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SX126x.cpp
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SX126x.cpp
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/*
This file is part of SX126x Portable driver.
Copyright (C) 2020 ReimuNotMoe
This program is based on sx126x-driver from Semtech S.A.,
see LICENSE-SEMTECH.txt for details.
Original maintainer of sx126x-driver: Miguel Luis, Gregory Cristian
and Matthieu Verdy
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "SX126x.hpp"
void SX126x::Init( void ){
Reset();
Wakeup();
SetStandby(STDBY_RC);
OperatingMode = MODE_STDBY_RC;
SetPacketType( PACKET_TYPE_LORA );
}
SX126x::RadioOperatingModes_t SX126x::GetOperatingMode( void )
{
return OperatingMode;
}
void SX126x::CheckDeviceReady( void )
{
if( ( GetOperatingMode( ) == MODE_SLEEP ) || ( GetOperatingMode( ) == MODE_RX_DC ) )
{
Wakeup( );
}
}
void SX126x::SetPayload( uint8_t *payload, uint8_t size )
{
WriteBuffer( 0x00, payload, size );
}
uint8_t SX126x::GetPayload( uint8_t *buffer, uint8_t *size, uint8_t maxSize )
{
uint8_t offset = 0;
GetRxBufferStatus( size, &offset );
if( *size > maxSize )
{
return 1;
}
ReadBuffer( offset, buffer, *size );
return 0;
}
void SX126x::SendPayload( uint8_t *payload, uint8_t size, uint32_t timeout )
{
SetPayload( payload, size );
SetTx( timeout );
}
uint8_t SX126x::SetSyncWord( uint8_t *syncWord )
{
WriteRegister( REG_LR_SYNCWORDBASEADDRESS, syncWord, 8 );
return 0;
}
void SX126x::SetCrcSeed( uint16_t seed )
{
uint8_t buf[2];
buf[0] = ( uint8_t )( ( seed >> 8 ) & 0xFF );
buf[1] = ( uint8_t )( seed & 0xFF );
switch( GetPacketType( ) )
{
case PACKET_TYPE_GFSK:
WriteRegister( REG_LR_CRCSEEDBASEADDR, buf, 2 );
break;
default:
break;
}
}
void SX126x::SetCrcPolynomial( uint16_t polynomial )
{
uint8_t buf[2];
buf[0] = ( uint8_t )( ( polynomial >> 8 ) & 0xFF );
buf[1] = ( uint8_t )( polynomial & 0xFF );
switch( GetPacketType( ) )
{
case PACKET_TYPE_GFSK:
WriteRegister( REG_LR_CRCPOLYBASEADDR, buf, 2 );
break;
default:
break;
}
}
void SX126x::SetWhiteningSeed( uint16_t seed )
{
uint8_t regValue = 0;
switch( GetPacketType( ) )
{
case PACKET_TYPE_GFSK:
regValue = ReadReg( REG_LR_WHITSEEDBASEADDR_MSB ) & 0xFE;
regValue = ( ( seed >> 8 ) & 0x01 ) | regValue;
WriteReg( REG_LR_WHITSEEDBASEADDR_MSB, regValue ); // only 1 bit.
