Lukas Formanek
use with LoRa Access Point
Diff: sx1276/sx1276.cpp
- Revision:
- 27:d09a8ef807e2
- Parent:
- 22:7f3aab69cca9
--- a/sx1276/sx1276.cpp Thu Nov 26 16:55:15 2015 +0000
+++ b/sx1276/sx1276.cpp Mon Apr 24 09:26:23 2017 +0000
@@ -15,8 +15,8 @@
#include "sx1276.h"
const FskBandwidth_t SX1276::FskBandwidths[] =
-{
- { 2600 , 0x17 },
+{
+ { 2600 , 0x17 },
{ 3100 , 0x0F },
{ 3900 , 0x07 },
{ 5200 , 0x16 },
@@ -37,7 +37,7 @@
{ 166700, 0x11 },
{ 200000, 0x09 },
{ 250000, 0x01 },
- { 300000, 0x00 }, // Invalid Badwidth
+ { 300000, 0x00 }, // Invalid Bandwidth
};
@@ -52,12 +52,10 @@
isRadioActive( false )
{
wait_ms( 10 );
- this->rxTx = 0;
- this->rxBuffer = new uint8_t[RX_BUFFER_SIZE];
- previousOpMode = RF_OPMODE_STANDBY;
-
+ this->rxtxBuffer = new uint8_t[RX_BUFFER_SIZE];
+
this->RadioEvents = events;
-
+
this->dioIrq = new DioIrqHandler[6];
this->dioIrq[0] = &SX1276::OnDio0Irq;
@@ -66,13 +64,13 @@
this->dioIrq[3] = &SX1276::OnDio3Irq;
this->dioIrq[4] = &SX1276::OnDio4Irq;
this->dioIrq[5] = NULL;
-
+
this->settings.State = RF_IDLE;
}
SX1276::~SX1276( )
{
- delete this->rxBuffer;
+ delete this->rxtxBuffer;
delete this->dioIrq;
}
@@ -98,19 +96,19 @@
bool SX1276::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;
@@ -124,7 +122,7 @@
uint32_t rnd = 0;
/*
- * Radio setup for random number generation
+ * Radio setup for random number generation
*/
// Set LoRa modem ON
SetModem( MODEM_LORA );
@@ -182,7 +180,7 @@
// Sets a Frequency in HF band
SetChannel( 868000000 );
- // Launch Rx chain calibration for HF band
+ // 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 )
{
@@ -237,7 +235,8 @@
this->settings.Fsk.IqInverted = iqInverted;
this->settings.Fsk.RxContinuous = rxContinuous;
this->settings.Fsk.PreambleLen = preambleLen;
-
+ this->settings.Fsk.RxSingleTimeout = symbTimeout * ( ( 1.0 / ( double )datarate ) * 8.0 ) * 1e3;
+
datarate = ( uint16_t )( ( double )XTAL_FREQ / ( double )datarate );
Write( REG_BITRATEMSB, ( uint8_t )( datarate >> 8 ) );
Write( REG_BITRATELSB, ( uint8_t )( datarate & 0xFF ) );
@@ -247,18 +246,23 @@
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 ) &
+ ( Read( REG_PACKETCONFIG1 ) &
RF_PACKETCONFIG1_CRC_MASK &
RF_PACKETCONFIG1_PACKETFORMAT_MASK ) |
( ( fixLen == 1 ) ? RF_PACKETCONFIG1_PACKETFORMAT_FIXED : RF_PACKETCONFIG1_PACKETFORMAT_VARIABLE ) |
( crcOn << 4 ) );
+ Write( REG_PACKETCONFIG2, ( Read( REG_PACKETCONFIG2 ) | RF_PACKETCONFIG2_DATAMODE_PACKET ) );
}
break;
case MODEM_LORA:
@@ -289,7 +293,7 @@
{
datarate = 6;
}
-
+
if( ( ( bandwidth == 7 ) && ( ( datarate == 11 ) || ( datarate == 12 ) ) ) ||
( ( bandwidth == 8 ) && ( datarate == 12 ) ) )
{
@@ -300,14 +304,14 @@
this->settings.LoRa.LowDatarateOptimize = 0x00;
}
- Write( REG_LR_MODEMCONFIG1,
+ Write( REG_LR_MODEMCONFIG1,
( Read( REG_LR_MODEMCONFIG1 ) &
RFLR_MODEMCONFIG1_BW_MASK &
RFLR_MODEMCONFIG1_CODINGRATE_MASK &
RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
- ( bandwidth << 4 ) | ( coderate << 1 ) |
+ ( bandwidth << 4 ) | ( coderate << 1 ) |
fixLen );
-
+
Write( REG_LR_MODEMCONFIG2,
( Read( REG_LR_MODEMCONFIG2 ) &
RFLR_MODEMCONFIG2_SF_MASK &
@@ -316,13 +320,13 @@
( datarate << 4 ) | ( crcOn << 2 ) |
( ( symbTimeout >> 8 ) & ~RFLR_MODEMCONFIG2_SYMBTIMEOUTMSB_MASK ) );
- Write( REG_LR_MODEMCONFIG3,
