modtronix H
Based on SX1276Lib. Simplified and targeted for Modtronix inAir modules. All pins can now be specified to use interrupts or general purpose I/O pins.
Diff: inair.cpp
- Revision:
- 1:64a9c4a03244
- Child:
- 2:93cf5cb235ee
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/inair.cpp Sun Aug 30 09:39:25 2015 +1000
@@ -0,0 +1,1747 @@
+/*
+ / _____) _ | |
+( (____ _____ ____ _| |_ _____ ____| |__
+ \____ \| ___ | (_ _) ___ |/ ___) _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+ ( C )2014 Semtech
+
+Description: Actual implementation of a SX1276 radio, inherits Radio
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainers: Miguel Luis, Gregory Cristian and Nicolas Huguenin
+*/
+#include "inair.h"
+
+#define INAIR_ENABLE_FSK 0
+
+const FskBandwidth_t InAir::FskBandwidths[] =
+{
+ { 2600 , 0x17 },
+ { 3100 , 0x0F },
+ { 3900 , 0x07 },
+ { 5200 , 0x16 },
+ { 6300 , 0x0E },
+ { 7800 , 0x06 },
+ { 10400 , 0x15 },
+ { 12500 , 0x0D },
+ { 15600 , 0x05 },
+ { 20800 , 0x14 },
+ { 25000 , 0x0C },
+ { 31300 , 0x04 },
+ { 41700 , 0x13 },
+ { 50000 , 0x0B },
+ { 62500 , 0x03 },
+ { 83333 , 0x12 },
+ { 100000, 0x0A },
+ { 125000, 0x02 },
+ { 166700, 0x11 },
+ { 200000, 0x09 },
+ { 250000, 0x01 },
+ { 300000, 0x00 }, // Invalid Badwidth
+};
+
+
+InAir::InAir( void ( *txDone )( ), void ( *txTimeout ) ( ), void ( *rxDone ) ( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr ),
+ void ( *rxTimeout ) ( ), void ( *rxError ) ( ), void ( *fhssChangeChannel ) ( uint8_t channelIndex ), void ( *cadDone ) ( bool channelActivityDetected ),
+ PinName mosi, PinName miso, PinName sclk, PinName nss, PinName reset,
+ PinName dio0, PinName dio1, PinName dio2, PinName dio3)
+ : Radio( txDone, txTimeout, rxDone, rxTimeout, rxError, fhssChangeChannel, cadDone ),
+ spi( mosi, miso, sclk ),
+ nss( nss ),
+ reset( reset ),
+ dio0( dio0 ), dio1( dio1 ), dio2( dio2 ), dio3( dio3 ),
+ isRadioActive( false )
+{
+ wait_ms( 10 );
+ this->rxTx = 0;
+ this->rxBuffer = new uint8_t[RX_BUFFER_SIZE];
+ previousOpMode = RF_OPMODE_STANDBY;
+
+ this->settings.State = IDLE;
+
+ // From sx1276-inAir Constructor //////////////////////////////////////////
+ Reset( );
+
+ boardConnected = BOARD_UNKNOWN;
+
+ RxChainCalibration( );
+
+ IoInit( );
+
+ SetOpMode( RF_OPMODE_SLEEP );
+
+ IoIrqInit();
+
+ RadioRegistersInit( );
+
+ SetModem( MODEM_LORA );
+
+ this->settings.State = IDLE ;
+}
+
+InAir::~InAir( )
+{
+ delete this->rxBuffer;
+}
+
+void InAir::task(void)
+{
+#if(INAIR_DIO0_IS_INTERRUPT==0)
+ static bool dio0Was0 = false;
+#endif
+#if(INAIR_DIO1_IS_INTERRUPT==0)
+ static bool dio1Was0 = false;
+#endif
+#if(INAIR_DIO2_IS_INTERRUPT==0)
+ static bool dio2Was0 = false;
+#endif
+#if(INAIR_DIO3_IS_INTERRUPT==0)
+ static bool dio3Was0 = false;
+#endif
+
+#if(INAIR_DIO0_IS_INTERRUPT==0)
+ if (dio0.read() == 0) {
+ dio0Was0 = true;
+ }
+ else {
+ //Only do once on rising edge of 0-to-1 transition
+ if (dio0Was0 == true) {
+ dio0Was0 = false;
+ OnDio0Irq();
+ }
+ }
+#endif
+
+#if(INAIR_DIO1_IS_INTERRUPT==0)
+ if (dio1.read() == 0) {
+ dio1Was0 = true;
+ }
+ else {
+ //Only do once on rising edge of 0-to-1 transition
+ if (dio1Was0 == true) {
+ dio1Was0 = false;
+ OnDio1Irq();
+ }
+ }
+#endif
+
+#if(INAIR_DIO2_IS_INTERRUPT==0)
+ if (dio2.read() == 0) {
+ dio2Was0 = true;
+ }
+ else {
+ //Only do once on rising edge of 0-to-1 transition
+ if (dio2Was0 == true) {
+ dio2Was0 = false;
+ OnDio2Irq();
+ }
+ }
+#endif
+
+#if(INAIR_DIO3_IS_INTERRUPT==0)
+ if (dio3.read() == 0) {
+ dio3Was0 = true;
+ }
+ else {
+ //Only do once on rising edge of 0-to-1 transition
+ if (dio3Was0 == true) {
+ dio3Was0 = false;
+ OnDio3Irq();
+ }
+ }
+#endif
+
+}
+
+
+uint8_t InAir::GetBoardType( void )
+{
+ return boardConnected;
+}
+
+void InAir::SetBoardType( uint8_t boardType)
+{
+ boardConnected = boardType;
+}
+
+void InAir::RxChainCalibration( void )
+{
+ uint8_t regPaConfigInitVal;
+ uint32_t initialFreq;
+
+ // Save context
+ regPaConfigInitVal = this->Read( REG_PACONFIG );
+ initialFreq = ( double )( ( ( uint32_t )this->Read( REG_FRFMSB ) << 16 ) |
+ ( ( uint32_t )this->Read( REG_FRFMID ) << 8 ) |
+ ( ( uint32_t )this->Read( REG_FRFLSB ) ) ) * ( double )FREQ_STEP;
+
+ // Cut the PA just in case, RFO output, power = -1 dBm
+ this->Write( REG_PACONFIG, 0x00 );
+
+ // Launch Rx chain calibration for LF band
+ Write ( REG_IMAGECAL, ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_MASK ) | RF_IMAGECAL_IMAGECAL_START );
+ while( ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_RUNNING ) == RF_IMAGECAL_IMAGECAL_RUNNING )
+ {
+ }
+
+ // Sets a Frequency in HF band
+ settings.Channel= 868000000 ;
+
+ // Launch Rx chain calibration for HF band
+ Write ( REG_IMAGECAL, ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_MASK ) | RF_IMAGECAL_IMAGECAL_START );
+ while( ( Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_RUNNING ) == RF_IMAGECAL_IMAGECAL_RUNNING )
+ {
+ }
+
+ // Restore context
+ this->Write( REG_PACONFIG, regPaConfigInitVal );
+ SetChannel( initialFreq );
+}
+
+RadioState InAir::GetState( void )
+{
+ return this->settings.State;
+}
+
+void InAir::SetChannel( uint32_t freq )
+{
+ this->settings.Channel = freq;
+ freq = ( uint32_t )( ( double )freq / ( double )FREQ_STEP );
+ Write( REG_FRFMSB, ( uint8_t )( ( freq >> 16 ) & 0xFF ) );
+ Write( REG_FRFMID, ( uint8_t )( ( freq >> 8 ) & 0xFF ) );
+ Write( REG_FRFLSB, ( uint8_t )( freq & 0xFF ) );
+}
+
+bool InAir::IsChannelFree( ModemType modem, uint32_t freq, int8_t rssiThresh )
+{
+ int16_t rssi = 0;
+
+ SetModem( modem );
+
+ SetChannel( freq );
+
+ SetOpMode( RF_OPMODE_RECEIVER );
+
+ wait_ms( 1 );
+
+ rssi = GetRssi( modem );
+
+ Sleep( );
+
+ if( rssi > ( int16_t )rssiThresh )
+ {
+ return false;
+ }
+ return true;
+}
+
+uint32_t InAir::Random( void )
+{
+ uint8_t i;
+ uint32_t rnd = 0;
+
+ /*
+ * Radio setup for random number generation
+ */
+ // Set LoRa modem ON
+ SetModem( MODEM_LORA );
+
+ // Disable LoRa modem interrupts
+ Write( REG_LR_IRQFLAGSMASK, RFLR_IRQFLAGS_RXTIMEOUT |
+ RFLR_IRQFLAGS_RXDONE |
+ RFLR_IRQFLAGS_PAYLOADCRCERROR |
+ RFLR_IRQFLAGS_VALIDHEADER |
+ RFLR_IRQFLAGS_TXDONE |
+ RFLR_IRQFLAGS_CADDONE |
+ RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
+ RFLR_IRQFLAGS_CADDETECTED );
+
+ // Set radio in continuous reception
+ SetOpMode( RF_OPMODE_RECEIVER );
+
+ for( i = 0; i < 32; i++ )
+ {
+ wait_ms( 1 );
+ // Unfiltered RSSI value reading. Only takes the LSB value
+ rnd |= ( ( uint32_t )Read( REG_LR_RSSIWIDEBAND ) & 0x01 ) << i;
+ }
+
+ Sleep( );
+
+ return rnd;
+}
+
+/*!