WriteReg( REG_LR_WHITSEEDBASEADDR_LSB, ( uint8_t )seed );
break;
default:
break;
}
}
uint32_t SX126x::GetRandom( void )
{
uint8_t buf[] = { 0, 0, 0, 0 };
// Set radio in continuous reception
SetRx(0);
std::this_thread::sleep_for(std::chrono::milliseconds(1));
ReadRegister( RANDOM_NUMBER_GENERATORBASEADDR, buf, 4 );
SetStandby( STDBY_RC );
return ( buf[0] << 24 ) | ( buf[1] << 16 ) | ( buf[2] << 8 ) | buf[3];
}
void SX126x::SetSleep( SleepParams_t sleepConfig )
{
std::lock_guard<std::mutex> lg(IOLock2);
#ifdef ADV_DEBUG
printf("SetSleep ");
#endif
WriteCommand( RADIO_SET_SLEEP, &sleepConfig.Value, 1 );
OperatingMode = MODE_SLEEP;
}
void SX126x::SetStandby( RadioStandbyModes_t standbyConfig )
{
std::lock_guard<std::mutex> lg(IOLock2);
#ifdef ADV_DEBUG
printf("SetStandby ");
#endif
WriteCommand( RADIO_SET_STANDBY, ( uint8_t* )&standbyConfig, 1 );
if( standbyConfig == STDBY_RC )
{
OperatingMode = MODE_STDBY_RC;
}
else
{
OperatingMode = MODE_STDBY_XOSC;
}
}
void SX126x::SetFs( void )
{
std::lock_guard<std::mutex> lg(IOLock2);
#ifdef ADV_DEBUG
printf("SetFs ");
#endif
WriteCommand( RADIO_SET_FS, 0, 0 );
OperatingMode = MODE_FS;
}
void SX126x::SetTx( uint32_t timeout )
{
std::lock_guard<std::mutex> lg(IOLock2);
uint8_t buf[3];
OperatingMode = MODE_TX;
#ifdef ADV_DEBUG
printf("SetTx ");
#endif
buf[0] = ( uint8_t )( ( timeout >> 16 ) & 0xFF );
buf[1] = ( uint8_t )( ( timeout >> 8 ) & 0xFF );
buf[2] = ( uint8_t )( timeout & 0xFF );
HalPostRx();
HalPreTx();
WriteCommand( RADIO_SET_TX, buf, 3 );
}
void SX126x::SetRxBoosted( uint32_t timeout )
{
std::lock_guard<std::mutex> lg(IOLock2);
uint8_t buf[3];
OperatingMode = MODE_RX;
#ifdef ADV_DEBUG
printf("SetRxBoosted ");
#endif
WriteReg( REG_RX_GAIN, 0x96 ); // max LNA gain, increase current by ~2mA for around ~3dB in sensivity
buf[0] = ( uint8_t )( ( timeout >> 16 ) & 0xFF );
buf[1] = ( uint8_t )( ( timeout >> 8 ) & 0xFF );
buf[2] = ( uint8_t )( timeout & 0xFF );
HalPostTx();
HalPreRx();
WriteCommand( RADIO_SET_RX, buf, 3 );
}
void SX126x::SetRx( uint32_t timeout )
{
std::lock_guard<std::mutex> lg(IOLock2);
uint8_t buf[3];
OperatingMode = MODE_RX;
#ifdef ADV_DEBUG
printf("SetRx ");
#endif
buf[0] = ( uint8_t )( ( timeout >> 16 ) & 0xFF );
buf[1] = ( uint8_t )( ( timeout >> 8 ) & 0xFF );
buf[2] = ( uint8_t )( timeout & 0xFF );
HalPostTx();
HalPreRx();
WriteCommand( RADIO_SET_RX, buf, 3 );
}
void SX126x::SetRxDutyCycle( uint32_t rxTime, uint32_t sleepTime )
{
std::lock_guard<std::mutex> lg(IOLock2);
uint8_t buf[6];
buf[0] = ( uint8_t )( ( rxTime >> 16 ) & 0xFF );
buf[1] = ( uint8_t )( ( rxTime >> 8 ) & 0xFF );
buf[2] = ( uint8_t )( rxTime & 0xFF );
buf[3] = ( uint8_t )( ( sleepTime >> 16 ) & 0xFF );
buf[4] = ( uint8_t )( ( sleepTime >> 8 ) & 0xFF );
buf[5] = ( uint8_t )( sleepTime & 0xFF );
