Amir Chaudhary / SX1276Lib

Hexmodal SX1276lib

Dependents:   LoRaWAN-hello-world_Class_C_Anish

sx1276/sx1276.cpp@4:f0ce52e94d3f, 2014-08-20 (annotated)

Committer:
GregCr
Date:
Wed Aug 20 06:29:01 2014 +0000
Revision:
4:f0ce52e94d3f
Parent:
0:e6ceb13d2d05
Child:
5:11ec8a6ba4f0
Removed use of LED1 which is causing issues with the SPI on the Nucleo board. Clean up

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GregCr 0:e6ceb13d2d05 1 /*
GregCr 0:e6ceb13d2d05 2 / _____) _ | |
GregCr 0:e6ceb13d2d05 3 ( (____ _____ ____ _| |_ _____ ____| |__
GregCr 0:e6ceb13d2d05 4 \____ \| ___ | (_ _) ___ |/ ___) _ \
GregCr 0:e6ceb13d2d05 5 _____) ) ____| | | || |_| ____( (___| | | |
GregCr 0:e6ceb13d2d05 6 (______/|_____)_|_|_| \__)_____)\____)_| |_|
GregCr 0:e6ceb13d2d05 7 ( C )2014 Semtech
GregCr 0:e6ceb13d2d05 8
GregCr 0:e6ceb13d2d05 9 Description: Actual implementation of a SX1276 radio, inherits Radio
GregCr 0:e6ceb13d2d05 10
GregCr 0:e6ceb13d2d05 11 License: Revised BSD License, see LICENSE.TXT file include in the project
GregCr 0:e6ceb13d2d05 12
GregCr 0:e6ceb13d2d05 13 Maintainers: Miguel Luis, Gregory Cristian and Nicolas Huguenin
GregCr 0:e6ceb13d2d05 14 */
GregCr 0:e6ceb13d2d05 15 #include "sx1276.h"
GregCr 0:e6ceb13d2d05 16
GregCr 0:e6ceb13d2d05 17 const FskBandwidth_t SX1276::FskBandwidths[] =
GregCr 0:e6ceb13d2d05 18 {
GregCr 0:e6ceb13d2d05 19 { 2600 , 0x17 },
GregCr 0:e6ceb13d2d05 20 { 3100 , 0x0F },
GregCr 0:e6ceb13d2d05 21 { 3900 , 0x07 },
GregCr 0:e6ceb13d2d05 22 { 5200 , 0x16 },
GregCr 0:e6ceb13d2d05 23 { 6300 , 0x0E },
GregCr 0:e6ceb13d2d05 24 { 7800 , 0x06 },
GregCr 0:e6ceb13d2d05 25 { 10400 , 0x15 },
GregCr 0:e6ceb13d2d05 26 { 12500 , 0x0D },
GregCr 0:e6ceb13d2d05 27 { 15600 , 0x05 },
GregCr 0:e6ceb13d2d05 28 { 20800 , 0x14 },
GregCr 0:e6ceb13d2d05 29 { 25000 , 0x0C },
GregCr 0:e6ceb13d2d05 30 { 31300 , 0x04 },
GregCr 0:e6ceb13d2d05 31 { 41700 , 0x13 },
GregCr 0:e6ceb13d2d05 32 { 50000 , 0x0B },
GregCr 0:e6ceb13d2d05 33 { 62500 , 0x03 },
GregCr 0:e6ceb13d2d05 34 { 83333 , 0x12 },
GregCr 0:e6ceb13d2d05 35 { 100000, 0x0A },
GregCr 0:e6ceb13d2d05 36 { 125000, 0x02 },
GregCr 0:e6ceb13d2d05 37 { 166700, 0x11 },
GregCr 0:e6ceb13d2d05 38 { 200000, 0x09 },
GregCr 0:e6ceb13d2d05 39 { 250000, 0x01 }
GregCr 0:e6ceb13d2d05 40 };
GregCr 0:e6ceb13d2d05 41
GregCr 0:e6ceb13d2d05 42
GregCr 0:e6ceb13d2d05 43 SX1276::SX1276( void ( *txDone )( ), void ( *txTimeout ) ( ), void ( *rxDone ) ( uint8_t *payload, uint16_t size, int8_t rssi, int8_t snr ), void ( *rxTimeout ) ( ), void ( *rxError ) ( ),
GregCr 0:e6ceb13d2d05 44 PinName mosi, PinName miso, PinName sclk, PinName nss, PinName reset,
GregCr 0:e6ceb13d2d05 45 PinName dio0, PinName dio1, PinName dio2, PinName dio3, PinName dio4, PinName dio5 )
GregCr 0:e6ceb13d2d05 46 : Radio( txDone, txTimeout, rxDone, rxTimeout, rxError ),
GregCr 0:e6ceb13d2d05 47 spi( mosi, miso, sclk ),
GregCr 0:e6ceb13d2d05 48 nss( nss ),
GregCr 0:e6ceb13d2d05 49 reset( reset ),
GregCr 0:e6ceb13d2d05 50 dio0( dio0 ), dio1( dio1 ), dio2( dio2 ), dio3( dio3 ), dio4( dio4 ), dio5( dio5 ),
GregCr 0:e6ceb13d2d05 51 isRadioActive( false )
GregCr 0:e6ceb13d2d05 52 {
GregCr 0:e6ceb13d2d05 53 wait_ms( 10 );
GregCr 0:e6ceb13d2d05 54 this->rxTx = 0;
GregCr 0:e6ceb13d2d05 55 this->rxBuffer = new uint8_t[RX_BUFFER_SIZE];
GregCr 0:e6ceb13d2d05 56 previousOpMode = RF_OPMODE_STANDBY;
GregCr 0:e6ceb13d2d05 57
GregCr 0:e6ceb13d2d05 58 this->dioIrq = new DioIrqHandler[6];
GregCr 0:e6ceb13d2d05 59
GregCr 0:e6ceb13d2d05 60 this->dioIrq[0] = &SX1276::OnDio0Irq;
GregCr 0:e6ceb13d2d05 61 this->dioIrq[1] = &SX1276::OnDio1Irq;
GregCr 0:e6ceb13d2d05 62 this->dioIrq[2] = &SX1276::OnDio2Irq;
GregCr 0:e6ceb13d2d05 63 this->dioIrq[3] = &SX1276::OnDio3Irq;
GregCr 0:e6ceb13d2d05 64 this->dioIrq[4] = &SX1276::OnDio4Irq;
GregCr 0:e6ceb13d2d05 65 this->dioIrq[5] = NULL;
GregCr 4:f0ce52e94d3f 66
GregCr 4:f0ce52e94d3f 67 this->settings.State = IDLE;
GregCr 0:e6ceb13d2d05 68 }
GregCr 0:e6ceb13d2d05 69
GregCr 0:e6ceb13d2d05 70 SX1276::~SX1276( )
GregCr 0:e6ceb13d2d05 71 {
GregCr 0:e6ceb13d2d05 72 delete this->rxBuffer;
GregCr 0:e6ceb13d2d05 73 delete this->dioIrq;
GregCr 0:e6ceb13d2d05 74 }
GregCr 0:e6ceb13d2d05 75
GregCr 0:e6ceb13d2d05 76 void SX1276::RxChainCalibration( void )
GregCr 0:e6ceb13d2d05 77 {
GregCr 0:e6ceb13d2d05 78 uint8_t regPaConfigInitVal;
GregCr 0:e6ceb13d2d05 79 uint32_t initialFreq;
GregCr 0:e6ceb13d2d05 80
GregCr 0:e6ceb13d2d05 81 // Save context
GregCr 0:e6ceb13d2d05 82 regPaConfigInitVal = this->Read( REG_PACONFIG );
GregCr 0:e6ceb13d2d05 83 initialFreq = ( double )( ( ( uint32_t )this->Read( REG_FRFMSB ) << 16 ) |
GregCr 0:e6ceb13d2d05 84 ( ( uint32_t )this->Read( REG_FRFMID ) << 8 ) |
GregCr 0:e6ceb13d2d05 85 ( ( uint32_t )this->Read( REG_FRFLSB ) ) ) * ( double )FREQ_STEP;
GregCr 0:e6ceb13d2d05 86
GregCr 0:e6ceb13d2d05 87 // Cut the PA just in case, RFO output, power = -1 dBm
GregCr 0:e6ceb13d2d05 88 this->Write( REG_PACONFIG, 0x00 );
GregCr 0:e6ceb13d2d05 89
GregCr 0:e6ceb13d2d05 90 // Launch Rx chain calibration for LF band
GregCr 0:e6ceb13d2d05 91 Write ( REG_IMAGECAL, ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_MASK ) | RF_IMAGECAL_IMAGECAL_START );
GregCr 0:e6ceb13d2d05 92 while( ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_RUNNING ) == RF_IMAGECAL_IMAGECAL_RUNNING )
GregCr 0:e6ceb13d2d05 93 {
GregCr 0:e6ceb13d2d05 94 }
GregCr 0:e6ceb13d2d05 95
GregCr 0:e6ceb13d2d05 96 // Sets a Frequency in HF band
GregCr 0:e6ceb13d2d05 97 settings.Channel= 868000000 ;
GregCr 0:e6ceb13d2d05 98
GregCr 0:e6ceb13d2d05 99 // Launch Rx chain calibration for HF band
GregCr 0:e6ceb13d2d05 100 Write ( REG_IMAGECAL, ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_MASK ) | RF_IMAGECAL_IMAGECAL_START );
GregCr 0:e6ceb13d2d05 101 while( ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_RUNNING ) == RF_IMAGECAL_IMAGECAL_RUNNING )
GregCr 0:e6ceb13d2d05 102 {
GregCr 0:e6ceb13d2d05 103 }
GregCr 0:e6ceb13d2d05 104
GregCr 0:e6ceb13d2d05 105 // Restore context
GregCr 0:e6ceb13d2d05 106 this->Write( REG_PACONFIG, regPaConfigInitVal );
GregCr 0:e6ceb13d2d05 107 SetChannel( initialFreq );
GregCr 0:e6ceb13d2d05 108 }
GregCr 0:e6ceb13d2d05 109
GregCr 0:e6ceb13d2d05 110 RadioState SX1276::GetState( void )
GregCr 0:e6ceb13d2d05 111 {
GregCr 0:e6ceb13d2d05 112 return this->settings.State;
GregCr 0:e6ceb13d2d05 113 }
GregCr 0:e6ceb13d2d05 114
GregCr 0:e6ceb13d2d05 115 void SX1276::SetChannel( uint32_t freq )
GregCr 0:e6ceb13d2d05 116 {
GregCr 0:e6ceb13d2d05 117 this->settings.Channel = freq;
GregCr 0:e6ceb13d2d05 118 freq = ( uint32_t )( ( double )freq / ( double )FREQ_STEP );
GregCr 0:e6ceb13d2d05 119 Write( REG_FRFMSB, ( uint8_t )( ( freq >> 16 ) & 0xFF ) );
GregCr 0:e6ceb13d2d05 120 Write( REG_FRFMID, ( uint8_t )( ( freq >> 8 ) & 0xFF ) );
GregCr 0:e6ceb13d2d05 121 Write( REG_FRFLSB, ( uint8_t )( freq & 0xFF ) );
GregCr 0:e6ceb13d2d05 122 }
GregCr 0:e6ceb13d2d05 123
GregCr 0:e6ceb13d2d05 124 bool SX1276::IsChannelFree( ModemType modem, uint32_t freq, int8_t rssiThresh )
GregCr 0:e6ceb13d2d05 125 {
GregCr 0:e6ceb13d2d05 126 int8_t rssi = 0;
GregCr 0:e6ceb13d2d05 127
GregCr 0:e6ceb13d2d05 128 SetModem( modem );
GregCr 0:e6ceb13d2d05 129
GregCr 0:e6ceb13d2d05 130 SetChannel( freq );
GregCr 0:e6ceb13d2d05 131
GregCr 0:e6ceb13d2d05 132 SetOpMode( RF_OPMODE_RECEIVER );
GregCr 0:e6ceb13d2d05 133
GregCr 4:f0ce52e94d3f 134 wait_ms( 1 );
GregCr 0:e6ceb13d2d05 135
GregCr 0:e6ceb13d2d05 136 rssi = GetRssi( modem );
GregCr 0:e6ceb13d2d05 137
GregCr 0:e6ceb13d2d05 138 Sleep( );
GregCr 0:e6ceb13d2d05 139
GregCr 0:e6ceb13d2d05 140 if( rssi > rssiThresh )
GregCr 0:e6ceb13d2d05 141 {
GregCr 0:e6ceb13d2d05 142 return false;
GregCr 0:e6ceb13d2d05 143 }
GregCr 0:e6ceb13d2d05 144 return true;
GregCr 0:e6ceb13d2d05 145 }
GregCr 0:e6ceb13d2d05 146
GregCr 0:e6ceb13d2d05 147 uint32_t SX1276::Random( void )
GregCr 0:e6ceb13d2d05 148 {
GregCr 0:e6ceb13d2d05 149 uint8_t i;
GregCr 0:e6ceb13d2d05 150 uint32_t rnd = 0;
GregCr 0:e6ceb13d2d05 151
GregCr 0:e6ceb13d2d05 152 /*
GregCr 0:e6ceb13d2d05 153 * Radio setup for random number generation
GregCr 0:e6ceb13d2d05 154 */
GregCr 0:e6ceb13d2d05 155 // Set LoRa modem ON
GregCr 0:e6ceb13d2d05 156 SetModem( MODEM_LORA );
GregCr 0:e6ceb13d2d05 157
GregCr 0:e6ceb13d2d05 158 // Disable LoRa modem interrupts
GregCr 0:e6ceb13d2d05 159 Write( REG_LR_IRQFLAGSMASK, RFLR_IRQFLAGS_RXTIMEOUT |
GregCr 0:e6ceb13d2d05 160 RFLR_IRQFLAGS_RXDONE |
GregCr 0:e6ceb13d2d05 161 RFLR_IRQFLAGS_PAYLOADCRCERROR |
GregCr 0:e6ceb13d2d05 162 RFLR_IRQFLAGS_VALIDHEADER |
GregCr 0:e6ceb13d2d05 163 RFLR_IRQFLAGS_TXDONE |
GregCr 0:e6ceb13d2d05 164 RFLR_IRQFLAGS_CADDONE |
GregCr 0:e6ceb13d2d05 165 RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
GregCr 0:e6ceb13d2d05 166 RFLR_IRQFLAGS_CADDETECTED );
GregCr 0:e6ceb13d2d05 167
GregCr 0:e6ceb13d2d05 168 // Set radio in continuous reception
GregCr 0:e6ceb13d2d05 169 SetOpMode( RF_OPMODE_RECEIVER );
GregCr 0:e6ceb13d2d05 170
GregCr 0:e6ceb13d2d05 171 for( i = 0; i < 32; i++ )
GregCr 0:e6ceb13d2d05 172 {
GregCr 4:f0ce52e94d3f 173 wait_ms( 1 );
GregCr 0:e6ceb13d2d05 174 // Unfiltered RSSI value reading. Only takes the LSB value
GregCr 0:e6ceb13d2d05 175 rnd |= ( ( uint32_t )Read( REG_LR_RSSIWIDEBAND ) & 0x01 ) << i;
GregCr 0:e6ceb13d2d05 176 }
GregCr 0:e6ceb13d2d05 177
GregCr 0:e6ceb13d2d05 178 Sleep( );
GregCr 0:e6ceb13d2d05 179
GregCr 0:e6ceb13d2d05 180 return rnd;
GregCr 0:e6ceb13d2d05 181 }
GregCr 0:e6ceb13d2d05 182
GregCr 0:e6ceb13d2d05 183 /*!
