wayne roberts / sx12xx_hal

Hardware Abstraction Layer, permitting any LoRa application to use any LoRa radio chip

Dependents:   alarm_slave alarm_master lora_p2p lorawan1v1 ... more

radio chip selection

Radio chip driver is not included, allowing choice of radio device.
If you're using SX1272 or SX1276, then import sx127x driver into your program.
if you're using SX1261 or SX1262, then import sx126x driver into your program.
if you're using SX1280, then import sx1280 driver into your program.
if you're using LR1110, then import LR1110 driver into your program.
If you're using NAmote72 or Murata discovery, then you must import only sx127x driver.
If you're using Type1SJ select target DISCO_L072CZ_LRWAN1 and import sx126x driver into your program.

Pin assigned to arduino LoRa radio shield form-factor

radio_sx127x.cpp@1:e79b0a55135f, 2018-07-16 (annotated)

Committer:
Wayne Roberts
Date:
Mon Jul 16 11:15:59 2018 -0700
Revision:
1:e79b0a55135f
Parent:
0:9c052ff8dd6a
Child:
6:b7bbf31e06e4
update sx1280 HAL to work with current sx1280 driver

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wayne Roberts 0:9c052ff8dd6a 1 #include "radio.h"
Wayne Roberts 0:9c052ff8dd6a 2 #ifdef SX127x_H
Wayne Roberts 0:9c052ff8dd6a 3
Wayne Roberts 0:9c052ff8dd6a 4 LowPowerTimer Radio::lpt;
Wayne Roberts 0:9c052ff8dd6a 5
Wayne Roberts 0:9c052ff8dd6a 6 void Radio::Sleep()
Wayne Roberts 0:9c052ff8dd6a 7 {
Wayne Roberts 0:9c052ff8dd6a 8 radio.set_opmode(RF_OPMODE_SLEEP);
Wayne Roberts 0:9c052ff8dd6a 9 }
Wayne Roberts 0:9c052ff8dd6a 10
Wayne Roberts 0:9c052ff8dd6a 11 void Radio::Standby()
Wayne Roberts 0:9c052ff8dd6a 12 {
Wayne Roberts 0:9c052ff8dd6a 13 radio.set_opmode(RF_OPMODE_STANDBY);
Wayne Roberts 0:9c052ff8dd6a 14 }
Wayne Roberts 0:9c052ff8dd6a 15
Wayne Roberts 0:9c052ff8dd6a 16 bool Radio::CheckRfFrequency(unsigned hz)
Wayne Roberts 0:9c052ff8dd6a 17 {
Wayne Roberts 0:9c052ff8dd6a 18 return true;
Wayne Roberts 0:9c052ff8dd6a 19 }
Wayne Roberts 0:9c052ff8dd6a 20
Wayne Roberts 0:9c052ff8dd6a 21 void Radio::SetChannel(unsigned hz)
Wayne Roberts 0:9c052ff8dd6a 22 {
Wayne Roberts 0:9c052ff8dd6a 23 radio.set_frf_MHz(hz / 1000000.0);
Wayne Roberts 0:9c052ff8dd6a 24 }
Wayne Roberts 0:9c052ff8dd6a 25
Wayne Roberts 0:9c052ff8dd6a 26 float Radio::getFrfMHz()
Wayne Roberts 0:9c052ff8dd6a 27 {
Wayne Roberts 0:9c052ff8dd6a 28 return radio.get_frf_MHz();
Wayne Roberts 0:9c052ff8dd6a 29 }
Wayne Roberts 0:9c052ff8dd6a 30
Wayne Roberts 0:9c052ff8dd6a 31 LowPowerTimeout TxTimeoutEvent;
Wayne Roberts 0:9c052ff8dd6a 32
Wayne Roberts 0:9c052ff8dd6a 33 void SX1272OnTimeoutIrq( void )
Wayne Roberts 0:9c052ff8dd6a 34 {
Wayne Roberts 0:9c052ff8dd6a 35 Radio::radio.set_opmode(RF_OPMODE_STANDBY);
Wayne Roberts 0:9c052ff8dd6a 36 }
Wayne Roberts 0:9c052ff8dd6a 37
Wayne Roberts 0:9c052ff8dd6a 38 void Radio::SetTxContinuousWave(unsigned hz, int8_t dbm, unsigned timeout_us)
Wayne Roberts 0:9c052ff8dd6a 39 {
Wayne Roberts 0:9c052ff8dd6a 40 Radio::SetChannel(hz);
Wayne Roberts 0:9c052ff8dd6a 41 /* TODO: fsk enable, set regPacketConfig2.datamode */
Wayne Roberts 0:9c052ff8dd6a 42 set_tx_dbm(dbm);
Wayne Roberts 0:9c052ff8dd6a 43 TxTimeoutEvent.attach_us(SX1272OnTimeoutIrq, timeout_us);
Wayne Roberts 0:9c052ff8dd6a 44 radio.set_opmode(RF_OPMODE_TRANSMITTER);
Wayne Roberts 0:9c052ff8dd6a 45 }
Wayne Roberts 0:9c052ff8dd6a 46
Wayne Roberts 0:9c052ff8dd6a 47 #define LORA_MAC_PRIVATE_SYNCWORD 0x12
Wayne Roberts 0:9c052ff8dd6a 48 #define LORA_MAC_PUBLIC_SYNCWORD 0x34
Wayne Roberts 0:9c052ff8dd6a 49 void Radio::SetPublicNetwork(bool en)
Wayne Roberts 0:9c052ff8dd6a 50 {