HalPostTx();
HalPreRx();
WriteCommand( RADIO_SET_RXDUTYCYCLE, buf, 6 );
OperatingMode = MODE_RX_DC;
}
void SX126x::SetCad( void )
{
std::lock_guard<std::mutex> lg(IOLock2);
HalPostTx();
HalPreRx();
WriteCommand( RADIO_SET_CAD, 0, 0 );
OperatingMode = MODE_CAD;
}
void SX126x::SetTxContinuousWave( void )
{
std::lock_guard<std::mutex> lg(IOLock2);
#ifdef ADV_DEBUG
printf("SetTxContinuousWave ");
#endif
HalPostRx();
HalPreTx();
WriteCommand( RADIO_SET_TXCONTINUOUSWAVE, 0, 0 );
}
void SX126x::SetTxInfinitePreamble( void )
{
std::lock_guard<std::mutex> lg(IOLock2);
#ifdef ADV_DEBUG
printf("SetTxContinuousPreamble ");
#endif
HalPostRx();
HalPreTx();
WriteCommand( RADIO_SET_TXCONTINUOUSPREAMBLE, 0, 0 );
}
void SX126x::SetStopRxTimerOnPreambleDetect( bool enable )
{
WriteCommand( RADIO_SET_STOPRXTIMERONPREAMBLE, ( uint8_t* )&enable, 1 );
}
void SX126x::SetLoRaSymbNumTimeout( uint8_t SymbNum )
{
WriteCommand( RADIO_SET_LORASYMBTIMEOUT, &SymbNum, 1 );
}
void SX126x::SetRegulatorMode( RadioRegulatorMode_t mode )
{
#ifdef ADV_DEBUG
printf("SetRegulatorMode ");
#endif
WriteCommand( RADIO_SET_REGULATORMODE, ( uint8_t* )&mode, 1 );
}
void SX126x::Calibrate( CalibrationParams_t calibParam )
{
WriteCommand( RADIO_CALIBRATE, &calibParam.Value, 1 );
}
void SX126x::CalibrateImage( uint32_t freq )
{
uint8_t calFreq[2];
if( freq > 900000000 )
{
calFreq[0] = 0xE1;
calFreq[1] = 0xE9;
}
else if( freq > 850000000 )
{
calFreq[0] = 0xD7;
calFreq[1] = 0xD8;
}
else if( freq > 770000000 )
{
calFreq[0] = 0xC1;
calFreq[1] = 0xC5;
}
else if( freq > 460000000 )
{
calFreq[0] = 0x75;
calFreq[1] = 0x81;
}
else if( freq > 425000000 )
{
calFreq[0] = 0x6B;
calFreq[1] = 0x6F;
}
WriteCommand( RADIO_CALIBRATEIMAGE, calFreq, 2 );
}
void SX126x::SetPaConfig( uint8_t paDutyCycle, uint8_t HpMax, uint8_t deviceSel, uint8_t paLUT )
{
uint8_t buf[4];
#ifdef ADV_DEBUG
printf("SetPaConfig ");
#endif
buf[0] = paDutyCycle;
buf[1] = HpMax;
buf[2] = deviceSel;
buf[3] = paLUT;
WriteCommand( RADIO_SET_PACONFIG, buf, 4 );
}
void SX126x::SetRxTxFallbackMode( uint8_t fallbackMode )
{
WriteCommand( RADIO_SET_TXFALLBACKMODE, &fallbackMode, 1 );
}
void SX126x::SetDioIrqParams( uint16_t irqMask, uint16_t dio1Mask, uint16_t dio2Mask, uint16_t dio3Mask )
{
uint8_t buf[8];
#ifdef ADV_DEBUG
printf("SetDioIrqParams ");
#endif
buf[0] = ( uint8_t )( ( irqMask >> 8 ) & 0x00FF );
buf[1] = ( uint8_t )( irqMask & 0x00FF );
buf[2] = ( uint8_t )( ( dio1Mask >> 8 ) & 0x00FF );
buf[3] = ( uint8_t )( dio1Mask & 0x00FF );
buf[4] = ( uint8_t )( ( dio2Mask >> 8 ) & 0x00FF );
buf[5] = ( uint8_t )( dio2Mask & 0x00FF );
buf[6] = ( uint8_t )( ( dio3Mask >> 8 ) & 0x00FF );
buf[7] = ( uint8_t )( dio3Mask & 0x00FF );
WriteCommand( RADIO_CFG_DIOIRQ, buf, 8 );
}
uint16_t SX126x::GetIrqStatus( void )
{
uint8_t irqStatus[2];