+ * Returns the known FSK bandwidth registers value
+ *
+ * \param [IN] bandwidth Bandwidth value in Hz
+ * \retval regValue Bandwidth register value.
+ */
+uint8_t InAir::GetFskBandwidthRegValue( uint32_t bandwidth )
+{
+ uint8_t i;
+
+ for( i = 0; i < ( sizeof( FskBandwidths ) / sizeof( FskBandwidth_t ) ) - 1; i++ )
+ {
+ if( ( bandwidth >= FskBandwidths[i].bandwidth ) && ( bandwidth < FskBandwidths[i + 1].bandwidth ) )
+ {
+ return FskBandwidths[i].RegValue;
+ }
+ }
+ // ERROR: Value not found
+ while( 1 );
+}
+
+void InAir::SetRxConfig( ModemType modem, uint32_t bandwidth,
+ uint32_t datarate, uint8_t coderate,
+ uint32_t bandwidthAfc, uint16_t preambleLen,
+ uint16_t symbTimeout, bool fixLen,
+ uint8_t payloadLen,
+ bool crcOn, bool freqHopOn, uint8_t hopPeriod,
+ bool iqInverted, bool rxContinuous )
+{
+ SetModem( modem );
+
+ switch( modem )
+ {
+ case MODEM_FSK:
+ {
+#if (INAIR_ENABLE_FSK==1)
+ this->settings.Fsk.Bandwidth = bandwidth;
+ this->settings.Fsk.Datarate = datarate;
+ this->settings.Fsk.BandwidthAfc = bandwidthAfc;
+ this->settings.Fsk.FixLen = fixLen;
+ this->settings.Fsk.PayloadLen = payloadLen;
+ this->settings.Fsk.CrcOn = crcOn;
+ this->settings.Fsk.IqInverted = iqInverted;
+ this->settings.Fsk.RxContinuous = rxContinuous;
+ this->settings.Fsk.PreambleLen = preambleLen;
+
+ datarate = ( uint16_t )( ( double )XTAL_FREQ / ( double )datarate );
+ Write( REG_BITRATEMSB, ( uint8_t )( datarate >> 8 ) );
+ Write( REG_BITRATELSB, ( uint8_t )( datarate & 0xFF ) );
+
+ Write( REG_RXBW, GetFskBandwidthRegValue( bandwidth ) );
+ Write( REG_AFCBW, GetFskBandwidthRegValue( bandwidthAfc ) );
+
+ Write( REG_PREAMBLEMSB, ( uint8_t )( ( preambleLen >> 8 ) & 0xFF ) );
+ Write( REG_PREAMBLELSB, ( uint8_t )( preambleLen & 0xFF ) );
+
+ Write( REG_PACKETCONFIG1,
+ ( Read( REG_PACKETCONFIG1 ) &
+ RF_PACKETCONFIG1_CRC_MASK &
+ RF_PACKETCONFIG1_PACKETFORMAT_MASK ) |
+ ( ( fixLen == 1 ) ? RF_PACKETCONFIG1_PACKETFORMAT_FIXED : RF_PACKETCONFIG1_PACKETFORMAT_VARIABLE ) |
+ ( crcOn << 4 ) );
+ if( fixLen == 1 )
+ {
+ Write( REG_PAYLOADLENGTH, payloadLen );
+ }
+#endif //#if (INAIR_ENABLE_FSK==1)
+ }
+ break;
+ case MODEM_LORA:
+ {
+ if( bandwidth > 9 )
+ {
+ // Fatal error: Bandwidth must be 0-9 (7.8 - 500khz)
+ while( 1 );
+ }
+ //bandwidth += 7; //Changed bandwidth from 0-2 to 0-10
+ this->settings.LoRa.Bandwidth = bandwidth;
+ this->settings.LoRa.Datarate = datarate;
+ this->settings.LoRa.Coderate = coderate;
+ this->settings.LoRa.FixLen = fixLen;
+ this->settings.LoRa.PayloadLen = payloadLen;
+ this->settings.LoRa.CrcOn = crcOn;
+ this->settings.LoRa.FreqHopOn = freqHopOn;
+ this->settings.LoRa.HopPeriod = hopPeriod;
+ this->settings.LoRa.IqInverted = iqInverted;
+ this->settings.LoRa.RxContinuous = rxContinuous;
+
+ if( datarate > 12 )
+ {
+ datarate = 12;
+ }
+ else if( datarate < 6 )
+ {
+ datarate = 6;
+ }
+
+ //bandwidth 6=62.5, 7=125, 8=250, 9=500, datarate=SF. LowDatarateOptimize is mandatory when symbol length > 16ms
+ //LowDatarateOptimize = 0 when (BW=500) or (BW=250 and SF=12), else it is ON (Tsym > 16ms)
+ if( ( ( bandwidth == 8 ) && ( datarate == 12 ) ) ||
+ ( ( bandwidth == 7 ) && ( datarate > 10 ) ) ||
+ ( ( bandwidth == 6 ) && ( datarate > 9 ) ) ||
+ ( ( bandwidth == 5 ) && ( datarate > 9 ) ) ||
+ ( ( bandwidth == 4 ) && ( datarate > 8 ) ) || ( bandwidth < 4 )
+ //The below is actually correct method, but assume BW = 20.8 and lower will always have SF > 8
+// ( ( bandwidth == 3 ) && ( datarate > 8 ) ) ||
+// ( ( bandwidth == 2 ) && ( datarate > 7 ) ) ||
+// ( ( bandwidth == 1 ) && ( datarate > 7 ) ) ||
+// ( ( bandwidth == 0 ) && ( datarate > 6 ) )
+ )
+ {
+ this->settings.LoRa.LowDatarateOptimize = 0x01;
+ }
+ else
+ {
+ this->settings.LoRa.LowDatarateOptimize = 0x00;
+ }
+
+ Write( REG_LR_MODEMCONFIG1,
+ ( Read( REG_LR_MODEMCONFIG1 ) &
+ RFLR_MODEMCONFIG1_BW_MASK &
+ RFLR_MODEMCONFIG1_CODINGRATE_MASK &
+ RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
+ ( bandwidth << 4 ) | ( coderate << 1 ) |
+ fixLen );
+
+ Write( REG_LR_MODEMCONFIG2,
+ ( Read( REG_LR_MODEMCONFIG2 ) &
+ RFLR_MODEMCONFIG2_SF_MASK &
+ RFLR_MODEMCONFIG2_RXPAYLOADCRC_MASK &
+ RFLR_MODEMCONFIG2_SYMBTIMEOUTMSB_MASK ) |
+ ( datarate << 4 ) | ( crcOn << 2 ) |
+ ( ( symbTimeout >> 8 ) & ~RFLR_MODEMCONFIG2_SYMBTIMEOUTMSB_MASK ) );
+
+ Write( REG_LR_MODEMCONFIG3,
+ ( Read( REG_LR_MODEMCONFIG3 ) &
+ RFLR_MODEMCONFIG3_LOWDATARATEOPTIMIZE_MASK ) |
+ ( this->settings.LoRa.LowDatarateOptimize << 3 ) );
+
+ Write( REG_LR_SYMBTIMEOUTLSB, ( uint8_t )( symbTimeout & 0xFF ) );
+
+ Write( REG_LR_PREAMBLEMSB, ( uint8_t )( ( preambleLen >> 8 ) & 0xFF ) );
+ Write( REG_LR_PREAMBLELSB, ( uint8_t )( preambleLen & 0xFF ) );
+
+ if( fixLen == 1 )
+ {
+ Write( REG_LR_PAYLOADLENGTH, payloadLen );
+ }
+
+ if( this->settings.LoRa.FreqHopOn == true )
+ {
+ Write( REG_LR_PLLHOP, ( Read( REG_LR_PLLHOP ) & RFLR_PLLHOP_FASTHOP_MASK ) | RFLR_PLLHOP_FASTHOP_ON );
+ Write( REG_LR_HOPPERIOD, this->settings.LoRa.HopPeriod );
+ }
+
+ if( datarate == 6 )
+ {
+ Write( REG_LR_DETECTOPTIMIZE,
+ ( Read( REG_LR_DETECTOPTIMIZE ) &
+ RFLR_DETECTIONOPTIMIZE_MASK ) |
+ RFLR_DETECTIONOPTIMIZE_SF6 );
+ Write( REG_LR_DETECTIONTHRESHOLD,
+ RFLR_DETECTIONTHRESH_SF6 );
+ }
+ else
+ {
+ Write( REG_LR_DETECTOPTIMIZE,
+ ( Read( REG_LR_DETECTOPTIMIZE ) &