Wayne Roberts 0:9c052ff8dd6a 51 radio.write_reg(REG_LR_SYNC_BYTE, en ? LORA_MAC_PUBLIC_SYNCWORD : LORA_MAC_PRIVATE_SYNCWORD);
Wayne Roberts 0:9c052ff8dd6a 52 }
Wayne Roberts 0:9c052ff8dd6a 53
Wayne Roberts 0:9c052ff8dd6a 54 uint32_t Radio::Random(void)
Wayne Roberts 0:9c052ff8dd6a 55 {
Wayne Roberts 0:9c052ff8dd6a 56 uint32_t ret = 0;
Wayne Roberts 0:9c052ff8dd6a 57 unsigned i;
Wayne Roberts 0:9c052ff8dd6a 58
Wayne Roberts 0:9c052ff8dd6a 59 radio.set_opmode(RF_OPMODE_RECEIVER);
Wayne Roberts 0:9c052ff8dd6a 60 for (i = 0; i < 32; i++) {
Wayne Roberts 0:9c052ff8dd6a 61 uint32_t r;
Wayne Roberts 0:9c052ff8dd6a 62 wait_us(3000);
Wayne Roberts 0:9c052ff8dd6a 63 r = radio.read_reg(REG_LR_WIDEBAND_RSSI);
Wayne Roberts 0:9c052ff8dd6a 64 r <<= ((i & 7) << 2);
Wayne Roberts 0:9c052ff8dd6a 65 ret ^= r;
Wayne Roberts 0:9c052ff8dd6a 66 }
Wayne Roberts 0:9c052ff8dd6a 67
Wayne Roberts 0:9c052ff8dd6a 68 return ret;
Wayne Roberts 0:9c052ff8dd6a 69 }
Wayne Roberts 0:9c052ff8dd6a 70
Wayne Roberts 0:9c052ff8dd6a 71 void Radio::LoRaPacketConfig(unsigned preambleLen, bool fixLen, bool crcOn, bool invIQ)
Wayne Roberts 0:9c052ff8dd6a 72 {
Wayne Roberts 0:9c052ff8dd6a 73 lora.RegPreamble = preambleLen;
Wayne Roberts 0:9c052ff8dd6a 74 radio.write_u16(REG_LR_PREAMBLEMSB, lora.RegPreamble);
Wayne Roberts 0:9c052ff8dd6a 75
Wayne Roberts 0:9c052ff8dd6a 76 if (radio.type == SX1276) {
Wayne Roberts 0:9c052ff8dd6a 77 lora.RegModemConfig.sx1276bits.ImplicitHeaderModeOn = fixLen;
Wayne Roberts 0:9c052ff8dd6a 78 lora.RegModemConfig2.sx1276bits.RxPayloadCrcOn = crcOn;
Wayne Roberts 0:9c052ff8dd6a 79 radio.write_reg(REG_LR_MODEMCONFIG2, lora.RegModemConfig2.octet);
Wayne Roberts 0:9c052ff8dd6a 80 } else if (radio.type == SX1272) {
Wayne Roberts 0:9c052ff8dd6a 81 lora.RegModemConfig.sx1272bits.ImplicitHeaderModeOn = fixLen;
Wayne Roberts 0:9c052ff8dd6a 82 lora.RegModemConfig.sx1272bits.RxPayloadCrcOn = crcOn;
Wayne Roberts 0:9c052ff8dd6a 83 }
Wayne Roberts 0:9c052ff8dd6a 84
Wayne Roberts 0:9c052ff8dd6a 85 radio.write_reg(REG_LR_MODEMCONFIG, lora.RegModemConfig.octet);
Wayne Roberts 0:9c052ff8dd6a 86
Wayne Roberts 0:9c052ff8dd6a 87 lora.invert_tx(invIQ);
Wayne Roberts 0:9c052ff8dd6a 88 lora.invert_rx(invIQ);
Wayne Roberts 0:9c052ff8dd6a 89 }
Wayne Roberts 0:9c052ff8dd6a 90
Wayne Roberts 0:9c052ff8dd6a 91 void Radio::GFSKModemConfig(unsigned bps, unsigned bw_hz, unsigned fdev_hz)
Wayne Roberts 0:9c052ff8dd6a 92 {
Wayne Roberts 0:9c052ff8dd6a 93 if (radio.RegOpMode.bits.LongRangeMode)
Wayne Roberts 0:9c052ff8dd6a 94 fsk.enable(false);
Wayne Roberts 0:9c052ff8dd6a 95
Wayne Roberts 0:9c052ff8dd6a 96 fsk.set_bitrate(bps);
Wayne Roberts 0:9c052ff8dd6a 97
Wayne Roberts 0:9c052ff8dd6a 98 fsk.set_rx_dcc_bw_hz(bw_hz, 0);
Wayne Roberts 0:9c052ff8dd6a 99 fsk.set_rx_dcc_bw_hz(bw_hz * 1.5, 1);
Wayne Roberts 0:9c052ff8dd6a 100
Wayne Roberts 0:9c052ff8dd6a 101 fsk.set_tx_fdev_hz(fdev_hz);
Wayne Roberts 0:9c052ff8dd6a 102 }
Wayne Roberts 0:9c052ff8dd6a 103
Wayne Roberts 0:9c052ff8dd6a 104
Wayne Roberts 0:9c052ff8dd6a 105 void Radio::GFSKPacketConfig(unsigned preambleLen, bool fixLen, bool crcOn)
Wayne Roberts 0:9c052ff8dd6a 106 {
Wayne Roberts 0:9c052ff8dd6a 107 if (radio.RegOpMode.bits.LongRangeMode)
Wayne Roberts 0:9c052ff8dd6a 108 fsk.enable(false);
Wayne Roberts 0:9c052ff8dd6a 109
Wayne Roberts 0:9c052ff8dd6a 110 radio.write_u16(REG_FSK_PREAMBLEMSB, preambleLen);
Wayne Roberts 0:9c052ff8dd6a 111
Wayne Roberts 0:9c052ff8dd6a 112 fsk.RegPktConfig1.bits.PacketFormatVariable = fixLen ? 0 : 1;
Wayne Roberts 0:9c052ff8dd6a 113 fsk.RegPktConfig1.bits.CrcOn = crcOn;