ReadCommand( RADIO_GET_IRQSTATUS, irqStatus, 2 );
return ( irqStatus[0] << 8 ) | irqStatus[1];
}
void SX126x::SetDio2AsRfSwitchCtrl( uint8_t enable )
{
#ifdef ADV_DEBUG
printf("SetDio2AsRfSwitchCtrl ");
#endif
WriteCommand( RADIO_SET_RFSWITCHMODE, &enable, 1 );
}
void SX126x::SetDio3AsTcxoCtrl( RadioTcxoCtrlVoltage_t tcxoVoltage, uint32_t timeout )
{
uint8_t buf[4];
buf[0] = tcxoVoltage & 0x07;
buf[1] = ( uint8_t )( ( timeout >> 16 ) & 0xFF );
buf[2] = ( uint8_t )( ( timeout >> 8 ) & 0xFF );
buf[3] = ( uint8_t )( timeout & 0xFF );
WriteCommand( RADIO_SET_TCXOMODE, buf, 4 );
}
void SX126x::SetRfFrequency( uint32_t frequency )
{
uint8_t buf[4];
uint32_t freq = 0;
#ifdef ADV_DEBUG
printf("SetRfFrequency ");
#endif
if( ImageCalibrated == false )
{
CalibrateImage( frequency );
ImageCalibrated = true;
}
freq = ( uint32_t )( ( double )frequency / ( double )FREQ_STEP );
buf[0] = ( uint8_t )( ( freq >> 24 ) & 0xFF );
buf[1] = ( uint8_t )( ( freq >> 16 ) & 0xFF );
buf[2] = ( uint8_t )( ( freq >> 8 ) & 0xFF );
buf[3] = ( uint8_t )( freq & 0xFF );
WriteCommand( RADIO_SET_RFFREQUENCY, buf, 4 );
}
void SX126x::SetPacketType( RadioPacketTypes_t packetType )
{
#ifdef ADV_DEBUG
printf("SetPacketType ");
#endif
// Save packet type internally to avoid questioning the radio
this->PacketType = packetType;
WriteCommand( RADIO_SET_PACKETTYPE, ( uint8_t* )&packetType, 1 );
}
SX126x::RadioPacketTypes_t SX126x::GetPacketType( void )
{
return this->PacketType;
}
void SX126x::SetTxParams(int8_t power, RadioRampTimes_t rampTime)
{
uint8_t buf[2];
#ifdef ADV_DEBUG
printf("SetTxParams ");
#endif
if (DeviceType == SX1261) {
if( power == 15 )
{
SetPaConfig( 0x06, 0x00, 0x01, 0x01 );
}
else
{
SetPaConfig( 0x04, 0x00, 0x01, 0x01 );
}
if( power >= 14 )
{
power = 14;
}
else if( power < -3 )
{
power = -3;
}
WriteReg( REG_OCP, 0x18 ); // current max is 80 mA for the whole device
}
else // sx1262 or sx1268
{
SetPaConfig( 0x04, 0x07, 0x00, 0x01 );
if( power > 22 )
{
power = 22;
}
else if( power < -3 )
{
power = -3;
}
WriteReg( REG_OCP, 0x38 ); // current max 160mA for the whole device
}
buf[0] = power;
buf[1] = (uint8_t)rampTime;
// if( OPT == 0 )
// {
// if( ( uint8_t )rampTime < RADIO_RAMP_200_US )
// {
// buf[1] = RADIO_RAMP_200_US;
// }
// else
// {
// buf[1] = ( uint8_t )rampTime;
// }
// }
// else
// {
// buf[1] = ( uint8_t )rampTime;
// }
WriteCommand( RADIO_SET_TXPARAMS, buf, 2 );
}
void SX126x::SetModulationParams(const ModulationParams_t& modulationParams )
{
uint8_t n;
uint32_t tempVal = 0;
uint8_t buf[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
#ifdef ADV_DEBUG
printf("SetModulationParams ");
#endif
// Check if required configuration corresponds to the stored packet type
// If not, silently update radio packet type