+ RFLR_DETECTIONOPTIMIZE_MASK ) |
+ RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
+ Write( REG_LR_DETECTIONTHRESHOLD,
+ RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
+ }
+ }
+ break;
+ }
+}
+
+void InAir::SetTxConfig( ModemType modem, int8_t power, uint32_t fdev,
+ uint32_t bandwidth, uint32_t datarate,
+ uint8_t coderate, uint16_t preambleLen,
+ bool fixLen, bool crcOn, bool freqHopOn,
+ uint8_t hopPeriod, bool iqInverted, uint32_t timeout )
+{
+ uint8_t paConfig = 0;
+ uint8_t paDac = 0;
+
+ SetModem( modem );
+
+ paConfig = Read( REG_PACONFIG );
+ paDac = Read( REG_PADAC );
+
+ paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | GetPaSelect( this->settings.Channel );
+ paConfig = ( paConfig & RF_PACONFIG_MAX_POWER_MASK ) | 0x70;
+
+ if( ( paConfig & RF_PACONFIG_PASELECT_PABOOST ) == RF_PACONFIG_PASELECT_PABOOST )
+ {
+ if( power > 17 )
+ {
+ paDac = ( paDac & RF_PADAC_20DBM_MASK ) | RF_PADAC_20DBM_ON;
+ }
+ else
+ {
+ paDac = ( paDac & RF_PADAC_20DBM_MASK ) | RF_PADAC_20DBM_OFF;
+ }
+ if( ( paDac & RF_PADAC_20DBM_ON ) == RF_PADAC_20DBM_ON )
+ {
+ if( power < 5 )
+ {
+ power = 5;
+ }
+ if( power > 20 )
+ {
+ power = 20;
+ }
+ paConfig = ( paConfig & RF_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power - 5 ) & 0x0F );
+ }
+ else
+ {
+ if( power < 2 )
+ {
+ power = 2;
+ }
+ if( power > 17 )
+ {
+ power = 17;
+ }
+ paConfig = ( paConfig & RF_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power - 2 ) & 0x0F );
+ }
+ }
+ else
+ {
+ if( power < -1 )
+ {
+ power = -1;
+ }
+ if( power > 14 )
+ {
+ power = 14;
+ }
+ paConfig = ( paConfig & RF_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power + 1 ) & 0x0F );
+ }
+ Write( REG_PACONFIG, paConfig );
+ Write( REG_PADAC, paDac );
+
+ switch( modem )
+ {
+ case MODEM_FSK:
+ {
+#if (INAIR_ENABLE_FSK==1)
+ this->settings.Fsk.Power = power;
+ this->settings.Fsk.Fdev = fdev;
+ this->settings.Fsk.Bandwidth = bandwidth;
+ this->settings.Fsk.Datarate = datarate;
+ this->settings.Fsk.PreambleLen = preambleLen;
+ this->settings.Fsk.FixLen = fixLen;
+ this->settings.Fsk.CrcOn = crcOn;
+ this->settings.Fsk.IqInverted = iqInverted;
+ this->settings.Fsk.TxTimeout = timeout;
+
+ fdev = ( uint16_t )( ( double )fdev / ( double )FREQ_STEP );
+ Write( REG_FDEVMSB, ( uint8_t )( fdev >> 8 ) );
+ Write( REG_FDEVLSB, ( uint8_t )( fdev & 0xFF ) );
+
+ datarate = ( uint16_t )( ( double )XTAL_FREQ / ( double )datarate );
+ Write( REG_BITRATEMSB, ( uint8_t )( datarate >> 8 ) );
+ Write( REG_BITRATELSB, ( uint8_t )( datarate & 0xFF ) );
+
+ Write( REG_PREAMBLEMSB, ( preambleLen >> 8 ) & 0x00FF );
+ Write( REG_PREAMBLELSB, preambleLen & 0xFF );
+
+ Write( REG_PACKETCONFIG1,
+ ( Read( REG_PACKETCONFIG1 ) &
+ RF_PACKETCONFIG1_CRC_MASK &
+ RF_PACKETCONFIG1_PACKETFORMAT_MASK ) |
+ ( ( fixLen == 1 ) ? RF_PACKETCONFIG1_PACKETFORMAT_FIXED : RF_PACKETCONFIG1_PACKETFORMAT_VARIABLE ) |
+ ( crcOn << 4 ) );
+#endif //#if (INAIR_ENABLE_FSK==1)
+ }
+ break;
+ case MODEM_LORA:
+ {
+ this->settings.LoRa.Power = power;
+ if( bandwidth > 9 )
+ {
+ // Fatal error: Bandwidth must be 0-9 (7.8 - 500khz)
+ while( 1 );
+ }
+ //bandwidth += 7;
+ this->settings.LoRa.Bandwidth = bandwidth;
+ this->settings.LoRa.Datarate = datarate;
+ this->settings.LoRa.Coderate = coderate;
+ this->settings.LoRa.PreambleLen = preambleLen;
+ this->settings.LoRa.FixLen = fixLen;
+ this->settings.LoRa.CrcOn = crcOn;
+ this->settings.LoRa.FreqHopOn = freqHopOn;
+ this->settings.LoRa.HopPeriod = hopPeriod;
+ this->settings.LoRa.IqInverted = iqInverted;
+ this->settings.LoRa.TxTimeout = timeout;
+
+ if( datarate > 12 )
+ {
+ datarate = 12;
+ }
+ else if( datarate < 6 )
+ {
+ datarate = 6;
+ }
+ //bandwidth 6=62.5, 7=125, 8=250, 9=500, datarate=SF. LowDatarateOptimize is mandatory when symbol length > 16ms
+ //LowDatarateOptimize = 0 when (BW=500) or (BW=250 and SF=12), else it is ON (Tsym > 16ms)
+ if( ( ( bandwidth == 8 ) && ( datarate == 12 ) ) ||
+ ( ( bandwidth == 7 ) && ( datarate > 10 ) ) ||
+ ( ( bandwidth == 6 ) && ( datarate > 9 ) ) ||
+ ( ( bandwidth == 5 ) && ( datarate > 9 ) ) ||
+ ( ( bandwidth == 4 ) && ( datarate > 8 ) ) || ( bandwidth < 4 )
+ //The below is actually correct method, but assume BW = 20.8 and lower will always have SF > 8
+// ( ( bandwidth == 3 ) && ( datarate > 8 ) ) ||
+// ( ( bandwidth == 2 ) && ( datarate > 7 ) ) ||
+// ( ( bandwidth == 1 ) && ( datarate > 7 ) ) ||
+// ( ( bandwidth == 0 ) && ( datarate > 6 ) )
+ )
+ {
+ this->settings.LoRa.LowDatarateOptimize = 0x01;
+ }
+ else
+ {
+ this->settings.LoRa.LowDatarateOptimize = 0x00;
+ }
+
+ if( this->settings.LoRa.FreqHopOn == true )
+ {
+ Write( REG_LR_PLLHOP, ( Read( REG_LR_PLLHOP ) & RFLR_PLLHOP_FASTHOP_MASK ) | RFLR_PLLHOP_FASTHOP_ON );
+ Write( REG_LR_HOPPERIOD, this->settings.LoRa.HopPeriod );
+ }
+
+ Write( REG_LR_MODEMCONFIG1,
+ ( Read( REG_LR_MODEMCONFIG1 ) &
+ RFLR_MODEMCONFIG1_BW_MASK &
+ RFLR_MODEMCONFIG1_CODINGRATE_MASK &
+ RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
+ ( bandwidth << 4 ) | ( coderate << 1 ) |
+ fixLen );
+
+ Write( REG_LR_MODEMCONFIG2,
+ ( Read( REG_LR_MODEMCONFIG2 ) &
+ RFLR_MODEMCONFIG2_SF_MASK &
+ RFLR_MODEMCONFIG2_RXPAYLOADCRC_MASK ) |
+ ( datarate << 4 ) | ( crcOn << 2 ) );
+
+ Write( REG_LR_MODEMCONFIG3,
+ ( Read( REG_LR_MODEMCONFIG3 ) &