Wayne Roberts 0:9c052ff8dd6a 114 radio.write_reg(REG_FSK_PACKETCONFIG1, fsk.RegPktConfig1.octet);
Wayne Roberts 0:9c052ff8dd6a 115 }
Wayne Roberts 0:9c052ff8dd6a 116
Wayne Roberts 0:9c052ff8dd6a 117 void Radio::SetLoRaSymbolTimeout(uint8_t symbs)
Wayne Roberts 0:9c052ff8dd6a 118 {
Wayne Roberts 0:9c052ff8dd6a 119 if (!radio.RegOpMode.bits.LongRangeMode)
Wayne Roberts 0:9c052ff8dd6a 120 lora.enable();
Wayne Roberts 0:9c052ff8dd6a 121
Wayne Roberts 0:9c052ff8dd6a 122 lora.RegModemConfig2.sx1272bits.SymbTimeoutMsb = 0;
Wayne Roberts 0:9c052ff8dd6a 123 radio.write_reg(REG_LR_MODEMCONFIG2, lora.RegModemConfig2.octet);
Wayne Roberts 0:9c052ff8dd6a 124 radio.write_reg(REG_LR_SYMBTIMEOUTLSB, symbs);
Wayne Roberts 0:9c052ff8dd6a 125 }
Wayne Roberts 0:9c052ff8dd6a 126
Wayne Roberts 0:9c052ff8dd6a 127 void Radio::LoRaModemConfig(unsigned bwKHz, uint8_t sf, uint8_t coderate)
Wayne Roberts 0:9c052ff8dd6a 128 {
Wayne Roberts 0:9c052ff8dd6a 129 float sp;
Wayne Roberts 0:9c052ff8dd6a 130 if (!radio.RegOpMode.bits.LongRangeMode)
Wayne Roberts 0:9c052ff8dd6a 131 lora.enable();
Wayne Roberts 0:9c052ff8dd6a 132
Wayne Roberts 0:9c052ff8dd6a 133 lora.RegModemConfig2.sx1276bits.SpreadingFactor = sf;
Wayne Roberts 0:9c052ff8dd6a 134 radio.write_reg(REG_LR_MODEMCONFIG2, lora.RegModemConfig2.octet);
Wayne Roberts 0:9c052ff8dd6a 135
Wayne Roberts 0:9c052ff8dd6a 136 lora.setBw_KHz(bwKHz);
Wayne Roberts 0:9c052ff8dd6a 137
Wayne Roberts 0:9c052ff8dd6a 138 if (radio.type == SX1276) {
Wayne Roberts 0:9c052ff8dd6a 139 lora.RegModemConfig.sx1276bits.CodingRate = coderate;
Wayne Roberts 0:9c052ff8dd6a 140
Wayne Roberts 0:9c052ff8dd6a 141 sp = lora.get_symbol_period();
Wayne Roberts 0:9c052ff8dd6a 142 if (sp > 16)
Wayne Roberts 0:9c052ff8dd6a 143 lora.RegModemConfig3.sx1276bits.LowDataRateOptimize = 1;
Wayne Roberts 0:9c052ff8dd6a 144 else
Wayne Roberts 0:9c052ff8dd6a 145 lora.RegModemConfig3.sx1276bits.LowDataRateOptimize = 0;
Wayne Roberts 0:9c052ff8dd6a 146
Wayne Roberts 0:9c052ff8dd6a 147 radio.write_reg(REG_LR_MODEMCONFIG3, lora.RegModemConfig3.octet);
Wayne Roberts 0:9c052ff8dd6a 148 } else if (radio.type == SX1272) {
Wayne Roberts 0:9c052ff8dd6a 149 lora.RegModemConfig.sx1272bits.CodingRate = coderate;
Wayne Roberts 0:9c052ff8dd6a 150
Wayne Roberts 0:9c052ff8dd6a 151 if (lora.get_symbol_period() > 16)
Wayne Roberts 0:9c052ff8dd6a 152 lora.RegModemConfig.sx1272bits.LowDataRateOptimize = 1;
Wayne Roberts 0:9c052ff8dd6a 153 else
Wayne Roberts 0:9c052ff8dd6a 154 lora.RegModemConfig.sx1272bits.LowDataRateOptimize = 0;
Wayne Roberts 0:9c052ff8dd6a 155 }
Wayne Roberts 0:9c052ff8dd6a 156 radio.write_reg(REG_LR_MODEMCONFIG, lora.RegModemConfig.octet);
Wayne Roberts 0:9c052ff8dd6a 157 }
Wayne Roberts 0:9c052ff8dd6a 158
Wayne Roberts 1:e79b0a55135f 159 void Radio::SetRxMaxPayloadLength(uint8_t max)
Wayne Roberts 0:9c052ff8dd6a 160 {
Wayne Roberts 1:e79b0a55135f 161 if (radio.RegOpMode.bits.LongRangeMode)
Wayne Roberts 1:e79b0a55135f 162 radio.write_reg(REG_LR_RX_MAX_PAYLOADLENGTH, max);
Wayne Roberts 1:e79b0a55135f 163 else
Wayne Roberts 1:e79b0a55135f 164 radio.write_reg(REG_FSK_PAYLOADLENGTH, max);
Wayne Roberts 0:9c052ff8dd6a 165 }
Wayne Roberts 0:9c052ff8dd6a 166
Wayne Roberts 0:9c052ff8dd6a 167 const RadioEvents_t* RadioEvents;
Wayne Roberts 0:9c052ff8dd6a 168
Wayne Roberts 0:9c052ff8dd6a 169
Wayne Roberts 0:9c052ff8dd6a 170 volatile struct pe {
Wayne Roberts 0:9c052ff8dd6a 171 uint8_t dio0 : 1;
Wayne Roberts 0:9c052ff8dd6a 172 uint8_t dio1 : 1;
Wayne Roberts 0:9c052ff8dd6a 173 uint8_t txing : 1;
Wayne Roberts 0:9c052ff8dd6a 174 } pinEvent;
Wayne Roberts 0:9c052ff8dd6a 175
Wayne Roberts 0:9c052ff8dd6a 176 void
