3995c 977 (hdr & HDR_MAJOR) != HDR_MAJOR_V1 ||
mluis 1:d3b7bde3995c 978 (ftype != HDR_FTYPE_DADN && ftype != HDR_FTYPE_DCDN) ) {
mluis 1:d3b7bde3995c 979 // Basic sanity checks failed
mluis 1:d3b7bde3995c 980 EV(specCond, WARN, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
mluis 1:d3b7bde3995c 981 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 982 e_.info = dlen < 4 ? 0 : os_rlsbf4(&d[dlen-4]),
mluis 1:d3b7bde3995c 983 e_.info2 = hdr + (dlen<<8)));
mluis 0:62d1edcc13d1 984 norx:
mluis 1:d3b7bde3995c 985 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 986 return 0;
mluis 0:62d1edcc13d1 987 }
mluis 0:62d1edcc13d1 988 // Validate exact frame length
mluis 0:62d1edcc13d1 989 // Note: device address was already read+evaluated in order to arrive here.
mluis 0:62d1edcc13d1 990 int fct = d[OFF_DAT_FCT];
mluis 0:62d1edcc13d1 991 u4_t addr = os_rlsbf4(&d[OFF_DAT_ADDR]);
mluis 0:62d1edcc13d1 992 u4_t seqno = os_rlsbf2(&d[OFF_DAT_SEQNO]);
mluis 0:62d1edcc13d1 993 int olen = fct & FCT_OPTLEN;
mluis 0:62d1edcc13d1 994 int ackup = (fct & FCT_ACK) != 0 ? 1 : 0; // ACK last up frame
mluis 0:62d1edcc13d1 995 int poff = OFF_DAT_OPTS+olen;
mluis 0:62d1edcc13d1 996 int pend = dlen-4; // MIC
pnysten 2:bebd6b2e3d18 997
pnysten 2:bebd6b2e3d18 998 debug_val("fct: ", fct);
pnysten 2:bebd6b2e3d18 999 debug_val("olen: ", olen);
mluis 0:62d1edcc13d1 1000
mluis 0:62d1edcc13d1 1001 if( addr != LMIC.devaddr ) {
mluis 1:d3b7bde3995c 1002 EV(specCond, WARN, (e_.reason = EV::specCond_t::ALIEN_ADDRESS,
mluis 1:d3b7bde3995c 1003 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1004 e_.info = addr,
mluis 1:d3b7bde3995c 1005 e_.info2 = LMIC.devaddr));
mluis 1:d3b7bde3995c 1006 goto norx;
mluis 0:62d1edcc13d1 1007 }
mluis 0:62d1edcc13d1 1008 if( poff > pend ) {
mluis 1:d3b7bde3995c 1009 EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
mluis 1:d3b7bde3995c 1010 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1011 e_.info = 0x1000000 + (poff-pend) + (fct<<8) + (dlen<<16)));
mluis 1:d3b7bde3995c 1012 goto norx;
mluis 0:62d1edcc13d1 1013 }
mluis 0:62d1edcc13d1 1014
mluis 0:62d1edcc13d1 1015 int port = -1;
mluis 0:62d1edcc13d1 1016 int replayConf = 0;
mluis 0:62d1edcc13d1 1017
mluis 0:62d1edcc13d1 1018 if( pend > poff )
mluis 1:d3b7bde3995c 1019 port = d[poff++];
mluis 0:62d1edcc13d1 1020 seqno = LMIC.seqnoDn + (u2_t)(seqno - LMIC.seqnoDn);
mluis 0:62d1edcc13d1 1021
mluis 0:62d1edcc13d1 1022 if( !aes_verifyMic(LMIC.nwkKey, LMIC.devaddr, seqno, /*dn*/1, d, pend) ) {
mluis 1:d3b7bde3995c 1023 EV(spe3Cond, ERR, (e_.reason = EV::spe3Cond_t::CORRUPTED_MIC,
mluis 1:d3b7bde3995c 1024 e_.eui1 = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1025 e_.info1 = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1026 e_.info2 = seqno,
mluis 1:d3b7bde3995c 1027 e_.info3 = LMIC.devaddr));
mluis 0:62d1edcc13d1 1028 goto norx;
mluis 0:62d1edcc13d1 1029 }
mluis 1:d3b7bde3995c 1030 if( seqno < LMIC.seqnoDn ) {
mluis 1:d3b7bde3995c 1031 if( (s4_t)seqno > (s4_t)LMIC.seqnoDn ) {
mluis 1:d3b7bde3995c 1032 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
mluis 1:d3b7bde3995c 1033 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1034 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 1035 e_.info2 = seqno));
mluis 1:d3b7bde3995c 1036 goto norx;
mluis 1:d3b7bde3995c 1037 }
mluis 1:d3b7bde3995c 1038 if( seqno != LMIC.seqnoDn-1 || !LMIC.dnConf || ftype != HDR_FTYPE_DCDN ) {
mluis 1:d3b7bde3995c 1039 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_OBSOLETE,
mluis 1:d3b7bde3995c 1040 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1041 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 1042 e_.info2 = seqno));
mluis 1:d3b7bde3995c 1043 goto norx;
mluis 1:d3b7bde3995c 1044 }
mluis 1:d3b7bde3995c 1045 // Replay of previous sequence number allowed only if
mluis 1:d3b7bde3995c 1046 // previous frame and repeated both requested confirmation
mluis 1:d3b7bde3995c 1047 replayConf = 1;
mluis 0:62d1edcc13d1 1048 }
mluis 0:62d1edcc13d1 1049 else {
mluis 1:d3b7bde3995c 1050 if( seqno > LMIC.seqnoDn ) {
mluis 1:d3b7bde3995c 1051 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_SKIP,
mluis 1:d3b7bde3995c 1052 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1053 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 1054 e_.info2 = seqno));
mluis 1:d3b7bde3995c 1055 }
mluis 1:d3b7bde3995c 1056 LMIC.seqnoDn = seqno+1; // next number to be expected
mluis 1:d3b7bde3995c 1057 DO_DEVDB(LMIC.seqnoDn,seqnoDn);
mluis 1:d3b7bde3995c 1058 // DN frame requested confirmation - provide ACK once with next UP frame
mluis 1:d3b7bde3995c 1059 LMIC.dnConf = (ftype == HDR_FTYPE_DCDN ? FCT_ACK : 0);
mluis 0:62d1edcc13d1 1060 }
mluis 0:62d1edcc13d1 1061
mluis 0:62d1edcc13d1 1062 if( LMIC.dnConf || (fct & FCT_MORE) )
mluis 1:d3b7bde3995c 1063 LMIC.opmode |= OP_POLL;
mluis 0:62d1edcc13d1 1064
mluis 0:62d1edcc13d1 1065 // We heard from network
mluis 1:d3b7bde3995c 1066 LMIC.adrChanged = LMIC.rejoinCnt = 0;
mluis 1:d3b7bde3995c 1067 if( LMIC.adrAckReq != LINK_CHECK_OFF )
mluis 1:d3b7bde3995c 1068 LMIC.adrAckReq = LINK_CHECK_INIT;
mluis 0:62d1edcc13d1 1069
mluis 0:62d1edcc13d1 1070 // Process OPTS
mluis 1:d3b7bde3995c 1071 int m = LMIC.rssi - RSSI_OFF - getSensitivity(LMIC.rps);
mluis 0:62d1edcc13d1 1072 LMIC.margin = m < 0 ? 0 : m > 254 ? 254 : m;
mluis 0:62d1edcc13d1 1073
mluis 0:62d1edcc13d1 1074 xref2u1_t opts = &d[OFF_DAT_OPTS];
mluis 0:62d1edcc13d1 1075 int oidx = 0;
pnysten 2:bebd6b2e3d18 1076 debug_val("Port: ", port);
mluis 0:62d1edcc13d1 1077 while( oidx < olen ) {
pnysten 2:bebd6b2e3d18 1078 // debug_str("Port: ");
pnysten 2:bebd6b2e3d18 1079 debug_str("Process OPTS...");
pnysten 2:bebd6b2e3d18 1080 debug_hex(opts[oidx]);
pnysten 2:bebd6b2e3d18 1081 debug_str("\r\n");
mluis 1:d3b7bde3995c 1082 switch( opts[oidx] ) {
mluis 1:d3b7bde3995c 1083 case MCMD_LCHK_ANS: {
pnysten 2:bebd6b2e3d18 1084 debug_str("MCMD_LCHK_ANS\r\n");
mluis 1:d3b7bde3995c 1085 //int gwmargin = opts[oidx+1];
mluis 1:d3b7bde3995c 1086 //int ngws = opts[oidx+2];
mluis 1:d3b7bde3995c 1087 oidx += 3;
mluis 1:d3b7bde3995c 1088 continue;
mluis 1:d3b7bde3995c 1089 }
mluis 1:d3b7bde3995c 1090 case MCMD_LADR_REQ: {
pnysten 2:bebd6b2e3d18 1091 debug_str("MCMD_LADR_REQ\r\n");
mluis 1:d3b7bde3995c 1092 u1_t p1 = opts[oidx+1]; // txpow + DR
mluis 1:d3b7bde3995c 1093 u2_t chmap = os_rlsbf2(&opts[oidx+2]);// list of enabled channels
mluis 1:d3b7bde3995c 1094 u1_t chpage = opts[oidx+4] & MCMD_LADR_CHPAGE_MASK; // channel page
mluis 1:d3b7bde3995c 1095 u1_t uprpt = opts[oidx+4] & MCMD_LADR_REPEAT_MASK; // up repeat count
mluis 1:d3b7bde3995c 1096 oidx += 5;
mluis 0:62d1edcc13d1 1097
mluis 1:d3b7bde3995c 1098 LMIC.ladrAns = 0x80 | // Include an answer into next frame up
mluis 1:d3b7bde3995c 1099 MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK;
mluis 1:d3b7bde3995c 1100 if( !mapChannels(chpage, chmap) )
mluis 1:d3b7bde3995c 1101 LMIC.ladrAns &= ~MCMD_LADR_ANS_CHACK;
mluis 1:d3b7bde3995c 1102 dr_t dr = (dr_t)(p1>>MCMD_LADR_DR_SHIFT);
mluis 1:d3b7bde3995c 1103 if( !validDR(dr) ) {
mluis 1:d3b7bde3995c 1104 LMIC.ladrAns &= ~MCMD_LADR_ANS_DRACK;
mluis 1:d3b7bde3995c 1105 EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
mluis 1:d3b7bde3995c 1106 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1107 e_.info = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1108 e_.info2 = Base::msbf4(&opts[oidx-4])));
mluis 1:d3b7bde3995c 1109 }
mluis 1:d3b7bde3995c 1110 if( (LMIC.ladrAns & 0x7F) == (MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK) ) {
mluis 1:d3b7bde3995c 1111 // Nothing went wrong - use settings
mluis 1:d3b7bde3995c 1112 LMIC.upRepeat = uprpt;
mluis 1:d3b7bde3995c 1113 setDrTxpow(DRCHG_NWKCMD, dr, pow2dBm(p1));
mluis 1:d3b7bde3995c 1114 }
mluis 1:d3b7bde3995c 1115 LMIC.adrChanged = 1; // Trigger an ACK to NWK
pnysten 2:bebd6b2e3d18 1116
pnysten 2:bebd6b2e3d18 1117 debug_str("decodeFrame: ");
pnysten 2:bebd6b2e3d18 1118 debug_buf(LMIC.frame, LMIC.dataLen);
pnysten 2:bebd6b2e3d18 1119
mluis 1:d3b7bde3995c 1120 continue;
mluis 0:62d1edcc13d1 1121 }
mluis 1:d3b7bde3995c 1122 case MCMD_DEVS_REQ: {
pnysten 2:bebd6b2e3d18 1123 debug_str("DEVS_REQ\r\n");
mluis 1:d3b7bde3995c 1124 LMIC.devsAns = 1;
mluis 1:d3b7bde3995c 1125 oidx += 1;
mluis 1:d3b7bde3995c 1126 continue;
mluis 1:d3b7bde3995c 1127 }
mluis 1:d3b7bde3995c 1128 case MCMD_DN2P_SET: {
pnysten 2:bebd6b2e3d18 1129 debug_str("MCMD_DN2P_SET\r\n");
mluis 1:d3b7bde3995c 1130 dr_t dr = (dr_t)(opts[oidx+1] & 0x0F);
mluis 1:d3b7bde3995c 1131 u4_t freq = convFreq(&opts[oidx+2]);
mluis 1:d3b7bde3995c 1132 oidx += 5;
mluis 1:d3b7bde3995c 1133 LMIC.dn2Ans = 0x80; // answer pending
mluis 1:d3b7bde3995c 1134 if( validDR(dr) )
mluis 1:d3b7bde3995c 1135 LMIC.dn2Ans |= MCMD_DN2P_ANS_DRACK;
mluis 1:d3b7bde3995c 1136 if( freq != 0 )
mluis 1:d3b7bde3995c 1137 LMIC.dn2Ans |= MCMD_DN2P_ANS_CHACK;
mluis 1:d3b7bde3995c 1138 if( LMIC.dn2Ans == (0x80|MCMD_DN2P_ANS_DRACK|MCMD_DN2P_ANS_CHACK) ) {
mluis 1:d3b7bde3995c 1139 LMIC.dn2Dr = dr;
mluis 1:d3b7bde3995c 1140 LMIC.dn2Freq = freq;
mluis 1:d3b7bde3995c 1141 DO_DEVDB(LMIC.dn2Dr,dn2Dr);
mluis 1:d3b7bde3995c 1142 DO_DEVDB(LMIC.dn2Freq,dn2Freq);
mluis 1:d3b7bde3995c 1143 }
mluis 1:d3b7bde3995c 1144 continue;
mluis 0:62d1edcc13d1 1145 }
mluis 1:d3b7bde3995c 1146 case MCMD_DCAP_REQ: {
pnysten 2:bebd6b2e3d18 1147 debug_str("MCMD_DCAP_REQ\r\n");
mluis 1:d3b7bde3995c 1148 u1_t cap = opts[oidx+1];
mluis 1:d3b7bde3995c 1149 oidx += 2;
mluis 1:d3b7bde3995c 1150 // A value cap=0xFF means device is OFF unless enabled again manually.