GregCr 0:e6ceb13d2d05 184 * Returns the known FSK bandwidth registers value
GregCr 0:e6ceb13d2d05 185 *
GregCr 0:e6ceb13d2d05 186 * \param [IN] bandwidth Bandwidth value in Hz
GregCr 0:e6ceb13d2d05 187 * \retval regValue Bandwidth register value.
GregCr 0:e6ceb13d2d05 188 */
GregCr 0:e6ceb13d2d05 189 uint8_t SX1276::GetFskBandwidthRegValue( uint32_t bandwidth )
GregCr 0:e6ceb13d2d05 190 {
GregCr 0:e6ceb13d2d05 191 uint8_t i;
GregCr 0:e6ceb13d2d05 192
GregCr 0:e6ceb13d2d05 193 for( i = 0; i < ( sizeof( FskBandwidths ) / sizeof( FskBandwidth_t ) ) - 1; i++ )
GregCr 0:e6ceb13d2d05 194 {
GregCr 0:e6ceb13d2d05 195 if( ( bandwidth >= FskBandwidths[i].bandwidth ) && ( bandwidth < FskBandwidths[i + 1].bandwidth ) )
GregCr 0:e6ceb13d2d05 196 {
GregCr 0:e6ceb13d2d05 197 return FskBandwidths[i].RegValue;
GregCr 0:e6ceb13d2d05 198 }
GregCr 0:e6ceb13d2d05 199 }
GregCr 0:e6ceb13d2d05 200 // ERROR: Value not found
GregCr 0:e6ceb13d2d05 201 while( 1 );
GregCr 0:e6ceb13d2d05 202 }
GregCr 0:e6ceb13d2d05 203
GregCr 0:e6ceb13d2d05 204 void SX1276::SetRxConfig( ModemType modem, uint32_t bandwidth,
GregCr 0:e6ceb13d2d05 205 uint32_t datarate, uint8_t coderate,
GregCr 0:e6ceb13d2d05 206 uint32_t bandwidthAfc, uint16_t preambleLen,
GregCr 0:e6ceb13d2d05 207 uint16_t symbTimeout, bool fixLen,
GregCr 0:e6ceb13d2d05 208 bool crcOn, bool iqInverted, bool rxContinuous )
GregCr 0:e6ceb13d2d05 209 {
GregCr 0:e6ceb13d2d05 210 SetModem( modem );
GregCr 0:e6ceb13d2d05 211
GregCr 0:e6ceb13d2d05 212 switch( modem )
GregCr 0:e6ceb13d2d05 213 {
GregCr 0:e6ceb13d2d05 214 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 215 {
GregCr 0:e6ceb13d2d05 216 this->settings.Fsk.Bandwidth = bandwidth;
GregCr 0:e6ceb13d2d05 217 this->settings.Fsk.Datarate = datarate;
GregCr 0:e6ceb13d2d05 218 this->settings.Fsk.BandwidthAfc = bandwidthAfc;
GregCr 0:e6ceb13d2d05 219 this->settings.Fsk.FixLen = fixLen;
GregCr 0:e6ceb13d2d05 220 this->settings.Fsk.CrcOn = crcOn;
GregCr 0:e6ceb13d2d05 221 this->settings.Fsk.IqInverted = iqInverted;
GregCr 0:e6ceb13d2d05 222 this->settings.Fsk.RxContinuous = rxContinuous;
GregCr 0:e6ceb13d2d05 223 this->settings.Fsk.PreambleLen = preambleLen;
GregCr 0:e6ceb13d2d05 224
GregCr 0:e6ceb13d2d05 225 datarate = ( uint16_t )( ( double )XTAL_FREQ / ( double )datarate );
GregCr 0:e6ceb13d2d05 226 Write( REG_BITRATEMSB, ( uint8_t )( datarate >> 8 ) );
GregCr 0:e6ceb13d2d05 227 Write( REG_BITRATELSB, ( uint8_t )( datarate & 0xFF ) );
GregCr 0:e6ceb13d2d05 228
GregCr 0:e6ceb13d2d05 229 Write( REG_RXBW, GetFskBandwidthRegValue( bandwidth ) );
GregCr 0:e6ceb13d2d05 230 Write( REG_AFCBW, GetFskBandwidthRegValue( bandwidthAfc ) );
GregCr 0:e6ceb13d2d05 231
GregCr 0:e6ceb13d2d05 232 Write( REG_LR_PREAMBLEMSB, ( uint8_t )( ( preambleLen >> 8 ) & 0xFF ) );
GregCr 0:e6ceb13d2d05 233 Write( REG_LR_PREAMBLELSB, ( uint8_t )( preambleLen & 0xFF ) );
GregCr 0:e6ceb13d2d05 234
GregCr 0:e6ceb13d2d05 235 Write( REG_PACKETCONFIG1,
GregCr 0:e6ceb13d2d05 236 ( Read( REG_PACKETCONFIG1 ) &
GregCr 0:e6ceb13d2d05 237 RF_PACKETCONFIG1_CRC_MASK &
GregCr 0:e6ceb13d2d05 238 RF_PACKETCONFIG1_PACKETFORMAT_MASK ) |
GregCr 0:e6ceb13d2d05 239 ( ( fixLen == 1 ) ? RF_PACKETCONFIG1_PACKETFORMAT_FIXED : RF_PACKETCONFIG1_PACKETFORMAT_VARIABLE ) |
GregCr 0:e6ceb13d2d05 240 ( crcOn << 4 ) );
GregCr 0:e6ceb13d2d05 241 }
GregCr 0:e6ceb13d2d05 242 break;
GregCr 0:e6ceb13d2d05 243 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 244 {
GregCr 0:e6ceb13d2d05 245 if( bandwidth > 2 )
GregCr 0:e6ceb13d2d05 246 {
GregCr 0:e6ceb13d2d05 247 // Fatal error: When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
GregCr 0:e6ceb13d2d05 248 while( 1 );
GregCr 0:e6ceb13d2d05 249 }
GregCr 0:e6ceb13d2d05 250 bandwidth += 7;
GregCr 0:e6ceb13d2d05 251 this->settings.LoRa.Bandwidth = bandwidth;
GregCr 0:e6ceb13d2d05 252 this->settings.LoRa.Datarate = datarate;
GregCr 0:e6ceb13d2d05 253 this->settings.LoRa.Coderate = coderate;
GregCr 0:e6ceb13d2d05 254 this->settings.LoRa.FixLen = fixLen;
GregCr 0:e6ceb13d2d05 255 this->settings.LoRa.CrcOn = crcOn;
GregCr 0:e6ceb13d2d05 256 this->settings.LoRa.IqInverted = iqInverted;
GregCr 0:e6ceb13d2d05 257 this->settings.LoRa.RxContinuous = rxContinuous;
GregCr 0:e6ceb13d2d05 258
GregCr 0:e6ceb13d2d05 259 if( datarate > 12 )
GregCr 0:e6ceb13d2d05 260 {
GregCr 0:e6ceb13d2d05 261 datarate = 12;
GregCr 0:e6ceb13d2d05 262 }
GregCr 0:e6ceb13d2d05 263 else if( datarate < 6 )
GregCr 0:e6ceb13d2d05 264 {
GregCr 0:e6ceb13d2d05 265 datarate = 6;
GregCr 0:e6ceb13d2d05 266 }
GregCr 0:e6ceb13d2d05 267
GregCr 0:e6ceb13d2d05 268 if( ( ( bandwidth == 7 ) && ( ( datarate == 11 ) || ( datarate == 12 ) ) ) ||
GregCr 0:e6ceb13d2d05 269 ( ( bandwidth == 8 ) && ( datarate == 12 ) ) )
GregCr 0:e6ceb13d2d05 270 {
GregCr 0:e6ceb13d2d05 271 this->settings.LoRa.LowDatarateOptimize = 0x01;
GregCr 0:e6ceb13d2d05 272 }
GregCr 0:e6ceb13d2d05 273 else
GregCr 0:e6ceb13d2d05 274 {
GregCr 0:e6ceb13d2d05 275 this->settings.LoRa.LowDatarateOptimize = 0x00;
GregCr 0:e6ceb13d2d05 276 }
GregCr 0:e6ceb13d2d05 277
GregCr 0:e6ceb13d2d05 278 Write( REG_LR_MODEMCONFIG1,
GregCr 0:e6ceb13d2d05 279 ( Read( REG_LR_MODEMCONFIG1 ) &
GregCr 0:e6ceb13d2d05 280 RFLR_MODEMCONFIG1_BW_MASK &
GregCr 0:e6ceb13d2d05 281 RFLR_MODEMCONFIG1_CODINGRATE_MASK &
GregCr 0:e6ceb13d2d05 282 RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
GregCr 0:e6ceb13d2d05 283 ( bandwidth << 4 ) | ( coderate << 1 ) |
GregCr 0:e6ceb13d2d05 284 fixLen );
GregCr 0:e6ceb13d2d05 285
GregCr 0:e6ceb13d2d05 286 Write( REG_LR_MODEMCONFIG2,
GregCr 0:e6ceb13d2d05 287 ( Read( REG_LR_MODEMCONFIG2 ) &
GregCr 0:e6ceb13d2d05 288 RFLR_MODEMCONFIG2_SF_MASK &
GregCr 0:e6ceb13d2d05 289 RFLR_MODEMCONFIG2_RXPAYLOADCRC_MASK &
GregCr 0:e6ceb13d2d05 290 RFLR_MODEMCONFIG2_SYMBTIMEOUTMSB_MASK ) |
GregCr 0:e6ceb13d2d05 291 ( datarate << 4 ) | ( crcOn << 2 ) |
GregCr 0:e6ceb13d2d05 292 ( ( symbTimeout >> 8 ) & ~RFLR_MODEMCONFIG2_SYMBTIMEOUTMSB_MASK ) );
GregCr 0:e6ceb13d2d05 293
GregCr 0:e6ceb13d2d05 294 Write( REG_LR_MODEMCONFIG3,
GregCr 0:e6ceb13d2d05 295 ( Read( REG_LR_MODEMCONFIG3 ) &
GregCr 0:e6ceb13d2d05 296 RFLR_MODEMCONFIG3_LOWDATARATEOPTIMIZE_MASK ) |
GregCr 0:e6ceb13d2d05 297 ( this->settings.LoRa.LowDatarateOptimize << 3 ) );
GregCr 0:e6ceb13d2d05 298
GregCr 0:e6ceb13d2d05 299 Write( REG_LR_SYMBTIMEOUTLSB, ( uint8_t )( symbTimeout & 0xFF ) );
GregCr 0:e6ceb13d2d05 300
GregCr 0:e6ceb13d2d05 301 Write( REG_LR_PREAMBLEMSB, ( uint8_t )( ( preambleLen >> 8 ) & 0xFF ) );
GregCr 0:e6ceb13d2d05 302 Write( REG_LR_PREAMBLELSB, ( uint8_t )( preambleLen & 0xFF ) );
GregCr 0:e6ceb13d2d05 303
GregCr 0:e6ceb13d2d05 304 if( datarate == 6 )
GregCr 0:e6ceb13d2d05 305 {
GregCr 0:e6ceb13d2d05 306 Write( REG_LR_DETECTOPTIMIZE,
GregCr 0:e6ceb13d2d05 307 ( Read( REG_LR_DETECTOPTIMIZE ) &
GregCr 0:e6ceb13d2d05 308 RFLR_DETECTIONOPTIMIZE_MASK ) |
GregCr 0:e6ceb13d2d05 309 RFLR_DETECTIONOPTIMIZE_SF6 );
GregCr 0:e6ceb13d2d05 310 Write( REG_LR_DETECTIONTHRESHOLD,
GregCr 0:e6ceb13d2d05 311 RFLR_DETECTIONTHRESH_SF6 );
GregCr 0:e6ceb13d2d05 312 }
GregCr 0:e6ceb13d2d05 313 else
GregCr 0:e6ceb13d2d05 314 {
GregCr 0:e6ceb13d2d05 315 Write( REG_LR_DETECTOPTIMIZE,
GregCr 0:e6ceb13d2d05 316 ( Read( REG_LR_DETECTOPTIMIZE ) &
GregCr 0:e6ceb13d2d05 317 RFLR_DETECTIONOPTIMIZE_MASK ) |
GregCr 0:e6ceb13d2d05 318 RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
GregCr 0:e6ceb13d2d05 319 Write( REG_LR_DETECTIONTHRESHOLD,
GregCr 0:e6ceb13d2d05 320 RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
GregCr 0:e6ceb13d2d05 321 }
GregCr 0:e6ceb13d2d05 322 }
GregCr 0:e6ceb13d2d05 323 break;
GregCr 0:e6ceb13d2d05 324 }
GregCr 0:e6ceb13d2d05 325 }
GregCr 0:e6ceb13d2d05 326
GregCr 0:e6ceb13d2d05 327 void SX1276::SetTxConfig( ModemType modem, int8_t power, uint32_t fdev,
GregCr 0:e6ceb13d2d05 328 uint32_t bandwidth, uint32_t datarate,
GregCr 0:e6ceb13d2d05 329 uint8_t coderate, uint16_t preambleLen,
GregCr 0:e6ceb13d2d05 330 bool fixLen, bool crcOn,