Wayne Roberts 0:9c052ff8dd6a 177 Radio::dio0UserContext()
Wayne Roberts 0:9c052ff8dd6a 178 {
Wayne Roberts 0:9c052ff8dd6a 179 service_action_e act = lora.service();
Wayne Roberts 0:9c052ff8dd6a 180
Wayne Roberts 0:9c052ff8dd6a 181 if (!pinEvent.txing) {
Wayne Roberts 0:9c052ff8dd6a 182 if (act == SERVICE_READ_FIFO && RadioEvents->RxDone) {
Wayne Roberts 0:9c052ff8dd6a 183 int8_t rssi;
Wayne Roberts 0:9c052ff8dd6a 184 float snr = lora.RegPktSnrValue / 4.0;
Wayne Roberts 0:9c052ff8dd6a 185
Wayne Roberts 0:9c052ff8dd6a 186 rssi = lora.get_pkt_rssi();
Wayne Roberts 0:9c052ff8dd6a 187 if (snr < 0)
Wayne Roberts 0:9c052ff8dd6a 188 rssi += snr;
Wayne Roberts 0:9c052ff8dd6a 189 RadioEvents->RxDone(lora.RegRxNbBytes, rssi, snr);
Wayne Roberts 0:9c052ff8dd6a 190 }
Wayne Roberts 0:9c052ff8dd6a 191 } else if (act == SERVICE_TX_DONE) {
Wayne Roberts 0:9c052ff8dd6a 192 if (RadioEvents->TxDone_botHalf)
Wayne Roberts 0:9c052ff8dd6a 193 RadioEvents->TxDone_botHalf();
Wayne Roberts 0:9c052ff8dd6a 194 }
Wayne Roberts 0:9c052ff8dd6a 195 }
Wayne Roberts 0:9c052ff8dd6a 196
Wayne Roberts 0:9c052ff8dd6a 197 volatile us_timestamp_t Radio::irqAt;
Wayne Roberts 0:9c052ff8dd6a 198
Wayne Roberts 0:9c052ff8dd6a 199 void Radio::dio0isr()
Wayne Roberts 0:9c052ff8dd6a 200 {
Wayne Roberts 0:9c052ff8dd6a 201 irqAt = lpt.read_us();
Wayne Roberts 0:9c052ff8dd6a 202
Wayne Roberts 0:9c052ff8dd6a 203 if (pinEvent.txing) {
Wayne Roberts 0:9c052ff8dd6a 204 /* TxDone handling requires low latency */
Wayne Roberts 0:9c052ff8dd6a 205 if (RadioEvents->TxDone_topHalf)
Wayne Roberts 0:9c052ff8dd6a 206 RadioEvents->TxDone_topHalf(); // TODO in callback read irqAt for timestamp of interrupt
Wayne Roberts 0:9c052ff8dd6a 207
Wayne Roberts 0:9c052ff8dd6a 208 }
Wayne Roberts 0:9c052ff8dd6a 209
Wayne Roberts 0:9c052ff8dd6a 210 pinEvent.dio0 = 1;
Wayne Roberts 0:9c052ff8dd6a 211 }
Wayne Roberts 0:9c052ff8dd6a 212
Wayne Roberts 0:9c052ff8dd6a 213 void Radio::dio1UserContext()
Wayne Roberts 0:9c052ff8dd6a 214 {
Wayne Roberts 0:9c052ff8dd6a 215 lora.RegIrqFlags.octet = radio.read_reg(REG_LR_IRQFLAGS);
Wayne Roberts 0:9c052ff8dd6a 216
Wayne Roberts 0:9c052ff8dd6a 217 if (RadioEvents->RxTimeout)
Wayne Roberts 0:9c052ff8dd6a 218 RadioEvents->RxTimeout();
Wayne Roberts 0:9c052ff8dd6a 219
Wayne Roberts 0:9c052ff8dd6a 220 radio.write_reg(REG_LR_IRQFLAGS, 0x80); // ensure RxTimeout is cleared
Wayne Roberts 0:9c052ff8dd6a 221 }
Wayne Roberts 0:9c052ff8dd6a 222
Wayne Roberts 0:9c052ff8dd6a 223 void Radio::dio1isr()
Wayne Roberts 0:9c052ff8dd6a 224 {
Wayne Roberts 0:9c052ff8dd6a 225 pinEvent.dio1 = 1;
Wayne Roberts 0:9c052ff8dd6a 226 }
Wayne Roberts 0:9c052ff8dd6a 227
Wayne Roberts 0:9c052ff8dd6a 228 void Radio::Init(const RadioEvents_t* e)
Wayne Roberts 0:9c052ff8dd6a 229 {
Wayne Roberts 0:9c052ff8dd6a 230 dio0.rise(dio0isr);
Wayne Roberts 0:9c052ff8dd6a 231 dio1.rise(dio1isr);
Wayne Roberts 0:9c052ff8dd6a 232
Wayne Roberts 0:9c052ff8dd6a 233 radio.rf_switch = rfsw_callback;
Wayne Roberts 0:9c052ff8dd6a 234 boardInit();
Wayne Roberts 0:9c052ff8dd6a 235
Wayne Roberts 0:9c052ff8dd6a 236 RadioEvents = e;
Wayne Roberts 0:9c052ff8dd6a 237 lpt.start();
Wayne Roberts 0:9c052ff8dd6a 238 }
Wayne Roberts 0:9c052ff8dd6a 239
Wayne Roberts 0:9c052ff8dd6a 240 int Radio::Send(uint8_t size, timestamp_t maxListenTime, timestamp_t channelFreeTime, int rssiThresh)
Wayne Roberts 0:9c052ff8dd6a 241 {
Wayne Roberts 0:9c052ff8dd6a 242 if (radio.RegOpMode.bits.Mode == RF_OPMODE_SLEEP) {
Wayne Roberts 0:9c052ff8dd6a 243 radio.set_opmode(RF_OPMODE_STANDBY);
Wayne Roberts 0:9c052ff8dd6a 244 wait_us(1000);
Wayne Roberts 0:9c052ff8dd6a 245 }