if( this->PacketType != modulationParams.PacketType )
{
this->SetPacketType( modulationParams.PacketType );
}
switch( modulationParams.PacketType )
{
case PACKET_TYPE_GFSK:
n = 8;
tempVal = ( uint32_t )( 32 * ( ( double )XTAL_FREQ / ( double )modulationParams.Params.Gfsk.BitRate ) );
buf[0] = ( tempVal >> 16 ) & 0xFF;
buf[1] = ( tempVal >> 8 ) & 0xFF;
buf[2] = tempVal & 0xFF;
buf[3] = modulationParams.Params.Gfsk.ModulationShaping;
buf[4] = modulationParams.Params.Gfsk.Bandwidth;
tempVal = ( uint32_t )( ( double )modulationParams.Params.Gfsk.Fdev / ( double )FREQ_STEP );
buf[5] = ( tempVal >> 16 ) & 0xFF;
buf[6] = ( tempVal >> 8 ) & 0xFF;
buf[7] = ( tempVal& 0xFF );
break;
case PACKET_TYPE_LORA:
n = 4;
buf[0] = modulationParams.Params.LoRa.SpreadingFactor;
buf[1] = modulationParams.Params.LoRa.Bandwidth;
buf[2] = modulationParams.Params.LoRa.CodingRate;
buf[3] = modulationParams.Params.LoRa.LowDatarateOptimize;
// WORKAROUND - Modulation Quality with 500 kHz LoRa Bandwidth, see DS_SX1261-2_V1.2 datasheet chapter 15.1
if(modulationParams.PacketType == RadioPacketTypes_t::PACKET_TYPE_LORA && modulationParams.Params.LoRa.Bandwidth == RadioLoRaBandwidths_t::LORA_BW_500 )
{
WriteReg(REG_TX_MODULATION, ReadReg(REG_TX_MODULATION) & ~(1 << 2));
}
else
{
WriteReg( REG_TX_MODULATION, ReadReg( REG_TX_MODULATION ) | (1 << 2));
}
break;
default:
case PACKET_TYPE_NONE:
return;
}
WriteCommand( RADIO_SET_MODULATIONPARAMS, buf, n );
CurrentModParams = modulationParams;
}
void SX126x::SetPacketParams(const PacketParams_t& packetParams )
{
uint8_t n;
uint8_t crcVal = 0;
uint8_t buf[9] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
#ifdef ADV_DEBUG
printf("SetPacketParams ");
#endif
// Check if required configuration corresponds to the stored packet type
// If not, silently update radio packet type
if( this->PacketType != packetParams.PacketType )
{
this->SetPacketType( packetParams.PacketType );
}
switch( packetParams.PacketType )
{
case PACKET_TYPE_GFSK:
if( packetParams.Params.Gfsk.CrcLength == RADIO_CRC_2_BYTES_IBM )
{
SetCrcSeed( CRC_IBM_SEED );
SetCrcPolynomial( CRC_POLYNOMIAL_IBM );
crcVal = RADIO_CRC_2_BYTES;
}
else if( packetParams.Params.Gfsk.CrcLength == RADIO_CRC_2_BYTES_CCIT )
{
SetCrcSeed( CRC_CCITT_SEED );
SetCrcPolynomial( CRC_POLYNOMIAL_CCITT );
crcVal = RADIO_CRC_2_BYTES_INV;
}
else
{
crcVal = packetParams.Params.Gfsk.CrcLength;
}
n = 9;
buf[0] = ( packetParams.Params.Gfsk.PreambleLength >> 8 ) & 0xFF;
buf[1] = packetParams.Params.Gfsk.PreambleLength;
buf[2] = packetParams.Params.Gfsk.PreambleMinDetect;
buf[3] = ( packetParams.Params.Gfsk.SyncWordLength << 3 ); // convert from byte to bit
buf[4] = packetParams.Params.Gfsk.AddrComp;
buf[5] = packetParams.Params.Gfsk.HeaderType;
buf[6] = packetParams.Params.Gfsk.PayloadLength;