mluis 1:d3b7bde3995c 1151 if( cap==0xFF )
mluis 1:d3b7bde3995c 1152 LMIC.opmode |= OP_SHUTDOWN; // stop any sending
mluis 1:d3b7bde3995c 1153 LMIC.globalDutyRate = cap & 0xF;
mluis 1:d3b7bde3995c 1154 LMIC.globalDutyAvail = os_getTime();
mluis 1:d3b7bde3995c 1155 DO_DEVDB(cap,dutyCap);
mluis 1:d3b7bde3995c 1156 LMIC.dutyCapAns = 1;
mluis 1:d3b7bde3995c 1157 continue;
mluis 1:d3b7bde3995c 1158 }
mluis 1:d3b7bde3995c 1159 case MCMD_SNCH_REQ: {
pnysten 2:bebd6b2e3d18 1160 debug_str("MCMD_SNCH_REQ\r\n");
mluis 1:d3b7bde3995c 1161 u1_t chidx = opts[oidx+1]; // channel
mluis 1:d3b7bde3995c 1162 u4_t freq = convFreq(&opts[oidx+2]); // freq
mluis 1:d3b7bde3995c 1163 u1_t drs = opts[oidx+5]; // datarate span
mluis 1:d3b7bde3995c 1164 LMIC.snchAns = 0x80;
mluis 1:d3b7bde3995c 1165 if( freq != 0 && LMIC_setupChannel(chidx, freq, DR_RANGE_MAP(drs&0xF,drs>>4), -1) )
mluis 1:d3b7bde3995c 1166 LMIC.snchAns |= MCMD_SNCH_ANS_DRACK|MCMD_SNCH_ANS_FQACK;
mluis 1:d3b7bde3995c 1167 oidx += 6;
mluis 1:d3b7bde3995c 1168 continue;
mluis 0:62d1edcc13d1 1169 }
mluis 1:d3b7bde3995c 1170 case MCMD_PING_SET: {
pnysten 2:bebd6b2e3d18 1171 debug_str("MCMD_PING_SET\r\n");
mluis 1:d3b7bde3995c 1172 u4_t freq = convFreq(&opts[oidx+1]);
mluis 1:d3b7bde3995c 1173 oidx += 4;
mluis 1:d3b7bde3995c 1174 u1_t flags = 0x80;
mluis 1:d3b7bde3995c 1175 if( freq != 0 ) {
mluis 1:d3b7bde3995c 1176 flags |= MCMD_PING_ANS_FQACK;
mluis 1:d3b7bde3995c 1177 LMIC.ping.freq = freq;
mluis 1:d3b7bde3995c 1178 DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
mluis 1:d3b7bde3995c 1179 DO_DEVDB(LMIC.ping.freq, pingFreq);
mluis 1:d3b7bde3995c 1180 DO_DEVDB(LMIC.ping.dr, pingDr);
mluis 1:d3b7bde3995c 1181 }
mluis 1:d3b7bde3995c 1182 LMIC.pingSetAns = flags;
mluis 1:d3b7bde3995c 1183 continue;
mluis 1:d3b7bde3995c 1184 }
mluis 1:d3b7bde3995c 1185 case MCMD_BCNI_ANS: {
pnysten 2:bebd6b2e3d18 1186 debug_str("MCMD_BCNI_ANS\r\n");
mluis 1:d3b7bde3995c 1187 // Ignore if tracking already enabled
mluis 1:d3b7bde3995c 1188 if( (LMIC.opmode & OP_TRACK) == 0 ) {
mluis 1:d3b7bde3995c 1189 LMIC.bcnChnl = opts[oidx+3];
mluis 1:d3b7bde3995c 1190 // Enable tracking - bcninfoTries
mluis 1:d3b7bde3995c 1191 LMIC.opmode |= OP_TRACK;
mluis 1:d3b7bde3995c 1192 // Cleared later in txComplete handling - triggers EV_BEACON_FOUND
mluis 1:d3b7bde3995c 1193 ASSERT(LMIC.bcninfoTries!=0);
mluis 1:d3b7bde3995c 1194 // Setup RX parameters
mluis 1:d3b7bde3995c 1195 LMIC.bcninfo.txtime = (LMIC.rxtime
mluis 1:d3b7bde3995c 1196 + ms2osticks(os_rlsbf2(&opts[oidx+1]) * MCMD_BCNI_TUNIT)
mluis 1:d3b7bde3995c 1197 + ms2osticksCeil(MCMD_BCNI_TUNIT/2)
mluis 1:d3b7bde3995c 1198 - BCN_INTV_osticks);
mluis 1:d3b7bde3995c 1199 LMIC.bcninfo.flags = 0; // txtime above cannot be used as reference (BCN_PARTIAL|BCN_FULL cleared)
mluis 1:d3b7bde3995c 1200 calcBcnRxWindowFromMillis(MCMD_BCNI_TUNIT,1); // error of +/-N ms
mluis 0:62d1edcc13d1 1201
mluis 1:d3b7bde3995c 1202 EV(lostFrame, INFO, (e_.reason = EV::lostFrame_t::MCMD_BCNI_ANS,
mluis 1:d3b7bde3995c 1203 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1204 e_.lostmic = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1205 e_.info = (LMIC.missedBcns |
mluis 1:d3b7bde3995c 1206 (osticks2us(LMIC.bcninfo.txtime + BCN_INTV_osticks
mluis 1:d3b7bde3995c 1207 - LMIC.bcnRxtime) << 8)),
mluis 1:d3b7bde3995c 1208 e_.time = MAIN::CDEV->ostime2ustime(LMIC.bcninfo.txtime + BCN_INTV_osticks)));
mluis 1:d3b7bde3995c 1209 }
mluis 1:d3b7bde3995c 1210 oidx += 4;
mluis 1:d3b7bde3995c 1211 continue;
mluis 0:62d1edcc13d1 1212 }
mluis 1:d3b7bde3995c 1213 }
mluis 1:d3b7bde3995c 1214 EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
mluis 1:d3b7bde3995c 1215 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1216 e_.info = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1217 e_.info2 = Base::msbf4(&opts[oidx])));
mluis 1:d3b7bde3995c 1218 break;
mluis 0:62d1edcc13d1 1219 }
pnysten 2:bebd6b2e3d18 1220
mluis 0:62d1edcc13d1 1221 if( oidx != olen ) {
mluis 1:d3b7bde3995c 1222 EV(specCond, ERR, (e_.reason = EV::specCond_t::CORRUPTED_FRAME,
mluis 1:d3b7bde3995c 1223 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1224 e_.info = 0x1000000 + (oidx) + (olen<<8)));
mluis 0:62d1edcc13d1 1225 }
mluis 0:62d1edcc13d1 1226
mluis 0:62d1edcc13d1 1227 if( !replayConf ) {
mluis 1:d3b7bde3995c 1228 // Handle payload only if not a replay
mluis 1:d3b7bde3995c 1229 // Decrypt payload - if any
pnysten 3:1079dc4b4c59 1230
pnysten 3:1079dc4b4c59 1231 //if( port >= 0 && pend-poff > 0 )
pnysten 3:1079dc4b4c59 1232 //aes_cipher(port <= 0 ? LMIC.nwkKey : LMIC.artKey, LMIC.devaddr, seqno, /*dn*/1, d+poff, pend-poff);
pnysten 3:1079dc4b4c59 1233
pnysten 3:1079dc4b4c59 1234 if( port == 0 && pend-poff > 0 )
pnysten 3:1079dc4b4c59 1235 {
pnysten 3:1079dc4b4c59 1236 debug_str("Payload decrypting...\r\n");
mluis 1:d3b7bde3995c 1237 aes_cipher(port <= 0 ? LMIC.nwkKey : LMIC.artKey, LMIC.devaddr, seqno, /*dn*/1, d+poff, pend-poff);
pnysten 3:1079dc4b4c59 1238 }
pnysten 3:1079dc4b4c59 1239
mluis 1:d3b7bde3995c 1240 EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1241 e_.devaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1242 e_.seqno = seqno,
mluis 1:d3b7bde3995c 1243 e_.flags = (port < 0 ? EV::dfinfo_t::NOPORT : 0) | EV::dfinfo_t::DN,
mluis 1:d3b7bde3995c 1244 e_.mic = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1245 e_.hdr = d[LORA::OFF_DAT_HDR],
mluis 1:d3b7bde3995c 1246 e_.fct = d[LORA::OFF_DAT_FCT],
mluis 1:d3b7bde3995c 1247 e_.port = port,
mluis 1:d3b7bde3995c 1248 e_.plen = dlen,
mluis 1:d3b7bde3995c 1249 e_.opts.length = olen,
mluis 1:d3b7bde3995c 1250 memcpy(&e_.opts[0], opts, olen)));
mluis 0:62d1edcc13d1 1251 } else {
mluis 1:d3b7bde3995c 1252 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_REPLAY,
mluis 1:d3b7bde3995c 1253 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1254 e_.info = Base::lsbf4(&d[pend]),
mluis 1:d3b7bde3995c 1255 e_.info2 = seqno));
mluis 0:62d1edcc13d1 1256 }
mluis 0:62d1edcc13d1 1257
mluis 0:62d1edcc13d1 1258 if( // NWK acks but we don't have a frame pending
mluis 1:d3b7bde3995c 1259 (ackup && LMIC.txCnt == 0) ||
mluis 1:d3b7bde3995c 1260 // We sent up confirmed and we got a response in DNW1/DNW2
mluis 1:d3b7bde3995c 1261 // BUT it did not carry an ACK - this should never happen
mluis 1:d3b7bde3995c 1262 // Do not resend and assume frame was not ACKed.
mluis 1:d3b7bde3995c 1263 (!ackup && LMIC.txCnt != 0) ) {
mluis 1:d3b7bde3995c 1264 EV(specCond, ERR, (e_.reason = EV::specCond_t::SPURIOUS_ACK,
mluis 1:d3b7bde3995c 1265 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1266 e_.info = seqno,
mluis 1:d3b7bde3995c 1267 e_.info2 = ackup));
mluis 0:62d1edcc13d1 1268 }
mluis 0:62d1edcc13d1 1269
mluis 0:62d1edcc13d1 1270 if( LMIC.txCnt != 0 ) // we requested an ACK
mluis 1:d3b7bde3995c 1271 LMIC.txrxFlags |= ackup ? TXRX_ACK : TXRX_NACK;
mluis 0:62d1edcc13d1 1272
mluis 0:62d1edcc13d1 1273 if( port < 0 ) {
mluis 1:d3b7bde3995c 1274 LMIC.txrxFlags |= TXRX_NOPORT;
mluis 1:d3b7bde3995c 1275 LMIC.dataBeg = poff;
mluis 1:d3b7bde3995c 1276 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1277 } else {
mluis 1:d3b7bde3995c 1278 LMIC.txrxFlags |= TXRX_PORT;
mluis 1:d3b7bde3995c 1279 LMIC.dataBeg = poff;
mluis 1:d3b7bde3995c 1280 LMIC.dataLen = pend-poff;
mluis 0:62d1edcc13d1 1281 }
pnysten 2:bebd6b2e3d18 1282 debug_str("decodeFrame End: ");
pnysten 2:bebd6b2e3d18 1283 debug_buf(LMIC.frame, LMIC.dataLen);
pnysten 2:bebd6b2e3d18 1284
pnysten 2:bebd6b2e3d18 1285 // PANY
pnysten 2:bebd6b2e3d18 1286 if ((port == 0) && (olen == 0))
pnysten 2:bebd6b2e3d18 1287 {
pnysten 2:bebd6b2e3d18 1288 oidx = 0;
pnysten 2:bebd6b2e3d18 1289 olen = LMIC.dataLen;
pnysten 2:bebd6b2e3d18 1290 debug_str("Port 0!!!\r\n");
pnysten 2:bebd6b2e3d18 1291 opts = LMIC.frame + LMIC.dataBeg;
pnysten 2:bebd6b2e3d18 1292
pnysten 2:bebd6b2e3d18 1293 debug_val("Data Len: ", LMIC.dataLen);
pnysten 2:bebd6b2e3d18 1294 while( oidx < olen ) {
pnysten 2:bebd6b2e3d18 1295 // debug_str("Port: ");
pnysten 2:bebd6b2e3d18 1296 debug_str("Process OPTS...");
pnysten 2:bebd6b2e3d18 1297 debug_hex(opts[oidx]);
pnysten 2:bebd6b2e3d18 1298 debug_str("\r\n");
pnysten 2:bebd6b2e3d18 1299 switch( opts[oidx] ) {
pnysten 2:bebd6b2e3d18 1300 case MCMD_LCHK_ANS: {
pnysten 2:bebd6b2e3d18 1301 debug_str("MCMD_LCHK_ANS\r\n");
pnysten 2:bebd6b2e3d18 1302 //int gwmargin = opts[oidx+1];
pnysten 2:bebd6b2e3d18 1303 //int ngws = opts[oidx+2];
pnysten 2:bebd6b2e3d18 1304 oidx += 3;
pnysten 2:bebd6b2e3d18 1305 continue;
pnysten 2:bebd6b2e3d18 1306 }
pnysten 2:bebd6b2e3d18 1307 case MCMD_LADR_REQ: {
pnysten 2:bebd6b2e3d18 1308 debug_str("MCMD_LADR_REQ\r\n");
pnysten 2:bebd6b2e3d18 1309 u1_t p1 = opts[oidx+1]; // txpow + DR
pnysten 2:bebd6b2e3d18 1310 u2_t chmap = os_rlsbf2(&opts[oidx+2]);// list of enabled channels
pnysten 2:bebd6b2e3d18 1311 u1_t chpage = opts[oidx+4] & MCMD_LADR_CHPAGE_MASK; // channel page
pnysten 2:bebd6b2e3d18 1312 u1_t uprpt = opts[oidx+4] & MCMD_LADR_REPEAT_MASK; // up repeat count
pnysten 2:bebd6b2e3d18 1313 oidx += 5;
pnysten 2:bebd6b2e3d18 1314
pnysten 2:bebd6b2e3d18 1315 LMIC.ladrAns = 0x80 | // Include an answer into next frame up
pnysten 2:bebd6b2e3d18 1316 MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK;
pnysten 2:bebd6b2e3d18 1317 if( !mapChannels(chpage, chmap) )
pnysten 2:bebd6b2e3d18 1318 LMIC.ladrAns &= ~MCMD_LADR_ANS_CHACK;
pnysten 2:bebd6b2e3d18 1319 dr_t dr = (dr_t)(p1>>MCMD_LADR_DR_SHIFT);
pnysten 2:bebd6b2e3d18 1320 if( !validDR(dr) ) {
pnysten 2:bebd6b2e3d18 1321 LMIC.ladrAns &= ~MCMD_LADR_ANS_DRACK;
pnysten 2:bebd6b2e3d18 1322 EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
pnysten 2:bebd6b2e3d18 1323 e_.eui = MAIN::CDEV->getEui(),
pnysten 2:bebd6b2e3d18 1324 e_.info = Base::lsbf4(&d[pend]),
pnysten 2:bebd6b2e3d18 1325 e_.info2 = Base::msbf4(&opts[oidx-4])));
pnysten 2:bebd6b2e3d18 1326 }
pnysten 2:bebd6b2e3d18 1327 if( (LMIC.ladrAns & 0x7F) == (MCMD_LADR_ANS_POWACK | MCMD_LADR_ANS_CHACK | MCMD_LADR_ANS_DRACK) ) {
pnysten 2:bebd6b2e3d18 1328 // Nothing went wrong - use settings
pnysten 2:bebd6b2e3d18 1329 LMIC.upRepeat = uprpt;
pnysten 2:bebd6b2e3d18 1330 setDrTxpow(DRCHG_NWKCMD, dr, pow2dBm(p1));
pnysten 2:bebd6b2e3d18 1331 }
pnysten 2:bebd6b2e3d18 1332 LMIC.adrChanged = 1; // Trigger an ACK to NWK
pnysten 2:bebd6b2e3d18 1333
pnysten 2:bebd6b2e3d18 1334 debug_str("decodeFrame: ");
pnysten 2:bebd6b2e3d18 1335 debug_buf(LMIC.frame, LMIC.dataLen);
pnysten 2:bebd6b2e3d18 1336
pnysten 2:bebd6b2e3d18 1337 continue;
pnysten 2:bebd6b2e3d18 1338 }
pnysten 2:bebd6b2e3d18 1339 case MCMD_DEVS_REQ: {
pnysten 2:bebd6b2e3d18 1340 debug_str("DEVS_REQ\r\n");
pnysten 2:bebd6b2e3d18 1341 LMIC.devsAns = 1;
pnysten 2:bebd6b2e3d18 1342 oidx += 1;
pnysten 2:bebd6b2e3d18 1343 continue;
pnysten 2:bebd6b2e3d18 1344 }
pnysten 2:bebd6b2e3d18 1345 case MCMD_DN2P_SET: {
pnysten 2:bebd6b2e3d18 1346 debug_str("MCMD_DN2P_SET\r\n");
pnysten 2:bebd6b2e3d18 1347 dr_t dr = (dr_t)(opts[oidx+1] & 0x0F);
pnysten 2:bebd6b2e3d18 1348 u4_t freq = convFreq(&opts[oidx+2]);
pnysten 2:bebd6b2e3d18 1349 oidx += 5;
pnysten 2:bebd6b2e3d18 1350 LMIC.dn2Ans = 0x80; // answer pending
pnysten 2:bebd6b2e3d18 1351 if( validDR(dr) )
pnysten 2:bebd6b2e3d18 1352 LMIC.dn2Ans |= MCMD_DN2P_ANS_DRACK;
pnysten 2:bebd6b2e3d18 1353 if( freq != 0 )
pnysten 2:bebd6b2e3d18 1354 LMIC.dn2Ans |= MCMD_DN2P_ANS_CHACK;
pnysten 2:bebd6b2e3d18 1355 if( LMIC.dn2Ans == (0x80|MCMD_DN2P_ANS_DRACK|MCMD_DN2P_ANS_CHACK) ) {
pnysten 2:bebd6b2e3d18 1356 LMIC.dn2Dr = dr;
pnysten 2:bebd6b2e3d18 1357 LMIC.dn2Freq = freq;
pnysten 2:bebd6b2e3d18 1358 DO_DEVDB(LMIC.dn2Dr,dn2Dr);
pnysten 2:bebd6b2e3d18 1359 DO_DEVDB(LMIC.dn2Freq,dn2Freq);
pnysten 2:bebd6b2e3d18 1360 }
pnysten 2:bebd6b2e3d18 1361 continue;
pnysten 2:bebd6b2e3d18 1362 }
pnysten 2:bebd6b2e3d18 1363 case MCMD_DCAP_REQ: {
pnysten 2:bebd6b2e3d18 1364 debug_str("MCMD_DCAP_REQ\r\n");
pnysten 2:bebd6b2e3d18 1365 u1_t cap = opts[oidx+1];
pnysten 2:bebd6b2e3d18 1366 oidx += 2;
pnysten 2:bebd6b2e3d18 1367 // A value cap=0xFF means device is OFF unless enabled again manually.