+ RFLR_MODEMCONFIG3_LOWDATARATEOPTIMIZE_MASK ) |
+ ( this->settings.LoRa.LowDatarateOptimize << 3 ) );
+
+ Write( REG_LR_PREAMBLEMSB, ( preambleLen >> 8 ) & 0x00FF );
+ Write( REG_LR_PREAMBLELSB, preambleLen & 0xFF );
+
+ if( datarate == 6 )
+ {
+ Write( REG_LR_DETECTOPTIMIZE,
+ ( Read( REG_LR_DETECTOPTIMIZE ) &
+ RFLR_DETECTIONOPTIMIZE_MASK ) |
+ RFLR_DETECTIONOPTIMIZE_SF6 );
+ Write( REG_LR_DETECTIONTHRESHOLD,
+ RFLR_DETECTIONTHRESH_SF6 );
+ }
+ else
+ {
+ Write( REG_LR_DETECTOPTIMIZE,
+ ( Read( REG_LR_DETECTOPTIMIZE ) &
+ RFLR_DETECTIONOPTIMIZE_MASK ) |
+ RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
+ Write( REG_LR_DETECTIONTHRESHOLD,
+ RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
+ }
+ }
+ break;
+ }
+}
+
+double InAir::TimeOnAir( ModemType modem, uint8_t pktLen )
+{
+ double airTime = 0.0;
+
+ switch( modem )
+ {
+ case MODEM_FSK:
+#if (INAIR_ENABLE_FSK==1)
+ {
+ airTime = ceil( ( 8 * ( this->settings.Fsk.PreambleLen +
+ ( ( Read( REG_SYNCCONFIG ) & ~RF_SYNCCONFIG_SYNCSIZE_MASK ) + 1 ) +
+ ( ( this->settings.Fsk.FixLen == 0x01 ) ? 0.0 : 1.0 ) +
+ ( ( ( Read( REG_PACKETCONFIG1 ) & ~RF_PACKETCONFIG1_ADDRSFILTERING_MASK ) != 0x00 ) ? 1.0 : 0 ) +
+ pktLen +
+ ( ( this->settings.Fsk.CrcOn == 0x01 ) ? 2.0 : 0 ) ) /
+ this->settings.Fsk.Datarate ) * 1e6 );
+ }
+#endif //#if (INAIR_ENABLE_FSK==1)
+ break;
+ case MODEM_LORA:
+ {
+ double bw = 0.0;
+ switch( this->settings.LoRa.Bandwidth )
+ {
+ case 0: // 7.8 kHz
+ bw = 78e2;
+ break;
+ case 1: // 10.4 kHz
+ bw = 104e2;
+ break;
+ case 2: // 15.6 kHz
+ bw = 156e2;
+ break;
+ case 3: // 20.8 kHz
+ bw = 208e2;
+ break;
+ case 4: // 31.2 kHz
+ bw = 312e2;
+ break;
+ case 5: // 41.4 kHz
+ bw = 414e2;
+ break;
+ case 6: // 62.5 kHz
+ bw = 625e2;
+ break;
+ case 7: // 125 kHz
+ bw = 125e3;
+ break;
+ case 8: // 250 kHz
+ bw = 250e3;
+ break;
+ case 9: // 500 kHz
+ bw = 500e3;
+ break;
+ }
+
+ // Symbol rate : time for one symbol (secs)
+ double rs = bw / ( 1 << this->settings.LoRa.Datarate );
+ double ts = 1 / rs;
+ // time of preamble
+ double tPreamble = ( this->settings.LoRa.PreambleLen + 4.25 ) * ts;
+ // Symbol length of payload and time
+ double tmp = ceil( ( 8 * pktLen - 4 * this->settings.LoRa.Datarate +
+ 28 + 16 * this->settings.LoRa.CrcOn -
+ ( this->settings.LoRa.FixLen ? 20 : 0 ) ) /
+ ( double )( 4 * this->settings.LoRa.Datarate -
+ ( ( this->settings.LoRa.LowDatarateOptimize > 0 ) ? 8 : 0 ) ) ) *
+ ( this->settings.LoRa.Coderate + 4 );
+ double nPayload = 8 + ( ( tmp > 0 ) ? tmp : 0 );
+ double tPayload = nPayload * ts;
+ // Time on air
+ double tOnAir = tPreamble + tPayload;
+ // return us secs
+ airTime = floor( tOnAir * 1e6 + 0.999 );
+ }
+ break;
+ }
+ return airTime;
+}
+
+void InAir::Send( uint8_t *buffer, uint8_t size )
+{
+ uint32_t txTimeout = 0;
+
+ this->settings.State = IDLE;
+
+ switch( this->settings.Modem )
+ {
+ case MODEM_FSK:
+#if (INAIR_ENABLE_FSK==1)
+ {
+ this->settings.FskPacketHandler.NbBytes = 0;
+ this->settings.FskPacketHandler.Size = size;
+
+ if( this->settings.Fsk.FixLen == false )
+ {
+ WriteFifo( ( uint8_t* )&size, 1 );
+ }
+ else
+ {
+ Write( REG_PAYLOADLENGTH, size );
+ }
+
+ if( ( size > 0 ) && ( size <= 64 ) )
+ {
+ this->settings.FskPacketHandler.ChunkSize = size;
+ }
+ else
+ {
+ this->settings.FskPacketHandler.ChunkSize = 32;
+ }
+
+ // Write payload buffer
+ WriteFifo( buffer, this->settings.FskPacketHandler.ChunkSize );
+ this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.ChunkSize;
+ txTimeout = this->settings.Fsk.TxTimeout;
+ }
+#endif //#if (INAIR_ENABLE_FSK==1)
+ break;
+ case MODEM_LORA:
+ {
+ if( this->settings.LoRa.IqInverted == true )
+ {
+ Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_ON ) );
+ }
+ else
+ {
+ Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_OFF ) );
+ }
+
+ this->settings.LoRaPacketHandler.Size = size;
+
+ // Initializes the payload size
+ Write( REG_LR_PAYLOADLENGTH, size );
+
+ // Full buffer used for Tx
+ Write( REG_LR_FIFOTXBASEADDR, 0 );
+ Write( REG_LR_FIFOADDRPTR, 0 );
+
+ // FIFO operations can not take place in Sleep mode
+ if( ( Read( REG_OPMODE ) & ~RF_OPMODE_MASK ) == RF_OPMODE_SLEEP )
+ {
+ Standby( );
+ wait_ms( 1 );
+ }
+ // Write payload buffer
+ WriteFifo( buffer, size );
+ txTimeout = this->settings.LoRa.TxTimeout;
+ }
+ break;
+ }
+
+ Tx( txTimeout );
+}
+
+void InAir::Sleep( void )
+{
+ // Initialize driver timeout timers
+ txTimeoutTimer.detach( );
+ rxTimeoutTimer.detach( );
+ SetOpMode( RF_OPMODE_SLEEP );
+}
+
+void InAir::Standby( void )
+{
+ txTimeoutTimer.detach( );
+ rxTimeoutTimer.detach( );
+ SetOpMode( RF_OPMODE_STANDBY );
+}
+
+void InAir::Rx( uint32_t timeout )
+{
+ bool rxContinuous = false;
+
+ switch( this->settings.Modem )
+ {
+ case MODEM_FSK:
+#if (INAIR_ENABLE_FSK==1)
+ {
+ rxContinuous = this->settings.Fsk.RxContinuous;
+
+ // DIO0=PayloadReady
+ // DIO1=FifoLevel
+ // DIO2=SyncAddr
+ // DIO3=FifoEmpty
+ // DIO4=Preamble
+ // DIO5=ModeReady
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RF_DIOMAPPING1_DIO0_MASK & RF_DIOMAPPING1_DIO1_MASK &
+ RF_DIOMAPPING1_DIO2_MASK ) |
+ RF_DIOMAPPING1_DIO0_00 |
+ RF_DIOMAPPING1_DIO2_11 );
+
+ Write( REG_DIOMAPPING2, ( Read( REG_DIOMAPPING2 ) & RF_DIOMAPPING2_DIO4_MASK &
+ RF_DIOMAPPING2_MAP_MASK ) |
+ RF_DIOMAPPING2_DIO4_11 |
