Giorgos Tsapparellas
Driver for the SX1272 RF Transceiver
Dependents: LoRaWAN_mbed_lmic_agriculture_app
sx1272/sx1272.cpp
- Committer:
- mluis
- Date:
- 2016-05-13
- Revision:
- 4:90bd79f1b458
- Parent:
- 3:5baff45eb3c5
- Child:
- 5:e90cbf646eb1
File content as of revision 4:90bd79f1b458:
/*
/ _____) _ | |
( (____ _____ ____ _| |_ _____ ____| |__
\____ \| ___ | (_ _) ___ |/ ___) _ \
_____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
(C) 2015 Semtech
Description: Actual implementation of a SX1272 radio, inherits Radio
License: Revised BSD License, see LICENSE.TXT file include in the project
Maintainers: Miguel Luis, Gregory Cristian and Nicolas Huguenin
*/
#include "sx1272.h"
const FskBandwidth_t SX1272::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
};
SX1272::SX1272( RadioEvents_t *events,
PinName mosi, PinName miso, PinName sclk, PinName nss, PinName reset,
PinName dio0, PinName dio1, PinName dio2, PinName dio3, PinName dio4, PinName dio5 )
: Radio( events ),
spi( mosi, miso, sclk ),
nss( nss ),
reset( reset ),
dio0( dio0 ), dio1( dio1 ), dio2( dio2 ), dio3( dio3 ), dio4( dio4 ), dio5( dio5 ),
isRadioActive( false )
{
wait_ms( 10 );
this->rxTx = 0;
this->rxtxBuffer = new uint8_t[RX_BUFFER_SIZE];
currentOpMode = RF_OPMODE_STANDBY;
this->RadioEvents = events;
this->dioIrq = new DioIrqHandler[6];
this->dioIrq[0] = &SX1272::OnDio0Irq;
this->dioIrq[1] = &SX1272::OnDio1Irq;
this->dioIrq[2] = &SX1272::OnDio2Irq;
this->dioIrq[3] = &SX1272::OnDio3Irq;
this->dioIrq[4] = &SX1272::OnDio4Irq;
this->dioIrq[5] = NULL;
this->settings.State = RF_IDLE;
}
SX1272::~SX1272( )
{
delete this->rxtxBuffer;
delete this->dioIrq;
}
void SX1272::Init( RadioEvents_t *events )
{
this->RadioEvents = events;
}
RadioState SX1272::GetStatus( void )
{
return this->settings.State;
}
void SX1272::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 SX1272::IsChannelFree( RadioModems_t modem, uint32_t freq, int16_t rssiThresh )
{
int16_t rssi = 0;
SetModem( modem );
SetChannel( freq );
SetOpMode( RF_OPMODE_RECEIVER );
wait_ms( 1 );
rssi = GetRssi( modem );
Sleep( );
if( rssi > rssiThresh )
{
return false;
}
return true;
}
uint32_t SX1272::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 SX1272::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 SX1272::SetRxConfig( RadioModems_t 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:
{
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 ) );
if( fixLen == 1 )
{
Write( REG_PAYLOADLENGTH, payloadLen );
}
else
{
Write( REG_PAYLOADLENGTH, 0xFF ); // Set payload length to the maximum
}
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 ) );
}
break;
case MODEM_LORA:
{
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.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;
}
if( ( ( bandwidth == 0 ) && ( ( datarate == 11 ) || ( datarate == 12 ) ) ) ||
( ( bandwidth == 1 ) && ( datarate == 12 ) ) )
{
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 &
RFLR_MODEMCONFIG1_RXPAYLOADCRC_MASK &
RFLR_MODEMCONFIG1_LOWDATARATEOPTIMIZE_MASK ) |
( bandwidth << 6 ) | ( coderate << 3 ) |
( fixLen << 2 ) | ( crcOn << 1 ) |
this->settings.LoRa.LowDatarateOptimize );
Write( REG_LR_MODEMCONFIG2,
( Read( REG_LR_MODEMCONFIG2 ) &
RFLR_MODEMCONFIG2_SF_MASK &
RFLR_MODEMCONFIG2_SYMBTIMEOUTMSB_MASK ) |
( datarate << 4 ) |
( ( symbTimeout >> 8 ) & ~RFLR_MODEMCONFIG2_SYMBTIMEOUTMSB_MASK ) );
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;
}
}
#if defined ( TARGET_MOTE_L152RC )
/* PD_2=0 PD_2=1
op PaB rfo rfo
0 4.6 18.5 27.0
1 5.6 21.1 28.1
2 6.7 23.3 29.1
3 7.7 25.3 30.1
4 8.8 26.2 30.7
5 9.8 27.3 31.2
6 10.7 28.1 31.6