buf[7] = crcVal;
buf[8] = packetParams.Params.Gfsk.DcFree;
break;
case PACKET_TYPE_LORA:
n = 6;
buf[0] = ( packetParams.Params.LoRa.PreambleLength >> 8 ) & 0xFF;
buf[1] = packetParams.Params.LoRa.PreambleLength;
buf[2] = packetParams.Params.LoRa.HeaderType;
buf[3] = packetParams.Params.LoRa.PayloadLength;
buf[4] = packetParams.Params.LoRa.CrcMode;
buf[5] = packetParams.Params.LoRa.InvertIQ;
// WORKAROUND - Optimizing the Inverted IQ Operation, see DS_SX1261-2_V1.2 datasheet chapter 15.4
if(packetParams.Params.LoRa.InvertIQ == RadioLoRaIQModes_t::LORA_IQ_INVERTED)
{
WriteReg(REG_IQ_POLARITY, ReadReg(REG_IQ_POLARITY) & ~(1 << 2));
}
else
{
WriteReg(REG_IQ_POLARITY, ReadReg(REG_IQ_POLARITY) | ( 1 << 2 ));
}
break;
default:
case PACKET_TYPE_NONE:
return;
}
WriteCommand( RADIO_SET_PACKETPARAMS, buf, n );
CurrentPacketParams = packetParams;
}
void SX126x::SetCadParams( RadioLoRaCadSymbols_t cadSymbolNum, uint8_t cadDetPeak, uint8_t cadDetMin, RadioCadExitModes_t cadExitMode, uint32_t cadTimeout )
{
uint8_t buf[7];
buf[0] = ( uint8_t )cadSymbolNum;
buf[1] = cadDetPeak;
buf[2] = cadDetMin;
buf[3] = ( uint8_t )cadExitMode;
buf[4] = ( uint8_t )( ( cadTimeout >> 16 ) & 0xFF );
buf[5] = ( uint8_t )( ( cadTimeout >> 8 ) & 0xFF );
buf[6] = ( uint8_t )( cadTimeout & 0xFF );
WriteCommand( RADIO_SET_CADPARAMS, buf, 7 );
OperatingMode = MODE_CAD;
}
void SX126x::SetBufferBaseAddresses( uint8_t txBaseAddress, uint8_t rxBaseAddress )
{
uint8_t buf[2];
#ifdef ADV_DEBUG
printf("SetBufferBaseAddresses ");
#endif
buf[0] = txBaseAddress;
buf[1] = rxBaseAddress;
WriteCommand( RADIO_SET_BUFFERBASEADDRESS, buf, 2 );
}
SX126x::RadioStatus_t SX126x::GetStatus( void )
{
uint8_t stat = 0;
RadioStatus_t status;
ReadCommand( RADIO_GET_STATUS, ( uint8_t * )&stat, 1 );
status.Value = stat;
return status;
}
int8_t SX126x::GetRssiInst( void )
{
uint8_t rssi;
ReadCommand( RADIO_GET_RSSIINST, ( uint8_t* )&rssi, 1 );
return( -( rssi / 2 ) );
}
void SX126x::GetRxBufferStatus( uint8_t *payloadLength, uint8_t *rxStartBufferPointer )
{
uint8_t status[2];
ReadCommand( RADIO_GET_RXBUFFERSTATUS, status, 2 );
// In case of LORA fixed header, the payloadLength is obtained by reading
// the register REG_LR_PAYLOADLENGTH
if( ( this->GetPacketType( ) == PACKET_TYPE_LORA ) && ( ReadReg( REG_LR_PACKETPARAMS ) >> 7 == 1 ) )
{
*payloadLength = ReadReg( REG_LR_PAYLOADLENGTH );
}
else
{
*payloadLength = status[0];
}
*rxStartBufferPointer = status[1];
}
void SX126x::GetPacketStatus( PacketStatus_t *pktStatus )
{
uint8_t status[3];
ReadCommand( RADIO_GET_PACKETSTATUS, status, 3 );
pktStatus->packetType = this -> GetPacketType( );
switch( pktStatus->packetType )
{
case PACKET_TYPE_GFSK:
pktStatus->Params.Gfsk.RxStatus = status[0];
pktStatus->Params.Gfsk.RssiSync = -status[1] / 2;