GregCr 0:e6ceb13d2d05 331 bool iqInverted, uint32_t timeout )
GregCr 0:e6ceb13d2d05 332 {
GregCr 0:e6ceb13d2d05 333 uint8_t paConfig = 0;
GregCr 0:e6ceb13d2d05 334 uint8_t paDac = 0;
GregCr 0:e6ceb13d2d05 335
GregCr 0:e6ceb13d2d05 336 SetModem( modem );
GregCr 0:e6ceb13d2d05 337
GregCr 0:e6ceb13d2d05 338 paConfig = Read( REG_PACONFIG );
GregCr 0:e6ceb13d2d05 339 paDac = Read( REG_PADAC );
GregCr 0:e6ceb13d2d05 340
GregCr 0:e6ceb13d2d05 341 paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | GetPaSelect( this->settings.Channel );
GregCr 0:e6ceb13d2d05 342 paConfig = ( paConfig & RF_PACONFIG_MAX_POWER_MASK ) | 0x70;
GregCr 0:e6ceb13d2d05 343
GregCr 0:e6ceb13d2d05 344 if( ( paConfig & RF_PACONFIG_PASELECT_PABOOST ) == RF_PACONFIG_PASELECT_PABOOST )
GregCr 0:e6ceb13d2d05 345 {
GregCr 0:e6ceb13d2d05 346 if( power > 17 )
GregCr 0:e6ceb13d2d05 347 {
GregCr 0:e6ceb13d2d05 348 paDac = ( paDac & RF_PADAC_20DBM_MASK ) | RF_PADAC_20DBM_ON;
GregCr 0:e6ceb13d2d05 349 }
GregCr 0:e6ceb13d2d05 350 else
GregCr 0:e6ceb13d2d05 351 {
GregCr 0:e6ceb13d2d05 352 paDac = ( paDac & RF_PADAC_20DBM_MASK ) | RF_PADAC_20DBM_OFF;
GregCr 0:e6ceb13d2d05 353 }
GregCr 0:e6ceb13d2d05 354 if( ( paDac & RF_PADAC_20DBM_ON ) == RF_PADAC_20DBM_ON )
GregCr 0:e6ceb13d2d05 355 {
GregCr 0:e6ceb13d2d05 356 if( power < 5 )
GregCr 0:e6ceb13d2d05 357 {
GregCr 0:e6ceb13d2d05 358 power = 5;
GregCr 0:e6ceb13d2d05 359 }
GregCr 0:e6ceb13d2d05 360 if( power > 20 )
GregCr 0:e6ceb13d2d05 361 {
GregCr 0:e6ceb13d2d05 362 power = 20;
GregCr 0:e6ceb13d2d05 363 }
GregCr 0:e6ceb13d2d05 364 paConfig = ( paConfig & RF_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power - 5 ) & 0x0F );
GregCr 0:e6ceb13d2d05 365 }
GregCr 0:e6ceb13d2d05 366 else
GregCr 0:e6ceb13d2d05 367 {
GregCr 0:e6ceb13d2d05 368 if( power < 2 )
GregCr 0:e6ceb13d2d05 369 {
GregCr 0:e6ceb13d2d05 370 power = 2;
GregCr 0:e6ceb13d2d05 371 }
GregCr 0:e6ceb13d2d05 372 if( power > 17 )
GregCr 0:e6ceb13d2d05 373 {
GregCr 0:e6ceb13d2d05 374 power = 17;
GregCr 0:e6ceb13d2d05 375 }
GregCr 0:e6ceb13d2d05 376 paConfig = ( paConfig & RF_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power - 2 ) & 0x0F );
GregCr 0:e6ceb13d2d05 377 }
GregCr 0:e6ceb13d2d05 378 }
GregCr 0:e6ceb13d2d05 379 else
GregCr 0:e6ceb13d2d05 380 {
GregCr 0:e6ceb13d2d05 381 if( power < -1 )
GregCr 0:e6ceb13d2d05 382 {
GregCr 0:e6ceb13d2d05 383 power = -1;
GregCr 0:e6ceb13d2d05 384 }
GregCr 0:e6ceb13d2d05 385 if( power > 14 )
GregCr 0:e6ceb13d2d05 386 {
GregCr 0:e6ceb13d2d05 387 power = 14;
GregCr 0:e6ceb13d2d05 388 }
GregCr 0:e6ceb13d2d05 389 paConfig = ( paConfig & RF_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power + 1 ) & 0x0F );
GregCr 0:e6ceb13d2d05 390 }
GregCr 0:e6ceb13d2d05 391 Write( REG_PACONFIG, paConfig );
GregCr 0:e6ceb13d2d05 392 Write( REG_PADAC, paDac );
GregCr 0:e6ceb13d2d05 393
GregCr 0:e6ceb13d2d05 394 switch( modem )
GregCr 0:e6ceb13d2d05 395 {
GregCr 0:e6ceb13d2d05 396 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 397 {
GregCr 0:e6ceb13d2d05 398 this->settings.Fsk.Power = power;
GregCr 0:e6ceb13d2d05 399 this->settings.Fsk.Fdev = fdev;
GregCr 0:e6ceb13d2d05 400 this->settings.Fsk.Bandwidth = bandwidth;
GregCr 0:e6ceb13d2d05 401 this->settings.Fsk.Datarate = datarate;
GregCr 0:e6ceb13d2d05 402 this->settings.Fsk.PreambleLen = preambleLen;
GregCr 0:e6ceb13d2d05 403 this->settings.Fsk.FixLen = fixLen;
GregCr 0:e6ceb13d2d05 404 this->settings.Fsk.CrcOn = crcOn;
GregCr 0:e6ceb13d2d05 405 this->settings.Fsk.IqInverted = iqInverted;
GregCr 0:e6ceb13d2d05 406 this->settings.Fsk.TxTimeout = timeout;
GregCr 0:e6ceb13d2d05 407
GregCr 0:e6ceb13d2d05 408 fdev = ( uint16_t )( ( double )fdev / ( double )FREQ_STEP );
GregCr 0:e6ceb13d2d05 409 Write( REG_FDEVMSB, ( uint8_t )( fdev >> 8 ) );
GregCr 0:e6ceb13d2d05 410 Write( REG_FDEVLSB, ( uint8_t )( fdev & 0xFF ) );
GregCr 0:e6ceb13d2d05 411
GregCr 0:e6ceb13d2d05 412 datarate = ( uint16_t )( ( double )XTAL_FREQ / ( double )datarate );
GregCr 0:e6ceb13d2d05 413 Write( REG_BITRATEMSB, ( uint8_t )( datarate >> 8 ) );
GregCr 0:e6ceb13d2d05 414 Write( REG_BITRATELSB, ( uint8_t )( datarate & 0xFF ) );
GregCr 0:e6ceb13d2d05 415
GregCr 0:e6ceb13d2d05 416 Write( REG_PREAMBLEMSB, ( preambleLen >> 8 ) & 0x00FF );
GregCr 0:e6ceb13d2d05 417 Write( REG_PREAMBLELSB, preambleLen & 0xFF );
GregCr 0:e6ceb13d2d05 418
GregCr 0:e6ceb13d2d05 419 Write( REG_PACKETCONFIG1,
GregCr 0:e6ceb13d2d05 420 ( Read( REG_PACKETCONFIG1 ) &
GregCr 0:e6ceb13d2d05 421 RF_PACKETCONFIG1_CRC_MASK &
GregCr 0:e6ceb13d2d05 422 RF_PACKETCONFIG1_PACKETFORMAT_MASK ) |
GregCr 0:e6ceb13d2d05 423 ( ( fixLen == 1 ) ? RF_PACKETCONFIG1_PACKETFORMAT_FIXED : RF_PACKETCONFIG1_PACKETFORMAT_VARIABLE ) |
GregCr 0:e6ceb13d2d05 424 ( crcOn << 4 ) );
GregCr 0:e6ceb13d2d05 425
GregCr 0:e6ceb13d2d05 426 }
GregCr 0:e6ceb13d2d05 427 break;
GregCr 0:e6ceb13d2d05 428 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 429 {
GregCr 0:e6ceb13d2d05 430 this->settings.LoRa.Power = power;
GregCr 0:e6ceb13d2d05 431 if( bandwidth > 2 )
GregCr 0:e6ceb13d2d05 432 {
GregCr 0:e6ceb13d2d05 433 // Fatal error: When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
GregCr 0:e6ceb13d2d05 434 while( 1 );
GregCr 0:e6ceb13d2d05 435 }
GregCr 0:e6ceb13d2d05 436 bandwidth += 7;
GregCr 0:e6ceb13d2d05 437 this->settings.LoRa.Bandwidth = bandwidth;
GregCr 0:e6ceb13d2d05 438 this->settings.LoRa.Datarate = datarate;
GregCr 0:e6ceb13d2d05 439 this->settings.LoRa.Coderate = coderate;
GregCr 0:e6ceb13d2d05 440 this->settings.LoRa.PreambleLen = preambleLen;
GregCr 0:e6ceb13d2d05 441 this->settings.LoRa.FixLen = fixLen;
GregCr 0:e6ceb13d2d05 442 this->settings.LoRa.CrcOn = crcOn;
GregCr 0:e6ceb13d2d05 443 this->settings.LoRa.IqInverted = iqInverted;
GregCr 0:e6ceb13d2d05 444 this->settings.LoRa.TxTimeout = timeout;
GregCr 0:e6ceb13d2d05 445
GregCr 0:e6ceb13d2d05 446 if( datarate > 12 )
GregCr 0:e6ceb13d2d05 447 {
GregCr 0:e6ceb13d2d05 448 datarate = 12;
GregCr 0:e6ceb13d2d05 449 }
GregCr 0:e6ceb13d2d05 450 else if( datarate < 6 )
GregCr 0:e6ceb13d2d05 451 {
GregCr 0:e6ceb13d2d05 452 datarate = 6;
GregCr 0:e6ceb13d2d05 453 }
GregCr 0:e6ceb13d2d05 454 if( ( ( bandwidth == 7 ) && ( ( datarate == 11 ) || ( datarate == 12 ) ) ) ||
GregCr 0:e6ceb13d2d05 455 ( ( bandwidth == 8 ) && ( datarate == 12 ) ) )
GregCr 0:e6ceb13d2d05 456 {
GregCr 0:e6ceb13d2d05 457 this->settings.LoRa.LowDatarateOptimize = 0x01;
GregCr 0:e6ceb13d2d05 458 }
GregCr 0:e6ceb13d2d05 459 else
GregCr 0:e6ceb13d2d05 460 {
GregCr 0:e6ceb13d2d05 461 this->settings.LoRa.LowDatarateOptimize = 0x00;
GregCr 0:e6ceb13d2d05 462 }
GregCr 0:e6ceb13d2d05 463
GregCr 0:e6ceb13d2d05 464 Write( REG_LR_MODEMCONFIG1,
GregCr 0:e6ceb13d2d05 465 ( Read( REG_LR_MODEMCONFIG1 ) &
GregCr 0:e6ceb13d2d05 466 RFLR_MODEMCONFIG1_BW_MASK &
GregCr 0:e6ceb13d2d05 467 RFLR_MODEMCONFIG1_CODINGRATE_MASK &
GregCr 0:e6ceb13d2d05 468 RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
GregCr 0:e6ceb13d2d05 469 ( bandwidth << 4 ) | ( coderate << 1 ) |
GregCr 0:e6ceb13d2d05 470 fixLen );
GregCr 0:e6ceb13d2d05 471
GregCr 0:e6ceb13d2d05 472 Write( REG_LR_MODEMCONFIG2,
GregCr 0:e6ceb13d2d05 473 ( Read( REG_LR_MODEMCONFIG2 ) &
GregCr 0:e6ceb13d2d05 474 RFLR_MODEMCONFIG2_SF_MASK &
GregCr 0:e6ceb13d2d05 475 RFLR_MODEMCONFIG2_RXPAYLOADCRC_MASK ) |
GregCr 0:e6ceb13d2d05 476 ( datarate << 4 ) | ( crcOn << 2 ) );
GregCr 0:e6ceb13d2d05 477
GregCr 0:e6ceb13d2d05 478 Write( REG_LR_MODEMCONFIG3,
GregCr 0:e6ceb13d2d05 479 ( Read( REG_LR_MODEMCONFIG3 ) &
GregCr 0:e6ceb13d2d05 480 RFLR_MODEMCONFIG3_LOWDATARATEOPTIMIZE_MASK ) |
GregCr 0:e6ceb13d2d05 481 ( this->settings.LoRa.LowDatarateOptimize << 3 ) );
GregCr 0:e6ceb13d2d05 482
GregCr 0:e6ceb13d2d05 483 Write( REG_LR_PREAMBLEMSB, ( preambleLen >> 8 ) & 0x00FF );
GregCr 0:e6ceb13d2d05 484 Write( REG_LR_PREAMBLELSB, preambleLen & 0xFF );
GregCr 0:e6ceb13d2d05 485
GregCr 0:e6ceb13d2d05 486 if( datarate == 6 )
GregCr 0:e6ceb13d2d05 487 {
GregCr 0:e6ceb13d2d05 488 Write( REG_LR_DETECTOPTIMIZE,