7 11.7 28.6 32.2
8 12.8 29.2 32.4
9 13.7 29.9 32.9
10 14.7 30.5 33.1
11 15.6 30.8 33.4
12 16.4 30.9 33.6
13 17.1 31.0 33.7
14 17.8 31.1 33.7
15 18.4 31.1 33.7
*/
// txpow: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
static const uint8_t PaBTable[20] = { 0, 0, 0, 0, 0, 1, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15 };
// txpow: 20 21 22 23 24 25 26 27 28 29 30
static const uint8_t RfoTable[11] = { 1, 1, 1, 2, 2, 3, 4, 5, 6, 8, 9 };
#endif
void SX1272::SetTxConfig( RadioModems_t 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 );
#if defined ( TARGET_MOTE_L152RC )
if( power > 19 )
{
paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | RF_PACONFIG_PASELECT_RFO;
paConfig = ( paConfig & RFLR_PACONFIG_OUTPUTPOWER_MASK ) | RfoTable[power - 20];
}
else
{
paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | RF_PACONFIG_PASELECT_PABOOST;
paConfig = ( paConfig & RFLR_PACONFIG_OUTPUTPOWER_MASK ) | PaBTable[power];
}
#else
paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | GetPaSelect( this->settings.Channel );
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 & RFLR_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power - 5 ) & 0x0F );
}
else
{
if( power < 2 )
{
power = 2;
}
if( power > 17 )
{
power = 17;
}
paConfig = ( paConfig & RFLR_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power - 2 ) & 0x0F );
}
}
else
{
if( power < -1 )
{
power = -1;
}
if( power > 14 )
{
power = 14;
}
paConfig = ( paConfig & RFLR_PACONFIG_OUTPUTPOWER_MASK ) | ( uint8_t )( ( uint16_t )( power + 1 ) & 0x0F );
}
#endif
Write( REG_PACONFIG, paConfig );
Write( REG_PADAC, paDac );
switch( modem )
{
case MODEM_FSK:
{
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 ) );
}
break;
case MODEM_LORA:
{
this->settings.LoRa.Power = power;
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.FreqHopOn = freqHopOn;
this->settings.LoRa.HopPeriod = hopPeriod;
this->settings.LoRa.CrcOn = crcOn;
this->settings.LoRa.IqInverted = iqInverted;
this->settings.LoRa.TxTimeout = timeout;
if( datarate > 12 )
{
datarate = 12;
}
else if( datarate < 6 )
{
datarate = 6;
}
if( ( ( bandwidth == 0 ) && ( ( datarate == 11 ) || ( datarate == 12 ) ) ) ||
( ( bandwidth == 1 ) && ( datarate == 12 ) ) )
{
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 &
RFLR_MODEMCONFIG1_RXPAYLOADCRC_MASK &
RFLR_MODEMCONFIG1_LOWDATARATEOPTIMIZE_MASK ) |
( bandwidth << 6 ) | ( coderate << 3 ) |
( fixLen << 2 ) | ( crcOn << 1 ) |
this->settings.LoRa.LowDatarateOptimize );
Write( REG_LR_MODEMCONFIG2,
( Read( REG_LR_MODEMCONFIG2 ) &
RFLR_MODEMCONFIG2_SF_MASK ) |
( datarate << 4 ) );
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 SX1272::TimeOnAir( RadioModems_t modem, uint8_t pktLen )
{
uint32_t airTime = 0;
switch( modem )
{
case MODEM_FSK:
{
airTime = rint( ( 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 );
}
break;
case MODEM_LORA:
{
double bw = 0.0;
switch( this->settings.LoRa.Bandwidth )
{
case 0: // 125 kHz
bw = 125e3;
break;
case 1: // 250 kHz
bw = 250e3;
break;
case 2: // 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 ) ? 2 : 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 SX1272::Send( uint8_t *buffer, uint8_t size )
{
uint32_t txTimeout = 0;
switch( this->settings.Modem )
{
case MODEM_FSK:
{
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
{
memcpy( rxtxBuffer, buffer, size );
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;
}
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 ) );
Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_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 ) );
Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_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 SX1272::Sleep( void )
{
txTimeoutTimer.detach( );
rxTimeoutTimer.detach( );
SetOpMode( RF_OPMODE_SLEEP );
this->settings.State = RF_IDLE;
}
void SX1272::Standby( void )
{
txTimeoutTimer.detach( );
rxTimeoutTimer.detach( );
SetOpMode( RF_OPMODE_STANDBY );
this->settings.State = RF_IDLE;
}
void SX1272::Rx( uint32_t timeout )
{
bool rxContinuous = false;
switch( this->settings.Modem )
{
case MODEM_FSK:
{
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_DIO1_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;
Write( REG_RXCONFIG, RF_RXCONFIG_AFCAUTO_ON | RF_RXCONFIG_AGCAUTO_ON | RF_RXCONFIG_RXTRIGER_PREAMBLEDETECT );
this->settings.FskPacketHandler.PreambleDetected = false;
this->settings.FskPacketHandler.SyncWordDetected = false;
this->settings.FskPacketHandler.NbBytes = 0;
this->settings.FskPacketHandler.Size = 0;
}
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 ) );
Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_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 ) );
Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_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( rxtxBuffer, 0, ( size_t )RX_BUFFER_SIZE );
this->settings.State = RF_RX_RUNNING;
if( timeout != 0 )
{
rxTimeoutTimer.attach_us( this, &SX1272::OnTimeoutIrq, timeout );
}
if( this->settings.Modem == MODEM_FSK )
{
SetOpMode( RF_OPMODE_RECEIVER );
if( rxContinuous == false )
{
rxTimeoutSyncWord.attach_us( this, &SX1272::OnTimeoutIrq, ceil( ( 8.0 * ( this->settings.Fsk.PreambleLen +
( ( Read( REG_SYNCCONFIG ) &
~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
1.0 ) + 10.0 ) /
( double )this->settings.Fsk.Datarate ) * 1e6 ) + 4000 );
}
}
else
{
if( rxContinuous == true )
{
SetOpMode( RFLR_OPMODE_RECEIVER );
}
else
{
SetOpMode( RFLR_OPMODE_RECEIVER_SINGLE );
}
}
}
void SX1272::Tx( uint32_t timeout )
{
switch( this->settings.Modem )
{
case MODEM_FSK:
{
// DIO0=PacketSent
// DIO1=FifoEmpty
// 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 ) |
RF_DIOMAPPING1_DIO1_01 );
Write( REG_DIOMAPPING2, ( Read( REG_DIOMAPPING2 ) & RF_DIOMAPPING2_DIO4_MASK &
RF_DIOMAPPING2_MAP_MASK ) );
this->settings.FskPacketHandler.FifoThresh = Read( REG_FIFOTHRESH ) & 0x3F;
}
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, DIO2=FhssChangeChannel
Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK & RFLR_DIOMAPPING1_DIO2_MASK ) | RFLR_DIOMAPPING1_DIO0_01 | 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 = RF_TX_RUNNING;
txTimeoutTimer.attach_us( this, &SX1272::OnTimeoutIrq, timeout );
SetOpMode( RF_OPMODE_TRANSMITTER );
}
void SX1272::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 = RF_CAD;
SetOpMode( RFLR_OPMODE_CAD );
}
break;
default:
break;
}
}
int16_t SX1272::GetRssi( RadioModems_t modem )
{
int16_t rssi = 0;
switch( modem )
{
case MODEM_FSK:
rssi = -( Read( REG_RSSIVALUE ) >> 1 );
break;
case MODEM_LORA:
rssi = RSSI_OFFSET + Read( REG_LR_RSSIVALUE );
break;
default:
rssi = -1;
break;
}
return rssi;
}
void SX1272::SetOpMode( uint8_t opMode )
{
if( opMode == RF_OPMODE_SLEEP )
{
SetAntSwLowPower( true );
}
else
{
SetAntSwLowPower( false );
if( opMode == RF_OPMODE_TRANSMITTER )
{
SetAntSw( 1 );
}
else
{
SetAntSw( 0 );
}
}
Write( REG_OPMODE, ( Read( REG_OPMODE ) & RF_OPMODE_MASK ) | opMode );
}
void SX1272::SetModem( RadioModems_t modem )
{
if( this->settings.Modem == modem )
{
return;
}
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( REG_DIOMAPPING1, 0x00 );
Write( REG_DIOMAPPING2, 0x00 );
break;
}
}
void SX1272::SetMaxPayloadLength( RadioModems_t modem, uint8_t max )