Wayne Roberts 0:9c052ff8dd6a 246 radio.write_reg(REG_LR_IRQFLAGS, 0x08); // ensure TxDone is cleared
Wayne Roberts 0:9c052ff8dd6a 247 lora.RegPayloadLength = size;
Wayne Roberts 0:9c052ff8dd6a 248 radio.write_reg(REG_LR_PAYLOADLENGTH, lora.RegPayloadLength);
Wayne Roberts 0:9c052ff8dd6a 249
Wayne Roberts 0:9c052ff8dd6a 250 if (maxListenTime > 0) {
Wayne Roberts 0:9c052ff8dd6a 251 int rssi;
Wayne Roberts 0:9c052ff8dd6a 252 us_timestamp_t startAt, chFreeAt, now;
Wayne Roberts 0:9c052ff8dd6a 253 lora.start_rx(RF_OPMODE_RECEIVER);
Wayne Roberts 0:9c052ff8dd6a 254 startAt = lpt.read_us();
Wayne Roberts 0:9c052ff8dd6a 255 Lstart:
Wayne Roberts 0:9c052ff8dd6a 256 do {
Wayne Roberts 0:9c052ff8dd6a 257 now = lpt.read_us();
Wayne Roberts 0:9c052ff8dd6a 258 if ((now - startAt) > maxListenTime) {
Wayne Roberts 0:9c052ff8dd6a 259 return -1;
Wayne Roberts 0:9c052ff8dd6a 260 }
Wayne Roberts 0:9c052ff8dd6a 261 rssi = lora.get_current_rssi();
Wayne Roberts 0:9c052ff8dd6a 262 } while (rssi > rssiThresh);
Wayne Roberts 0:9c052ff8dd6a 263 chFreeAt = lpt.read_us();
Wayne Roberts 0:9c052ff8dd6a 264 do {
Wayne Roberts 0:9c052ff8dd6a 265 now = lpt.read_us();
Wayne Roberts 0:9c052ff8dd6a 266 rssi = lora.get_current_rssi();
Wayne Roberts 0:9c052ff8dd6a 267 if (rssi > rssiThresh) {
Wayne Roberts 0:9c052ff8dd6a 268 goto Lstart;
Wayne Roberts 0:9c052ff8dd6a 269 }
Wayne Roberts 0:9c052ff8dd6a 270 } while ((now - chFreeAt) < channelFreeTime);
Wayne Roberts 0:9c052ff8dd6a 271 }
Wayne Roberts 0:9c052ff8dd6a 272
Wayne Roberts 0:9c052ff8dd6a 273 lora.start_tx(size);
Wayne Roberts 0:9c052ff8dd6a 274 pinEvent.txing = 1;
Wayne Roberts 0:9c052ff8dd6a 275
Wayne Roberts 0:9c052ff8dd6a 276 return 0;
Wayne Roberts 0:9c052ff8dd6a 277 }
Wayne Roberts 0:9c052ff8dd6a 278
Wayne Roberts 0:9c052ff8dd6a 279 void Radio::Rx(unsigned timeout)
Wayne Roberts 0:9c052ff8dd6a 280 {
Wayne Roberts 0:9c052ff8dd6a 281 if (timeout == 0) {
Wayne Roberts 0:9c052ff8dd6a 282 lora.start_rx(RF_OPMODE_RECEIVER);
Wayne Roberts 0:9c052ff8dd6a 283 } else {
Wayne Roberts 0:9c052ff8dd6a 284 lora.RegIrqFlags.octet = radio.read_reg(REG_LR_IRQFLAGS); // yyy tmp remove
Wayne Roberts 0:9c052ff8dd6a 285 lora.start_rx(RF_OPMODE_RECEIVER_SINGLE);
Wayne Roberts 0:9c052ff8dd6a 286 }
Wayne Roberts 0:9c052ff8dd6a 287
Wayne Roberts 0:9c052ff8dd6a 288 pinEvent.txing = 0;
Wayne Roberts 0:9c052ff8dd6a 289
Wayne Roberts 0:9c052ff8dd6a 290 }
Wayne Roberts 0:9c052ff8dd6a 291
Wayne Roberts 0:9c052ff8dd6a 292
Wayne Roberts 0:9c052ff8dd6a 293 void Radio::ocp(uint8_t ma)
Wayne Roberts 0:9c052ff8dd6a 294 {
Wayne Roberts 0:9c052ff8dd6a 295 if (ma < 130)
Wayne Roberts 0:9c052ff8dd6a 296 radio.RegOcp.bits.OcpTrim = (ma - 45) / 5;
Wayne Roberts 0:9c052ff8dd6a 297 else
Wayne Roberts 0:9c052ff8dd6a 298 radio.RegOcp.bits.OcpTrim = (ma + 30) / 10;
Wayne Roberts 0:9c052ff8dd6a 299 radio.write_reg(REG_OCP, radio.RegOcp.octet);
Wayne Roberts 0:9c052ff8dd6a 300
Wayne Roberts 0:9c052ff8dd6a 301 radio.RegOcp.octet = radio.read_reg(REG_OCP);
Wayne Roberts 0:9c052ff8dd6a 302 if (radio.RegOcp.bits.OcpTrim < 16)
Wayne Roberts 0:9c052ff8dd6a 303 ma = 45 + (5 * radio.RegOcp.bits.OcpTrim);
Wayne Roberts 0:9c052ff8dd6a 304 else if (radio.RegOcp.bits.OcpTrim < 28)
Wayne Roberts 0:9c052ff8dd6a 305 ma = (10 * radio.RegOcp.bits.OcpTrim) - 30;
Wayne Roberts 0:9c052ff8dd6a 306 else
Wayne Roberts 0:9c052ff8dd6a 307 ma = 240;
Wayne Roberts 0:9c052ff8dd6a 308 }
Wayne Roberts 0:9c052ff8dd6a 309
Wayne Roberts 0:9c052ff8dd6a 310
Wayne Roberts 0:9c052ff8dd6a 311 #if 0
Wayne Roberts 0:9c052ff8dd6a 312 void Radio::PrintStatus()
Wayne Roberts 0:9c052ff8dd6a 313 {