pnysten 2:bebd6b2e3d18 1368 if( cap==0xFF )
pnysten 2:bebd6b2e3d18 1369 LMIC.opmode |= OP_SHUTDOWN; // stop any sending
pnysten 2:bebd6b2e3d18 1370 LMIC.globalDutyRate = cap & 0xF;
pnysten 2:bebd6b2e3d18 1371 LMIC.globalDutyAvail = os_getTime();
pnysten 2:bebd6b2e3d18 1372 DO_DEVDB(cap,dutyCap);
pnysten 2:bebd6b2e3d18 1373 LMIC.dutyCapAns = 1;
pnysten 2:bebd6b2e3d18 1374 continue;
pnysten 2:bebd6b2e3d18 1375 }
pnysten 2:bebd6b2e3d18 1376 case MCMD_SNCH_REQ: {
pnysten 2:bebd6b2e3d18 1377 debug_str("MCMD_SNCH_REQ\r\n");
pnysten 2:bebd6b2e3d18 1378 u1_t chidx = opts[oidx+1]; // channel
pnysten 2:bebd6b2e3d18 1379 u4_t freq = convFreq(&opts[oidx+2]); // freq
pnysten 2:bebd6b2e3d18 1380 u1_t drs = opts[oidx+5]; // datarate span
pnysten 2:bebd6b2e3d18 1381 LMIC.snchAns = 0x80;
pnysten 2:bebd6b2e3d18 1382 if( freq != 0 && LMIC_setupChannel(chidx, freq, DR_RANGE_MAP(drs&0xF,drs>>4), -1) )
pnysten 2:bebd6b2e3d18 1383 LMIC.snchAns |= MCMD_SNCH_ANS_DRACK|MCMD_SNCH_ANS_FQACK;
pnysten 2:bebd6b2e3d18 1384 oidx += 6;
pnysten 2:bebd6b2e3d18 1385 continue;
pnysten 2:bebd6b2e3d18 1386 }
pnysten 2:bebd6b2e3d18 1387 case MCMD_PING_SET: {
pnysten 2:bebd6b2e3d18 1388 debug_str("MCMD_PING_SET\r\n");
pnysten 2:bebd6b2e3d18 1389 u4_t freq = convFreq(&opts[oidx+1]);
pnysten 2:bebd6b2e3d18 1390 oidx += 4;
pnysten 2:bebd6b2e3d18 1391 u1_t flags = 0x80;
pnysten 2:bebd6b2e3d18 1392 if( freq != 0 ) {
pnysten 2:bebd6b2e3d18 1393 flags |= MCMD_PING_ANS_FQACK;
pnysten 2:bebd6b2e3d18 1394 LMIC.ping.freq = freq;
pnysten 2:bebd6b2e3d18 1395 DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
pnysten 2:bebd6b2e3d18 1396 DO_DEVDB(LMIC.ping.freq, pingFreq);
pnysten 2:bebd6b2e3d18 1397 DO_DEVDB(LMIC.ping.dr, pingDr);
pnysten 2:bebd6b2e3d18 1398 }
pnysten 2:bebd6b2e3d18 1399 LMIC.pingSetAns = flags;
pnysten 2:bebd6b2e3d18 1400 continue;
pnysten 2:bebd6b2e3d18 1401 }
pnysten 2:bebd6b2e3d18 1402 case MCMD_BCNI_ANS: {
pnysten 2:bebd6b2e3d18 1403 debug_str("MCMD_BCNI_ANS\r\n");
pnysten 2:bebd6b2e3d18 1404 // Ignore if tracking already enabled
pnysten 2:bebd6b2e3d18 1405 if( (LMIC.opmode & OP_TRACK) == 0 ) {
pnysten 2:bebd6b2e3d18 1406 LMIC.bcnChnl = opts[oidx+3];
pnysten 2:bebd6b2e3d18 1407 // Enable tracking - bcninfoTries
pnysten 2:bebd6b2e3d18 1408 LMIC.opmode |= OP_TRACK;
pnysten 2:bebd6b2e3d18 1409 // Cleared later in txComplete handling - triggers EV_BEACON_FOUND
pnysten 2:bebd6b2e3d18 1410 ASSERT(LMIC.bcninfoTries!=0);
pnysten 2:bebd6b2e3d18 1411 // Setup RX parameters
pnysten 2:bebd6b2e3d18 1412 LMIC.bcninfo.txtime = (LMIC.rxtime
pnysten 2:bebd6b2e3d18 1413 + ms2osticks(os_rlsbf2(&opts[oidx+1]) * MCMD_BCNI_TUNIT)
pnysten 2:bebd6b2e3d18 1414 + ms2osticksCeil(MCMD_BCNI_TUNIT/2)
pnysten 2:bebd6b2e3d18 1415 - BCN_INTV_osticks);
pnysten 2:bebd6b2e3d18 1416 LMIC.bcninfo.flags = 0; // txtime above cannot be used as reference (BCN_PARTIAL|BCN_FULL cleared)
pnysten 2:bebd6b2e3d18 1417 calcBcnRxWindowFromMillis(MCMD_BCNI_TUNIT,1); // error of +/-N ms
pnysten 2:bebd6b2e3d18 1418
pnysten 2:bebd6b2e3d18 1419 EV(lostFrame, INFO, (e_.reason = EV::lostFrame_t::MCMD_BCNI_ANS,
pnysten 2:bebd6b2e3d18 1420 e_.eui = MAIN::CDEV->getEui(),
pnysten 2:bebd6b2e3d18 1421 e_.lostmic = Base::lsbf4(&d[pend]),
pnysten 2:bebd6b2e3d18 1422 e_.info = (LMIC.missedBcns |
pnysten 2:bebd6b2e3d18 1423 (osticks2us(LMIC.bcninfo.txtime + BCN_INTV_osticks
pnysten 2:bebd6b2e3d18 1424 - LMIC.bcnRxtime) << 8)),
pnysten 2:bebd6b2e3d18 1425 e_.time = MAIN::CDEV->ostime2ustime(LMIC.bcninfo.txtime + BCN_INTV_osticks)));
pnysten 2:bebd6b2e3d18 1426 }
pnysten 2:bebd6b2e3d18 1427 oidx += 4;
pnysten 2:bebd6b2e3d18 1428 continue;
pnysten 2:bebd6b2e3d18 1429 }
pnysten 2:bebd6b2e3d18 1430 }
pnysten 2:bebd6b2e3d18 1431 EV(specCond, ERR, (e_.reason = EV::specCond_t::BAD_MAC_CMD,
pnysten 2:bebd6b2e3d18 1432 e_.eui = MAIN::CDEV->getEui(),
pnysten 2:bebd6b2e3d18 1433 e_.info = Base::lsbf4(&d[pend]),
pnysten 2:bebd6b2e3d18 1434 e_.info2 = Base::msbf4(&opts[oidx])));
pnysten 2:bebd6b2e3d18 1435 break;
pnysten 2:bebd6b2e3d18 1436 }
pnysten 2:bebd6b2e3d18 1437 }
pnysten 2:bebd6b2e3d18 1438 // PANY
pnysten 2:bebd6b2e3d18 1439
mluis 0:62d1edcc13d1 1440 return 1;
mluis 0:62d1edcc13d1 1441 }
mluis 0:62d1edcc13d1 1442
mluis 0:62d1edcc13d1 1443
mluis 0:62d1edcc13d1 1444 // ================================================================================
mluis 0:62d1edcc13d1 1445 // TX/RX transaction support
mluis 0:62d1edcc13d1 1446
mluis 0:62d1edcc13d1 1447
mluis 0:62d1edcc13d1 1448 static void setupRx2 (void) {
mluis 0:62d1edcc13d1 1449 LMIC.txrxFlags = TXRX_DNW2;
mluis 0:62d1edcc13d1 1450 LMIC.rps = dndr2rps(LMIC.dn2Dr);
mluis 0:62d1edcc13d1 1451 LMIC.freq = LMIC.dn2Freq;
mluis 0:62d1edcc13d1 1452 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1453 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 1454 }
mluis 0:62d1edcc13d1 1455
mluis 0:62d1edcc13d1 1456
mluis 0:62d1edcc13d1 1457 static void schedRx2 (ostime_t delay, osjobcb_t func) {
mluis 0:62d1edcc13d1 1458 // Add 1.5 symbols we need 5 out of 8. Try to sync 1.5 symbols into the preamble.
mluis 0:62d1edcc13d1 1459 LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dn2Dr);
mluis 0:62d1edcc13d1 1460 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
mluis 0:62d1edcc13d1 1461 }
mluis 0:62d1edcc13d1 1462
mluis 0:62d1edcc13d1 1463 static void setupRx1 (osjobcb_t func) {
mluis 0:62d1edcc13d1 1464 LMIC.txrxFlags = TXRX_DNW1;
mluis 0:62d1edcc13d1 1465 // Turn LMIC.rps from TX over to RX
mluis 0:62d1edcc13d1 1466 LMIC.rps = setNocrc(LMIC.rps,1);
mluis 0:62d1edcc13d1 1467 LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1468 LMIC.osjob.func = func;
mluis 0:62d1edcc13d1 1469 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 1470 }
mluis 0:62d1edcc13d1 1471
mluis 0:62d1edcc13d1 1472
mluis 0:62d1edcc13d1 1473 // Called by HAL once TX complete and delivers exact end of TX time stamp in LMIC.rxtime
mluis 0:62d1edcc13d1 1474 static void txDone (ostime_t delay, osjobcb_t func) {
mluis 0:62d1edcc13d1 1475 if( (LMIC.opmode & (OP_TRACK|OP_PINGABLE|OP_PINGINI)) == (OP_TRACK|OP_PINGABLE) ) {
mluis 1:d3b7bde3995c 1476 rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
mluis 1:d3b7bde3995c 1477 LMIC.opmode |= OP_PINGINI;
mluis 0:62d1edcc13d1 1478 }
mluis 0:62d1edcc13d1 1479 // Change RX frequency / rps (US only) before we increment txChnl
mluis 0:62d1edcc13d1 1480 setRx1Params();
mluis 0:62d1edcc13d1 1481 // LMIC.rxsyms carries the TX datarate (can be != LMIC.datarate [confirm retries etc.])
mluis 0:62d1edcc13d1 1482 // Setup receive - LMIC.rxtime is preloaded with 1.5 symbols offset to tune
mluis 0:62d1edcc13d1 1483 // into the middle of the 8 symbols preamble.
mluis 1:d3b7bde3995c 1484 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 1485 if( /* TX datarate */LMIC.rxsyms == DR_FSK ) {
mluis 1:d3b7bde3995c 1486 LMIC.rxtime = LMIC.txend + delay - PRERX_FSK*us2osticksRound(160);
mluis 1:d3b7bde3995c 1487 LMIC.rxsyms = RXLEN_FSK;
mluis 0:62d1edcc13d1 1488 }
mluis 0:62d1edcc13d1 1489 else
mluis 0:62d1edcc13d1 1490 #endif
mluis 0:62d1edcc13d1 1491 {
mluis 1:d3b7bde3995c 1492 LMIC.rxtime = LMIC.txend + delay + (PAMBL_SYMS-MINRX_SYMS)*dr2hsym(LMIC.dndr);
mluis 1:d3b7bde3995c 1493 LMIC.rxsyms = MINRX_SYMS;
mluis 0:62d1edcc13d1 1494 }
mluis 0:62d1edcc13d1 1495 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, func);
mluis 0:62d1edcc13d1 1496 }
mluis 0:62d1edcc13d1 1497
mluis 0:62d1edcc13d1 1498
mluis 0:62d1edcc13d1 1499 // ======================================== Join frames
mluis 0:62d1edcc13d1 1500
mluis 0:62d1edcc13d1 1501
mluis 0:62d1edcc13d1 1502 static void onJoinFailed (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1503 // Notify app - must call LMIC_reset() to stop joining
mluis 0:62d1edcc13d1 1504 // otherwise join procedure continues.