{
this->SetModem( modem );
switch( modem )
{
case MODEM_FSK:
if( this->settings.Fsk.FixLen == false )
{
this->Write( REG_PAYLOADLENGTH, max );
}
break;
case MODEM_LORA:
this->Write( REG_LR_PAYLOADMAXLENGTH, max );
break;
}
}
void SX1272::OnTimeoutIrq( void )
{
switch( this->settings.State )
{
case RF_RX_RUNNING:
if( this->settings.Modem == MODEM_FSK )
{
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 );
rxTimeoutSyncWord.attach_us( this, &SX1272::OnTimeoutIrq, ceil( ( 8.0 * ( this->settings.Fsk.PreambleLen +
( ( Read( REG_SYNCCONFIG ) &
~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
1.0 ) + 10.0 ) /
( double )this->settings.Fsk.Datarate ) * 1e6 ) + 4000 );
}
else
{
this->settings.State = RF_IDLE;
rxTimeoutSyncWord.detach( );
}
}
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxTimeout != NULL ) )
{
this->RadioEvents->RxTimeout( );
}
break;
case RF_TX_RUNNING:
this->settings.State = RF_IDLE;
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->TxTimeout != NULL ) )
{
this->RadioEvents->TxTimeout( );
}
break;
default:
break;
}
}
void SX1272::OnDio0Irq( void )
{
volatile uint8_t irqFlags = 0;
switch( this->settings.State )
{
case RF_RX_RUNNING:
//TimerStop( &RxTimeoutTimer );
// RxDone interrupt
switch( this->settings.Modem )
{
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 );
rxTimeoutTimer.detach( );
if( this->settings.Fsk.RxContinuous == false )
{
rxTimeoutSyncWord.detach( );
this->settings.State = RF_IDLE;
}
else
{
// Continuous mode restart Rx chain
Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
rxTimeoutSyncWord.attach_us( this, &SX1272::OnTimeoutIrq, ceil( ( 8.0 * ( this->settings.Fsk.PreambleLen +
( ( Read( REG_SYNCCONFIG ) &
~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
1.0 ) + 10.0 ) /
( double )this->settings.Fsk.Datarate ) * 1e6 ) + 4000 );
}
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxError != NULL ) )
{
this->RadioEvents->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( rxtxBuffer + 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( rxtxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
this->settings.FskPacketHandler.NbBytes += ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
}
rxTimeoutTimer.detach( );
if( this->settings.Fsk.RxContinuous == false )
{
this->settings.State = RF_IDLE;
rxTimeoutSyncWord.detach( );
}
else
{
// Continuous mode restart Rx chain
Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
rxTimeoutSyncWord.attach_us( this, &SX1272::OnTimeoutIrq, ceil( ( 8.0 * ( this->settings.Fsk.PreambleLen +
( ( Read( REG_SYNCCONFIG ) &
~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
1.0 ) + 10.0 ) /
( double )this->settings.Fsk.Datarate ) * 1e6 ) + 4000 );
}
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxDone != NULL ) )
{
this->RadioEvents->RxDone( rxtxBuffer, 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;
case MODEM_LORA:
{
int8_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 = RF_IDLE;
}
rxTimeoutTimer.detach( );
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxError != NULL ) )
{
this->RadioEvents->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( snr < 0 )
{
this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET + rssi + ( rssi >> 4 ) +
snr;
}
else
{
this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET + rssi + ( rssi >> 4 );
}
this->settings.LoRaPacketHandler.Size = Read( REG_LR_RXNBBYTES );
ReadFifo( rxtxBuffer, this->settings.LoRaPacketHandler.Size );
if( this->settings.LoRa.RxContinuous == false )
{
this->settings.State = RF_IDLE;
}
rxTimeoutTimer.detach( );
