Ilya Krylov / sx12xx_hal123

1

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