GregCr 0:e6ceb13d2d05 489 ( Read( REG_LR_DETECTOPTIMIZE ) &
GregCr 0:e6ceb13d2d05 490 RFLR_DETECTIONOPTIMIZE_MASK ) |
GregCr 0:e6ceb13d2d05 491 RFLR_DETECTIONOPTIMIZE_SF6 );
GregCr 0:e6ceb13d2d05 492 Write( REG_LR_DETECTIONTHRESHOLD,
GregCr 0:e6ceb13d2d05 493 RFLR_DETECTIONTHRESH_SF6 );
GregCr 0:e6ceb13d2d05 494 }
GregCr 0:e6ceb13d2d05 495 else
GregCr 0:e6ceb13d2d05 496 {
GregCr 0:e6ceb13d2d05 497 Write( REG_LR_DETECTOPTIMIZE,
GregCr 0:e6ceb13d2d05 498 ( Read( REG_LR_DETECTOPTIMIZE ) &
GregCr 0:e6ceb13d2d05 499 RFLR_DETECTIONOPTIMIZE_MASK ) |
GregCr 0:e6ceb13d2d05 500 RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
GregCr 0:e6ceb13d2d05 501 Write( REG_LR_DETECTIONTHRESHOLD,
GregCr 0:e6ceb13d2d05 502 RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
GregCr 0:e6ceb13d2d05 503 }
GregCr 0:e6ceb13d2d05 504 }
GregCr 0:e6ceb13d2d05 505 break;
GregCr 0:e6ceb13d2d05 506 }
GregCr 0:e6ceb13d2d05 507 }
GregCr 0:e6ceb13d2d05 508
GregCr 0:e6ceb13d2d05 509 double SX1276::TimeOnAir( ModemType modem, uint8_t pktLen )
GregCr 0:e6ceb13d2d05 510 {
GregCr 0:e6ceb13d2d05 511 double airTime = 0.0;
GregCr 0:e6ceb13d2d05 512
GregCr 0:e6ceb13d2d05 513 switch( modem )
GregCr 0:e6ceb13d2d05 514 {
GregCr 0:e6ceb13d2d05 515 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 516 {
GregCr 4:f0ce52e94d3f 517 airTime = ceil( ( 8 * ( this->settings.Fsk.PreambleLen +
GregCr 0:e6ceb13d2d05 518 ( ( Read( REG_SYNCCONFIG ) & ~RF_SYNCCONFIG_SYNCSIZE_MASK ) + 1 ) +
GregCr 0:e6ceb13d2d05 519 ( ( this->settings.Fsk.FixLen == 0x01 ) ? 0.0 : 1.0 ) +
GregCr 0:e6ceb13d2d05 520 ( ( ( Read( REG_PACKETCONFIG1 ) & ~RF_PACKETCONFIG1_ADDRSFILTERING_MASK ) != 0x00 ) ? 1.0 : 0 ) +
GregCr 0:e6ceb13d2d05 521 pktLen +
GregCr 0:e6ceb13d2d05 522 ( ( this->settings.Fsk.CrcOn == 0x01 ) ? 2.0 : 0 ) ) /
GregCr 0:e6ceb13d2d05 523 this->settings.Fsk.Datarate ) * 1e6 );
GregCr 0:e6ceb13d2d05 524 }
GregCr 0:e6ceb13d2d05 525 break;
GregCr 0:e6ceb13d2d05 526 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 527 {
GregCr 0:e6ceb13d2d05 528 double bw = 0.0;
GregCr 0:e6ceb13d2d05 529 // REMARK: When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
GregCr 0:e6ceb13d2d05 530 switch( this->settings.LoRa.Bandwidth )
GregCr 0:e6ceb13d2d05 531 {
GregCr 0:e6ceb13d2d05 532 //case 0: // 7.8 kHz
GregCr 0:e6ceb13d2d05 533 // bw = 78e2;
GregCr 0:e6ceb13d2d05 534 // break;
GregCr 0:e6ceb13d2d05 535 //case 1: // 10.4 kHz
GregCr 0:e6ceb13d2d05 536 // bw = 104e2;
GregCr 0:e6ceb13d2d05 537 // break;
GregCr 0:e6ceb13d2d05 538 //case 2: // 15.6 kHz
GregCr 0:e6ceb13d2d05 539 // bw = 156e2;
GregCr 0:e6ceb13d2d05 540 // break;
GregCr 0:e6ceb13d2d05 541 //case 3: // 20.8 kHz
GregCr 0:e6ceb13d2d05 542 // bw = 208e2;
GregCr 0:e6ceb13d2d05 543 // break;
GregCr 0:e6ceb13d2d05 544 //case 4: // 31.2 kHz
GregCr 0:e6ceb13d2d05 545 // bw = 312e2;
GregCr 0:e6ceb13d2d05 546 // break;
GregCr 0:e6ceb13d2d05 547 //case 5: // 41.4 kHz
GregCr 0:e6ceb13d2d05 548 // bw = 414e2;
GregCr 0:e6ceb13d2d05 549 // break;
GregCr 0:e6ceb13d2d05 550 //case 6: // 62.5 kHz
GregCr 0:e6ceb13d2d05 551 // bw = 625e2;
GregCr 0:e6ceb13d2d05 552 // break;
GregCr 0:e6ceb13d2d05 553 case 7: // 125 kHz
GregCr 0:e6ceb13d2d05 554 bw = 125e3;
GregCr 0:e6ceb13d2d05 555 break;
GregCr 0:e6ceb13d2d05 556 case 8: // 250 kHz
GregCr 0:e6ceb13d2d05 557 bw = 250e3;
GregCr 0:e6ceb13d2d05 558 break;
GregCr 0:e6ceb13d2d05 559 case 9: // 500 kHz
GregCr 0:e6ceb13d2d05 560 bw = 500e3;
GregCr 0:e6ceb13d2d05 561 break;
GregCr 0:e6ceb13d2d05 562 }
GregCr 0:e6ceb13d2d05 563
GregCr 0:e6ceb13d2d05 564 // Symbol rate : time for one symbol (secs)
GregCr 0:e6ceb13d2d05 565 double rs = bw / ( 1 << this->settings.LoRa.Datarate );
GregCr 0:e6ceb13d2d05 566 double ts = 1 / rs;
GregCr 0:e6ceb13d2d05 567 // time of preamble
GregCr 0:e6ceb13d2d05 568 double tPreamble = ( this->settings.LoRa.PreambleLen + 4.25 ) * ts;
GregCr 0:e6ceb13d2d05 569 // Symbol length of payload and time
GregCr 0:e6ceb13d2d05 570 double tmp = ceil( ( 8 * pktLen - 4 * this->settings.LoRa.Datarate +
GregCr 0:e6ceb13d2d05 571 28 + 16 * this->settings.LoRa.CrcOn -
GregCr 0:e6ceb13d2d05 572 ( this->settings.LoRa.FixLen ? 20 : 0 ) ) /
GregCr 0:e6ceb13d2d05 573 ( double )( 4 * this->settings.LoRa.Datarate -
GregCr 0:e6ceb13d2d05 574 ( ( this->settings.LoRa.LowDatarateOptimize > 0 ) ? 8 : 0 ) ) ) *
GregCr 0:e6ceb13d2d05 575 ( this->settings.LoRa.Coderate + 4 );
GregCr 0:e6ceb13d2d05 576 double nPayload = 8 + ( ( tmp > 0 ) ? tmp : 0 );
GregCr 0:e6ceb13d2d05 577 double tPayload = nPayload * ts;
GregCr 0:e6ceb13d2d05 578 // Time on air
GregCr 0:e6ceb13d2d05 579 double tOnAir = tPreamble + tPayload;
GregCr 0:e6ceb13d2d05 580 // return us secs
GregCr 0:e6ceb13d2d05 581 airTime = floor( tOnAir * 1e6 + 0.999 );
GregCr 0:e6ceb13d2d05 582 }
GregCr 0:e6ceb13d2d05 583 break;
GregCr 0:e6ceb13d2d05 584 }
GregCr 0:e6ceb13d2d05 585 return airTime;
GregCr 0:e6ceb13d2d05 586 }
GregCr 0:e6ceb13d2d05 587
GregCr 0:e6ceb13d2d05 588 void SX1276::Send( uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 589 {
GregCr 0:e6ceb13d2d05 590 uint32_t txTimeout = 0;
GregCr 0:e6ceb13d2d05 591
GregCr 0:e6ceb13d2d05 592 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 593 {
GregCr 0:e6ceb13d2d05 594 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 595 {
GregCr 0:e6ceb13d2d05 596 this->settings.FskPacketHandler.NbBytes = 0;
GregCr 0:e6ceb13d2d05 597 this->settings.FskPacketHandler.Size = size;
GregCr 0:e6ceb13d2d05 598
GregCr 0:e6ceb13d2d05 599 if( this->settings.Fsk.FixLen == false )
GregCr 0:e6ceb13d2d05 600 {
GregCr 0:e6ceb13d2d05 601 WriteFifo( ( uint8_t* )&size, 1 );
GregCr 0:e6ceb13d2d05 602 }
GregCr 0:e6ceb13d2d05 603 else
GregCr 0:e6ceb13d2d05 604 {
GregCr 0:e6ceb13d2d05 605 Write( REG_PAYLOADLENGTH, size );
GregCr 0:e6ceb13d2d05 606 }
GregCr 0:e6ceb13d2d05 607
GregCr 0:e6ceb13d2d05 608 if( ( size > 0 ) && ( size <= 64 ) )
GregCr 0:e6ceb13d2d05 609 {
GregCr 0:e6ceb13d2d05 610 this->settings.FskPacketHandler.ChunkSize = size;
GregCr 0:e6ceb13d2d05 611 }
GregCr 0:e6ceb13d2d05 612 else
GregCr 0:e6ceb13d2d05 613 {
GregCr 0:e6ceb13d2d05 614 this->settings.FskPacketHandler.ChunkSize = 32;
GregCr 0:e6ceb13d2d05 615 }
GregCr 0:e6ceb13d2d05 616
GregCr 0:e6ceb13d2d05 617 // Write payload buffer
GregCr 0:e6ceb13d2d05 618 WriteFifo( buffer, this->settings.FskPacketHandler.ChunkSize );
GregCr 0:e6ceb13d2d05 619 this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.ChunkSize;
GregCr 0:e6ceb13d2d05 620 txTimeout = this->settings.Fsk.TxTimeout;
GregCr 0:e6ceb13d2d05 621 }
GregCr 0:e6ceb13d2d05 622 break;
GregCr 0:e6ceb13d2d05 623 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 624 {
GregCr 0:e6ceb13d2d05 625 if( this->settings.LoRa.IqInverted == true )
GregCr 0:e6ceb13d2d05 626 {
GregCr 0:e6ceb13d2d05 627 Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_ON ) );
GregCr 0:e6ceb13d2d05 628 }
GregCr 0:e6ceb13d2d05 629 else
GregCr 0:e6ceb13d2d05 630 {
GregCr 0:e6ceb13d2d05 631 Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_OFF ) );
GregCr 0:e6ceb13d2d05 632 }
GregCr 0:e6ceb13d2d05 633
GregCr 0:e6ceb13d2d05 634 this->settings.LoRaPacketHandler.Size = size;
GregCr 0:e6ceb13d2d05 635
GregCr 0:e6ceb13d2d05 636 // Initializes the payload size
GregCr 0:e6ceb13d2d05 637 Write( REG_LR_PAYLOADLENGTH, size );
GregCr 0:e6ceb13d2d05 638
GregCr 0:e6ceb13d2d05 639 // Full buffer used for Tx
GregCr 0:e6ceb13d2d05 640 Write( REG_LR_FIFOTXBASEADDR, 0 );
GregCr 0:e6ceb13d2d05 641 Write( REG_LR_FIFOADDRPTR, 0 );
GregCr 0:e6ceb13d2d05 642
GregCr 0:e6ceb13d2d05 643 // FIFO operations can not take place in Sleep mode
GregCr 0:e6ceb13d2d05 644 if( ( Read( REG_OPMODE ) & ~RF_OPMODE_MASK ) == RF_OPMODE_SLEEP )
GregCr 0:e6ceb13d2d05 645 {
GregCr 0:e6ceb13d2d05 646 Standby( );
GregCr 4:f0ce52e94d3f 647 wait_ms( 1 );
GregCr 0:e6ceb13d2d05 648 }
GregCr 0:e6ceb13d2d05 649 // Write payload buffer
GregCr 0:e6ceb13d2d05 650 WriteFifo( buffer, size );
GregCr 0:e6ceb13d2d05 651 txTimeout = this->settings.LoRa.TxTimeout;