mluis 0:62d1edcc13d1 1505 reportEvent(EV_JOIN_FAILED);
mluis 0:62d1edcc13d1 1506 }
mluis 0:62d1edcc13d1 1507
mluis 0:62d1edcc13d1 1508
mluis 0:62d1edcc13d1 1509 static bit_t processJoinAccept (void) {
mluis 0:62d1edcc13d1 1510 ASSERT(LMIC.txrxFlags != TXRX_DNW1 || LMIC.dataLen != 0);
mluis 0:62d1edcc13d1 1511 ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
mluis 0:62d1edcc13d1 1512
mluis 0:62d1edcc13d1 1513 if( LMIC.dataLen == 0 ) {
mluis 0:62d1edcc13d1 1514 nojoinframe:
mluis 1:d3b7bde3995c 1515 if( (LMIC.opmode & OP_JOINING) == 0 ) {
mluis 1:d3b7bde3995c 1516 ASSERT((LMIC.opmode & OP_REJOIN) != 0);
mluis 1:d3b7bde3995c 1517 // REJOIN attempt for roaming
mluis 1:d3b7bde3995c 1518 LMIC.opmode &= ~(OP_REJOIN|OP_TXRXPEND);
mluis 1:d3b7bde3995c 1519 if( LMIC.rejoinCnt < 10 )
mluis 1:d3b7bde3995c 1520 LMIC.rejoinCnt++;
mluis 1:d3b7bde3995c 1521 reportEvent(EV_REJOIN_FAILED);
mluis 1:d3b7bde3995c 1522 return 1;
mluis 1:d3b7bde3995c 1523 }
mluis 1:d3b7bde3995c 1524 LMIC.opmode &= ~OP_TXRXPEND;
mluis 1:d3b7bde3995c 1525 ostime_t delay = nextJoinState();
mluis 1:d3b7bde3995c 1526 EV(devCond, DEBUG, (e_.reason = EV::devCond_t::NO_JACC,
mluis 1:d3b7bde3995c 1527 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1528 e_.info = LMIC.datarate|DR_PAGE,
mluis 1:d3b7bde3995c 1529 e_.info2 = osticks2ms(delay)));
mluis 1:d3b7bde3995c 1530 // Build next JOIN REQUEST with next engineUpdate call
mluis 1:d3b7bde3995c 1531 // Optionally, report join failed.
mluis 1:d3b7bde3995c 1532 // Both after a random/chosen amount of ticks.
mluis 1:d3b7bde3995c 1533 os_setTimedCallback(&LMIC.osjob, os_getTime()+delay,
mluis 1:d3b7bde3995c 1534 (delay&1) != 0
mluis 1:d3b7bde3995c 1535 ? FUNC_ADDR(onJoinFailed) // one JOIN iteration done and failed
mluis 1:d3b7bde3995c 1536 : FUNC_ADDR(runEngineUpdate)); // next step to be delayed
mluis 0:62d1edcc13d1 1537 return 1;
mluis 0:62d1edcc13d1 1538 }
mluis 0:62d1edcc13d1 1539 u1_t hdr = LMIC.frame[0];
mluis 0:62d1edcc13d1 1540 u1_t dlen = LMIC.dataLen;
mluis 0:62d1edcc13d1 1541 u4_t mic = os_rlsbf4(&LMIC.frame[dlen-4]); // safe before modified by encrypt!
mluis 0:62d1edcc13d1 1542 if( (dlen != LEN_JA && dlen != LEN_JAEXT)
mluis 1:d3b7bde3995c 1543 || (hdr & (HDR_FTYPE|HDR_MAJOR)) != (HDR_FTYPE_JACC|HDR_MAJOR_V1) ) {
mluis 1:d3b7bde3995c 1544 EV(specCond, ERR, (e_.reason = EV::specCond_t::UNEXPECTED_FRAME,
mluis 1:d3b7bde3995c 1545 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1546 e_.info = dlen < 4 ? 0 : mic,
mluis 1:d3b7bde3995c 1547 e_.info2 = hdr + (dlen<<8)));
mluis 0:62d1edcc13d1 1548 badframe:
mluis 1:d3b7bde3995c 1549 if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
mluis 1:d3b7bde3995c 1550 return 0;
mluis 1:d3b7bde3995c 1551 goto nojoinframe;
mluis 0:62d1edcc13d1 1552 }
mluis 0:62d1edcc13d1 1553 aes_encrypt(LMIC.frame+1, dlen-1);
mluis 0:62d1edcc13d1 1554 if( !aes_verifyMic0(LMIC.frame, dlen-4) ) {
mluis 1:d3b7bde3995c 1555 EV(specCond, ERR, (e_.reason = EV::specCond_t::JOIN_BAD_MIC,
mluis 1:d3b7bde3995c 1556 e_.info = mic));
mluis 1:d3b7bde3995c 1557 goto badframe;
mluis 0:62d1edcc13d1 1558 }
mluis 0:62d1edcc13d1 1559
mluis 0:62d1edcc13d1 1560 u4_t addr = os_rlsbf4(LMIC.frame+OFF_JA_DEVADDR);
mluis 0:62d1edcc13d1 1561 LMIC.devaddr = addr;
mluis 1:d3b7bde3995c 1562 LMIC.netid = os_rlsbf4(&LMIC.frame[OFF_JA_NETID]) & 0xFFFFFF;
mluis 0:62d1edcc13d1 1563
mluis 1:d3b7bde3995c 1564 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 1565 initDefaultChannels(0);
mluis 0:62d1edcc13d1 1566 #endif
mluis 0:62d1edcc13d1 1567 if( dlen > LEN_JA ) {
mluis 1:d3b7bde3995c 1568 dlen = OFF_CFLIST;
mluis 1:d3b7bde3995c 1569 #if defined(CFG_eu868)
mluis 1:d3b7bde3995c 1570 u1_t chidx=3;
mluis 1:d3b7bde3995c 1571 #elif defined(CFG_us915)
mluis 1:d3b7bde3995c 1572 u1_t chidx=72;
mluis 0:62d1edcc13d1 1573 #endif
mluis 1:d3b7bde3995c 1574 for( ; chidx<8; chidx++, dlen+=3 )
mluis 1:d3b7bde3995c 1575 LMIC_setupChannel(chidx, os_rlsbf4(&LMIC.frame[dlen-1]) >> 8, 0, -1);
mluis 0:62d1edcc13d1 1576 }
mluis 0:62d1edcc13d1 1577
mluis 0:62d1edcc13d1 1578 // already incremented when JOIN REQ got sent off
mluis 0:62d1edcc13d1 1579 aes_sessKeys(LMIC.devNonce-1, &LMIC.frame[OFF_JA_ARTNONCE], LMIC.nwkKey, LMIC.artKey);
mluis 1:d3b7bde3995c 1580 DO_DEVDB(LMIC.netid, netid);
mluis 1:d3b7bde3995c 1581 DO_DEVDB(LMIC.devaddr, devaddr);
mluis 1:d3b7bde3995c 1582 DO_DEVDB(LMIC.nwkKey, nwkkey);
mluis 1:d3b7bde3995c 1583 DO_DEVDB(LMIC.artKey, artkey);
mluis 0:62d1edcc13d1 1584
mluis 0:62d1edcc13d1 1585 EV(joininfo, INFO, (e_.arteui = MAIN::CDEV->getArtEui(),
mluis 1:d3b7bde3995c 1586 e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1587 e_.devaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1588 e_.oldaddr = oldaddr,
mluis 1:d3b7bde3995c 1589 e_.nonce = LMIC.devNonce-1,
mluis 1:d3b7bde3995c 1590 e_.mic = mic,
mluis 1:d3b7bde3995c 1591 e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
mluis 1:d3b7bde3995c 1592 ? EV::joininfo_t::REJOIN_ACCEPT
mluis 1:d3b7bde3995c 1593 : EV::joininfo_t::ACCEPT)));
mluis 0:62d1edcc13d1 1594
mluis 0:62d1edcc13d1 1595 ASSERT((LMIC.opmode & (OP_JOINING|OP_REJOIN))!=0);
mluis 0:62d1edcc13d1 1596 if( (LMIC.opmode & OP_REJOIN) != 0 ) {
mluis 1:d3b7bde3995c 1597 // Lower DR every try below current UP DR
mluis 1:d3b7bde3995c 1598 LMIC.datarate = lowerDR(LMIC.datarate, LMIC.rejoinCnt);
mluis 0:62d1edcc13d1 1599 }
mluis 0:62d1edcc13d1 1600 LMIC.opmode &= ~(OP_JOINING|OP_TRACK|OP_REJOIN|OP_TXRXPEND|OP_PINGINI) | OP_NEXTCHNL;
mluis 0:62d1edcc13d1 1601 stateJustJoined();
mluis 0:62d1edcc13d1 1602 reportEvent(EV_JOINED);
mluis 0:62d1edcc13d1 1603 return 1;
mluis 0:62d1edcc13d1 1604 }
mluis 0:62d1edcc13d1 1605
mluis 1:d3b7bde3995c 1606
mluis 1:d3b7bde3995c 1607 static void processRx2Jacc (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1608 if( LMIC.dataLen == 0 )
mluis 1:d3b7bde3995c 1609 LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
mluis 0:62d1edcc13d1 1610 processJoinAccept();
mluis 0:62d1edcc13d1 1611 }
mluis 0:62d1edcc13d1 1612
mluis 1:d3b7bde3995c 1613
mluis 1:d3b7bde3995c 1614 static void setupRx2Jacc (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1615 LMIC.osjob.func = FUNC_ADDR(processRx2Jacc);
mluis 1:d3b7bde3995c 1616 setupRx2();
mluis 1:d3b7bde3995c 1617 }
mluis 1:d3b7bde3995c 1618
mluis 1:d3b7bde3995c 1619
mluis 1:d3b7bde3995c 1620 static void processRx1Jacc (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1621 if( LMIC.dataLen == 0 || !processJoinAccept() )
mluis 1:d3b7bde3995c 1622 schedRx2(DELAY_JACC2_osticks, FUNC_ADDR(setupRx2Jacc));
mluis 1:d3b7bde3995c 1623 }
mluis 1:d3b7bde3995c 1624
mluis 1:d3b7bde3995c 1625
mluis 0:62d1edcc13d1 1626 static void setupRx1Jacc (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1627 setupRx1(FUNC_ADDR(processRx1Jacc));
mluis 0:62d1edcc13d1 1628 }
mluis 0:62d1edcc13d1 1629
mluis 0:62d1edcc13d1 1630
mluis 0:62d1edcc13d1 1631 static void jreqDone (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1632 txDone(DELAY_JACC1_osticks, FUNC_ADDR(setupRx1Jacc));
mluis 0:62d1edcc13d1 1633 }
mluis 0:62d1edcc13d1 1634
mluis 0:62d1edcc13d1 1635 // ======================================== Data frames
mluis 0:62d1edcc13d1 1636
mluis 0:62d1edcc13d1 1637 // Fwd decl.
mluis 0:62d1edcc13d1 1638 static bit_t processDnData(void);
mluis 0:62d1edcc13d1 1639
mluis 1:d3b7bde3995c 1640 static void processRx2DnDataDelay (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1641 processDnData();
mluis 1:d3b7bde3995c 1642 }
mluis 1:d3b7bde3995c 1643
mluis 0:62d1edcc13d1 1644 static void processRx2DnData (xref2osjob_t osjob) {
mluis 1:d3b7bde3995c 1645 if( LMIC.dataLen == 0 ) {
mluis 1:d3b7bde3995c 1646 LMIC.txrxFlags = 0; // nothing in 1st/2nd DN slot
mluis 1:d3b7bde3995c 1647 // Delay callback processing to avoid up TX while gateway is txing our missed frame!
mluis 1:d3b7bde3995c 1648 // Since DNW2 uses SF12 by default we wait 3 secs.