+ RF_DIOMAPPING2_MAP_PREAMBLEDETECT );
+
+ this->settings.FskPacketHandler.FifoThresh = Read( REG_FIFOTHRESH ) & 0x3F;
+
+ this->settings.FskPacketHandler.PreambleDetected = false;
+ this->settings.FskPacketHandler.SyncWordDetected = false;
+ this->settings.FskPacketHandler.NbBytes = 0;
+ this->settings.FskPacketHandler.Size = 0;
+ }
+#endif //#if (INAIR_ENABLE_FSK==1)
+ break;
+ case MODEM_LORA:
+ {
+ if( this->settings.LoRa.IqInverted == true )
+ {
+ Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_ON | RFLR_INVERTIQ_TX_OFF ) );
+ }
+ else
+ {
+ Write( REG_LR_INVERTIQ, ( ( Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_OFF ) );
+ }
+
+ rxContinuous = this->settings.LoRa.RxContinuous;
+
+ if( this->settings.LoRa.FreqHopOn == true )
+ {
+ Write( REG_LR_IRQFLAGSMASK, //RFLR_IRQFLAGS_RXTIMEOUT |
+ //RFLR_IRQFLAGS_RXDONE |
+ //RFLR_IRQFLAGS_PAYLOADCRCERROR |
+ RFLR_IRQFLAGS_VALIDHEADER |
+ RFLR_IRQFLAGS_TXDONE |
+ RFLR_IRQFLAGS_CADDONE |
+ //RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
+ RFLR_IRQFLAGS_CADDETECTED );
+
+ // DIO0=RxDone, DIO2=FhssChangeChannel
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK & RFLR_DIOMAPPING1_DIO2_MASK ) | RFLR_DIOMAPPING1_DIO0_00 | RFLR_DIOMAPPING1_DIO2_00 );
+ }
+ else
+ {
+ Write( REG_LR_IRQFLAGSMASK, //RFLR_IRQFLAGS_RXTIMEOUT |
+ //RFLR_IRQFLAGS_RXDONE |
+ //RFLR_IRQFLAGS_PAYLOADCRCERROR |
+ RFLR_IRQFLAGS_VALIDHEADER |
+ RFLR_IRQFLAGS_TXDONE |
+ RFLR_IRQFLAGS_CADDONE |
+ RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
+ RFLR_IRQFLAGS_CADDETECTED );
+
+ // DIO0=RxDone
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_00 );
+ }
+
+ Write( REG_LR_FIFORXBASEADDR, 0 );
+ Write( REG_LR_FIFOADDRPTR, 0 );
+ }
+ break;
+ }
+
+ memset( rxBuffer, 0, ( size_t )RX_BUFFER_SIZE );
+
+ this->settings.State = RX_DONE;
+ if( timeout != 0 )
+ {
+ rxTimeoutTimer.attach_us( this, &InAir::OnTimeoutIrq, timeout );
+ }
+
+ if( this->settings.Modem == MODEM_FSK )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ SetOpMode( RF_OPMODE_RECEIVER );
+
+ if( rxContinuous == false )
+ {
+ rxTimeoutSyncWord.attach_us( this, &InAir::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
+ ( ( Read( REG_SYNCCONFIG ) &
+ ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
+ 1.0 ) + 1.0 ) /
+ ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
+ }
+#endif //#if (INAIR_ENABLE_FSK==1)
+ }
+ else
+ {
+ if( rxContinuous == true )
+ {
+ SetOpMode( RFLR_OPMODE_RECEIVER );
+ }
+ else
+ {
+ SetOpMode( RFLR_OPMODE_RECEIVER_SINGLE );
+ }
+ }
+}
+
+void InAir::Tx( uint32_t timeout )
+{
+ switch( this->settings.Modem )
+ {
+ case MODEM_FSK:
+#if (INAIR_ENABLE_FSK==1)
+ {
+ // DIO0=PacketSent
+ // DIO1=FifoLevel
+ // DIO2=FifoFull
+ // DIO3=FifoEmpty
+ // DIO4=LowBat
+ // DIO5=ModeReady
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RF_DIOMAPPING1_DIO0_MASK & RF_DIOMAPPING1_DIO1_MASK &
+ RF_DIOMAPPING1_DIO2_MASK ) );
+
+ Write( REG_DIOMAPPING2, ( Read( REG_DIOMAPPING2 ) & RF_DIOMAPPING2_DIO4_MASK &
+ RF_DIOMAPPING2_MAP_MASK ) );
+ this->settings.FskPacketHandler.FifoThresh = Read( REG_FIFOTHRESH ) & 0x3F;
+ }
+#endif //#if (INAIR_ENABLE_FSK==1)
+ break;
+ case MODEM_LORA:
+ {
+
+ if( this->settings.LoRa.FreqHopOn == true )
+ {
+ Write( REG_LR_IRQFLAGSMASK, RFLR_IRQFLAGS_RXTIMEOUT |
+ RFLR_IRQFLAGS_RXDONE |
+ RFLR_IRQFLAGS_PAYLOADCRCERROR |
+ RFLR_IRQFLAGS_VALIDHEADER |
+ //RFLR_IRQFLAGS_TXDONE |
+ RFLR_IRQFLAGS_CADDONE |
+ //RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
+ RFLR_IRQFLAGS_CADDETECTED );
+
+ // DIO0=TxDone
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_01 );
+ // DIO2=FhssChangeChannel
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO2_MASK ) | RFLR_DIOMAPPING1_DIO2_00 );
+ }
+ else
+ {
+ Write( REG_LR_IRQFLAGSMASK, RFLR_IRQFLAGS_RXTIMEOUT |
+ RFLR_IRQFLAGS_RXDONE |
+ RFLR_IRQFLAGS_PAYLOADCRCERROR |
+ RFLR_IRQFLAGS_VALIDHEADER |
+ //RFLR_IRQFLAGS_TXDONE |
+ RFLR_IRQFLAGS_CADDONE |
+ RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL |
+ RFLR_IRQFLAGS_CADDETECTED );
+
+ // DIO0=TxDone
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_01 );
+ }
+ }
+ break;
+ }
+
+ this->settings.State = TX_DONE;
+ txTimeoutTimer.attach_us( this, &InAir::OnTimeoutIrq, timeout );
+ SetOpMode( RF_OPMODE_TRANSMITTER );
+}
+
+void InAir::StartCad( void )
+{
+ switch( this->settings.Modem )
+ {
+ case MODEM_FSK:
+ {
+
+ }
+ break;
+ case MODEM_LORA:
+ {
+ Write( REG_LR_IRQFLAGSMASK, RFLR_IRQFLAGS_RXTIMEOUT |
+ RFLR_IRQFLAGS_RXDONE |
+ RFLR_IRQFLAGS_PAYLOADCRCERROR |
+ RFLR_IRQFLAGS_VALIDHEADER |
+ RFLR_IRQFLAGS_TXDONE |
+ //RFLR_IRQFLAGS_CADDONE |
+ RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL // |
+ //RFLR_IRQFLAGS_CADDETECTED
+ );
+
+ // DIO3=CADDone
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_00 );
+
+ this->settings.State = CAD;
+ SetOpMode( RFLR_OPMODE_CAD );
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+int16_t InAir::GetRssi( ModemType modem )
+{
+ int16_t rssi = 0;
+
+ switch( modem )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ case MODEM_FSK:
+ rssi = -( Read( REG_RSSIVALUE ) >> 1 );
+ break;
+#endif
+ case MODEM_LORA:
+ if( this->settings.Channel > RF_MID_BAND_THRESH )
+ {
+ rssi = RSSI_OFFSET_HF + Read( REG_LR_RSSIVALUE );
+ }
+ else
+ {
+ rssi = RSSI_OFFSET_LF + Read( REG_LR_RSSIVALUE );