GregCr 0:e6ceb13d2d05 652 }
GregCr 0:e6ceb13d2d05 653 break;
GregCr 0:e6ceb13d2d05 654 }
GregCr 0:e6ceb13d2d05 655
GregCr 0:e6ceb13d2d05 656 Tx( txTimeout );
GregCr 0:e6ceb13d2d05 657 }
GregCr 0:e6ceb13d2d05 658
GregCr 0:e6ceb13d2d05 659 void SX1276::Sleep( void )
GregCr 0:e6ceb13d2d05 660 {
GregCr 0:e6ceb13d2d05 661 // Initialize driver timeout timers
GregCr 0:e6ceb13d2d05 662 txTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 663 rxTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 664 SetOpMode( RF_OPMODE_SLEEP );
GregCr 0:e6ceb13d2d05 665 }
GregCr 0:e6ceb13d2d05 666
GregCr 0:e6ceb13d2d05 667 void SX1276::Standby( void )
GregCr 0:e6ceb13d2d05 668 {
GregCr 0:e6ceb13d2d05 669 txTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 670 rxTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 671 SetOpMode( RF_OPMODE_STANDBY );
GregCr 0:e6ceb13d2d05 672 }
GregCr 0:e6ceb13d2d05 673
GregCr 0:e6ceb13d2d05 674 void SX1276::Rx( uint32_t timeout )
GregCr 0:e6ceb13d2d05 675 {
GregCr 0:e6ceb13d2d05 676 bool rxContinuous = false;
GregCr 0:e6ceb13d2d05 677
GregCr 0:e6ceb13d2d05 678 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 679 {
GregCr 0:e6ceb13d2d05 680 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 681 {
GregCr 0:e6ceb13d2d05 682 rxContinuous = this->settings.Fsk.RxContinuous;
GregCr 0:e6ceb13d2d05 683
GregCr 0:e6ceb13d2d05 684 // DIO0=PayloadReady
GregCr 0:e6ceb13d2d05 685 // DIO1=FifoLevel
GregCr 0:e6ceb13d2d05 686 // DIO2=SyncAddr
GregCr 0:e6ceb13d2d05 687 // DIO3=FifoEmpty
GregCr 0:e6ceb13d2d05 688 // DIO4=Preamble
GregCr 0:e6ceb13d2d05 689 // DIO5=ModeReady
GregCr 0:e6ceb13d2d05 690 Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RF_DIOMAPPING1_DIO0_MASK &
GregCr 0:e6ceb13d2d05 691 RF_DIOMAPPING1_DIO2_MASK ) |
GregCr 0:e6ceb13d2d05 692 RF_DIOMAPPING1_DIO0_00 |
GregCr 0:e6ceb13d2d05 693 RF_DIOMAPPING1_DIO2_11 );
GregCr 0:e6ceb13d2d05 694
GregCr 0:e6ceb13d2d05 695 Write( REG_DIOMAPPING2, ( Read( REG_DIOMAPPING2 ) & RF_DIOMAPPING2_DIO4_MASK &
GregCr 0:e6ceb13d2d05 696 RF_DIOMAPPING2_MAP_MASK ) |
GregCr 0:e6ceb13d2d05 697 RF_DIOMAPPING2_DIO4_11 |
GregCr 0:e6ceb13d2d05 698 RF_DIOMAPPING2_MAP_PREAMBLEDETECT );
GregCr 0:e6ceb13d2d05 699
GregCr 0:e6ceb13d2d05 700 this->settings.FskPacketHandler.FifoThresh = Read( REG_FIFOTHRESH ) & 0x3F;
GregCr 0:e6ceb13d2d05 701
GregCr 0:e6ceb13d2d05 702 this->settings.FskPacketHandler.PreambleDetected = false;
GregCr 0:e6ceb13d2d05 703 this->settings.FskPacketHandler.SyncWordDetected = false;
GregCr 0:e6ceb13d2d05 704 this->settings.FskPacketHandler.NbBytes = 0;
GregCr 0:e6ceb13d2d05 705 this->settings.FskPacketHandler.Size = 0;
GregCr 0:e6ceb13d2d05 706 }
GregCr 0:e6ceb13d2d05 707 break;
GregCr 0:e6ceb13d2d05 708 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 709 {
GregCr 0:e6ceb13d2d05 710 if( this->settings.LoRa.IqInverted == true )
GregCr 0:e6ceb13d2d05 711 {
GregCr 0:e6ceb13d2d05 712 Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_ON | RFLR_INVERTIQ_TX_OFF ) );
GregCr 0:e6ceb13d2d05 713 }
GregCr 0:e6ceb13d2d05 714 else
GregCr 0:e6ceb13d2d05 715 {
GregCr 0:e6ceb13d2d05 716 Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_OFF ) );
GregCr 0:e6ceb13d2d05 717 }
GregCr 0:e6ceb13d2d05 718
GregCr 0:e6ceb13d2d05 719 rxContinuous = this->settings.LoRa.RxContinuous;
GregCr 0:e6ceb13d2d05 720
GregCr 0:e6ceb13d2d05 721 Write( REG_LR_IRQFLAGSMASK, //RFLR_IRQFLAGS_RXTIMEOUT |
GregCr 0:e6ceb13d2d05 722 //RFLR_IRQFLAGS_RXDONE |
GregCr 0:e6ceb13d2d05 723 //RFLR_IRQFLAGS_PAYLOADCRCERROR |
GregCr 4:f0ce52e94d3f 724 RFLR_IRQFLAGS_VALIDHEADER |
GregCr 0:e6ceb13d2d05 725 RFLR_IRQFLAGS_TXDONE |
GregCr 0:e6ceb13d2d05 726 RFLR_IRQFLAGS_CADDONE |
GregCr 0:e6ceb13d2d05 727 RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
GregCr 0:e6ceb13d2d05 728 RFLR_IRQFLAGS_CADDETECTED );
GregCr 0:e6ceb13d2d05 729
GregCr 0:e6ceb13d2d05 730 // DIO0=RxDone
GregCr 0:e6ceb13d2d05 731 Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_00 );
GregCr 0:e6ceb13d2d05 732 Write( REG_LR_FIFORXBASEADDR, 0 );
GregCr 0:e6ceb13d2d05 733 Write( REG_LR_FIFOADDRPTR, 0 );
GregCr 0:e6ceb13d2d05 734 }
GregCr 0:e6ceb13d2d05 735 break;
GregCr 0:e6ceb13d2d05 736 }
GregCr 0:e6ceb13d2d05 737
GregCr 0:e6ceb13d2d05 738 memset( rxBuffer, 0, ( size_t )RX_BUFFER_SIZE );
GregCr 0:e6ceb13d2d05 739
GregCr 0:e6ceb13d2d05 740 this->settings.State = RX;
GregCr 0:e6ceb13d2d05 741 if( timeout != 0 )
GregCr 0:e6ceb13d2d05 742 {
GregCr 0:e6ceb13d2d05 743 rxTimeoutTimer.attach_us( this, &SX1276::OnTimeoutIrq, timeout );
GregCr 0:e6ceb13d2d05 744 }
GregCr 0:e6ceb13d2d05 745
GregCr 0:e6ceb13d2d05 746 if( this->settings.Modem == MODEM_FSK )
GregCr 0:e6ceb13d2d05 747 {
GregCr 0:e6ceb13d2d05 748 SetOpMode( RF_OPMODE_RECEIVER );
GregCr 0:e6ceb13d2d05 749
GregCr 0:e6ceb13d2d05 750 if( rxContinuous == false )
GregCr 0:e6ceb13d2d05 751 {
GregCr 0:e6ceb13d2d05 752 rxTimeoutSyncWord.attach_us( this, &SX1276::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
GregCr 0:e6ceb13d2d05 753 ( ( Read( REG_SYNCCONFIG ) &
GregCr 0:e6ceb13d2d05 754 ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
GregCr 0:e6ceb13d2d05 755 1.0 ) + 1.0 ) /
GregCr 0:e6ceb13d2d05 756 ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
GregCr 0:e6ceb13d2d05 757 }
GregCr 0:e6ceb13d2d05 758 }
GregCr 0:e6ceb13d2d05 759 else
GregCr 0:e6ceb13d2d05 760 {
GregCr 0:e6ceb13d2d05 761 if( rxContinuous == true )
GregCr 0:e6ceb13d2d05 762 {
GregCr 0:e6ceb13d2d05 763 SetOpMode( RFLR_OPMODE_RECEIVER );
GregCr 0:e6ceb13d2d05 764 }
GregCr 0:e6ceb13d2d05 765 else
GregCr 0:e6ceb13d2d05 766 {
GregCr 0:e6ceb13d2d05 767 SetOpMode( RFLR_OPMODE_RECEIVER_SINGLE );
GregCr 0:e6ceb13d2d05 768 }
GregCr 0:e6ceb13d2d05 769 }
GregCr 0:e6ceb13d2d05 770 }
GregCr 0:e6ceb13d2d05 771
GregCr 0:e6ceb13d2d05 772 void SX1276::Tx( uint32_t timeout )
GregCr 0:e6ceb13d2d05 773 {
GregCr 0:e6ceb13d2d05 774 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 775 {
GregCr 0:e6ceb13d2d05 776 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 777 {
GregCr 0:e6ceb13d2d05 778 // DIO0=PacketSent
GregCr 0:e6ceb13d2d05 779 // DIO1=FifoLevel
GregCr 0:e6ceb13d2d05 780 // DIO2=FifoFull
GregCr 0:e6ceb13d2d05 781 // DIO3=FifoEmpty
GregCr 0:e6ceb13d2d05 782 // DIO4=LowBat
GregCr 0:e6ceb13d2d05 783 // DIO5=ModeReady
GregCr 0:e6ceb13d2d05 784 Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RF_DIOMAPPING1_DIO0_MASK &
GregCr 0:e6ceb13d2d05 785 RF_DIOMAPPING1_DIO2_MASK ) );
GregCr 0:e6ceb13d2d05 786
GregCr 0:e6ceb13d2d05 787 Write( REG_DIOMAPPING2, ( Read( REG_DIOMAPPING2 ) & RF_DIOMAPPING2_DIO4_MASK &
GregCr 0:e6ceb13d2d05 788 RF_DIOMAPPING2_MAP_MASK ) );
GregCr 0:e6ceb13d2d05 789 this->settings.FskPacketHandler.FifoThresh = Read( REG_FIFOTHRESH ) & 0x3F;
GregCr 0:e6ceb13d2d05 790 }
GregCr 0:e6ceb13d2d05 791 break;
GregCr 0:e6ceb13d2d05 792 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 793 {
GregCr 0:e6ceb13d2d05 794 Write( REG_LR_IRQFLAGSMASK, RFLR_IRQFLAGS_RXTIMEOUT |
GregCr 0:e6ceb13d2d05 795 RFLR_IRQFLAGS_RXDONE |
GregCr 0:e6ceb13d2d05 796 RFLR_IRQFLAGS_PAYLOADCRCERROR |
GregCr 0:e6ceb13d2d05 797 RFLR_IRQFLAGS_VALIDHEADER |
GregCr 0:e6ceb13d2d05 798 //RFLR_IRQFLAGS_TXDONE |
GregCr 0:e6ceb13d2d05 799 RFLR_IRQFLAGS_CADDONE |
GregCr 0:e6ceb13d2d05 800 RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
GregCr 0:e6ceb13d2d05 801 RFLR_IRQFLAGS_CADDETECTED );
GregCr 0:e6ceb13d2d05 802
GregCr 0:e6ceb13d2d05 803 // DIO0=TxDone
GregCr 0:e6ceb13d2d05 804 Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_01 );
GregCr 0:e6ceb13d2d05 805 }
GregCr 0:e6ceb13d2d05 806 break;
GregCr 0:e6ceb13d2d05 807 }
GregCr 0:e6ceb13d2d05 808
GregCr 0:e6ceb13d2d05 809 this->settings.State = TX;
GregCr 0:e6ceb13d2d05 810 txTimeoutTimer.attach_us( this, &SX1276::OnTimeoutIrq, timeout );
GregCr 0:e6ceb13d2d05 811 SetOpMode( RF_OPMODE_TRANSMITTER );
GregCr 0:e6ceb13d2d05 812 }
GregCr 0:e6ceb13d2d05 813
GregCr 0:e6ceb13d2d05 814 int8_t SX1276::GetRssi( ModemType modem )
GregCr 0:e6ceb13d2d05 815 {
GregCr 0:e6ceb13d2d05 816 int8_t rssi = 0;
GregCr 0:e6ceb13d2d05 817
GregCr 0:e6ceb13d2d05 818 switch( modem )
GregCr 0:e6ceb13d2d05 819 {
GregCr 0:e6ceb13d2d05 820 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 821 rssi = -( Read( REG_RSSIVALUE ) >> 1 );
GregCr 0:e6ceb13d2d05 822 break;
GregCr 0:e6ceb13d2d05 823 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 824 if( this->settings.Channel > RF_MID_BAND_THRESH )
GregCr 0:e6ceb13d2d05 825 {
GregCr 0:e6ceb13d2d05 826 rssi = RSSI_OFFSET_HF + Read( REG_LR_RSSIVALUE );
GregCr 0:e6ceb13d2d05 827 }
GregCr 0:e6ceb13d2d05 828 else
GregCr 0:e6ceb13d2d05 829 {
GregCr 0:e6ceb13d2d05 830 rssi = RSSI_OFFSET_LF + Read( REG_LR_RSSIVALUE );
GregCr 0:e6ceb13d2d05 831 }
GregCr 0:e6ceb13d2d05 832 break;
GregCr 0:e6ceb13d2d05 833 default:
GregCr 0:e6ceb13d2d05 834 rssi = -1;
GregCr 0:e6ceb13d2d05 835 break;
GregCr 0:e6ceb13d2d05 836 }
GregCr 0:e6ceb13d2d05 837 return rssi;
GregCr 0:e6ceb13d2d05 838 }
GregCr 0:e6ceb13d2d05 839
GregCr 0:e6ceb13d2d05 840 void SX1276::SetOpMode( uint8_t opMode )
GregCr 0:e6ceb13d2d05 841 {
GregCr 0:e6ceb13d2d05 842 if( opMode != previousOpMode )
GregCr 0:e6ceb13d2d05 843 {
GregCr 0:e6ceb13d2d05 844 previousOpMode = opMode;
GregCr 0:e6ceb13d2d05 845 if( opMode == RF_OPMODE_SLEEP )
GregCr 0:e6ceb13d2d05 846 {
GregCr 0:e6ceb13d2d05 847 SetAntSwLowPower( true );
GregCr 0:e6ceb13d2d05 848 }
GregCr 0:e6ceb13d2d05 849 else
GregCr 0:e6ceb13d2d05 850 {
GregCr 0:e6ceb13d2d05 851 SetAntSwLowPower( false );
GregCr 0:e6ceb13d2d05 852 if( opMode == RF_OPMODE_TRANSMITTER )
GregCr 0:e6ceb13d2d05 853 {
GregCr 0:e6ceb13d2d05 854 SetAntSw( 1 );
GregCr 0:e6ceb13d2d05 855 }
GregCr 0:e6ceb13d2d05 856 else
GregCr 0:e6ceb13d2d05 857 {
GregCr 0:e6ceb13d2d05 858 SetAntSw( 0 );
GregCr 0:e6ceb13d2d05 859 }
GregCr 0:e6ceb13d2d05 860 }
GregCr 0:e6ceb13d2d05 861 Write( REG_OPMODE, ( Read( REG_OPMODE ) & RF_OPMODE_MASK ) | opMode );
GregCr 0:e6ceb13d2d05 862 }
GregCr 0:e6ceb13d2d05 863 }
GregCr 0:e6ceb13d2d05 864
GregCr 0:e6ceb13d2d05 865 void SX1276::SetModem( ModemType modem )
GregCr 0:e6ceb13d2d05 866 {
GregCr 4:f0ce52e94d3f 867 if( this->settings.Modem != modem )
GregCr 0:e6ceb13d2d05 868 {
GregCr 4:f0ce52e94d3f 869 this->settings.Modem = modem;
GregCr 4:f0ce52e94d3f 870 switch( this->settings.Modem )
GregCr 4:f0ce52e94d3f 871 {
GregCr 4:f0ce52e94d3f 872 default:
GregCr 4:f0ce52e94d3f 873 case MODEM_FSK:
GregCr 4:f0ce52e94d3f 874 SetOpMode( RF_OPMODE_SLEEP );
GregCr 4:f0ce52e94d3f 875 Write( REG_OPMODE, ( Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_MASK ) | RFLR_OPMODE_LONGRANGEMODE_OFF );
GregCr 4:f0ce52e94d3f 876
GregCr 4:f0ce52e94d3f 877 Write( REG_DIOMAPPING1, 0x00 );
GregCr 4:f0ce52e94d3f 878 Write( REG_DIOMAPPING2, 0x30 ); // DIO5=ModeReady
GregCr 4:f0ce52e94d3f 879 break;
GregCr 4:f0ce52e94d3f 880 case MODEM_LORA:
GregCr 4:f0ce52e94d3f 881 SetOpMode( RF_OPMODE_SLEEP );
GregCr 4:f0ce52e94d3f 882 Write( REG_OPMODE, ( Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_MASK ) | RFLR_OPMODE_LONGRANGEMODE_ON );
GregCr 4:f0ce52e94d3f 883
GregCr 4:f0ce52e94d3f 884 Write( REG_DIOMAPPING1, 0x00 );
GregCr 4:f0ce52e94d3f 885 Write( REG_DIOMAPPING2, 0x00 );
GregCr 4:f0ce52e94d3f 886 break;
GregCr 4:f0ce52e94d3f 887 }
GregCr 0:e6ceb13d2d05 888 }
GregCr 0:e6ceb13d2d05 889 }
GregCr 0:e6ceb13d2d05 890
GregCr 0:e6ceb13d2d05 891 void SX1276::OnTimeoutIrq( void )
GregCr 0:e6ceb13d2d05 892 {
GregCr 0:e6ceb13d2d05 893 RadioState state = IDLE;
GregCr 0:e6ceb13d2d05 894
GregCr 0:e6ceb13d2d05 895 switch( this->settings.State )
GregCr 0:e6ceb13d2d05 896 {
GregCr 0:e6ceb13d2d05 897 case RX:
GregCr 0:e6ceb13d2d05 898 if( this->settings.Modem == MODEM_FSK )
GregCr 0:e6ceb13d2d05 899 {
GregCr 0:e6ceb13d2d05 900 this->settings.FskPacketHandler.PreambleDetected = false;
GregCr 0:e6ceb13d2d05 901 this->settings.FskPacketHandler.SyncWordDetected = false;
GregCr 0:e6ceb13d2d05 902 this->settings.FskPacketHandler.NbBytes = 0;
GregCr 0:e6ceb13d2d05 903 this->settings.FskPacketHandler.Size = 0;
GregCr 0:e6ceb13d2d05 904
GregCr 0:e6ceb13d2d05 905 // Clear Irqs
GregCr 0:e6ceb13d2d05 906 Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
GregCr 0:e6ceb13d2d05 907 RF_IRQFLAGS1_PREAMBLEDETECT |
GregCr 0:e6ceb13d2d05 908 RF_IRQFLAGS1_SYNCADDRESSMATCH );
GregCr 0:e6ceb13d2d05 909 Write( REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN );
GregCr 0:e6ceb13d2d05 910
GregCr 0:e6ceb13d2d05 911 if( this->settings.Fsk.RxContinuous == true )
GregCr 0:e6ceb13d2d05 912 {
GregCr 0:e6ceb13d2d05 913 state = this->settings.State;
GregCr 0:e6ceb13d2d05 914 // Continuous mode restart Rx chain
GregCr 0:e6ceb13d2d05 915 Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
GregCr 0:e6ceb13d2d05 916 }
GregCr 0:e6ceb13d2d05 917 else
GregCr 0:e6ceb13d2d05 918 {
GregCr 0:e6ceb13d2d05 919 rxTimeoutSyncWord.attach_us( this, &SX1276::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
GregCr 0:e6ceb13d2d05 920 ( ( Read( REG_SYNCCONFIG ) &
GregCr 0:e6ceb13d2d05 921 ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
GregCr 0:e6ceb13d2d05 922 1.0 ) + 1.0 ) /
GregCr 0:e6ceb13d2d05 923 ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
GregCr 0:e6ceb13d2d05 924 }
GregCr 0:e6ceb13d2d05 925 }
GregCr 0:e6ceb13d2d05 926 if( ( rxTimeout != NULL ) )
GregCr 0:e6ceb13d2d05 927 {
GregCr 0:e6ceb13d2d05 928 rxTimeout( );
GregCr 0:e6ceb13d2d05 929 }
GregCr 0:e6ceb13d2d05 930 break;
GregCr 0:e6ceb13d2d05 931 case TX:
GregCr 0:e6ceb13d2d05 932 if( ( txTimeout != NULL ) )
GregCr 0:e6ceb13d2d05 933 {
GregCr 0:e6ceb13d2d05 934 txTimeout( );
GregCr 0:e6ceb13d2d05 935 }
GregCr 0:e6ceb13d2d05 936 break;
GregCr 0:e6ceb13d2d05 937 default:
GregCr 0:e6ceb13d2d05 938 break;
GregCr 0:e6ceb13d2d05 939 }
GregCr 0:e6ceb13d2d05 940 this->settings.State = state;
GregCr 0:e6ceb13d2d05 941 }
GregCr 0:e6ceb13d2d05 942
GregCr 0:e6ceb13d2d05 943 void SX1276::OnDio0Irq( void )
GregCr 0:e6ceb13d2d05 944 {
GregCr 0:e6ceb13d2d05 945 __IO uint8_t irqFlags = 0;
GregCr 0:e6ceb13d2d05 946
GregCr 0:e6ceb13d2d05 947 switch( this->settings.State )
GregCr 0:e6ceb13d2d05 948 {
GregCr 0:e6ceb13d2d05 949 case RX:
GregCr 0:e6ceb13d2d05 950 //TimerStop( &RxTimeoutTimer );
GregCr 0:e6ceb13d2d05 951 // RxDone interrupt
GregCr 0:e6ceb13d2d05 952 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 953 {
GregCr 0:e6ceb13d2d05 954 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 955 irqFlags = Read( REG_IRQFLAGS2 );
GregCr 0:e6ceb13d2d05 956 if( ( irqFlags & RF_IRQFLAGS2_CRCOK ) != RF_IRQFLAGS2_CRCOK )
GregCr 0:e6ceb13d2d05 957 {
GregCr 0:e6ceb13d2d05 958 // Clear Irqs
GregCr 0:e6ceb13d2d05 959 Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
GregCr 0:e6ceb13d2d05 960 RF_IRQFLAGS1_PREAMBLEDETECT |
GregCr 0:e6ceb13d2d05 961 RF_IRQFLAGS1_SYNCADDRESSMATCH );
GregCr 0:e6ceb13d2d05 962 Write( REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN );
GregCr 0:e6ceb13d2d05 963
GregCr 0:e6ceb13d2d05 964 if( this->settings.Fsk.RxContinuous == false )
GregCr 0:e6ceb13d2d05 965 {
GregCr 0:e6ceb13d2d05 966 this->settings.State = IDLE;
GregCr 0:e6ceb13d2d05 967 rxTimeoutSyncWord.attach_us( this, &SX1276::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
GregCr 0:e6ceb13d2d05 968 ( ( Read( REG_SYNCCONFIG ) &
GregCr 0:e6ceb13d2d05 969 ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
GregCr 0:e6ceb13d2d05 970 1.0 ) + 1.0 ) /
GregCr 0:e6ceb13d2d05 971 ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
GregCr 0:e6ceb13d2d05 972 }
GregCr 0:e6ceb13d2d05 973 else
GregCr 0:e6ceb13d2d05 974 {
GregCr 0:e6ceb13d2d05 975 // Continuous mode restart Rx chain
GregCr 0:e6ceb13d2d05 976 Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
GregCr 0:e6ceb13d2d05 977 }
GregCr 0:e6ceb13d2d05 978 rxTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 979
GregCr 0:e6ceb13d2d05 980 if( ( rxError != NULL ) )
GregCr 0:e6ceb13d2d05 981 {
GregCr 0:e6ceb13d2d05 982 rxError( );
GregCr 0:e6ceb13d2d05 983 }
GregCr 0:e6ceb13d2d05 984 this->settings.FskPacketHandler.PreambleDetected = false;
GregCr 0:e6ceb13d2d05 985 this->settings.FskPacketHandler.SyncWordDetected = false;
GregCr 0:e6ceb13d2d05 986 this->settings.FskPacketHandler.NbBytes = 0;
GregCr 0:e6ceb13d2d05 987 this->settings.FskPacketHandler.Size = 0;
GregCr 0:e6ceb13d2d05 988 break;
GregCr 0:e6ceb13d2d05 989 }
GregCr 0:e6ceb13d2d05 990
GregCr 0:e6ceb13d2d05 991 // Read received packet size
GregCr 0:e6ceb13d2d05 992 if( ( this->settings.FskPacketHandler.Size == 0 ) && ( this->settings.FskPacketHandler.NbBytes == 0 ) )
GregCr 0:e6ceb13d2d05 993 {
GregCr 0:e6ceb13d2d05 994 if( this->settings.Fsk.FixLen == false )
GregCr 0:e6ceb13d2d05 995 {
GregCr 0:e6ceb13d2d05 996 ReadFifo( ( uint8_t* )&this->settings.FskPacketHandler.Size, 1 );
GregCr 0:e6ceb13d2d05 997 }
GregCr 0:e6ceb13d2d05 998 else
GregCr 0:e6ceb13d2d05 999 {
GregCr 0:e6ceb13d2d05 1000 this->settings.FskPacketHandler.Size = Read( REG_PAYLOADLENGTH );
GregCr 0:e6ceb13d2d05 1001 }
GregCr 0:e6ceb13d2d05 1002 ReadFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
GregCr 0:e6ceb13d2d05 1003 this->settings.FskPacketHandler.NbBytes += ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
GregCr 0:e6ceb13d2d05 1004 }
GregCr 0:e6ceb13d2d05 1005 else
GregCr 0:e6ceb13d2d05 1006 {
GregCr 0:e6ceb13d2d05 1007 ReadFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
GregCr 0:e6ceb13d2d05 1008 this->settings.FskPacketHandler.NbBytes += ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
GregCr 0:e6ceb13d2d05 1009 }
GregCr 0:e6ceb13d2d05 1010
GregCr 0:e6ceb13d2d05 1011 if( this->settings.Fsk.RxContinuous == false )
GregCr 0:e6ceb13d2d05 1012 {
GregCr 0:e6ceb13d2d05 1013 this->settings.State = IDLE;
GregCr 0:e6ceb13d2d05 1014 rxTimeoutSyncWord.attach_us( this, &SX1276::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
GregCr 0:e6ceb13d2d05 1015 ( ( Read( REG_SYNCCONFIG ) &
GregCr 0:e6ceb13d2d05 1016 ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
GregCr 0:e6ceb13d2d05 1017 1.0 ) + 1.0 ) /
GregCr 0:e6ceb13d2d05 1018 ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
GregCr 0:e6ceb13d2d05 1019 }
GregCr 0:e6ceb13d2d05 1020 else
GregCr 0:e6ceb13d2d05 1021 {
GregCr 0:e6ceb13d2d05 1022 // Continuous mode restart Rx chain
GregCr 0:e6ceb13d2d05 1023 Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
GregCr 0:e6ceb13d2d05 1024 }
GregCr 0:e6ceb13d2d05 1025 rxTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 1026
GregCr 0:e6ceb13d2d05 1027 if( (rxDone != NULL ) )
GregCr 0:e6ceb13d2d05 1028 {
GregCr 0:e6ceb13d2d05 1029 rxDone( rxBuffer, this->settings.FskPacketHandler.Size, this->settings.FskPacketHandler.RssiValue, 0 );
GregCr 0:e6ceb13d2d05 1030 }
GregCr 0:e6ceb13d2d05 1031 this->settings.FskPacketHandler.PreambleDetected = false;
GregCr 0:e6ceb13d2d05 1032 this->settings.FskPacketHandler.SyncWordDetected = false;
GregCr 0:e6ceb13d2d05 1033 this->settings.FskPacketHandler.NbBytes = 0;
GregCr 0:e6ceb13d2d05 1034 this->settings.FskPacketHandler.Size = 0;
GregCr 0:e6ceb13d2d05 1035 break;
GregCr 0:e6ceb13d2d05 1036 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1037 {
GregCr 0:e6ceb13d2d05 1038 uint8_t snr = 0;
GregCr 0:e6ceb13d2d05 1039
GregCr 0:e6ceb13d2d05 1040 // Clear Irq
GregCr 0:e6ceb13d2d05 1041 Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_RXDONE );
GregCr 0:e6ceb13d2d05 1042
GregCr 0:e6ceb13d2d05 1043 irqFlags = Read( REG_LR_IRQFLAGS );
GregCr 0:e6ceb13d2d05 1044 if( ( irqFlags & RFLR_IRQFLAGS_PAYLOADCRCERROR_MASK ) == RFLR_IRQFLAGS_PAYLOADCRCERROR )
GregCr 0:e6ceb13d2d05 1045 {
GregCr 0:e6ceb13d2d05 1046 // Clear Irq
GregCr 0:e6ceb13d2d05 1047 Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_PAYLOADCRCERROR );
GregCr 0:e6ceb13d2d05 1048
GregCr 0:e6ceb13d2d05 1049 if( this->settings.LoRa.RxContinuous == false )
GregCr 0:e6ceb13d2d05 1050 {
GregCr 0:e6ceb13d2d05 1051 this->settings.State = IDLE;
GregCr 0:e6ceb13d2d05 1052 }
GregCr 0:e6ceb13d2d05 1053 rxTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 1054
GregCr 4:f0ce52e94d3f 1055 if( ( rxError != NULL ) )
GregCr 0:e6ceb13d2d05 1056 {
GregCr 0:e6ceb13d2d05 1057 rxError( );
GregCr 0:e6ceb13d2d05 1058 }
GregCr 0:e6ceb13d2d05 1059 break;
GregCr 0:e6ceb13d2d05 1060 }
GregCr 0:e6ceb13d2d05 1061
GregCr 0:e6ceb13d2d05 1062 this->settings.LoRaPacketHandler.SnrValue = Read( REG_LR_PKTSNRVALUE );
GregCr 0:e6ceb13d2d05 1063 if( this->settings.LoRaPacketHandler.SnrValue & 0x80 ) // The SNR sign bit is 1
GregCr 0:e6ceb13d2d05 1064 {
GregCr 0:e6ceb13d2d05 1065 // Invert and divide by 4
GregCr 0:e6ceb13d2d05 1066 snr = ( ( ~this->settings.LoRaPacketHandler.SnrValue + 1 ) & 0xFF ) >> 2;
GregCr 0:e6ceb13d2d05 1067 snr = -snr;
GregCr 0:e6ceb13d2d05 1068 }
GregCr 0:e6ceb13d2d05 1069 else
GregCr 0:e6ceb13d2d05 1070 {
GregCr 0:e6ceb13d2d05 1071 // Divide by 4
GregCr 0:e6ceb13d2d05 1072 snr = ( this->settings.LoRaPacketHandler.SnrValue & 0xFF ) >> 2;
GregCr 0:e6ceb13d2d05 1073 }
GregCr 0:e6ceb13d2d05 1074
GregCr 0:e6ceb13d2d05 1075 int8_t rssi = Read( REG_LR_PKTRSSIVALUE );
GregCr 0:e6ceb13d2d05 1076 if( this->settings.LoRaPacketHandler.SnrValue < 0 )
GregCr 0:e6ceb13d2d05 1077 {
GregCr 0:e6ceb13d2d05 1078 if( this->settings.Channel > RF_MID_BAND_THRESH )
GregCr 0:e6ceb13d2d05 1079 {
GregCr 0:e6ceb13d2d05 1080 this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_HF + rssi + ( rssi >> 4 ) +
GregCr 0:e6ceb13d2d05 1081 snr;
GregCr 0:e6ceb13d2d05 1082 }
GregCr 0:e6ceb13d2d05 1083 else
GregCr 0:e6ceb13d2d05 1084 {
GregCr 0:e6ceb13d2d05 1085 this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_LF + rssi + ( rssi >> 4 ) +
GregCr 0:e6ceb13d2d05 1086 snr;
GregCr 0:e6ceb13d2d05 1087 }
GregCr 0:e6ceb13d2d05 1088 }
GregCr 0:e6ceb13d2d05 1089 else
GregCr 0:e6ceb13d2d05 1090 {
GregCr 0:e6ceb13d2d05 1091 if( this->settings.Channel > RF_MID_BAND_THRESH )
GregCr 0:e6ceb13d2d05 1092 {
GregCr 0:e6ceb13d2d05 1093 this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_HF + rssi + ( rssi >> 4 );
GregCr 0:e6ceb13d2d05 1094 }
GregCr 0:e6ceb13d2d05 1095 else
GregCr 0:e6ceb13d2d05 1096 {
GregCr 0:e6ceb13d2d05 1097 this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_LF + rssi + ( rssi >> 4 );
GregCr 0:e6ceb13d2d05 1098 }
GregCr 0:e6ceb13d2d05 1099 }
GregCr 0:e6ceb13d2d05 1100
GregCr 0:e6ceb13d2d05 1101 this->settings.LoRaPacketHandler.Size = Read( REG_LR_RXNBBYTES );
GregCr 0:e6ceb13d2d05 1102 ReadFifo( rxBuffer, this->settings.LoRaPacketHandler.Size );
GregCr 0:e6ceb13d2d05 1103
GregCr 0:e6ceb13d2d05 1104 if( this->settings.LoRa.RxContinuous == false )
GregCr 0:e6ceb13d2d05 1105 {
GregCr 0:e6ceb13d2d05 1106 this->settings.State = IDLE;
GregCr 0:e6ceb13d2d05 1107 }
GregCr 0:e6ceb13d2d05 1108 rxTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 1109
GregCr 0:e6ceb13d2d05 1110 if( ( rxDone != NULL ) )
GregCr 0:e6ceb13d2d05 1111 {
GregCr 0:e6ceb13d2d05 1112 rxDone( rxBuffer, this->settings.LoRaPacketHandler.Size, this->settings.LoRaPacketHandler.RssiValue, this->settings.LoRaPacketHandler.SnrValue );
GregCr 0:e6ceb13d2d05 1113 }
GregCr 0:e6ceb13d2d05 1114 }
GregCr 0:e6ceb13d2d05 1115 break;
GregCr 0:e6ceb13d2d05 1116 default:
GregCr 0:e6ceb13d2d05 1117 break;
GregCr 0:e6ceb13d2d05 1118 }
GregCr 0:e6ceb13d2d05 1119 break;
GregCr 0:e6ceb13d2d05 1120 case TX:
GregCr 0:e6ceb13d2d05 1121 txTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 1122 // TxDone interrupt
GregCr 0:e6ceb13d2d05 1123 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1124 {
GregCr 0:e6ceb13d2d05 1125 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1126 // Clear Irq
GregCr 0:e6ceb13d2d05 1127 Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_TXDONE );
GregCr 0:e6ceb13d2d05 1128 // Intentional fall through
GregCr 0:e6ceb13d2d05 1129 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1130 default:
GregCr 0:e6ceb13d2d05 1131 this->settings.State = IDLE;
GregCr 0:e6ceb13d2d05 1132 if( ( txDone != NULL ) )