Wayne Roberts 0:9c052ff8dd6a 314 #ifdef MAC_DEBUG
Wayne Roberts 0:9c052ff8dd6a 315 radio.RegOpMode.octet = radio.read_reg(REG_OPMODE);
Wayne Roberts 0:9c052ff8dd6a 316 switch (radio.RegOpMode.bits.Mode) {
Wayne Roberts 0:9c052ff8dd6a 317 case RF_OPMODE_SLEEP: printf("SLEEP "); break;
Wayne Roberts 0:9c052ff8dd6a 318 case RF_OPMODE_STANDBY: printf("STBY "); break;
Wayne Roberts 0:9c052ff8dd6a 319 case RF_OPMODE_SYNTHESIZER_TX: printf("FSTX "); break;
Wayne Roberts 0:9c052ff8dd6a 320 case RF_OPMODE_TRANSMITTER: printf("TX "); break;
Wayne Roberts 0:9c052ff8dd6a 321 case RF_OPMODE_SYNTHESIZER_RX: printf("FSRX "); break;
Wayne Roberts 0:9c052ff8dd6a 322 case RF_OPMODE_RECEIVER: printf("RXC "); break;
Wayne Roberts 0:9c052ff8dd6a 323 case RF_OPMODE_RECEIVER_SINGLE: printf("RXS "); break;
Wayne Roberts 0:9c052ff8dd6a 324 case RF_OPMODE_CAD: printf("CAD "); break;
Wayne Roberts 0:9c052ff8dd6a 325 }
Wayne Roberts 0:9c052ff8dd6a 326
Wayne Roberts 0:9c052ff8dd6a 327 printf("dio:%u:%u opmode:%02x %.2fMHz sf%ubw%u ", radio.dio0.read(), radio.dio1.read(), radio.RegOpMode.octet, radio.get_frf_MHz(), lora.getSf(), lora.getBw());
Wayne Roberts 0:9c052ff8dd6a 328 lora.RegIrqFlags.octet = radio.read_reg(REG_LR_IRQFLAGS);
Wayne Roberts 0:9c052ff8dd6a 329 printf("irqFlags:%02x\r\n", lora.RegIrqFlags.octet);
Wayne Roberts 0:9c052ff8dd6a 330 #endif /* MAC_DEBUG */
Wayne Roberts 0:9c052ff8dd6a 331 }
Wayne Roberts 0:9c052ff8dd6a 332 #endif /* if 0 */
Wayne Roberts 0:9c052ff8dd6a 333
Wayne Roberts 0:9c052ff8dd6a 334 #ifdef DUTY_ENABLE
Wayne Roberts 0:9c052ff8dd6a 335 us_timestamp_t
Wayne Roberts 0:9c052ff8dd6a 336 Radio::TimeOnAir(RadioModems_t m, uint8_t pktLen)
Wayne Roberts 0:9c052ff8dd6a 337 {
Wayne Roberts 0:9c052ff8dd6a 338 uint32_t airTime = 0;
Wayne Roberts 0:9c052ff8dd6a 339
Wayne Roberts 0:9c052ff8dd6a 340 switch (m)
Wayne Roberts 0:9c052ff8dd6a 341 {
Wayne Roberts 0:9c052ff8dd6a 342 case MODEM_FSK:
Wayne Roberts 0:9c052ff8dd6a 343 {
Wayne Roberts 0:9c052ff8dd6a 344 /* TODO
Wayne Roberts 0:9c052ff8dd6a 345 airTime = round( ( 8 * ( SX1272.Settings.Fsk.PreambleLen +
Wayne Roberts 0:9c052ff8dd6a 346 ( ( SX1272Read( REG_SYNCCONFIG ) & ~RF_SYNCCONFIG_SYNCSIZE_MASK ) + 1 ) +
Wayne Roberts 0:9c052ff8dd6a 347 ( ( SX1272.Settings.Fsk.FixLen == 0x01 ) ? 0.0 : 1.0 ) +
Wayne Roberts 0:9c052ff8dd6a 348 ( ( ( SX1272Read( REG_PACKETCONFIG1 ) & ~RF_PACKETCONFIG1_ADDRSFILTERING_MASK ) != 0x00 ) ? 1.0 : 0 ) +
Wayne Roberts 0:9c052ff8dd6a 349 pktLen +
Wayne Roberts 0:9c052ff8dd6a 350 ( ( SX1272.Settings.Fsk.CrcOn == 0x01 ) ? 2.0 : 0 ) ) /
Wayne Roberts 0:9c052ff8dd6a 351 SX1272.Settings.Fsk.Datarate ) * 1e3 );
Wayne Roberts 0:9c052ff8dd6a 352 */
Wayne Roberts 0:9c052ff8dd6a 353 }
Wayne Roberts 0:9c052ff8dd6a 354 break;
Wayne Roberts 0:9c052ff8dd6a 355 case MODEM_LORA:
Wayne Roberts 0:9c052ff8dd6a 356 {
Wayne Roberts 0:9c052ff8dd6a 357 double bw = 0.0;
Wayne Roberts 0:9c052ff8dd6a 358 uint8_t fixLen, bandwidth, LowDatarateOptimize, coderate, crcOn ;
Wayne Roberts 0:9c052ff8dd6a 359 if (radio.type == SX1276) {
Wayne Roberts 0:9c052ff8dd6a 360 coderate = lora.RegModemConfig.sx1276bits.CodingRate;
Wayne Roberts 0:9c052ff8dd6a 361 LowDatarateOptimize = lora.RegModemConfig3.sx1276bits.LowDataRateOptimize;
Wayne Roberts 0:9c052ff8dd6a 362 fixLen = lora.RegModemConfig.sx1276bits.ImplicitHeaderModeOn;
Wayne Roberts 0:9c052ff8dd6a 363 bandwidth = lora.RegModemConfig.sx1276bits.Bw - 7;
Wayne Roberts 0:9c052ff8dd6a 364 crcOn = lora.RegModemConfig2.sx1276bits.RxPayloadCrcOn;
Wayne Roberts 0:9c052ff8dd6a 365 } else if (radio.type == SX1272) {