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxDone != NULL ) )
{
this->RadioEvents->RxDone( rxtxBuffer, this->settings.LoRaPacketHandler.Size, this->settings.LoRaPacketHandler.RssiValue, this->settings.LoRaPacketHandler.SnrValue );
}
}
break;
default:
break;
}
break;
case RF_TX_RUNNING:
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 = RF_IDLE;
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->TxDone != NULL ) )
{
this->RadioEvents->TxDone( );
}
break;
}
break;
default:
break;
}
}
void SX1272::OnDio1Irq( void )
{
switch( this->settings.State )
{
case RF_RX_RUNNING:
switch( this->settings.Modem )
{
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( ( rxtxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.FifoThresh );
this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.FifoThresh;
}
else
{
ReadFifo( ( rxtxBuffer + 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;
case MODEM_LORA:
// Sync time out
rxTimeoutTimer.detach( );
this->settings.State = RF_IDLE;
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxTimeout != NULL ) )
{
this->RadioEvents->RxTimeout( );
}
break;
default:
break;
}
break;
case RF_TX_RUNNING:
switch( this->settings.Modem )
{
case MODEM_FSK:
// FifoEmpty interrupt
if( ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes ) > this->settings.FskPacketHandler.ChunkSize )
{
WriteFifo( ( rxtxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.ChunkSize );
this->settings.FskPacketHandler.NbBytes += this->settings.FskPacketHandler.ChunkSize;
}
else
{
// Write the last chunk of data
WriteFifo( rxtxBuffer + 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;
case MODEM_LORA:
break;
default:
break;
}
break;
default:
break;
}
}
void SX1272::OnDio2Irq( void )
{
switch( this->settings.State )
{
case RF_RX_RUNNING:
switch( this->settings.Modem )
{
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;
case MODEM_LORA:
if( this->settings.LoRa.FreqHopOn == true )
{
// Clear Irq
Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL );
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->FhssChangeChannel != NULL ) )
{
this->RadioEvents->FhssChangeChannel( ( Read( REG_LR_HOPCHANNEL ) & RFLR_HOPCHANNEL_CHANNEL_MASK ) );
}
}
break;
default:
break;
}
break;
case RF_TX_RUNNING:
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( ( this->RadioEvents != NULL ) && ( this->RadioEvents->FhssChangeChannel != NULL ) )
{
this->RadioEvents->FhssChangeChannel( ( Read( REG_LR_HOPCHANNEL ) & RFLR_HOPCHANNEL_CHANNEL_MASK ) );
}
}
break;
default:
break;
}
break;
default:
break;
}
}
void SX1272::OnDio3Irq( void )
{
switch( this->settings.Modem )
{
case MODEM_FSK:
break;
case MODEM_LORA:
if( ( Read( REG_LR_IRQFLAGS ) & RFLR_IRQFLAGS_CADDETECTED ) == RFLR_IRQFLAGS_CADDETECTED )
{
// Clear Irq
Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_CADDETECTED | RFLR_IRQFLAGS_CADDONE );
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->CadDone != NULL ) )
{
this->RadioEvents->CadDone( true );
}
}
else
{
// Clear Irq
Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_CADDONE );
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->CadDone != NULL ) )
{
this->RadioEvents->CadDone( false );
}
}
break;
default:
break;
}
}
void SX1272::OnDio4Irq( void )
{
switch( this->settings.Modem )
{
case MODEM_FSK:
{
if( this->settings.FskPacketHandler.PreambleDetected == false )
{
this->settings.FskPacketHandler.PreambleDetected = true;
}
}
break;
case MODEM_LORA:
break;
default:
break;
}
}
void SX1272::OnDio5Irq( void )
{
switch( this->settings.Modem )
{
case MODEM_FSK:
break;
case MODEM_LORA:
break;
default:
break;
}
}