mluis 1:d3b7bde3995c 1649 os_setTimedCallback(&LMIC.osjob,
mluis 1:d3b7bde3995c 1650 (os_getTime() + DNW2_SAFETY_ZONE + rndDelay(2)),
mluis 1:d3b7bde3995c 1651 processRx2DnDataDelay);
mluis 1:d3b7bde3995c 1652 return;
mluis 1:d3b7bde3995c 1653 }
mluis 0:62d1edcc13d1 1654 processDnData();
mluis 0:62d1edcc13d1 1655 }
mluis 0:62d1edcc13d1 1656
mluis 0:62d1edcc13d1 1657
mluis 0:62d1edcc13d1 1658 static void setupRx2DnData (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1659 LMIC.osjob.func = FUNC_ADDR(processRx2DnData);
mluis 0:62d1edcc13d1 1660 setupRx2();
mluis 0:62d1edcc13d1 1661 }
mluis 0:62d1edcc13d1 1662
mluis 0:62d1edcc13d1 1663
mluis 0:62d1edcc13d1 1664 static void processRx1DnData (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1665 if( LMIC.dataLen == 0 || !processDnData() )
mluis 1:d3b7bde3995c 1666 schedRx2(DELAY_DNW2_osticks, FUNC_ADDR(setupRx2DnData));
mluis 0:62d1edcc13d1 1667 }
mluis 0:62d1edcc13d1 1668
mluis 0:62d1edcc13d1 1669
mluis 0:62d1edcc13d1 1670 static void setupRx1DnData (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1671 setupRx1(FUNC_ADDR(processRx1DnData));
mluis 0:62d1edcc13d1 1672 }
mluis 0:62d1edcc13d1 1673
mluis 0:62d1edcc13d1 1674
mluis 0:62d1edcc13d1 1675 static void updataDone (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1676 txDone(DELAY_DNW1_osticks, FUNC_ADDR(setupRx1DnData));
mluis 0:62d1edcc13d1 1677 }
mluis 0:62d1edcc13d1 1678
mluis 0:62d1edcc13d1 1679 // ========================================
mluis 0:62d1edcc13d1 1680
mluis 0:62d1edcc13d1 1681
mluis 0:62d1edcc13d1 1682 static void buildDataFrame (void) {
pnysten 2:bebd6b2e3d18 1683 debug_str("buildDataFrame\r\n");
mluis 0:62d1edcc13d1 1684 bit_t txdata = ((LMIC.opmode & (OP_TXDATA|OP_POLL)) != OP_POLL);
mluis 0:62d1edcc13d1 1685 u1_t dlen = txdata ? LMIC.pendTxLen : 0;
mluis 0:62d1edcc13d1 1686
mluis 0:62d1edcc13d1 1687 // Piggyback MAC options
mluis 0:62d1edcc13d1 1688 // Prioritize by importance
mluis 0:62d1edcc13d1 1689 int end = OFF_DAT_OPTS;
mluis 0:62d1edcc13d1 1690 if( (LMIC.opmode & (OP_TRACK|OP_PINGABLE)) == (OP_TRACK|OP_PINGABLE) ) {
mluis 1:d3b7bde3995c 1691 // Indicate pingability in every UP frame
mluis 1:d3b7bde3995c 1692 LMIC.frame[end] = MCMD_PING_IND;
mluis 1:d3b7bde3995c 1693 LMIC.frame[end+1] = LMIC.ping.dr | (LMIC.ping.intvExp<<4);
mluis 1:d3b7bde3995c 1694 end += 2;
mluis 0:62d1edcc13d1 1695 }
mluis 0:62d1edcc13d1 1696 if( LMIC.dutyCapAns ) {
mluis 1:d3b7bde3995c 1697 LMIC.frame[end] = MCMD_DCAP_ANS;
mluis 1:d3b7bde3995c 1698 end += 1;
mluis 1:d3b7bde3995c 1699 LMIC.dutyCapAns = 0;
mluis 0:62d1edcc13d1 1700 }
mluis 0:62d1edcc13d1 1701 if( LMIC.dn2Ans ) {
mluis 1:d3b7bde3995c 1702 LMIC.frame[end+0] = MCMD_DN2P_ANS;
mluis 1:d3b7bde3995c 1703 LMIC.frame[end+1] = LMIC.dn2Ans & ~MCMD_DN2P_ANS_RFU;
mluis 1:d3b7bde3995c 1704 end += 2;
mluis 1:d3b7bde3995c 1705 LMIC.dn2Ans = 0;
mluis 0:62d1edcc13d1 1706 }
mluis 0:62d1edcc13d1 1707 if( LMIC.devsAns ) { // answer to device status
pnysten 2:bebd6b2e3d18 1708 debug_str("Send Device Status\r\n");
mluis 1:d3b7bde3995c 1709 LMIC.frame[end+0] = MCMD_DEVS_ANS;
mluis 1:d3b7bde3995c 1710 LMIC.frame[end+1] = LMIC.margin;
mluis 1:d3b7bde3995c 1711 LMIC.frame[end+2] = os_getBattLevel();
mluis 1:d3b7bde3995c 1712 end += 3;
mluis 1:d3b7bde3995c 1713 LMIC.devsAns = 0;
mluis 0:62d1edcc13d1 1714 }
mluis 0:62d1edcc13d1 1715 if( LMIC.ladrAns ) { // answer to ADR change
mluis 1:d3b7bde3995c 1716 LMIC.frame[end+0] = MCMD_LADR_ANS;
mluis 1:d3b7bde3995c 1717 LMIC.frame[end+1] = LMIC.ladrAns & ~MCMD_LADR_ANS_RFU;
mluis 1:d3b7bde3995c 1718 end += 2;
mluis 1:d3b7bde3995c 1719 LMIC.ladrAns = 0;
mluis 0:62d1edcc13d1 1720 }
mluis 0:62d1edcc13d1 1721 if( LMIC.bcninfoTries > 0 ) {
mluis 1:d3b7bde3995c 1722 LMIC.frame[end] = MCMD_BCNI_REQ;
mluis 1:d3b7bde3995c 1723 end += 1;
mluis 0:62d1edcc13d1 1724 }
mluis 0:62d1edcc13d1 1725 if( LMIC.adrChanged ) {
mluis 1:d3b7bde3995c 1726 if( LMIC.adrAckReq < 0 )
mluis 1:d3b7bde3995c 1727 LMIC.adrAckReq = 0;
mluis 1:d3b7bde3995c 1728 LMIC.adrChanged = 0;
mluis 0:62d1edcc13d1 1729 }
mluis 0:62d1edcc13d1 1730 if( LMIC.pingSetAns != 0 ) {
mluis 1:d3b7bde3995c 1731 LMIC.frame[end+0] = MCMD_PING_ANS;
mluis 1:d3b7bde3995c 1732 LMIC.frame[end+1] = LMIC.pingSetAns & ~MCMD_PING_ANS_RFU;
mluis 1:d3b7bde3995c 1733 end += 2;
mluis 1:d3b7bde3995c 1734 LMIC.pingSetAns = 0;
mluis 0:62d1edcc13d1 1735 }
mluis 0:62d1edcc13d1 1736 if( LMIC.snchAns ) {
mluis 1:d3b7bde3995c 1737 LMIC.frame[end+0] = MCMD_SNCH_ANS;
mluis 1:d3b7bde3995c 1738 LMIC.frame[end+1] = LMIC.snchAns & ~MCMD_SNCH_ANS_RFU;
mluis 1:d3b7bde3995c 1739 end += 2;
mluis 1:d3b7bde3995c 1740 LMIC.snchAns = 0;
mluis 0:62d1edcc13d1 1741 }
mluis 0:62d1edcc13d1 1742 ASSERT(end <= OFF_DAT_OPTS+16);
mluis 0:62d1edcc13d1 1743
mluis 0:62d1edcc13d1 1744 u1_t flen = end + (txdata ? 5+dlen : 4);
mluis 0:62d1edcc13d1 1745 if( flen > MAX_LEN_FRAME ) {
mluis 1:d3b7bde3995c 1746 // Options and payload too big - delay payload
mluis 1:d3b7bde3995c 1747 txdata = 0;
mluis 1:d3b7bde3995c 1748 flen = end+4;
mluis 0:62d1edcc13d1 1749 }
mluis 0:62d1edcc13d1 1750 LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DAUP | HDR_MAJOR_V1;
mluis 0:62d1edcc13d1 1751 LMIC.frame[OFF_DAT_FCT] = (LMIC.dnConf | LMIC.adrEnabled
mluis 1:d3b7bde3995c 1752 | (LMIC.adrAckReq >= 0 ? FCT_ADRARQ : 0)
mluis 1:d3b7bde3995c 1753 | (end-OFF_DAT_OPTS));
mluis 0:62d1edcc13d1 1754 os_wlsbf4(LMIC.frame+OFF_DAT_ADDR, LMIC.devaddr);
mluis 0:62d1edcc13d1 1755
mluis 0:62d1edcc13d1 1756 if( LMIC.txCnt == 0 ) {
mluis 1:d3b7bde3995c 1757 LMIC.seqnoUp += 1;
mluis 1:d3b7bde3995c 1758 DO_DEVDB(LMIC.seqnoUp,seqnoUp);
mluis 0:62d1edcc13d1 1759 } else {
mluis 1:d3b7bde3995c 1760 EV(devCond, INFO, (e_.reason = EV::devCond_t::RE_TX,
mluis 1:d3b7bde3995c 1761 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1762 e_.info = LMIC.seqnoUp-1,
mluis 1:d3b7bde3995c 1763 e_.info2 = ((LMIC.txCnt+1) |
mluis 1:d3b7bde3995c 1764 (DRADJUST[LMIC.txCnt+1] << 8) |
mluis 1:d3b7bde3995c 1765 ((LMIC.datarate|DR_PAGE)<<16))));
mluis 0:62d1edcc13d1 1766 }
mluis 0:62d1edcc13d1 1767 os_wlsbf2(LMIC.frame+OFF_DAT_SEQNO, LMIC.seqnoUp-1);
mluis 0:62d1edcc13d1 1768
mluis 0:62d1edcc13d1 1769 // Clear pending DN confirmation
mluis 0:62d1edcc13d1 1770 LMIC.dnConf = 0;
mluis 0:62d1edcc13d1 1771
mluis 0:62d1edcc13d1 1772 if( txdata ) {
mluis 1:d3b7bde3995c 1773 if( LMIC.pendTxConf ) {
mluis 1:d3b7bde3995c 1774 // Confirmed only makes sense if we have a payload (or at least a port)
mluis 1:d3b7bde3995c 1775 LMIC.frame[OFF_DAT_HDR] = HDR_FTYPE_DCUP | HDR_MAJOR_V1;
mluis 1:d3b7bde3995c 1776 if( LMIC.txCnt == 0 ) LMIC.txCnt = 1;
mluis 1:d3b7bde3995c 1777 }
mluis 1:d3b7bde3995c 1778 LMIC.frame[end] = LMIC.pendTxPort;
mluis 1:d3b7bde3995c 1779 os_copyMem(LMIC.frame+end+1, LMIC.pendTxData, dlen);
mluis 1:d3b7bde3995c 1780 aes_cipher(LMIC.pendTxPort==0 ? LMIC.nwkKey : LMIC.artKey,
mluis 1:d3b7bde3995c 1781 LMIC.devaddr, LMIC.seqnoUp-1,
mluis 1:d3b7bde3995c 1782 /*up*/0, LMIC.frame+end+1, dlen);
mluis 0:62d1edcc13d1 1783 }
mluis 0:62d1edcc13d1 1784 aes_appendMic(LMIC.nwkKey, LMIC.devaddr, LMIC.seqnoUp-1, /*up*/0, LMIC.frame, flen-4);
mluis 0:62d1edcc13d1 1785
mluis 0:62d1edcc13d1 1786 EV(dfinfo, DEBUG, (e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1787 e_.devaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1788 e_.seqno = LMIC.seqnoUp-1,
mluis 1:d3b7bde3995c 1789 e_.flags = (LMIC.pendTxPort < 0 ? EV::dfinfo_t::NOPORT : EV::dfinfo_t::NOP),
mluis 1:d3b7bde3995c 1790 e_.mic = Base::lsbf4(&LMIC.frame[flen-4]),
mluis 1:d3b7bde3995c 1791 e_.hdr = LMIC.frame[LORA::OFF_DAT_HDR],
mluis 1:d3b7bde3995c 1792 e_.fct = LMIC.frame[LORA::OFF_DAT_FCT],
mluis 1:d3b7bde3995c 1793 e_.port = LMIC.pendTxPort,
mluis 1:d3b7bde3995c 1794 e_.plen = txdata ? dlen : 0,
mluis 1:d3b7bde3995c 1795 e_.opts.length = end-LORA::OFF_DAT_OPTS,
mluis 1:d3b7bde3995c 1796 memcpy(&e_.opts[0], LMIC.frame+LORA::OFF_DAT_OPTS, end-LORA::OFF_DAT_OPTS)));
mluis 0:62d1edcc13d1 1797 LMIC.dataLen = flen;
mluis 0:62d1edcc13d1 1798 }
mluis 0:62d1edcc13d1 1799
mluis 0:62d1edcc13d1 1800
mluis 0:62d1edcc13d1 1801 // Callback from HAL during scan mode or when job timer expires.
mluis 0:62d1edcc13d1 1802 static void onBcnRx (xref2osjob_t job) {
mluis 0:62d1edcc13d1 1803 // If we arrive via job timer make sure to put radio to rest.
mluis 0:62d1edcc13d1 1804 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 1805 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 1806 if( LMIC.dataLen == 0 ) {
mluis 1:d3b7bde3995c 1807 // Nothing received - timeout
mluis 1:d3b7bde3995c 1808 LMIC.opmode &= ~(OP_SCAN | OP_TRACK);
mluis 1:d3b7bde3995c 1809 reportEvent(EV_SCAN_TIMEOUT);
mluis 1:d3b7bde3995c 1810 return;
mluis 0:62d1edcc13d1 1811 }
mluis 0:62d1edcc13d1 1812 if( decodeBeacon() <= 0 ) {
mluis 1:d3b7bde3995c 1813 // Something is wrong with the beacon - continue scan
mluis 1:d3b7bde3995c 1814 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 1815 os_radio(RADIO_RXON);
mluis 1:d3b7bde3995c 1816 os_setTimedCallback(&LMIC.osjob, LMIC.bcninfo.txtime, FUNC_ADDR(onBcnRx));
mluis 1:d3b7bde3995c 1817 return;
mluis 0:62d1edcc13d1 1818 }
mluis 0:62d1edcc13d1 1819 // Found our 1st beacon
mluis 0:62d1edcc13d1 1820 // We don't have a previous beacon to calc some drift - assume
mluis 0:62d1edcc13d1 1821 // an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
mluis 0:62d1edcc13d1 1822 calcBcnRxWindowFromMillis(13,1);
mluis 0:62d1edcc13d1 1823 LMIC.opmode &= ~OP_SCAN; // turn SCAN off
mluis 0:62d1edcc13d1 1824 LMIC.opmode |= OP_TRACK; // auto enable tracking
mluis 0:62d1edcc13d1 1825 reportEvent(EV_BEACON_FOUND); // can be disabled in callback
mluis 0:62d1edcc13d1 1826 }
mluis 0:62d1edcc13d1 1827
mluis 0:62d1edcc13d1 1828
mluis 0:62d1edcc13d1 1829 // Enable receiver to listen to incoming beacons
mluis 0:62d1edcc13d1 1830 // netid defines when scan stops (any or specific beacon)
mluis 0:62d1edcc13d1 1831 // This mode ends with events: EV_SCAN_TIMEOUT/EV_SCAN_BEACON
mluis 0:62d1edcc13d1 1832 // Implicitely cancels any pending TX/RX transaction.
mluis 0:62d1edcc13d1 1833 // Also cancels an onpoing joining procedure.
mluis 0:62d1edcc13d1 1834 static void startScan (void) {
mluis 0:62d1edcc13d1 1835 ASSERT(LMIC.devaddr!=0 && (LMIC.opmode & OP_JOINING)==0);
mluis 0:62d1edcc13d1 1836 if( (LMIC.opmode & OP_SHUTDOWN) != 0 )
mluis 1:d3b7bde3995c 1837 return;
mluis 0:62d1edcc13d1 1838 // Cancel onging TX/RX transaction
mluis 0:62d1edcc13d1 1839 LMIC.txCnt = LMIC.dnConf = LMIC.bcninfo.flags = 0;
mluis 0:62d1edcc13d1 1840 LMIC.opmode = (LMIC.opmode | OP_SCAN) & ~(OP_TXRXPEND);
mluis 0:62d1edcc13d1 1841 setBcnRxParams();
mluis 0:62d1edcc13d1 1842 LMIC.rxtime = LMIC.bcninfo.txtime = os_getTime() + sec2osticks(BCN_INTV_sec+1);
mluis 0:62d1edcc13d1 1843 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime, FUNC_ADDR(onBcnRx));
mluis 0:62d1edcc13d1 1844 os_radio(RADIO_RXON);
mluis 0:62d1edcc13d1 1845 }
mluis 0:62d1edcc13d1 1846
mluis 0:62d1edcc13d1 1847
mluis 0:62d1edcc13d1 1848 bit_t LMIC_enableTracking (u1_t tryBcnInfo) {
mluis 0:62d1edcc13d1 1849 if( (LMIC.opmode & (OP_SCAN|OP_TRACK|OP_SHUTDOWN)) != 0 )
mluis 1:d3b7bde3995c 1850 return 0; // already in progress or failed to enable
mluis 0:62d1edcc13d1 1851 // If BCN info requested from NWK then app has to take are
mluis 0:62d1edcc13d1 1852 // of sending data up so that MCMD_BCNI_REQ can be attached.