+ 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 ) );
@@ -337,9 +341,9 @@
Write( REG_LR_HOPPERIOD, this->settings.LoRa.HopPeriod );
}
- if( ( bandwidth == 9 ) && ( RF_MID_BAND_THRESH ) )
+ if( ( bandwidth == 9 ) && ( this->settings.Channel > RF_MID_BAND_THRESH ) )
{
- // ERRATA 2.1 - Sensitivity Optimization with a 500 kHz Bandwidth
+ // ERRATA 2.1 - Sensitivity Optimization with a 500 kHz Bandwidth
Write( REG_LR_TEST36, 0x02 );
Write( REG_LR_TEST3A, 0x64 );
}
@@ -354,14 +358,14 @@
// ERRATA 2.1 - Sensitivity Optimization with a 500 kHz Bandwidth
Write( REG_LR_TEST36, 0x03 );
}
-
+
if( datarate == 6 )
{
- Write( REG_LR_DETECTOPTIMIZE,
+ Write( REG_LR_DETECTOPTIMIZE,
( Read( REG_LR_DETECTOPTIMIZE ) &
RFLR_DETECTIONOPTIMIZE_MASK ) |
RFLR_DETECTIONOPTIMIZE_SF6 );
- Write( REG_LR_DETECTIONTHRESHOLD,
+ Write( REG_LR_DETECTIONTHRESHOLD,
RFLR_DETECTIONTHRESH_SF6 );
}
else
@@ -370,7 +374,7 @@
( Read( REG_LR_DETECTOPTIMIZE ) &
RFLR_DETECTIONOPTIMIZE_MASK ) |
RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
- Write( REG_LR_DETECTIONTHRESHOLD,
+ Write( REG_LR_DETECTIONTHRESHOLD,
RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
}
}
@@ -378,72 +382,15 @@
}
}
-void SX1276::SetTxConfig( RadioModems_t modem, int8_t power, uint32_t fdev,
+void SX1276::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,
+ 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 );
+ SetRfTxPower( power );
switch( modem )
{
@@ -458,7 +405,7 @@
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 ) );
@@ -471,12 +418,12 @@
Write( REG_PREAMBLELSB, preambleLen & 0xFF );
Write( REG_PACKETCONFIG1,
- ( Read( 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 ) );
-
+ Write( REG_PACKETCONFIG2, ( Read( REG_PACKETCONFIG2 ) | RF_PACKETCONFIG2_DATAMODE_PACKET ) );
}
break;
case MODEM_LORA:
@@ -523,12 +470,12 @@
Write( REG_LR_HOPPERIOD, this->settings.LoRa.HopPeriod );
}
- Write( REG_LR_MODEMCONFIG1,
+ Write( REG_LR_MODEMCONFIG1,
( Read( REG_LR_MODEMCONFIG1 ) &
RFLR_MODEMCONFIG1_BW_MASK &
RFLR_MODEMCONFIG1_CODINGRATE_MASK &
RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
- ( bandwidth << 4 ) | ( coderate << 1 ) |
+ ( bandwidth << 4 ) | ( coderate << 1 ) |
fixLen );
Write( REG_LR_MODEMCONFIG2,
@@ -537,21 +484,21 @@
RFLR_MODEMCONFIG2_RXPAYLOADCRC_MASK ) |
( datarate << 4 ) | ( crcOn << 2 ) );
- Write( REG_LR_MODEMCONFIG3,
+ 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,
+ Write( REG_LR_DETECTOPTIMIZE,
( Read( REG_LR_DETECTOPTIMIZE ) &
RFLR_DETECTIONOPTIMIZE_MASK ) |
RFLR_DETECTIONOPTIMIZE_SF6 );
- Write( REG_LR_DETECTIONTHRESHOLD,
+ Write( REG_LR_DETECTIONTHRESHOLD,
RFLR_DETECTIONTHRESH_SF6 );
}
else
@@ -560,7 +507,7 @@
( Read( REG_LR_DETECTOPTIMIZE ) &
RFLR_DETECTIONOPTIMIZE_MASK ) |
RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
- Write( REG_LR_DETECTIONTHRESHOLD,
+ Write( REG_LR_DETECTIONTHRESHOLD,
RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
}
}
@@ -568,7 +515,7 @@
}
}
-double SX1276::TimeOnAir( RadioModems_t modem, uint8_t pktLen )
+uint32_t SX1276::TimeOnAir( RadioModems_t modem, uint8_t pktLen )
{
uint32_t airTime = 0;
@@ -582,7 +529,7 @@
( ( ( 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 );
+ this->settings.Fsk.Datarate ) * 1e3 );
}
break;
case MODEM_LORA:
@@ -632,15 +579,15 @@
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 ) ) ) *
+ ( 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
+ // Time on air
double tOnAir = tPreamble + tPayload;
- // return us secs
- airTime = floor( tOnAir * 1e6 + 0.999 );
+ // return ms secs
+ airTime = floor( tOnAir * 1e3 + 0.999 );
}
break;
}
@@ -665,14 +612,15 @@
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;
}
@@ -693,14 +641,14 @@
{
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
+ // Full buffer used for Tx
Write( REG_LR_FIFOTXBASEADDR, 0 );
Write( REG_LR_FIFOADDRPTR, 0 );
@@ -722,7 +670,7 @@
void SX1276::Sleep( void )
{
- txTimeoutTimer.detach( );
+ txTimeoutTimer.detach( );
rxTimeoutTimer.detach( );
SetOpMode( RF_OPMODE_SLEEP );
@@ -731,7 +679,7 @@
void SX1276::Standby( void )
{
- txTimeoutTimer.detach( );
+ txTimeoutTimer.detach( );
rxTimeoutTimer.detach( );
SetOpMode( RF_OPMODE_STANDBY );
@@ -741,13 +689,13 @@
void SX1276::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
@@ -755,17 +703,21 @@
// 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_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;
@@ -783,8 +735,7 @@
{
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 );
- }
-
+ }
// ERRATA 2.3 - Receiver Spurious Reception of a LoRa Signal
if( this->settings.LoRa.Bandwidth < 9 )
@@ -834,7 +785,7 @@
}
rxContinuous = this->settings.LoRa.RxContinuous;
-
+
if( this->settings.LoRa.FreqHopOn == true )
{
Write( REG_LR_IRQFLAGSMASK, //RFLR_IRQFLAGS_RXTIMEOUT |
@@ -845,7 +796,7 @@
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 );
}
@@ -859,7 +810,7 @@
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 );
}
@@ -869,25 +820,22 @@
break;
}
- memset( rxBuffer, 0, ( size_t )RX_BUFFER_SIZE );
+ memset( rxtxBuffer, 0, ( size_t )RX_BUFFER_SIZE );
this->settings.State = RF_RX_RUNNING;
if( timeout != 0 )
{
- rxTimeoutTimer.attach_us( this, &SX1276::OnTimeoutIrq, timeout );
+ rxTimeoutTimer.attach_us( mbed::callback( this, &SX1276::OnTimeoutIrq ), timeout * 1e3 );
}
if( this->settings.Modem == MODEM_FSK )
{
SetOpMode( RF_OPMODE_RECEIVER );
-
+
if( rxContinuous == false )
{
- rxTimeoutSyncWord.attach_us( this, &SX1276::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
- ( ( Read( REG_SYNCCONFIG ) &
- ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
- 1.0 ) + 10.0 ) /
- ( double )this->settings.Fsk.Datarate ) * 1e6 );
+ rxTimeoutSyncWord.attach_us( mbed::callback( this, &SX1276::OnTimeoutIrq ),
+ this->settings.Fsk.RxSingleTimeout * 1e3 );
}
}
else
@@ -911,13 +859,15 @@
case MODEM_FSK:
{
// DIO0=PacketSent
- // DIO1=FifoLevel
+ // DIO1=FifoEmpty
// DIO2=FifoFull
// DIO3=FifoEmpty
// DIO4=LowBat
// DIO5=ModeReady
Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RF_DIOMAPPING1_DIO0_MASK &
- RF_DIOMAPPING1_DIO2_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 ) );
@@ -936,7 +886,7 @@
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 );
}
@@ -959,7 +909,7 @@
}
this->settings.State = RF_TX_RUNNING;
- txTimeoutTimer.attach_us( this, &SX1276::OnTimeoutIrq, timeout );
+ txTimeoutTimer.attach_us( mbed::callback( this, &SX1276::OnTimeoutIrq ), timeout * 1e3 );
SetOpMode( RF_OPMODE_TRANSMITTER );
}
@@ -969,7 +919,7 @@
{
case MODEM_FSK:
{
-
+
}
break;
case MODEM_LORA:
@@ -981,12 +931,12 @@
RFLR_IRQFLAGS_TXDONE |
//RFLR_IRQFLAGS_CADDONE |
RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL // |
- //RFLR_IRQFLAGS_CADDETECTED
+ //RFLR_IRQFLAGS_CADDETECTED
);
-
+
// DIO3=CADDone
- Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_00 );
-
+ Write( REG_DIOMAPPING1, ( Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO3_MASK ) | RFLR_DIOMAPPING1_DIO3_00 );
+
this->settings.State = RF_CAD;
SetOpMode( RFLR_OPMODE_CAD );
}
@@ -996,6 +946,24 @@
}
}
+void SX1276::SetTxContinuousWave( uint32_t freq, int8_t power, uint16_t time )
+{
+ uint32_t timeout = ( uint32_t )( time * 1e6 );
+
+ SetChannel( freq );
+
+ SetTxConfig( MODEM_FSK, power, 0, 0, 4800, 0, 5, false, false, 0, 0, 0, timeout );
+
+ Write( REG_PACKETCONFIG2, ( Read( REG_PACKETCONFIG2 ) & RF_PACKETCONFIG2_DATAMODE_MASK ) );
+ // Disable radio interrupts
+ Write( REG_DIOMAPPING1, RF_DIOMAPPING1_DIO0_11 | RF_DIOMAPPING1_DIO1_11 );
+ Write( REG_DIOMAPPING2, RF_DIOMAPPING2_DIO4_10 | RF_DIOMAPPING2_DIO5_10 );
+
+ this->settings.State = RF_TX_RUNNING;
+ txTimeoutTimer.attach_us( mbed::callback( this, &SX1276::OnTimeoutIrq ), timeout );
+ SetOpMode( RF_OPMODE_TRANSMITTER );
+}
+
int16_t SX1276::GetRssi( RadioModems_t modem )
{
int16_t rssi = 0;
@@ -1024,31 +992,29 @@
void SX1276::SetOpMode( uint8_t opMode )
{
- if( opMode != previousOpMode )
+ if( opMode == RF_OPMODE_SLEEP )
{
- previousOpMode = 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 );
+ SetAntSwLowPower( true );
}
+ else
+ {
+ SetAntSwLowPower( false );
+ SetAntSw( opMode );
+ }
+ Write( REG_OPMODE, ( Read( REG_OPMODE ) & RF_OPMODE_MASK ) | opMode );
}
void SX1276::SetModem( RadioModems_t modem )
{
+ if( ( Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_ON ) != 0 )
+ {
+ this->settings.Modem = MODEM_LORA;
+ }
+ else
+ {
+ this->settings.Modem = MODEM_FSK;
+ }
+
if( this->settings.Modem == modem )
{
return;
@@ -1059,14 +1025,14 @@
{
default:
case MODEM_FSK:
- SetOpMode( RF_OPMODE_SLEEP );
+ 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 );
+ Sleep( );
Write( REG_OPMODE, ( Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_MASK ) | RFLR_OPMODE_LONGRANGEMODE_ON );
Write( REG_DIOMAPPING1, 0x00 );
@@ -1093,6 +1059,22 @@
}
}
+void SX1276::SetPublicNetwork( bool enable )
+{
+ SetModem( MODEM_LORA );
+ this->settings.LoRa.PublicNetwork = enable;
+ if( enable == true )
+ {
+ // Change LoRa modem SyncWord
+ Write( REG_LR_SYNCWORD, LORA_MAC_PUBLIC_SYNCWORD );
+ }
+ else
+ {
+ // Change LoRa modem SyncWord
+ Write( REG_LR_SYNCWORD, LORA_MAC_PRIVATE_SYNCWORD );
+ }
+}
+
void SX1276::OnTimeoutIrq( void )
{
switch( this->settings.State )
@@ -1106,7 +1088,7 @@
this->settings.FskPacketHandler.Size = 0;
// Clear Irqs
- Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
+ Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
RF_IRQFLAGS1_PREAMBLEDETECT |
RF_IRQFLAGS1_SYNCADDRESSMATCH );
Write( REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN );
@@ -1115,6 +1097,8 @@
{
// Continuous mode restart Rx chain
Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
+ rxTimeoutSyncWord.attach_us( mbed::callback( this, &SX1276::OnTimeoutIrq ),
+ this->settings.Fsk.RxSingleTimeout * 1e3 );
}
else
{
@@ -1128,6 +1112,31 @@
}
break;