+ }
+ break;
+ default:
+ rssi = -1;
+ break;
+ }
+ return rssi;
+}
+
+void InAir::SetOpMode( uint8_t opMode )
+{
+ if( opMode != previousOpMode )
+ {
+ previousOpMode = opMode;
+ if( opMode == RF_OPMODE_SLEEP )
+ {
+ //SetAntSwLowPower( true );
+ }
+ else
+ {
+ //SetAntSwLowPower( false );
+ }
+ Write( REG_OPMODE, ( Read( REG_OPMODE ) & RF_OPMODE_MASK ) | opMode );
+ }
+}
+
+void InAir::SetModem( ModemType modem )
+{
+ if( this->settings.Modem != modem )
+ {
+ this->settings.Modem = modem;
+ switch( this->settings.Modem )
+ {
+ default:
+ case MODEM_FSK:
+ SetOpMode( RF_OPMODE_SLEEP );
+ Write( REG_OPMODE, ( Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_MASK ) | RFLR_OPMODE_LONGRANGEMODE_OFF );
+
+ Write( REG_DIOMAPPING1, 0x00 );
+ Write( REG_DIOMAPPING2, 0x30 ); // DIO5=ModeReady
+ break;
+ case MODEM_LORA:
+ SetOpMode( RF_OPMODE_SLEEP );
+ Write( REG_OPMODE, ( Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_MASK ) | RFLR_OPMODE_LONGRANGEMODE_ON );
+ Write( 0x30, 0x00 ); // IF = 0
+ Write( REG_LR_DETECTOPTIMIZE, ( Read( REG_LR_DETECTOPTIMIZE ) & 0x7F ) ); // Manual IF
+ Write( REG_DIOMAPPING1, 0x00 );
+ Write( REG_DIOMAPPING2, 0x00 );
+ break;
+ }
+ }
+}
+
+void InAir::OnTimeoutIrq( void )
+{
+ switch( this->settings.State )
+ {
+ case RX_DONE:
+ if( this->settings.Modem == MODEM_FSK )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ this->settings.FskPacketHandler.PreambleDetected = false;
+ this->settings.FskPacketHandler.SyncWordDetected = false;
+ this->settings.FskPacketHandler.NbBytes = 0;
+ this->settings.FskPacketHandler.Size = 0;
+
+ // Clear Irqs
+ Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
+ RF_IRQFLAGS1_PREAMBLEDETECT |
+ RF_IRQFLAGS1_SYNCADDRESSMATCH );
+ Write( REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN );
+
+ if( this->settings.Fsk.RxContinuous == true )
+ {
+ // Continuous mode restart Rx chain
+ Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
+ }
+ else
+ {
+ this->settings.State = IDLE;
+ rxTimeoutSyncWord.detach( );
+ }
+#endif //#if (INAIR_ENABLE_FSK==1)
+ }
+ if( ( rxTimeout != NULL ) )
+ {
+ rxTimeout( );
+ }
+ break;
+ case TX_DONE:
+ this->settings.State = IDLE;
+ if( ( txTimeout != NULL ) )
+ {
+ txTimeout( );
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void InAir::OnDio0Irq( void )
+{
+ __IO uint8_t irqFlags = 0;
+
+ switch( this->settings.State )
+ {
+ case RX_DONE:
+ //TimerStop( &RxTimeoutTimer );
+ // RxDone interrupt
+ switch( this->settings.Modem )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ case MODEM_FSK:
+ if( this->settings.Fsk.CrcOn == true )
+ {
+ irqFlags = Read( REG_IRQFLAGS2 );
+ if( ( irqFlags & RF_IRQFLAGS2_CRCOK ) != RF_IRQFLAGS2_CRCOK )
+ {
+ // Clear Irqs
+ Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
+ RF_IRQFLAGS1_PREAMBLEDETECT |
+ RF_IRQFLAGS1_SYNCADDRESSMATCH );
+ Write( REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN );
+
+ if( this->settings.Fsk.RxContinuous == false )
+ {
+ this->settings.State = IDLE;
+ rxTimeoutSyncWord.attach_us( this, &InAir::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
+ ( ( Read( REG_SYNCCONFIG ) &
+ ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
+ 1.0 ) + 1.0 ) /
+ ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
+ }
+ else
+ {
+ // Continuous mode restart Rx chain
+ Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
+ }
+ rxTimeoutTimer.detach( );
+
+ if( ( rxError != NULL ) )
+ {
+ rxError( );
+ }
+ this->settings.FskPacketHandler.PreambleDetected = false;
+ this->settings.FskPacketHandler.SyncWordDetected = false;
+ this->settings.FskPacketHandler.NbBytes = 0;
+ this->settings.FskPacketHandler.Size = 0;
+ break;
+ }
+ }
+
+ // Read received packet size
+ if( ( this->settings.FskPacketHandler.Size == 0 ) && ( this->settings.FskPacketHandler.NbBytes == 0 ) )
+ {
+ if( this->settings.Fsk.FixLen == false )
+ {
+ ReadFifo( ( uint8_t* )&this->settings.FskPacketHandler.Size, 1 );
+ }
+ else
+ {
+ this->settings.FskPacketHandler.Size = Read( REG_PAYLOADLENGTH );
+ }
+ ReadFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ this->settings.FskPacketHandler.NbBytes += ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ }
+ else
+ {
+ ReadFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ this->settings.FskPacketHandler.NbBytes += ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ }
+
+ if( this->settings.Fsk.RxContinuous == false )
+ {
+ this->settings.State = IDLE;
+ rxTimeoutSyncWord.attach_us( this, &InAir::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
+ ( ( Read( REG_SYNCCONFIG ) &
+ ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
+ 1.0 ) + 1.0 ) /
+ ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
+ }
+ else
+ {
+ // Continuous mode restart Rx chain
+ Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
+ }
+ rxTimeoutTimer.detach( );
+
+ if( (rxDone != NULL ) )
+ {
+ rxDone( rxBuffer, this->settings.FskPacketHandler.Size, this->settings.FskPacketHandler.RssiValue, 0 );
+ }
+ this->settings.FskPacketHandler.PreambleDetected = false;
+ this->settings.FskPacketHandler.SyncWordDetected = false;
+ this->settings.FskPacketHandler.NbBytes = 0;
+ this->settings.FskPacketHandler.Size = 0;
+ break;
+#endif //#if (INAIR_ENABLE_FSK==1)
+ case MODEM_LORA:
+ {
+ uint8_t snr = 0;