mluis 0:62d1edcc13d1 1853 if( (LMIC.bcninfoTries = tryBcnInfo) == 0 )
mluis 1:d3b7bde3995c 1854 startScan();
mluis 0:62d1edcc13d1 1855 return 1; // enabled
mluis 0:62d1edcc13d1 1856 }
mluis 0:62d1edcc13d1 1857
mluis 0:62d1edcc13d1 1858
mluis 0:62d1edcc13d1 1859 void LMIC_disableTracking (void) {
mluis 0:62d1edcc13d1 1860 LMIC.opmode &= ~(OP_SCAN|OP_TRACK);
mluis 0:62d1edcc13d1 1861 LMIC.bcninfoTries = 0;
mluis 0:62d1edcc13d1 1862 engineUpdate();
mluis 0:62d1edcc13d1 1863 }
mluis 0:62d1edcc13d1 1864
mluis 0:62d1edcc13d1 1865
mluis 0:62d1edcc13d1 1866 // ================================================================================
mluis 0:62d1edcc13d1 1867 //
mluis 0:62d1edcc13d1 1868 // Join stuff
mluis 0:62d1edcc13d1 1869 //
mluis 0:62d1edcc13d1 1870 // ================================================================================
mluis 0:62d1edcc13d1 1871
mluis 0:62d1edcc13d1 1872 static void buildJoinRequest (u1_t ftype) {
mluis 0:62d1edcc13d1 1873 // Do not use pendTxData since we might have a pending
mluis 0:62d1edcc13d1 1874 // user level frame in there. Use RX holding area instead.
mluis 0:62d1edcc13d1 1875 xref2u1_t d = LMIC.frame;
mluis 0:62d1edcc13d1 1876 d[OFF_JR_HDR] = ftype;
mluis 0:62d1edcc13d1 1877 os_getArtEui(d + OFF_JR_ARTEUI);
mluis 0:62d1edcc13d1 1878 os_getDevEui(d + OFF_JR_DEVEUI);
mluis 0:62d1edcc13d1 1879 os_wlsbf2(d + OFF_JR_DEVNONCE, LMIC.devNonce);
mluis 0:62d1edcc13d1 1880 aes_appendMic0(d, OFF_JR_MIC);
mluis 0:62d1edcc13d1 1881
mluis 0:62d1edcc13d1 1882 EV(joininfo,INFO,(e_.deveui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1883 e_.arteui = MAIN::CDEV->getArtEui(),
mluis 1:d3b7bde3995c 1884 e_.nonce = LMIC.devNonce,
mluis 1:d3b7bde3995c 1885 e_.oldaddr = LMIC.devaddr,
mluis 1:d3b7bde3995c 1886 e_.mic = Base::lsbf4(&d[LORA::OFF_JR_MIC]),
mluis 1:d3b7bde3995c 1887 e_.reason = ((LMIC.opmode & OP_REJOIN) != 0
mluis 1:d3b7bde3995c 1888 ? EV::joininfo_t::REJOIN_REQUEST
mluis 1:d3b7bde3995c 1889 : EV::joininfo_t::REQUEST)));
mluis 0:62d1edcc13d1 1890 LMIC.dataLen = LEN_JR;
mluis 0:62d1edcc13d1 1891 LMIC.devNonce++;
mluis 1:d3b7bde3995c 1892 DO_DEVDB(LMIC.devNonce,devNonce);
mluis 0:62d1edcc13d1 1893 }
mluis 0:62d1edcc13d1 1894
mluis 0:62d1edcc13d1 1895 static void startJoining (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1896 reportEvent(EV_JOINING);
mluis 0:62d1edcc13d1 1897 }
mluis 0:62d1edcc13d1 1898
mluis 0:62d1edcc13d1 1899 // Start join procedure if not already joined.
mluis 0:62d1edcc13d1 1900 bit_t LMIC_startJoining (void) {
mluis 0:62d1edcc13d1 1901 if( LMIC.devaddr == 0 ) {
mluis 1:d3b7bde3995c 1902 // There should be no TX/RX going on
mluis 1:d3b7bde3995c 1903 ASSERT((LMIC.opmode & (OP_POLL|OP_TXRXPEND)) == 0);
mluis 1:d3b7bde3995c 1904 // Lift any previous duty limitation
mluis 1:d3b7bde3995c 1905 LMIC.globalDutyRate = 0;
mluis 1:d3b7bde3995c 1906 // Cancel scanning
mluis 1:d3b7bde3995c 1907 LMIC.opmode &= ~(OP_SCAN|OP_REJOIN|OP_LINKDEAD|OP_NEXTCHNL);
mluis 1:d3b7bde3995c 1908 // Setup state
mluis 1:d3b7bde3995c 1909 LMIC.rejoinCnt = LMIC.txCnt = LMIC.pendTxConf = 0;
mluis 1:d3b7bde3995c 1910 initJoinLoop();
mluis 1:d3b7bde3995c 1911 LMIC.opmode |= OP_JOINING;
mluis 1:d3b7bde3995c 1912 // reportEvent will call engineUpdate which then starts sending JOIN REQUESTS
mluis 1:d3b7bde3995c 1913 os_setCallback(&LMIC.osjob, FUNC_ADDR(startJoining));
mluis 1:d3b7bde3995c 1914 return 1;
mluis 0:62d1edcc13d1 1915 }
mluis 1:d3b7bde3995c 1916 return 0; // already joined
mluis 0:62d1edcc13d1 1917 }
mluis 0:62d1edcc13d1 1918
mluis 0:62d1edcc13d1 1919
mluis 0:62d1edcc13d1 1920 // ================================================================================
mluis 0:62d1edcc13d1 1921 //
mluis 0:62d1edcc13d1 1922 //
mluis 0:62d1edcc13d1 1923 //
mluis 0:62d1edcc13d1 1924 // ================================================================================
mluis 0:62d1edcc13d1 1925
mluis 0:62d1edcc13d1 1926 static void processPingRx (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 1927 if( LMIC.dataLen != 0 ) {
mluis 1:d3b7bde3995c 1928 LMIC.txrxFlags = TXRX_PING;
mluis 1:d3b7bde3995c 1929 if( decodeFrame() ) {
mluis 1:d3b7bde3995c 1930 reportEvent(EV_RXCOMPLETE);
mluis 1:d3b7bde3995c 1931 return;
mluis 1:d3b7bde3995c 1932 }
mluis 0:62d1edcc13d1 1933 }
mluis 0:62d1edcc13d1 1934 // Pick next ping slot
mluis 0:62d1edcc13d1 1935 engineUpdate();
mluis 0:62d1edcc13d1 1936 }
mluis 0:62d1edcc13d1 1937
mluis 0:62d1edcc13d1 1938
mluis 0:62d1edcc13d1 1939 static bit_t processDnData (void) {
mluis 0:62d1edcc13d1 1940 ASSERT((LMIC.opmode & OP_TXRXPEND)!=0);
mluis 0:62d1edcc13d1 1941
mluis 0:62d1edcc13d1 1942 if( LMIC.dataLen == 0 ) {
mluis 0:62d1edcc13d1 1943 norx:
mluis 1:d3b7bde3995c 1944 if( LMIC.txCnt != 0 ) {
mluis 1:d3b7bde3995c 1945 if( LMIC.txCnt < TXCONF_ATTEMPTS ) {
mluis 1:d3b7bde3995c 1946 LMIC.txCnt += 1;
mluis 1:d3b7bde3995c 1947 setDrTxpow(DRCHG_NOACK, lowerDR(LMIC.datarate, DRADJUST[LMIC.txCnt]), KEEP_TXPOW);
mluis 1:d3b7bde3995c 1948 // Schedule another retransmission
mluis 1:d3b7bde3995c 1949 txDelay(LMIC.rxtime, RETRY_PERIOD_secs);
mluis 1:d3b7bde3995c 1950 LMIC.opmode &= ~OP_TXRXPEND;
mluis 1:d3b7bde3995c 1951 engineUpdate();
mluis 1:d3b7bde3995c 1952 return 1;
mluis 1:d3b7bde3995c 1953 }
mluis 1:d3b7bde3995c 1954 LMIC.txrxFlags = TXRX_NACK | TXRX_NOPORT;
mluis 1:d3b7bde3995c 1955 } else {
mluis 1:d3b7bde3995c 1956 // Nothing received - implies no port
mluis 1:d3b7bde3995c 1957 LMIC.txrxFlags = TXRX_NOPORT;
mluis 0:62d1edcc13d1 1958 }
mluis 1:d3b7bde3995c 1959 if( LMIC.adrAckReq != LINK_CHECK_OFF )
mluis 1:d3b7bde3995c 1960 LMIC.adrAckReq += 1;
mluis 1:d3b7bde3995c 1961 LMIC.dataBeg = LMIC.dataLen = 0;
mluis 0:62d1edcc13d1 1962 txcomplete:
mluis 1:d3b7bde3995c 1963 LMIC.opmode &= ~(OP_TXDATA|OP_TXRXPEND);
mluis 1:d3b7bde3995c 1964 if( (LMIC.txrxFlags & (TXRX_DNW1|TXRX_DNW2|TXRX_PING)) != 0 && (LMIC.opmode & OP_LINKDEAD) != 0 ) {
mluis 1:d3b7bde3995c 1965 LMIC.opmode &= ~OP_LINKDEAD;
mluis 1:d3b7bde3995c 1966 reportEvent(EV_LINK_ALIVE);
mluis 1:d3b7bde3995c 1967 }
mluis 1:d3b7bde3995c 1968 reportEvent(EV_TXCOMPLETE);
mluis 1:d3b7bde3995c 1969 // If we haven't heard from NWK in a while although we asked for a sign
mluis 1:d3b7bde3995c 1970 // assume link is dead - notify application and keep going
mluis 1:d3b7bde3995c 1971 if( LMIC.adrAckReq > LINK_CHECK_DEAD ) {
mluis 1:d3b7bde3995c 1972 // We haven't heard from NWK for some time although we
mluis 1:d3b7bde3995c 1973 // asked for a response for some time - assume we're disconnected. Lower DR one notch.
mluis 1:d3b7bde3995c 1974 EV(devCond, ERR, (e_.reason = EV::devCond_t::LINK_DEAD,
mluis 1:d3b7bde3995c 1975 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 1976 e_.info = LMIC.adrAckReq));
mluis 1:d3b7bde3995c 1977 setDrTxpow(DRCHG_NOADRACK, decDR((dr_t)LMIC.datarate), KEEP_TXPOW);
mluis 1:d3b7bde3995c 1978 LMIC.adrAckReq = LINK_CHECK_CONT;
mluis 0:62d1edcc13d1 1979 LMIC.opmode |= OP_REJOIN|OP_LINKDEAD;
mluis 1:d3b7bde3995c 1980 reportEvent(EV_LINK_DEAD);
mluis 0:62d1edcc13d1 1981 }
mluis 1:d3b7bde3995c 1982 // If this falls to zero the NWK did not answer our MCMD_BCNI_REQ commands - try full scan
mluis 1:d3b7bde3995c 1983 if( LMIC.bcninfoTries > 0 ) {
mluis 1:d3b7bde3995c 1984 if( (LMIC.opmode & OP_TRACK) != 0 ) {
mluis 1:d3b7bde3995c 1985 reportEvent(EV_BEACON_FOUND);
mluis 1:d3b7bde3995c 1986 LMIC.bcninfoTries = 0;
mluis 1:d3b7bde3995c 1987 }
mluis 1:d3b7bde3995c 1988 else if( --LMIC.bcninfoTries == 0 ) {
mluis 1:d3b7bde3995c 1989 startScan(); // NWK did not answer - try scan
mluis 1:d3b7bde3995c 1990 }
mluis 0:62d1edcc13d1 1991 }
mluis 1:d3b7bde3995c 1992 return 1;
mluis 0:62d1edcc13d1 1993 }
mluis 0:62d1edcc13d1 1994 if( !decodeFrame() ) {
mluis 1:d3b7bde3995c 1995 if( (LMIC.txrxFlags & TXRX_DNW1) != 0 )
mluis 1:d3b7bde3995c 1996 return 0;
mluis 1:d3b7bde3995c 1997 goto norx;
mluis 0:62d1edcc13d1 1998 }
mluis 0:62d1edcc13d1 1999 goto txcomplete;
mluis 0:62d1edcc13d1 2000 }
mluis 0:62d1edcc13d1 2001
mluis 0:62d1edcc13d1 2002
mluis 0:62d1edcc13d1 2003 static void processBeacon (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 2004 ostime_t lasttx = LMIC.bcninfo.txtime; // save here - decodeBeacon might overwrite
mluis 0:62d1edcc13d1 2005 u1_t flags = LMIC.bcninfo.flags;
mluis 0:62d1edcc13d1 2006 ev_t ev;
mluis 0:62d1edcc13d1 2007
mluis 0:62d1edcc13d1 2008 if( LMIC.dataLen != 0 && decodeBeacon() >= 1 ) {
mluis 1:d3b7bde3995c 2009 ev = EV_BEACON_TRACKED;
mluis 1:d3b7bde3995c 2010 if( (flags & (BCN_PARTIAL|BCN_FULL)) == 0 ) {
mluis 1:d3b7bde3995c 2011 // We don't have a previous beacon to calc some drift - assume
mluis 1:d3b7bde3995c 2012 // an max error of 13ms = 128sec*100ppm which is roughly +/-100ppm
mluis 1:d3b7bde3995c 2013 calcBcnRxWindowFromMillis(13,0);
mluis 1:d3b7bde3995c 2014 goto rev;
mluis 1:d3b7bde3995c 2015 }
mluis 1:d3b7bde3995c 2016 // We have a previous BEACON to calculate some drift
mluis 1:d3b7bde3995c 2017 s2_t drift = BCN_INTV_osticks - (LMIC.bcninfo.txtime - lasttx);
mluis 1:d3b7bde3995c 2018 if( LMIC.missedBcns > 0 ) {
mluis 1:d3b7bde3995c 2019 drift = LMIC.drift + (drift - LMIC.drift) / (LMIC.missedBcns+1);
mluis 1:d3b7bde3995c 2020 }
mluis 1:d3b7bde3995c 2021 if( (LMIC.bcninfo.flags & BCN_NODRIFT) == 0 ) {
mluis 1:d3b7bde3995c 2022 s2_t diff = LMIC.drift - drift;
mluis 1:d3b7bde3995c 2023 if( diff < 0 ) diff = -diff;
mluis 1:d3b7bde3995c 2024 LMIC.lastDriftDiff = diff;
mluis 1:d3b7bde3995c 2025 if( LMIC.maxDriftDiff < diff )
mluis 1:d3b7bde3995c 2026 LMIC.maxDriftDiff = diff;
mluis 1:d3b7bde3995c 2027 LMIC.bcninfo.flags &= ~BCN_NODDIFF;
mluis 1:d3b7bde3995c 2028 }
mluis 1:d3b7bde3995c 2029 LMIC.drift = drift;
mluis 1:d3b7bde3995c 2030 LMIC.missedBcns = LMIC.rejoinCnt = 0;
mluis 1:d3b7bde3995c 2031 LMIC.bcninfo.flags &= ~BCN_NODRIFT;
mluis 1:d3b7bde3995c 2032 EV(devCond,INFO,(e_.reason = EV::devCond_t::CLOCK_DRIFT,
mluis 1:d3b7bde3995c 2033 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2034 e_.info = drift,
mluis 1:d3b7bde3995c 2035 e_.info2 = /*occasion BEACON*/0));
mluis 1:d3b7bde3995c 2036 ASSERT((LMIC.bcninfo.flags & (BCN_PARTIAL|BCN_FULL)) != 0);
mluis 0:62d1edcc13d1 2037 } else {
mluis 1:d3b7bde3995c 2038 ev = EV_BEACON_MISSED;
mluis 1:d3b7bde3995c 2039 LMIC.bcninfo.txtime += BCN_INTV_osticks - LMIC.drift;
mluis 1:d3b7bde3995c 2040 LMIC.bcninfo.time += BCN_INTV_sec;
mluis 1:d3b7bde3995c 2041 LMIC.missedBcns++;
mluis 1:d3b7bde3995c 2042 // Delay any possible TX after surmised beacon - it's there although we missed it
mluis 1:d3b7bde3995c 2043 txDelay(LMIC.bcninfo.txtime + BCN_RESERVE_osticks, 4);
mluis 1:d3b7bde3995c 2044 if( LMIC.missedBcns > MAX_MISSED_BCNS )
mluis 1:d3b7bde3995c 2045 LMIC.opmode |= OP_REJOIN; // try if we can roam to another network
mluis 1:d3b7bde3995c 2046 if( LMIC.bcnRxsyms > MAX_RXSYMS ) {
mluis 1:d3b7bde3995c 2047 LMIC.opmode &= ~(OP_TRACK|OP_PINGABLE|OP_PINGINI|OP_REJOIN);
mluis 1:d3b7bde3995c 2048 reportEvent(EV_LOST_TSYNC);
mluis 1:d3b7bde3995c 2049 return;
mluis 1:d3b7bde3995c 2050 }
mluis 0:62d1edcc13d1 2051 }
mluis 0:62d1edcc13d1 2052 LMIC.bcnRxtime = LMIC.bcninfo.txtime + BCN_INTV_osticks - calcRxWindow(0,DR_BCN);
mluis 0:62d1edcc13d1 2053 LMIC.bcnRxsyms = LMIC.rxsyms;
mluis 0:62d1edcc13d1 2054 rev:
mluis 1:d3b7bde3995c 2055 #if CFG_us915
mluis 1:d3b7bde3995c 2056 LMIC.bcnChnl = (LMIC.bcnChnl+1) & 7;
mluis 1:d3b7bde3995c 2057 #endif
mluis 0:62d1edcc13d1 2058 if( (LMIC.opmode & OP_PINGINI) != 0 )
mluis 1:d3b7bde3995c 2059 rxschedInit(&LMIC.ping); // note: reuses LMIC.frame buffer!