pktStatus->Params.Gfsk.RssiAvg = -status[2] / 2;
pktStatus->Params.Gfsk.FreqError = 0;
break;
case PACKET_TYPE_LORA:
pktStatus->Params.LoRa.RssiPkt = -status[0] / 2;
( status[1] < 128 ) ? ( pktStatus->Params.LoRa.SnrPkt = status[1] / 4 ) : ( pktStatus->Params.LoRa.SnrPkt = ( ( status[1] - 256 ) /4 ) );
pktStatus->Params.LoRa.SignalRssiPkt = -status[2] / 2;
pktStatus->Params.LoRa.FreqError = FrequencyError;
break;
default:
case PACKET_TYPE_NONE:
// In that specific case, we set everything in the pktStatus to zeros
// and reset the packet type accordingly
memset( pktStatus, 0, sizeof( PacketStatus_t ) );
pktStatus->packetType = PACKET_TYPE_NONE;
break;
}
}
SX126x::RadioError_t SX126x::GetDeviceErrors( void ) {
RadioError_t error;
ReadCommand( RADIO_GET_ERROR, ( uint8_t * )&error, 2 );
return error;
}
void SX126x::ClearIrqStatus( uint16_t irq )
{
uint8_t buf[2];
#ifdef ADV_DEBUG
printf("ClearIrqStatus ");
#endif
buf[0] = ( uint8_t )( ( ( uint16_t )irq >> 8 ) & 0x00FF );
buf[1] = ( uint8_t )( ( uint16_t )irq & 0x00FF );
WriteCommand( RADIO_CLR_IRQSTATUS, buf, 2 );
}
void SX126x::ProcessIrqs() {
std::unique_lock<std::mutex> lg(IOLock2);
uint16_t irqRegs = GetIrqStatus( );
ClearIrqStatus( IRQ_RADIO_ALL );
lg.unlock();
#ifdef ADV_DEBUG
printf("0x%04x\n\r", irqRegs );
#endif
auto& txDone = callbacks.txDone;
auto& rxDone = callbacks.rxDone;
auto& rxSyncWordDone = callbacks.rxSyncWordDone;
auto& rxHeaderDone = callbacks.rxHeaderDone;
auto& txTimeout = callbacks.txTimeout;
auto& rxTimeout = callbacks.rxTimeout;
auto& rxError = callbacks.rxError;
auto& cadDone = callbacks.cadDone;
if( ( irqRegs & IRQ_HEADER_VALID ) == IRQ_HEADER_VALID )
{
// LoRa Only
// FrequencyError = 0x000000 | ( ( 0x0F & ReadReg( REG_FREQUENCY_ERRORBASEADDR ) ) << 16 );
// FrequencyError = FrequencyError | ( ReadReg( REG_FREQUENCY_ERRORBASEADDR + 1 ) << 8 );
// FrequencyError = FrequencyError | ( ReadReg( REG_FREQUENCY_ERRORBASEADDR + 2 ) );
if (rxHeaderDone)
rxHeaderDone();
}
if( ( irqRegs & IRQ_TX_DONE ) == IRQ_TX_DONE )
{
HalPostTx();
if (txDone)
txDone();
}
if( ( irqRegs & IRQ_RX_DONE ) == IRQ_RX_DONE )
{
if( ( irqRegs & IRQ_CRC_ERROR ) == IRQ_CRC_ERROR )
{
if (rxError)
rxError(IRQ_CRC_ERROR_CODE);
}
else
{
if (rxDone)
rxDone();
}
}
if (( irqRegs & IRQ_SYNCWORD_VALID ) == IRQ_SYNCWORD_VALID )
{
if (rxSyncWordDone)
rxSyncWordDone();
}
if( ( irqRegs & IRQ_CAD_DONE ) == IRQ_CAD_DONE ) {
if (cadDone) {
cadDone( ( irqRegs & IRQ_CAD_ACTIVITY_DETECTED ) == IRQ_CAD_ACTIVITY_DETECTED );
}
}
if( ( irqRegs & IRQ_RX_TX_TIMEOUT ) == IRQ_RX_TX_TIMEOUT ) {
if (OperatingMode == MODE_TX) {
HalPostTx();
if (txTimeout)
txTimeout();
} else if (OperatingMode == MODE_TX) {
HalPostRx();
if (rxTimeout)
rxTimeout();
}
}
/*
//IRQ_PREAMBLE_DETECTED = 0x0004,
if( irqRegs & IRQ_PREAMBLE_DETECTED )