Wayne Roberts 0:9c052ff8dd6a 366 coderate = lora.RegModemConfig.sx1272bits.CodingRate;
Wayne Roberts 0:9c052ff8dd6a 367 LowDatarateOptimize = lora.RegModemConfig.sx1272bits.LowDataRateOptimize;
Wayne Roberts 0:9c052ff8dd6a 368 fixLen = lora.RegModemConfig.sx1272bits.ImplicitHeaderModeOn;
Wayne Roberts 0:9c052ff8dd6a 369 bandwidth = lora.RegModemConfig.sx1272bits.Bw;
Wayne Roberts 0:9c052ff8dd6a 370 crcOn = lora.RegModemConfig.sx1272bits.RxPayloadCrcOn;
Wayne Roberts 0:9c052ff8dd6a 371 } else
Wayne Roberts 0:9c052ff8dd6a 372 return 0;
Wayne Roberts 0:9c052ff8dd6a 373
Wayne Roberts 0:9c052ff8dd6a 374 switch( bandwidth )
Wayne Roberts 0:9c052ff8dd6a 375 {
Wayne Roberts 0:9c052ff8dd6a 376 case 0: // 125 kHz
Wayne Roberts 0:9c052ff8dd6a 377 bw = 125;//ms: 125e3;
Wayne Roberts 0:9c052ff8dd6a 378 break;
Wayne Roberts 0:9c052ff8dd6a 379 case 1: // 250 kHz
Wayne Roberts 0:9c052ff8dd6a 380 bw = 250;//ms:250e3;
Wayne Roberts 0:9c052ff8dd6a 381 break;
Wayne Roberts 0:9c052ff8dd6a 382 case 2: // 500 kHz
Wayne Roberts 0:9c052ff8dd6a 383 bw = 500;//ms:500e3;
Wayne Roberts 0:9c052ff8dd6a 384 break;
Wayne Roberts 0:9c052ff8dd6a 385 }
Wayne Roberts 0:9c052ff8dd6a 386
Wayne Roberts 0:9c052ff8dd6a 387 // Symbol rate : time for one symbol (secs)
Wayne Roberts 0:9c052ff8dd6a 388 double rs = bw / ( 1 << lora.RegModemConfig2.sx1276bits.SpreadingFactor );
Wayne Roberts 0:9c052ff8dd6a 389 double ts = 1 / rs;
Wayne Roberts 0:9c052ff8dd6a 390 // time of preamble
Wayne Roberts 0:9c052ff8dd6a 391 double tPreamble;
Wayne Roberts 0:9c052ff8dd6a 392 tPreamble = (lora.RegPreamble + 4.25 ) * ts;
Wayne Roberts 0:9c052ff8dd6a 393 // Symbol length of payload and time
Wayne Roberts 0:9c052ff8dd6a 394 double tmp = ceil( ( 8 * pktLen - 4 * lora.RegModemConfig2.sx1276bits.SpreadingFactor +
Wayne Roberts 0:9c052ff8dd6a 395 28 + 16 * crcOn -
Wayne Roberts 0:9c052ff8dd6a 396 ( fixLen ? 20 : 0 ) ) /
Wayne Roberts 0:9c052ff8dd6a 397 ( double )( 4 * ( lora.RegModemConfig2.sx1276bits.SpreadingFactor -
Wayne Roberts 0:9c052ff8dd6a 398 ( ( LowDatarateOptimize > 0 ) ? 2 : 0 ) ) ) ) *
Wayne Roberts 0:9c052ff8dd6a 399 ( coderate + 4 );
Wayne Roberts 0:9c052ff8dd6a 400 double nPayload = 8 + ( ( tmp > 0 ) ? tmp : 0 );
Wayne Roberts 0:9c052ff8dd6a 401 double tPayload = nPayload * ts;
Wayne Roberts 0:9c052ff8dd6a 402 // Time on air
Wayne Roberts 0:9c052ff8dd6a 403 double tOnAir = tPreamble + tPayload;
Wayne Roberts 0:9c052ff8dd6a 404 // return ms secs
Wayne Roberts 0:9c052ff8dd6a 405 airTime = floor( tOnAir * 1e3 + 0.999 );
Wayne Roberts 0:9c052ff8dd6a 406 }
Wayne Roberts 0:9c052ff8dd6a 407 break;
Wayne Roberts 0:9c052ff8dd6a 408 }
Wayne Roberts 0:9c052ff8dd6a 409 return airTime;
Wayne Roberts 0:9c052ff8dd6a 410
Wayne Roberts 0:9c052ff8dd6a 411 }
Wayne Roberts 0:9c052ff8dd6a 412 #endif /* DUTY_ENABLE */
Wayne Roberts 0:9c052ff8dd6a 413
Wayne Roberts 0:9c052ff8dd6a 414 void Radio::service()
Wayne Roberts 0:9c052ff8dd6a 415 {
Wayne Roberts 0:9c052ff8dd6a 416 if (pinEvent.dio0) {
Wayne Roberts 0:9c052ff8dd6a 417 dio0UserContext();
Wayne Roberts 0:9c052ff8dd6a 418 pinEvent.txing = 0;
Wayne Roberts 0:9c052ff8dd6a 419 pinEvent.dio0 = 0;
Wayne Roberts 0:9c052ff8dd6a 420 }
Wayne Roberts 0:9c052ff8dd6a 421
Wayne Roberts 0:9c052ff8dd6a 422 if (pinEvent.dio1) {
Wayne Roberts 0:9c052ff8dd6a 423 dio1UserContext();
Wayne Roberts 0:9c052ff8dd6a 424 pinEvent.dio1 = 0;
Wayne Roberts 0:9c052ff8dd6a 425 }
Wayne Roberts 0:9c052ff8dd6a 426 }
Wayne Roberts 0:9c052ff8dd6a 427
Wayne Roberts 0:9c052ff8dd6a 428 uint32_t Radio::lora_toa_us( uint8_t pktLen )
Wayne Roberts 0:9c052ff8dd6a 429 {
Wayne Roberts 0:9c052ff8dd6a 430 uint32_t airTime = 0;