mluis 0:62d1edcc13d1 2060 reportEvent(ev);
mluis 0:62d1edcc13d1 2061 }
mluis 0:62d1edcc13d1 2062
mluis 0:62d1edcc13d1 2063
mluis 0:62d1edcc13d1 2064 static void startRxBcn (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 2065 LMIC.osjob.func = FUNC_ADDR(processBeacon);
mluis 0:62d1edcc13d1 2066 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 2067 }
mluis 0:62d1edcc13d1 2068
mluis 0:62d1edcc13d1 2069
mluis 0:62d1edcc13d1 2070 static void startRxPing (xref2osjob_t osjob) {
mluis 0:62d1edcc13d1 2071 LMIC.osjob.func = FUNC_ADDR(processPingRx);
mluis 0:62d1edcc13d1 2072 os_radio(RADIO_RX);
mluis 0:62d1edcc13d1 2073 }
mluis 0:62d1edcc13d1 2074
mluis 0:62d1edcc13d1 2075
mluis 0:62d1edcc13d1 2076 // Decide what to do next for the MAC layer of a device
mluis 0:62d1edcc13d1 2077 static void engineUpdate (void) {
mluis 0:62d1edcc13d1 2078 // Check for ongoing state: scan or TX/RX transaction
mluis 0:62d1edcc13d1 2079 if( (LMIC.opmode & (OP_SCAN|OP_TXRXPEND|OP_SHUTDOWN)) != 0 )
mluis 1:d3b7bde3995c 2080 return;
mluis 0:62d1edcc13d1 2081
mluis 0:62d1edcc13d1 2082 if( LMIC.devaddr == 0 && (LMIC.opmode & OP_JOINING) == 0 ) {
mluis 1:d3b7bde3995c 2083 LMIC_startJoining();
mluis 1:d3b7bde3995c 2084 return;
mluis 0:62d1edcc13d1 2085 }
mluis 0:62d1edcc13d1 2086
mluis 0:62d1edcc13d1 2087 ostime_t now = os_getTime();
mluis 0:62d1edcc13d1 2088 ostime_t rxtime = 0;
mluis 0:62d1edcc13d1 2089 ostime_t txbeg = 0;
mluis 0:62d1edcc13d1 2090
mluis 0:62d1edcc13d1 2091 if( (LMIC.opmode & OP_TRACK) != 0 ) {
mluis 1:d3b7bde3995c 2092 // We are tracking a beacon
mluis 1:d3b7bde3995c 2093 ASSERT( now + RX_RAMPUP - LMIC.bcnRxtime <= 0 );
mluis 1:d3b7bde3995c 2094 rxtime = LMIC.bcnRxtime - RX_RAMPUP;
mluis 0:62d1edcc13d1 2095 }
mluis 0:62d1edcc13d1 2096
mluis 0:62d1edcc13d1 2097 if( (LMIC.opmode & (OP_JOINING|OP_REJOIN|OP_TXDATA|OP_POLL)) != 0 ) {
mluis 1:d3b7bde3995c 2098 // Need to TX some data...
mluis 1:d3b7bde3995c 2099 // Assuming txChnl points to channel which first becomes available again.
mluis 1:d3b7bde3995c 2100 bit_t jacc = ((LMIC.opmode & (OP_JOINING|OP_REJOIN)) != 0 ? 1 : 0);
mluis 1:d3b7bde3995c 2101 // Find next suitable channel and return availability time
mluis 1:d3b7bde3995c 2102 if( (LMIC.opmode & OP_NEXTCHNL) != 0 ) {
mluis 1:d3b7bde3995c 2103 txbeg = LMIC.txend = nextTx(now);
mluis 1:d3b7bde3995c 2104 LMIC.opmode &= ~OP_NEXTCHNL;
mluis 0:62d1edcc13d1 2105 } else {
mluis 1:d3b7bde3995c 2106 txbeg = LMIC.txend;
mluis 1:d3b7bde3995c 2107 }
mluis 1:d3b7bde3995c 2108 // Delayed TX or waiting for duty cycle?
mluis 1:d3b7bde3995c 2109 if( (LMIC.globalDutyRate != 0 || (LMIC.opmode & OP_RNDTX) != 0) && (txbeg - LMIC.globalDutyAvail) < 0 )
mluis 1:d3b7bde3995c 2110 txbeg = LMIC.globalDutyAvail;
mluis 1:d3b7bde3995c 2111 // If we're tracking a beacon...
mluis 1:d3b7bde3995c 2112 // then make sure TX-RX transaction is complete before beacon
mluis 1:d3b7bde3995c 2113 if( (LMIC.opmode & OP_TRACK) != 0 &&
mluis 1:d3b7bde3995c 2114 txbeg + (jacc ? JOIN_GUARD_osticks : TXRX_GUARD_osticks) - rxtime > 0 ) {
mluis 1:d3b7bde3995c 2115 // Not enough time to complete TX-RX before beacon - postpone after beacon.
mluis 1:d3b7bde3995c 2116 // In order to avoid clustering of postponed TX right after beacon randomize start!
mluis 1:d3b7bde3995c 2117 txDelay(rxtime + BCN_RESERVE_osticks, 16);
mluis 1:d3b7bde3995c 2118 txbeg = 0;
mluis 1:d3b7bde3995c 2119 goto checkrx;
mluis 0:62d1edcc13d1 2120 }
mluis 1:d3b7bde3995c 2121 // Earliest possible time vs overhead to setup radio
mluis 1:d3b7bde3995c 2122 if( txbeg - (now + TX_RAMPUP) < 0 ) {
mluis 1:d3b7bde3995c 2123 // We could send right now!
mluis 1:d3b7bde3995c 2124 dr_t txdr = (dr_t)LMIC.datarate;
mluis 1:d3b7bde3995c 2125 if( jacc ) {
mluis 1:d3b7bde3995c 2126 u1_t ftype;
mluis 1:d3b7bde3995c 2127 if( (LMIC.opmode & OP_REJOIN) != 0 ) {
mluis 1:d3b7bde3995c 2128 txdr = lowerDR(txdr, LMIC.rejoinCnt);
mluis 1:d3b7bde3995c 2129 ftype = HDR_FTYPE_REJOIN;
mluis 1:d3b7bde3995c 2130 } else {
mluis 1:d3b7bde3995c 2131 ftype = HDR_FTYPE_JREQ;
mluis 1:d3b7bde3995c 2132 }
mluis 1:d3b7bde3995c 2133 buildJoinRequest(ftype);
mluis 1:d3b7bde3995c 2134 LMIC.osjob.func = FUNC_ADDR(jreqDone);
mluis 1:d3b7bde3995c 2135 } else {
mluis 1:d3b7bde3995c 2136 if( LMIC.seqnoDn >= 0xFFFFFF80 ) {
mluis 1:d3b7bde3995c 2137 // Imminent roll over - proactively reset MAC
mluis 1:d3b7bde3995c 2138 EV(specCond, INFO, (e_.reason = EV::specCond_t::DNSEQNO_ROLL_OVER,
mluis 1:d3b7bde3995c 2139 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2140 e_.info = LMIC.seqnoDn,
mluis 1:d3b7bde3995c 2141 e_.info2 = 0));
mluis 1:d3b7bde3995c 2142 // Device has to react! NWK will not roll over and just stop sending.
mluis 1:d3b7bde3995c 2143 // Thus, we have N frames to detect a possible lock up.
mluis 1:d3b7bde3995c 2144 reset:
mluis 1:d3b7bde3995c 2145 os_setCallback(&LMIC.osjob, FUNC_ADDR(runReset));
mluis 1:d3b7bde3995c 2146 return;
mluis 1:d3b7bde3995c 2147 }
mluis 1:d3b7bde3995c 2148 if( (LMIC.txCnt==0 && LMIC.seqnoUp == 0xFFFFFFFF) ) {
mluis 1:d3b7bde3995c 2149 // Roll over of up seq counter
mluis 1:d3b7bde3995c 2150 EV(specCond, ERR, (e_.reason = EV::specCond_t::UPSEQNO_ROLL_OVER,
mluis 1:d3b7bde3995c 2151 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2152 e_.info2 = LMIC.seqnoUp));
mluis 1:d3b7bde3995c 2153 // Do not run RESET event callback from here!
mluis 1:d3b7bde3995c 2154 // App code might do some stuff after send unaware of RESET.
mluis 1:d3b7bde3995c 2155 goto reset;
mluis 1:d3b7bde3995c 2156 }
mluis 1:d3b7bde3995c 2157 buildDataFrame();
mluis 1:d3b7bde3995c 2158 LMIC.osjob.func = FUNC_ADDR(updataDone);
mluis 1:d3b7bde3995c 2159 }
mluis 1:d3b7bde3995c 2160 LMIC.rps = setCr(updr2rps(txdr), (cr_t)LMIC.errcr);
mluis 1:d3b7bde3995c 2161 LMIC.dndr = txdr; // carry TX datarate (can be != LMIC.datarate) over to txDone/setupRx1
mluis 1:d3b7bde3995c 2162 LMIC.opmode = (LMIC.opmode & ~(OP_POLL|OP_RNDTX)) | OP_TXRXPEND | OP_NEXTCHNL;
mluis 1:d3b7bde3995c 2163 updateTx(txbeg);
mluis 1:d3b7bde3995c 2164 os_radio(RADIO_TX);
mluis 0:62d1edcc13d1 2165 return;
mluis 0:62d1edcc13d1 2166 }
mluis 1:d3b7bde3995c 2167 // Cannot yet TX
mluis 1:d3b7bde3995c 2168 if( (LMIC.opmode & OP_TRACK) == 0 )
mluis 1:d3b7bde3995c 2169 goto txdelay; // We don't track the beacon - nothing else to do - so wait for the time to TX
mluis 1:d3b7bde3995c 2170 // Consider RX tasks
mluis 1:d3b7bde3995c 2171 if( txbeg == 0 ) // zero indicates no TX pending
mluis 1:d3b7bde3995c 2172 txbeg += 1; // TX delayed by one tick (insignificant amount of time)
mluis 0:62d1edcc13d1 2173 } else {
mluis 1:d3b7bde3995c 2174 // No TX pending - no scheduled RX
mluis 1:d3b7bde3995c 2175 if( (LMIC.opmode & OP_TRACK) == 0 )
mluis 1:d3b7bde3995c 2176 return;
mluis 0:62d1edcc13d1 2177 }
mluis 0:62d1edcc13d1 2178
mluis 0:62d1edcc13d1 2179 // Are we pingable?
mluis 0:62d1edcc13d1 2180 checkrx:
mluis 0:62d1edcc13d1 2181 if( (LMIC.opmode & OP_PINGINI) != 0 ) {
mluis 1:d3b7bde3995c 2182 // One more RX slot in this beacon period?
mluis 1:d3b7bde3995c 2183 if( rxschedNext(&LMIC.ping, now+RX_RAMPUP) ) {
mluis 1:d3b7bde3995c 2184 if( txbeg != 0 && (txbeg - LMIC.ping.rxtime) < 0 )
mluis 1:d3b7bde3995c 2185 goto txdelay;
mluis 1:d3b7bde3995c 2186 LMIC.rxsyms = LMIC.ping.rxsyms;
mluis 1:d3b7bde3995c 2187 LMIC.rxtime = LMIC.ping.rxtime;
mluis 1:d3b7bde3995c 2188 LMIC.freq = LMIC.ping.freq;
mluis 1:d3b7bde3995c 2189 LMIC.rps = dndr2rps(LMIC.ping.dr);
mluis 1:d3b7bde3995c 2190 LMIC.dataLen = 0;
mluis 1:d3b7bde3995c 2191 ASSERT(LMIC.rxtime - now+RX_RAMPUP >= 0 );
mluis 1:d3b7bde3995c 2192 os_setTimedCallback(&LMIC.osjob, LMIC.rxtime - RX_RAMPUP, FUNC_ADDR(startRxPing));
mluis 1:d3b7bde3995c 2193 return;
mluis 1:d3b7bde3995c 2194 }
mluis 1:d3b7bde3995c 2195 // no - just wait for the beacon
mluis 0:62d1edcc13d1 2196 }
mluis 0:62d1edcc13d1 2197
mluis 0:62d1edcc13d1 2198 if( txbeg != 0 && (txbeg - rxtime) < 0 )
mluis 1:d3b7bde3995c 2199 goto txdelay;
mluis 0:62d1edcc13d1 2200
mluis 0:62d1edcc13d1 2201 setBcnRxParams();
mluis 0:62d1edcc13d1 2202 LMIC.rxsyms = LMIC.bcnRxsyms;
mluis 0:62d1edcc13d1 2203 LMIC.rxtime = LMIC.bcnRxtime;
mluis 0:62d1edcc13d1 2204 if( now - rxtime >= 0 ) {
mluis 1:d3b7bde3995c 2205 LMIC.osjob.func = FUNC_ADDR(processBeacon);
mluis 1:d3b7bde3995c 2206 os_radio(RADIO_RX);
mluis 1:d3b7bde3995c 2207 return;
mluis 0:62d1edcc13d1 2208 }
mluis 0:62d1edcc13d1 2209 os_setTimedCallback(&LMIC.osjob, rxtime, FUNC_ADDR(startRxBcn));
mluis 0:62d1edcc13d1 2210 return;
mluis 0:62d1edcc13d1 2211
mluis 0:62d1edcc13d1 2212 txdelay:
mluis 0:62d1edcc13d1 2213 EV(devCond, INFO, (e_.reason = EV::devCond_t::TX_DELAY,
mluis 1:d3b7bde3995c 2214 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2215 e_.info = osticks2ms(txbeg-now),
mluis 1:d3b7bde3995c 2216 e_.info2 = LMIC.seqnoUp-1));
mluis 0:62d1edcc13d1 2217 os_setTimedCallback(&LMIC.osjob, txbeg-TX_RAMPUP, FUNC_ADDR(runEngineUpdate));
mluis 0:62d1edcc13d1 2218 }
mluis 0:62d1edcc13d1 2219
mluis 0:62d1edcc13d1 2220
mluis 0:62d1edcc13d1 2221 void LMIC_setAdrMode (bit_t enabled) {
mluis 0:62d1edcc13d1 2222 LMIC.adrEnabled = enabled ? FCT_ADREN : 0;
mluis 0:62d1edcc13d1 2223 }
mluis 0:62d1edcc13d1 2224
mluis 0:62d1edcc13d1 2225
mluis 0:62d1edcc13d1 2226 // Should we have/need an ext. API like this?
mluis 0:62d1edcc13d1 2227 void LMIC_setDrTxpow (dr_t dr, s1_t txpow) {
mluis 0:62d1edcc13d1 2228 setDrTxpow(DRCHG_SET, dr, txpow);
mluis 0:62d1edcc13d1 2229 }
mluis 0:62d1edcc13d1 2230
mluis 0:62d1edcc13d1 2231
mluis 0:62d1edcc13d1 2232 void LMIC_shutdown (void) {
mluis 0:62d1edcc13d1 2233 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 2234 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 2235 LMIC.opmode |= OP_SHUTDOWN;
mluis 0:62d1edcc13d1 2236 }
mluis 0:62d1edcc13d1 2237
mluis 0:62d1edcc13d1 2238
mluis 0:62d1edcc13d1 2239 void LMIC_reset (void) {
mluis 0:62d1edcc13d1 2240 EV(devCond, INFO, (e_.reason = EV::devCond_t::LMIC_EV,
mluis 1:d3b7bde3995c 2241 e_.eui = MAIN::CDEV->getEui(),
mluis 1:d3b7bde3995c 2242 e_.info = EV_RESET));
mluis 0:62d1edcc13d1 2243 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 2244 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 2245
mluis 0:62d1edcc13d1 2246 os_clearMem((xref2u1_t)&LMIC,SIZEOFEXPR(LMIC));
mluis 1:d3b7bde3995c 2247 LMIC.devaddr = 0;
mluis 1:d3b7bde3995c 2248 LMIC.devNonce = os_getRndU2();
mluis 1:d3b7bde3995c 2249 LMIC.opmode = OP_NONE;
mluis 1:d3b7bde3995c 2250 LMIC.errcr = CR_4_5;
mluis 1:d3b7bde3995c 2251 LMIC.adrEnabled = FCT_ADREN;
mluis 1:d3b7bde3995c 2252 LMIC.dn2Dr = DR_DNW2; // we need this for 2nd DN window of join accept
mluis 1:d3b7bde3995c 2253 LMIC.dn2Freq = FREQ_DNW2; // ditto
mluis 1:d3b7bde3995c 2254 LMIC.ping.freq = FREQ_PING; // defaults for ping
mluis 1:d3b7bde3995c 2255 LMIC.ping.dr = DR_PING; // ditto
mluis 1:d3b7bde3995c 2256 LMIC.ping.intvExp = 0xFF;
mluis 1:d3b7bde3995c 2257 #if defined(CFG_us915)
mluis 0:62d1edcc13d1 2258 initDefaultChannels();
mluis 0:62d1edcc13d1 2259 #endif
mluis 1:d3b7bde3995c 2260 DO_DEVDB(LMIC.devaddr, devaddr);
mluis 1:d3b7bde3995c 2261 DO_DEVDB(LMIC.devNonce, devNonce);
mluis 1:d3b7bde3995c 2262 DO_DEVDB(LMIC.dn2Dr, dn2Dr);
mluis 1:d3b7bde3995c 2263 DO_DEVDB(LMIC.dn2Freq, dn2Freq);
mluis 1:d3b7bde3995c 2264 DO_DEVDB(LMIC.ping.freq, pingFreq);
mluis 1:d3b7bde3995c 2265 DO_DEVDB(LMIC.ping.dr, pingDr);
mluis 1:d3b7bde3995c 2266 DO_DEVDB(LMIC.ping.intvExp, pingIntvExp);
mluis 0:62d1edcc13d1 2267 }
mluis 0:62d1edcc13d1 2268
mluis 0:62d1edcc13d1 2269
mluis 0:62d1edcc13d1 2270 void LMIC_init (void) {
mluis 0:62d1edcc13d1 2271 LMIC.opmode = OP_SHUTDOWN;
mluis 0:62d1edcc13d1 2272 }
mluis 0:62d1edcc13d1 2273
mluis 0:62d1edcc13d1 2274
mluis 0:62d1edcc13d1 2275 void LMIC_clrTxData (void) {
mluis 0:62d1edcc13d1 2276 LMIC.opmode &= ~(OP_TXDATA|OP_TXRXPEND|OP_POLL);
mluis 0:62d1edcc13d1 2277 LMIC.pendTxLen = 0;
mluis 0:62d1edcc13d1 2278 if( (LMIC.opmode & (OP_JOINING|OP_SCAN)) != 0 ) // do not interfere with JOINING
mluis 1:d3b7bde3995c 2279 return;
mluis 0:62d1edcc13d1 2280 os_clearCallback(&LMIC.osjob);
mluis 0:62d1edcc13d1 2281 os_radio(RADIO_RST);
mluis 0:62d1edcc13d1 2282 engineUpdate();
mluis 0:62d1edcc13d1 2283 }
mluis 0:62d1edcc13d1 2284
mluis 0:62d1edcc13d1 2285
mluis 0:62d1edcc13d1 2286 void LMIC_setTxData (void) {
mluis 0:62d1edcc13d1 2287 LMIC.opmode |= OP_TXDATA;
mluis 0:62d1edcc13d1 2288 if( (LMIC.opmode & OP_JOINING) == 0 )
mluis 1:d3b7bde3995c 2289 LMIC.txCnt = 0; // cancel any ongoing TX/RX retries
mluis 0:62d1edcc13d1 2290 engineUpdate();
mluis 0:62d1edcc13d1 2291 }
mluis 0:62d1edcc13d1 2292
mluis 0:62d1edcc13d1 2293
mluis 0:62d1edcc13d1 2294 //
mluis 0:62d1edcc13d1 2295 int LMIC_setTxData2 (u1_t port, xref2u1_t data, u1_t dlen, u1_t confirmed) {
mluis 0:62d1edcc13d1 2296 if( dlen > SIZEOFEXPR(LMIC.pendTxData) )
mluis 1:d3b7bde3995c 2297 return -2;
mluis 0:62d1edcc13d1 2298 if( data != (xref2u1_t)0 )
mluis 1:d3b7bde3995c 2299 os_copyMem(LMIC.pendTxData, data, dlen);
mluis 0:62d1edcc13d1 2300 LMIC.pendTxConf = confirmed;
mluis 0:62d1edcc13d1 2301 LMIC.pendTxPort = port;
mluis 0:62d1edcc13d1 2302 LMIC.pendTxLen = dlen;
mluis 0:62d1edcc13d1 2303 LMIC_setTxData();
mluis 0:62d1edcc13d1 2304 return 0;
mluis 0:62d1edcc13d1 2305 }
mluis 0:62d1edcc13d1 2306
pnysten 2:bebd6b2e3d18 2307 /*u1_t* LMIC_getEui() {
pnysten 2:bebd6b2e3d18 2308 return MAIN::CDEV->getEui();
pnysten 2:bebd6b2e3d18 2309 }*/
pnysten 2:bebd6b2e3d18 2310
mluis 0:62d1edcc13d1 2311
mluis 0:62d1edcc13d1 2312 // Send a payload-less message to signal device is alive
mluis 0:62d1edcc13d1 2313 void LMIC_sendAlive (void) {
mluis 0:62d1edcc13d1 2314 LMIC.opmode |= OP_POLL;
mluis 0:62d1edcc13d1 2315 engineUpdate();
mluis 0:62d1edcc13d1 2316 }
mluis 0:62d1edcc13d1 2317
mluis 0:62d1edcc13d1 2318
mluis 0:62d1edcc13d1 2319 // Check if other networks are around.
mluis 0:62d1edcc13d1 2320 void LMIC_tryRejoin (void) {
mluis 0:62d1edcc13d1 2321 LMIC.opmode |= OP_REJOIN;
mluis 0:62d1edcc13d1 2322 engineUpdate();
mluis 0:62d1edcc13d1 2323 }
mluis 0:62d1edcc13d1 2324
mluis 1:d3b7bde3995c 2325 //! \brief Setup given session keys
mluis 1:d3b7bde3995c 2326 //! and put the MAC in a state as if
mluis 1:d3b7bde3995c 2327 //! a join request/accept would have negotiated just these keys.
mluis 1:d3b7bde3995c 2328 //! It is crucial that the combinations `devaddr/nwkkey` and `devaddr/artkey`
mluis 1:d3b7bde3995c 2329 //! are unique within the network identified by `netid`.
mluis 1:d3b7bde3995c 2330 //! NOTE: on Harvard architectures when session keys are in flash:
mluis 1:d3b7bde3995c 2331 //! Caller has to fill in LMIC.{nwk,art}Key before and pass {nwk,art}Key are NULL
mluis 1:d3b7bde3995c 2332 //! \param netid a 24 bit number describing the network id this device is using
mluis 1:d3b7bde3995c 2333 //! \param devaddr the 32 bit session address of the device. It is strongly recommended
mluis 1:d3b7bde3995c 2334 //! to ensure that different devices use different numbers with high probability.
mluis 1:d3b7bde3995c 2335 //! \param nwkKey the 16 byte network session key used for message integrity.
mluis 1:d3b7bde3995c 2336 //! If NULL the caller has copied the key into `LMIC.nwkKey` before.
mluis 1:d3b7bde3995c 2337 //! \param artKey the 16 byte application router session key used for message confidentiality.
mluis 1:d3b7bde3995c 2338 //! If NULL the caller has copied the key into `LMIC.artKey` before.
mluis 1:d3b7bde3995c 2339 void LMIC_setSession (u4_t netid, devaddr_t devaddr, xref2u1_t nwkKey, xref2u1_t artKey) {
mluis 0:62d1edcc13d1 2340 LMIC.netid = netid;
mluis 0:62d1edcc13d1 2341 LMIC.devaddr = devaddr;
mluis 1:d3b7bde3995c 2342 if( nwkKey != (xref2u1_t)0 )
mluis 1:d3b7bde3995c 2343 os_copyMem(LMIC.nwkKey, nwkKey, 16);
mluis 1:d3b7bde3995c 2344 if( artKey != (xref2u1_t)0 )
mluis 1:d3b7bde3995c 2345 os_copyMem(LMIC.artKey, artKey, 16);
mluis 0:62d1edcc13d1 2346
mluis 1:d3b7bde3995c 2347 #if defined(CFG_eu868)
mluis 0:62d1edcc13d1 2348 initDefaultChannels(0);
mluis 0:62d1edcc13d1 2349 #endif
mluis 1:d3b7bde3995c 2350
mluis 1:d3b7bde3995c 2351 LMIC.opmode &= ~(OP_JOINING|OP_TRACK|OP_REJOIN|OP_TXRXPEND|OP_PINGINI);
mluis 1:d3b7bde3995c 2352 LMIC.opmode |= OP_NEXTCHNL;
mluis 0:62d1edcc13d1 2353 stateJustJoined();
mluis 0:62d1edcc13d1 2354 }
mluis 1:d3b7bde3995c 2355
mluis 1:d3b7bde3995c 2356 // Enable/disable link check validation.
mluis 1:d3b7bde3995c 2357 // LMIC sets the ADRACKREQ bit in UP frames if there were no DN frames
mluis 1:d3b7bde3995c 2358 // for a while. It expects the network to provide a DN message to prove
mluis 1:d3b7bde3995c 2359 // connectivity with a span of UP frames. If this no such prove is coming
mluis 1:d3b7bde3995c 2360 // then the datarate is lowered and a LINK_DEAD event is generated.
mluis 1:d3b7bde3995c 2361 // This mode can be disabled and no connectivity prove (ADRACKREQ) is requested
mluis 1:d3b7bde3995c 2362 // nor is the datarate changed.
mluis 1:d3b7bde3995c 2363 // This must be called only if a session is established (e.g. after EV_JOINED)
mluis 1:d3b7bde3995c 2364 void LMIC_setLinkCheckMode (bit_t enabled) {
mluis 1:d3b7bde3995c 2365 LMIC.adrChanged = 0;
mluis 1:d3b7bde3995c 2366 LMIC.adrAckReq = enabled ? LINK_CHECK_INIT : LINK_CHECK_OFF;
mluis 1:d3b7bde3995c 2367 }
mluis 1:d3b7bde3995c 2368
mluis 1:d3b7bde3995c 2369