case RF_TX_RUNNING:
+ // Tx timeout shouldn't happen.
+ // But it has been observed that when it happens it is a result of a corrupted SPI transfer
+ // it depends on the platform design.
+ //
+ // The workaround is to put the radio in a known state. Thus, we re-initialize it.
+
+ // BEGIN WORKAROUND
+
+ // Reset the radio
+ Reset( );
+
+ // Calibrate Rx chain
+ RxChainCalibration( );
+
+ // Initialize radio default values
+ SetOpMode( RF_OPMODE_SLEEP );
+
+ RadioRegistersInit( );
+
+ SetModem( MODEM_FSK );
+
+ // Restore previous network type setting.
+ SetPublicNetwork( this->settings.LoRa.PublicNetwork );
+ // END WORKAROUND
+
this->settings.State = RF_IDLE;
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->TxTimeout != NULL ) )
{
@@ -1144,7 +1153,7 @@
volatile uint8_t irqFlags = 0;
switch( this->settings.State )
- {
+ {
case RF_RX_RUNNING:
//TimerStop( &RxTimeoutTimer );
// RxDone interrupt
@@ -1157,27 +1166,26 @@
if( ( irqFlags & RF_IRQFLAGS2_CRCOK ) != RF_IRQFLAGS2_CRCOK )
{
// Clear Irqs
- Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
+ 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;
- rxTimeoutSyncWord.attach_us( this, &SX1276::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
- ( ( Read( REG_SYNCCONFIG ) &
- ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
- 1.0 ) + 10.0 ) /
- ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
}
else
{
// Continuous mode restart Rx chain
Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
+ rxTimeoutSyncWord.attach_us( mbed::callback( this, &SX1276::OnTimeoutIrq ),
+ this->settings.Fsk.RxSingleTimeout * 1e3 );
}
- rxTimeoutTimer.detach( );
-
+
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxError != NULL ) )
{
this->RadioEvents->RxError( );
@@ -1189,7 +1197,7 @@
break;
}
}
-
+
// Read received packet size
if( ( this->settings.FskPacketHandler.Size == 0 ) && ( this->settings.FskPacketHandler.NbBytes == 0 ) )
{
@@ -1201,35 +1209,34 @@
{
this->settings.FskPacketHandler.Size = Read( REG_PAYLOADLENGTH );
}
- ReadFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ 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( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ 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.attach_us( this, &SX1276::OnTimeoutIrq, ( 8.0 * ( this->settings.Fsk.PreambleLen +
- ( ( Read( REG_SYNCCONFIG ) &
- ~RF_SYNCCONFIG_SYNCSIZE_MASK ) +
- 1.0 ) + 10.0 ) /
- ( double )this->settings.Fsk.Datarate ) * 1e6 ) ;
+ rxTimeoutSyncWord.detach( );
}
else
{
// Continuous mode restart Rx chain
Write( REG_RXCONFIG, Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
+ rxTimeoutSyncWord.attach_us( mbed::callback( this, &SX1276::OnTimeoutIrq ),
+ this->settings.Fsk.RxSingleTimeout * 1e3 );
}
- rxTimeoutTimer.detach( );
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxDone != NULL ) )
{
- this->RadioEvents->RxDone( rxBuffer, this->settings.FskPacketHandler.Size, this->settings.FskPacketHandler.RssiValue, 0 );
- }
+ 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;
@@ -1289,7 +1296,7 @@
}
}
else
- {
+ {
if( this->settings.Channel > RF_MID_BAND_THRESH )
{
this->settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_HF + rssi + ( rssi >> 4 );
@@ -1301,8 +1308,8 @@
}