GregCr 0:e6ceb13d2d05 1133 {
GregCr 0:e6ceb13d2d05 1134 txDone( );
GregCr 0:e6ceb13d2d05 1135 }
GregCr 0:e6ceb13d2d05 1136 break;
GregCr 0:e6ceb13d2d05 1137 }
GregCr 0:e6ceb13d2d05 1138 break;
GregCr 0:e6ceb13d2d05 1139 default:
GregCr 0:e6ceb13d2d05 1140 break;
GregCr 0:e6ceb13d2d05 1141 }
GregCr 0:e6ceb13d2d05 1142 }
GregCr 0:e6ceb13d2d05 1143
GregCr 0:e6ceb13d2d05 1144 void SX1276::OnDio1Irq( void )
GregCr 0:e6ceb13d2d05 1145 {
GregCr 0:e6ceb13d2d05 1146 switch( this->settings.State )
GregCr 0:e6ceb13d2d05 1147 {
GregCr 0:e6ceb13d2d05 1148 case RX:
GregCr 0:e6ceb13d2d05 1149 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1150 {
GregCr 0:e6ceb13d2d05 1151 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1152 // FifoLevel interrupt
GregCr 0:e6ceb13d2d05 1153 // Read received packet size
GregCr 0:e6ceb13d2d05 1154 if( ( this->settings.FskPacketHandler.Size == 0 ) && ( this->settings.FskPacketHandler.NbBytes == 0 ) )
GregCr 0:e6ceb13d2d05 1155 {
GregCr 0:e6ceb13d2d05 1156 if( this->settings.Fsk.FixLen == false )
GregCr 0:e6ceb13d2d05 1157 {
GregCr 0:e6ceb13d2d05 1158 ReadFifo( ( uint8_t* )&this->settings.FskPacketHandler.Size, 1 );
GregCr 0:e6ceb13d2d05 1159 }
GregCr 0:e6ceb13d2d05 1160 else
GregCr 0:e6ceb13d2d05 1161 {
GregCr 0:e6ceb13d2d05 1162 this->settings.FskPacketHandler.Size = Read( REG_PAYLOADLENGTH );
GregCr 0:e6ceb13d2d05 1163 }
GregCr 0:e6ceb13d2d05 1164 }
GregCr 0:e6ceb13d2d05 1165
GregCr 0:e6ceb13d2d05 1166 if( ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes ) > this->settings.FskPacketHandler.FifoThresh )
GregCr 0:e6ceb13d2d05 1167 {
GregCr 0:e6ceb13d2d05 1168 ReadFifo( ( rxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.FifoThresh );
GregCr 0:e6ceb13d2d05 1169 this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.FifoThresh;
GregCr 0:e6ceb13d2d05 1170 }
GregCr 0:e6ceb13d2d05 1171 else
GregCr 0:e6ceb13d2d05 1172 {
GregCr 0:e6ceb13d2d05 1173 ReadFifo( ( rxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
GregCr 0:e6ceb13d2d05 1174 this->settings.FskPacketHandler.NbBytes += ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
GregCr 0:e6ceb13d2d05 1175 }
GregCr 0:e6ceb13d2d05 1176 break;
GregCr 0:e6ceb13d2d05 1177 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1178 // Sync time out
GregCr 0:e6ceb13d2d05 1179 rxTimeoutTimer.detach( );
GregCr 0:e6ceb13d2d05 1180 this->settings.State = IDLE;
GregCr 0:e6ceb13d2d05 1181 if( ( rxTimeout != NULL ) )
GregCr 0:e6ceb13d2d05 1182 {
GregCr 0:e6ceb13d2d05 1183 rxTimeout( );
GregCr 0:e6ceb13d2d05 1184 }
GregCr 0:e6ceb13d2d05 1185 break;
GregCr 0:e6ceb13d2d05 1186 default:
GregCr 0:e6ceb13d2d05 1187 break;
GregCr 0:e6ceb13d2d05 1188 }
GregCr 0:e6ceb13d2d05 1189 break;
GregCr 0:e6ceb13d2d05 1190 case TX:
GregCr 0:e6ceb13d2d05 1191 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1192 {
GregCr 0:e6ceb13d2d05 1193 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1194 // FifoLevel interrupt
GregCr 0:e6ceb13d2d05 1195 if( ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes ) > this->settings.FskPacketHandler.ChunkSize )
GregCr 0:e6ceb13d2d05 1196 {
GregCr 0:e6ceb13d2d05 1197 WriteFifo( ( rxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.ChunkSize );
GregCr 0:e6ceb13d2d05 1198 this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.ChunkSize;
GregCr 0:e6ceb13d2d05 1199 }
GregCr 0:e6ceb13d2d05 1200 else
GregCr 0:e6ceb13d2d05 1201 {
GregCr 0:e6ceb13d2d05 1202 // Write the last chunk of data
GregCr 0:e6ceb13d2d05 1203 WriteFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
GregCr 0:e6ceb13d2d05 1204 this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes;
GregCr 0:e6ceb13d2d05 1205 }
GregCr 0:e6ceb13d2d05 1206 break;
GregCr 0:e6ceb13d2d05 1207 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1208 break;
GregCr 0:e6ceb13d2d05 1209 default:
GregCr 0:e6ceb13d2d05 1210 break;
GregCr 0:e6ceb13d2d05 1211 }
GregCr 0:e6ceb13d2d05 1212 break;
GregCr 0:e6ceb13d2d05 1213 default:
GregCr 0:e6ceb13d2d05 1214 break;
GregCr 0:e6ceb13d2d05 1215 }
GregCr 0:e6ceb13d2d05 1216 }
GregCr 0:e6ceb13d2d05 1217
GregCr 0:e6ceb13d2d05 1218 void SX1276::OnDio2Irq( void )
GregCr 0:e6ceb13d2d05 1219 {
GregCr 0:e6ceb13d2d05 1220 switch( this->settings.State )
GregCr 0:e6ceb13d2d05 1221 {
GregCr 0:e6ceb13d2d05 1222 case RX:
GregCr 0:e6ceb13d2d05 1223 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1224 {
GregCr 0:e6ceb13d2d05 1225 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1226 if( ( this->settings.FskPacketHandler.PreambleDetected == true ) && ( this->settings.FskPacketHandler.SyncWordDetected == false ) )
GregCr 0:e6ceb13d2d05 1227 {
GregCr 0:e6ceb13d2d05 1228 rxTimeoutSyncWord.detach( );
GregCr 0:e6ceb13d2d05 1229
GregCr 0:e6ceb13d2d05 1230 this->settings.FskPacketHandler.SyncWordDetected = true;
GregCr 0:e6ceb13d2d05 1231
GregCr 0:e6ceb13d2d05 1232 this->settings.FskPacketHandler.RssiValue = -( Read( REG_RSSIVALUE ) >> 1 );
GregCr 0:e6ceb13d2d05 1233
GregCr 0:e6ceb13d2d05 1234 this->settings.FskPacketHandler.AfcValue = ( int32_t )( double )( ( ( uint16_t )Read( REG_AFCMSB ) << 8 ) |
GregCr 0:e6ceb13d2d05 1235 ( uint16_t )Read( REG_AFCLSB ) ) *
GregCr 0:e6ceb13d2d05 1236 ( double )FREQ_STEP;
GregCr 0:e6ceb13d2d05 1237 this->settings.FskPacketHandler.RxGain = ( Read( REG_LNA ) >> 5 ) & 0x07;
GregCr 0:e6ceb13d2d05 1238 }
GregCr 0:e6ceb13d2d05 1239 break;
GregCr 0:e6ceb13d2d05 1240 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1241 break;
GregCr 0:e6ceb13d2d05 1242 default:
GregCr 0:e6ceb13d2d05 1243 break;
GregCr 0:e6ceb13d2d05 1244 }
GregCr 0:e6ceb13d2d05 1245 break;
GregCr 0:e6ceb13d2d05 1246 case TX:
GregCr 0:e6ceb13d2d05 1247 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1248 {
GregCr 0:e6ceb13d2d05 1249 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1250 break;
GregCr 0:e6ceb13d2d05 1251 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1252 break;
GregCr 0:e6ceb13d2d05 1253 default:
GregCr 0:e6ceb13d2d05 1254 break;
GregCr 0:e6ceb13d2d05 1255 }
GregCr 0:e6ceb13d2d05 1256 break;
GregCr 0:e6ceb13d2d05 1257 default:
GregCr 0:e6ceb13d2d05 1258 break;
GregCr 0:e6ceb13d2d05 1259 }
GregCr 0:e6ceb13d2d05 1260 }
GregCr 0:e6ceb13d2d05 1261
GregCr 0:e6ceb13d2d05 1262 void SX1276::OnDio3Irq( void )
GregCr 0:e6ceb13d2d05 1263 {
GregCr 0:e6ceb13d2d05 1264 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1265 {
GregCr 0:e6ceb13d2d05 1266 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1267 break;
GregCr 0:e6ceb13d2d05 1268 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1269 break;
GregCr 0:e6ceb13d2d05 1270 default:
GregCr 0:e6ceb13d2d05 1271 break;
GregCr 0:e6ceb13d2d05 1272 }
GregCr 0:e6ceb13d2d05 1273 }
GregCr 0:e6ceb13d2d05 1274
GregCr 0:e6ceb13d2d05 1275 void SX1276::OnDio4Irq( void )
GregCr 0:e6ceb13d2d05 1276 {
GregCr 0:e6ceb13d2d05 1277 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1278 {
GregCr 0:e6ceb13d2d05 1279 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1280 {
GregCr 0:e6ceb13d2d05 1281 if( this->settings.FskPacketHandler.PreambleDetected == false )
GregCr 0:e6ceb13d2d05 1282 {
GregCr 0:e6ceb13d2d05 1283 this->settings.FskPacketHandler.PreambleDetected = true;
GregCr 0:e6ceb13d2d05 1284 }
GregCr 0:e6ceb13d2d05 1285 }
GregCr 0:e6ceb13d2d05 1286 break;
GregCr 0:e6ceb13d2d05 1287 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1288 break;
GregCr 0:e6ceb13d2d05 1289 default:
GregCr 0:e6ceb13d2d05 1290 break;
GregCr 0:e6ceb13d2d05 1291 }
GregCr 0:e6ceb13d2d05 1292 }
GregCr 0:e6ceb13d2d05 1293
GregCr 0:e6ceb13d2d05 1294 void SX1276::OnDio5Irq( void )
GregCr 0:e6ceb13d2d05 1295 {
GregCr 0:e6ceb13d2d05 1296 switch( this->settings.Modem )
GregCr 0:e6ceb13d2d05 1297 {
GregCr 0:e6ceb13d2d05 1298 case MODEM_FSK:
GregCr 0:e6ceb13d2d05 1299 break;
GregCr 0:e6ceb13d2d05 1300 case MODEM_LORA:
GregCr 0:e6ceb13d2d05 1301 break;
GregCr 0:e6ceb13d2d05 1302 default:
GregCr 0:e6ceb13d2d05 1303 break;
GregCr 0:e6ceb13d2d05 1304 }
GregCr 0:e6ceb13d2d05 1305 }