+
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_RXDONE );
+
+ irqFlags = Read( REG_LR_IRQFLAGS );
+ if( ( irqFlags & RFLR_IRQFLAGS_PAYLOADCRCERROR_MASK ) == RFLR_IRQFLAGS_PAYLOADCRCERROR )
+ {
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_PAYLOADCRCERROR );
+
+ if( this->settings.LoRa.RxContinuous == false )
+ {
+ this->settings.State = IDLE;
+ }
+ rxTimeoutTimer.detach( );
+
+ if( ( rxError != NULL ) )
+ {
+ rxError( );
+ }
+ break;
+ }
+
+ this->settings.LoRaPacketHandler.SnrValue = Read( REG_LR_PKTSNRVALUE );
+ if( this->settings.LoRaPacketHandler.SnrValue & 0x80 ) // The SNR sign bit is 1
+ {
+ // Invert and divide by 4
+ snr = ( ( ~this->settings.LoRaPacketHandler.SnrValue + 1 ) & 0xFF ) >> 2;
+ snr = -snr;
+ }
+ else
+ {
+ // Divide by 4
+ snr = ( this->settings.LoRaPacketHandler.SnrValue & 0xFF ) >> 2;
+ }
+
+ int16_t rssi = Read( REG_LR_PKTRSSIVALUE );
+ if( this->settings.LoRaPacketHandler.SnrValue < 0 )
+ {
+ if( this->settings.Channel > RF_MID_BAND_THRESH )
+ {
+ this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_HF + rssi + ( rssi >> 4 ) +
+ snr;
+ }
+ else
+ {
+ this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_LF + rssi + ( rssi >> 4 ) +
+ snr;
+ }
+ }
+ else
+ {
+ if( this->settings.Channel > RF_MID_BAND_THRESH )
+ {
+ this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_HF + rssi + ( rssi >> 4 );
+ }
+ else
+ {
+ this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_LF + rssi + ( rssi >> 4 );
+ }
+ }
+
+ this->settings.LoRaPacketHandler.Size = Read( REG_LR_RXNBBYTES );
+ ReadFifo( rxBuffer, this->settings.LoRaPacketHandler.Size );
+
+ if( this->settings.LoRa.RxContinuous == false )
+ {
+ this->settings.State = IDLE;
+ }
+ rxTimeoutTimer.detach( );
+
+ if( ( rxDone != NULL ) )
+ {
+ rxDone( rxBuffer, this->settings.LoRaPacketHandler.Size, this->settings.LoRaPacketHandler.RssiValue, this->settings.LoRaPacketHandler.SnrValue );
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ case TX_DONE:
+ txTimeoutTimer.detach( );
+ // TxDone interrupt
+ switch( this->settings.Modem )
+ {
+ case MODEM_LORA:
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_TXDONE );
+ // Intentional fall through
+ case MODEM_FSK:
+ default:
+ this->settings.State = IDLE;
+ if( ( txDone != NULL ) )
+ {
+ txDone( );
+ }
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void InAir::OnDio1Irq( void )
+{
+ switch( this->settings.State )
+ {
+ case RX_DONE:
+ switch( this->settings.Modem )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ case MODEM_FSK:
+ // FifoLevel interrupt
+ // Read received packet size
+ if( ( this->settings.FskPacketHandler.Size == 0 ) && ( this->settings.FskPacketHandler.NbBytes == 0 ) )
+ {
+ if( this->settings.Fsk.FixLen == false )
+ {
+ ReadFifo( ( uint8_t* )&this->settings.FskPacketHandler.Size, 1 );
+ }
+ else
+ {
+ this->settings.FskPacketHandler.Size = Read( REG_PAYLOADLENGTH );
+ }
+ }
+
+ if( ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes ) > this->settings.FskPacketHandler.FifoThresh )
+ {
+ ReadFifo( ( rxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.FifoThresh );
+ this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.FifoThresh;
+ }
+ else
+ {
+ ReadFifo( ( rxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ this->settings.FskPacketHandler.NbBytes += ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ }
+ break;
+#endif //#if (INAIR_ENABLE_FSK==1)
+ case MODEM_LORA:
+ // Sync time out
+ rxTimeoutTimer.detach( );
+ this->settings.State = IDLE;
+ if( ( rxTimeout != NULL ) )
+ {
+ rxTimeout( );
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ case TX_DONE:
+ switch( this->settings.Modem )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ case MODEM_FSK:
+ // FifoLevel interrupt
+ if( ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes ) > this->settings.FskPacketHandler.ChunkSize )
+ {
+ WriteFifo( ( rxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.ChunkSize );
+ this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.ChunkSize;
+ }
+ else
+ {
+ // Write the last chunk of data
+ WriteFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes;
+ }
+ break;
+#endif //#if (INAIR_ENABLE_FSK==1)
+ case MODEM_LORA:
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void InAir::OnDio2Irq( void )
+{
+ switch( this->settings.State )
+ {
+ case RX_DONE:
+ switch( this->settings.Modem )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ case MODEM_FSK:
+ if( ( this->settings.FskPacketHandler.PreambleDetected == true ) && ( this->settings.FskPacketHandler.SyncWordDetected == false ) )
+ {
+ rxTimeoutSyncWord.detach( );
+
+ this->settings.FskPacketHandler.SyncWordDetected = true;
+
+ this->settings.FskPacketHandler.RssiValue = -( Read( REG_RSSIVALUE ) >> 1 );
+
+ this->settings.FskPacketHandler.AfcValue = ( int32_t )( double )( ( ( uint16_t )Read( REG_AFCMSB ) << 8 ) |
+ ( uint16_t )Read( REG_AFCLSB ) ) *
+ ( double )FREQ_STEP;
+ this->settings.FskPacketHandler.RxGain = ( Read( REG_LNA ) >> 5 ) & 0x07;
+ }
+ break;
+#endif //#if (INAIR_ENABLE_FSK==1)
+ case MODEM_LORA:
+ if( this->settings.LoRa.FreqHopOn == true )
+ {
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL );
+
+ if( ( fhssChangeChannel != NULL ) )
+ {
+ fhssChangeChannel( ( Read( REG_LR_HOPCHANNEL ) & RFLR_HOPCHANNEL_CHANNEL_MASK ) );