Wayne Roberts 0:9c052ff8dd6a 431 uint8_t chipBW = Radio::lora.getBw();
Wayne Roberts 0:9c052ff8dd6a 432 double bwKHz;
Wayne Roberts 0:9c052ff8dd6a 433 uint8_t LowDataRateOptimize;
Wayne Roberts 0:9c052ff8dd6a 434 bool FixLen;
Wayne Roberts 0:9c052ff8dd6a 435 uint8_t crcOn;
Wayne Roberts 0:9c052ff8dd6a 436 uint16_t preambleLen = Radio::radio.read_u16(REG_LR_PREAMBLEMSB);
Wayne Roberts 0:9c052ff8dd6a 437
Wayne Roberts 0:9c052ff8dd6a 438 Radio::lora.RegModemConfig2.octet = Radio::radio.read_reg(REG_LR_MODEMCONFIG2);
Wayne Roberts 0:9c052ff8dd6a 439 Radio::lora.RegModemConfig.octet = Radio::radio.read_reg(REG_LR_MODEMCONFIG);
Wayne Roberts 0:9c052ff8dd6a 440
Wayne Roberts 0:9c052ff8dd6a 441 if (Radio::radio.type == SX1276) {
Wayne Roberts 0:9c052ff8dd6a 442 chipBW -= 7;
Wayne Roberts 0:9c052ff8dd6a 443 Radio::lora.RegModemConfig3.octet = Radio::radio.read_reg(REG_LR_MODEMCONFIG3);
Wayne Roberts 0:9c052ff8dd6a 444 LowDataRateOptimize = Radio::lora.RegModemConfig3.sx1276bits.LowDataRateOptimize;
Wayne Roberts 0:9c052ff8dd6a 445 FixLen = Radio::lora.RegModemConfig.sx1276bits.ImplicitHeaderModeOn;
Wayne Roberts 0:9c052ff8dd6a 446 crcOn = Radio::lora.RegModemConfig2.sx1276bits.RxPayloadCrcOn;
Wayne Roberts 0:9c052ff8dd6a 447 } else if (Radio::radio.type == SX1272) {
Wayne Roberts 0:9c052ff8dd6a 448 LowDataRateOptimize = Radio::lora.RegModemConfig.sx1272bits.LowDataRateOptimize;
Wayne Roberts 0:9c052ff8dd6a 449 FixLen = Radio::lora.RegModemConfig.sx1272bits.ImplicitHeaderModeOn;
Wayne Roberts 0:9c052ff8dd6a 450 crcOn = Radio::lora.RegModemConfig.sx1272bits.RxPayloadCrcOn;
Wayne Roberts 0:9c052ff8dd6a 451 } else
Wayne Roberts 0:9c052ff8dd6a 452 return 0;
Wayne Roberts 0:9c052ff8dd6a 453
Wayne Roberts 0:9c052ff8dd6a 454 switch (chipBW) {
Wayne Roberts 0:9c052ff8dd6a 455 case 0: bwKHz = 125; break;
Wayne Roberts 0:9c052ff8dd6a 456 case 1: bwKHz = 250; break;
Wayne Roberts 0:9c052ff8dd6a 457 case 2: bwKHz = 500; break;
Wayne Roberts 0:9c052ff8dd6a 458 default: return 0;
Wayne Roberts 0:9c052ff8dd6a 459 }
Wayne Roberts 0:9c052ff8dd6a 460
Wayne Roberts 0:9c052ff8dd6a 461 // Symbol rate : time for one symbol (secs)
Wayne Roberts 0:9c052ff8dd6a 462 double rs = bwKHz / ( 1 << Radio::lora.RegModemConfig2.sx1276bits.SpreadingFactor );
Wayne Roberts 0:9c052ff8dd6a 463 double ts = 1 / rs;
Wayne Roberts 0:9c052ff8dd6a 464 // time of preamble
Wayne Roberts 0:9c052ff8dd6a 465 double tPreamble = ( preambleLen + 4.25 ) * ts;
Wayne Roberts 0:9c052ff8dd6a 466 // Symbol length of payload and time
Wayne Roberts 0:9c052ff8dd6a 467 double tmp = ceil( ( 8 * pktLen - 4 * Radio::lora.RegModemConfig2.sx1276bits.SpreadingFactor +
Wayne Roberts 0:9c052ff8dd6a 468 28 + 16 * crcOn -
Wayne Roberts 0:9c052ff8dd6a 469 ( FixLen ? 20 : 0 ) ) /
Wayne Roberts 0:9c052ff8dd6a 470 ( double )( 4 * ( Radio::lora.RegModemConfig2.sx1276bits.SpreadingFactor -
Wayne Roberts 0:9c052ff8dd6a 471 ( ( LowDataRateOptimize > 0 ) ? 2 : 0 ) ) ) ) *
Wayne Roberts 0:9c052ff8dd6a 472 ( Radio::lora.getCodingRate(false) + 4 );
Wayne Roberts 0:9c052ff8dd6a 473 double nPayload = 8 + ( ( tmp > 0 ) ? tmp : 0 );
Wayne Roberts 0:9c052ff8dd6a 474 double tPayload = nPayload * ts;
Wayne Roberts 0:9c052ff8dd6a 475 // Time on air
Wayne Roberts 0:9c052ff8dd6a 476 double tOnAir = tPreamble + tPayload;
Wayne Roberts 0:9c052ff8dd6a 477 // return microseconds
Wayne Roberts 0:9c052ff8dd6a 478 airTime = floor( tOnAir * 1000 + 0.999 );
Wayne Roberts 0:9c052ff8dd6a 479
Wayne Roberts 0:9c052ff8dd6a 480 return airTime;
Wayne Roberts 0:9c052ff8dd6a 481 }
Wayne Roberts 0:9c052ff8dd6a 482 #endif /* ..SX127x_H */
Wayne Roberts 0:9c052ff8dd6a 483