{
if( rxPblSyncWordHeader != NULL )
{
rxPblSyncWordHeader( IRQ_PBL_DETECT_CODE);
}
}
//IRQ_SYNCWORD_VALID = 0x0008,
if( irqRegs & IRQ_SYNCWORD_VALID )
{
if( rxPblSyncWordHeader != NULL )
{
rxPblSyncWordHeader( IRQ_SYNCWORD_VALID_CODE );
}
}
//IRQ_HEADER_VALID = 0x0010,
if ( irqRegs & IRQ_HEADER_VALID )
{
if( rxPblSyncWordHeader != NULL )
{
rxPblSyncWordHeader( IRQ_HEADER_VALID_CODE );
}
}
//IRQ_HEADER_ERROR = 0x0020,
if( irqRegs & IRQ_HEADER_ERROR )
{
if( rxError != NULL )
{
rxError( IRQ_HEADER_ERROR_CODE );
}
}
*/
}
void SX126x::HalSpiRead(uint8_t *buffer_in, uint16_t size) {
uint8_t useless[size];
memset(useless, 0, size);
HalSpiTransfer(buffer_in, useless, size);
}
void SX126x::HalSpiWrite(const uint8_t *buffer_out, uint16_t size) {
uint8_t useless[size];
HalSpiTransfer(useless, buffer_out, size);
}
void SX126x::SetNetworkType(SX126x::NetworkType_t nt) {
if (nt == PUBLIC) {
// Change LoRa modem Sync Word for Public Networks
WriteReg(REG_LR_SYNCWORD, (LORA_MAC_PUBLIC_SYNCWORD >> 8) & 0xFF);
WriteReg(REG_LR_SYNCWORD + 1, LORA_MAC_PUBLIC_SYNCWORD & 0xFF);
} else {
WriteReg(REG_LR_SYNCWORD, (LORA_MAC_PRIVATE_SYNCWORD >> 8) & 0xFF);
WriteReg(REG_LR_SYNCWORD + 1, LORA_MAC_PRIVATE_SYNCWORD & 0xFF);
}
}
void SX126x::Reset() {
std::lock_guard<std::mutex> lg(IOLock);
HalGpioWrite(GPIO_PIN_RESET, 0);
std::this_thread::sleep_for(std::chrono::milliseconds(10));
HalGpioWrite(GPIO_PIN_RESET, 1);
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
void SX126x::Wakeup() {
std::lock_guard<std::mutex> lg(IOLock);
if (SX126x_DEBUG) {
printf("SX126x: Wakeup\n");
}
uint8_t buf[2] = {RADIO_GET_STATUS, 0};
HalSpiWrite(buf, 2);
// Wait for chip to be ready.
WaitOnBusyLong();
if (SX126x_DEBUG) {
printf("SX126x: Wakeup done\n");
}
}
void SX126x::WriteCommand(SX126x::RadioCommands_t opcode, uint8_t *buffer, uint16_t size) {
auto *merged_buf = (uint8_t *)alloca(size+1);
merged_buf[0] = opcode;
memcpy(merged_buf+1, buffer, size);
std::lock_guard<std::mutex> lg(IOLock);
if (SX126x_DEBUG) {
printf("SX126x: WriteCommand: 0x%02x %u\n", opcode, size);
}
WaitOnBusy();
HalSpiWrite(merged_buf, size+1);
WaitOnCounter();
}
void SX126x::ReadCommand(SX126x::RadioCommands_t opcode, uint8_t *buffer, uint16_t size) {
std::lock_guard<std::mutex> lg(IOLock);
WaitOnBusy();
auto total_transfer_size = 2+size;
auto *buf_out = (uint8_t *)alloca(total_transfer_size);
auto *buf_in = (uint8_t *)alloca(total_transfer_size);
memset(buf_out, 0, total_transfer_size);
buf_out[0] = opcode;
HalSpiTransfer(buf_in, buf_out, total_transfer_size);
memcpy(buffer, buf_in+2, size);
}
void SX126x::WriteRegister(uint16_t address, uint8_t *buffer, uint16_t size) {
std::lock_guard<std::mutex> lg(IOLock);
if (SX126x_DEBUG) {
printf("SX126x: WriteRegister: 0x%04x %u\n", address, size);
}