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ case TX_DONE:
+ switch( this->settings.Modem )
+ {
+ case MODEM_FSK:
+ break;
+ case MODEM_LORA:
+ if( this->settings.LoRa.FreqHopOn == true )
+ {
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL );
+
+ if( ( fhssChangeChannel != NULL ) )
+ {
+ fhssChangeChannel( ( Read( REG_LR_HOPCHANNEL ) & RFLR_HOPCHANNEL_CHANNEL_MASK ) );
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void InAir::OnDio3Irq( void )
+{
+ switch( this->settings.Modem )
+ {
+ case MODEM_FSK:
+ break;
+ case MODEM_LORA:
+ if( ( Read( REG_LR_IRQFLAGS ) & 0x01 ) == 0x01 )
+ {
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_CADDETECTED_MASK | RFLR_IRQFLAGS_CADDONE);
+ if( ( cadDone != NULL ) )
+ {
+ cadDone( true );
+ }
+ }
+ else
+ {
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_CADDONE );
+ if( ( cadDone != NULL ) )
+ {
+ cadDone( false );
+ }
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+/*
+void InAir::OnDio4Irq( void )
+{
+ switch( this->settings.Modem )
+ {
+#if (INAIR_ENABLE_FSK==1)
+ case MODEM_FSK:
+ {
+ if( this->settings.FskPacketHandler.PreambleDetected == false )
+ {
+ this->settings.FskPacketHandler.PreambleDetected = true;
+ }
+ }
+ break;
+#endif //#if (INAIR_ENABLE_FSK==1)
+ case MODEM_LORA:
+ break;
+ default:
+ break;
+ }
+}
+
+void InAir::OnDio5Irq( void )
+{
+ switch( this->settings.Modem )
+ {
+ case MODEM_FSK:
+ break;
+ case MODEM_LORA:
+ break;
+ default:
+ break;
+ }
+}
+*/
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+void InAir::Reset( void )
+{
+ reset.output();
+ reset = 0;
+ wait_ms( 1 );
+ reset.input();
+ wait_ms( 6 );
+}
+
+void InAir::Write( uint8_t addr, uint8_t data )
+{
+ Write( addr, &data, 1 );
+}
+
+uint8_t InAir::Read( uint8_t addr )
+{
+ uint8_t data;
+ Read( addr, &data, 1 );
+ return data;
+}
+
+void InAir::Write( uint8_t addr, uint8_t *buffer, uint8_t size )
+{
+ uint8_t i;
+
+ nss = 0;
+ spi.write( addr | 0x80 );
+ for( i = 0; i < size; i++ )
+ {
+ spi.write( buffer[i] );
+ }
+ nss = 1;
+}
+
+void InAir::Read( uint8_t addr, uint8_t *buffer, uint8_t size )
+{
+ uint8_t i;
+
+ nss = 0;
+ spi.write( addr & 0x7F );
+ for( i = 0; i < size; i++ )
+ {
+ buffer[i] = spi.write( 0 );
+ }
+ nss = 1;
+}
+
+void InAir::WriteFifo( uint8_t *buffer, uint8_t size )
+{
+ Write( 0, buffer, size );
+}
+
+void InAir::ReadFifo( uint8_t *buffer, uint8_t size )
+{
+ Read( 0, buffer, size );
+}
+
+
+//-------------------------------------------------------------------------
+// Board relative functions
+//-------------------------------------------------------------------------
+
+void InAir::IoInit( void )
+{
+ SpiInit( );
+}
+
+static const RadioRegisters_t RadioRegsInit[] =
+{
+ { MODEM_FSK , REG_LNA , 0x23 },
+ { MODEM_FSK , REG_RXCONFIG , 0x1E },
+ { MODEM_FSK , REG_RSSICONFIG , 0xD2 },
+ { MODEM_FSK , REG_PREAMBLEDETECT , 0xAA },
+ { MODEM_FSK , REG_OSC , 0x07 },
+ { MODEM_FSK , REG_SYNCCONFIG , 0x12 },
+ { MODEM_FSK , REG_SYNCVALUE1 , 0xC1 },
+ { MODEM_FSK , REG_SYNCVALUE2 , 0x94 },
+ { MODEM_FSK , REG_SYNCVALUE3 , 0xC1 },
+ { MODEM_FSK , REG_PACKETCONFIG1 , 0xD8 },
+ { MODEM_FSK , REG_FIFOTHRESH , 0x8F },
+ { MODEM_FSK , REG_IMAGECAL , 0x02 },
+ { MODEM_FSK , REG_DIOMAPPING1 , 0x00 },
+ { MODEM_FSK , REG_DIOMAPPING2 , 0x30 },
+ { MODEM_LORA, REG_LR_PAYLOADMAXLENGTH, 0x40 },
+};
+
+void InAir::RadioRegistersInit( ) {
+ uint8_t i = 0;
+ for( i = 0; i < sizeof( RadioRegsInit ) / sizeof( RadioRegisters_t ); i++ )
+ {
+ SetModem( RadioRegsInit[i].Modem );
+ Write( RadioRegsInit[i].Addr, RadioRegsInit[i].Value );
+ }
+}
+
+void InAir::SpiInit( void )
+{
+ nss = 1;
+ spi.format( 8,0 );
+ uint32_t frequencyToSet = 8000000;
+ #if( defined ( TARGET_NUCLEO_L152RE ) || defined (TARGET_NUCLEO_F401RE) || defined ( TARGET_LPC11U6X ) || defined (TARGET_K64F) || defined ( TARGET_NZ32ST1L ) || defined(TARGET_NZ32SC151) )
+ spi.frequency( frequencyToSet );
+ #elif( defined ( TARGET_KL25Z ) ) //busclock frequency is halved -> double the spi frequency to compensate
+ spi.frequency( frequencyToSet * 2 );
+ #else
+ #warning "Check the board's SPI frequency"
+ #endif
+ wait(0.1);
+}
+
+void InAir::IoIrqInit()
+{
+ //TARGET_KL25Z board does not have pulldown resistors, seems like TARGET_K64F does have them
+ #if( defined ( TARGET_NUCLEO_L152RE ) || defined (TARGET_NUCLEO_F401RE) || defined ( TARGET_LPC11U6X ) || defined (TARGET_K64F) || defined ( TARGET_NZ32ST1L ) || defined(TARGET_NZ32SC151))
+ dio0.mode(PullDown);
+ dio1.mode(PullDown);
+ dio2.mode(PullDown);
+ dio3.mode(PullDown);
+ #endif
+#if(INAIR_DIO0_IS_INTERRUPT==1)
+ dio0.rise(this, &InAir::OnDio0Irq);
+#endif
+#if(INAIR_DIO1_IS_INTERRUPT==1)
+ dio1.rise( this, &InAir::OnDio1Irq);
+#endif
+#if(INAIR_DIO2_IS_INTERRUPT==1)
+ dio2.rise( this, &InAir::OnDio2Irq);
+#endif
+#if(INAIR_DIO3_IS_INTERRUPT==1)
+ dio3.rise( this, &InAir::OnDio3Irq);
+#endif
+}
+
+void InAir::IoDeInit( void )
+{
+ //nothing
+}
+
+uint8_t InAir::GetPaSelect( uint32_t channel )
+{
+ if(boardConnected == BOARD_INAIR9B) {
+ return RF_PACONFIG_PASELECT_PABOOST;
+ }
+ else {
+ return RF_PACONFIG_PASELECT_RFO;
+ }
+}
+
+bool InAir::CheckRfFrequency( uint32_t frequency )
+{
+ //TODO: Implement check, currently all frequencies are supported
+ return true;
+}