this->settings.LoRaPacketHandler.Size = Read( REG_LR_RXNBBYTES );
- ReadFifo( rxBuffer, this->settings.LoRaPacketHandler.Size );
-
+ ReadFifo( rxtxBuffer, this->settings.LoRaPacketHandler.Size );
+
if( this->settings.LoRa.RxContinuous == false )
{
this->settings.State = RF_IDLE;
@@ -1311,7 +1318,7 @@
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxDone != NULL ) )
{
- this->RadioEvents->RxDone( rxBuffer, this->settings.LoRaPacketHandler.Size, this->settings.LoRaPacketHandler.RssiValue, this->settings.LoRaPacketHandler.SnrValue );
+ this->RadioEvents->RxDone( rxtxBuffer, this->settings.LoRaPacketHandler.Size, this->settings.LoRaPacketHandler.RssiValue, this->settings.LoRaPacketHandler.SnrValue );
}
}
break;
@@ -1320,7 +1327,7 @@
}
break;
case RF_TX_RUNNING:
- txTimeoutTimer.detach( );
+ txTimeoutTimer.detach( );
// TxDone interrupt
switch( this->settings.Modem )
{
@@ -1334,7 +1341,7 @@
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->TxDone != NULL ) )
{
this->RadioEvents->TxDone( );
- }
+ }
break;
}
break;
@@ -1346,7 +1353,7 @@
void SX1276::OnDio1Irq( void )
{
switch( this->settings.State )
- {
+ {
case RF_RX_RUNNING:
switch( this->settings.Modem )
{
@@ -1367,18 +1374,21 @@
if( ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes ) > this->settings.FskPacketHandler.FifoThresh )
{
- ReadFifo( ( rxBuffer + 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( ( rxBuffer + this->settings.FskPacketHandler.NbBytes ), this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ 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( );
+ // Clear Irq
+ Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_RXTIMEOUT );
+
this->settings.State = RF_IDLE;
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->RxTimeout != NULL ) )
{
@@ -1393,16 +1403,16 @@
switch( this->settings.Modem )
{
case MODEM_FSK:
- // FifoLevel interrupt
+ // FifoEmpty interrupt
if( ( this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes ) > this->settings.FskPacketHandler.ChunkSize )
{
- WriteFifo( ( rxBuffer + 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
+ else
{
// Write the last chunk of data
- WriteFifo( rxBuffer + this->settings.FskPacketHandler.NbBytes, this->settings.FskPacketHandler.Size - this->settings.FskPacketHandler.NbBytes );
+ 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;
@@ -1420,17 +1430,23 @@
void SX1276::OnDio2Irq( void )
{
switch( this->settings.State )
- {
+ {
case RF_RX_RUNNING:
switch( this->settings.Modem )
{
case MODEM_FSK:
+ // Checks if DIO4 is connected. If it is not PreambleDtected is set to true.
+ if( this->dioIrq[4] == NULL )
+ {
+ this->settings.FskPacketHandler.PreambleDetected = true;
+ }
+
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 ) |
@@ -1444,7 +1460,7 @@
{
// 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 ) );
@@ -1465,7 +1481,7 @@
{
// 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 ) );
@@ -1498,7 +1514,7 @@
}
}
else
- {
+ {
// Clear Irq
Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_CADDONE );
if( ( this->RadioEvents != NULL ) && ( this->RadioEvents->CadDone != NULL ) )
@@ -1521,7 +1537,7 @@
if( this->settings.FskPacketHandler.PreambleDetected == false )
{
this->settings.FskPacketHandler.PreambleDetected = true;
- }
+ }
}
break;
case MODEM_LORA: