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Posted to commits@mynewt.apache.org by ja...@apache.org on 2017/05/08 14:32:06 UTC
[11/40] incubator-mynewt-core git commit: MYNEWT-741 Port of
LoRaMac-node library
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/560fa920/hw/drivers/lora/node/radio/sx1276/src/sx1276.c
----------------------------------------------------------------------
diff --git a/hw/drivers/lora/node/radio/sx1276/src/sx1276.c b/hw/drivers/lora/node/radio/sx1276/src/sx1276.c
deleted file mode 100644
index 60007e5..0000000
--- a/hw/drivers/lora/node/radio/sx1276/src/sx1276.c
+++ /dev/null
@@ -1,1826 +0,0 @@
-/*
- / _____) _ | |
-( (____ _____ ____ _| |_ _____ ____| |__
- \____ \| ___ | (_ _) ___ |/ ___) _ \
- _____) ) ____| | | || |_| ____( (___| | | |
-(______/|_____)_|_|_| \__)_____)\____)_| |_|
- (C)2013 Semtech
-
-Description: Generic SX1276 driver implementation
-
-License: Revised BSD License, see LICENSE.TXT file include in the project
-
-Maintainer: Miguel Luis, Gregory Cristian and Wael Guibene
-*/
-#include <assert.h>
-#include <math.h>
-#include <string.h>
-#include "syscfg/syscfg.h"
-#include "hal/hal_gpio.h"
-#include "hal/hal_spi.h"
-#include "os/os.h"
-#include "node/lora.h"
-#include "node/radio.h"
-#include "board/board.h"
-#include "sx1276.h"
-#include "sx1276-board.h"
-
-/*
- * Local types definition
- */
-
-/*!
- * Radio registers definition
- */
-typedef struct
-{
- RadioModems_t Modem;
- uint8_t Addr;
- uint8_t Value;
-}RadioRegisters_t;
-
-/*!
- * FSK bandwidth definition
- */
-typedef struct
-{
- uint32_t bandwidth;
- uint8_t RegValue;
-}FskBandwidth_t;
-
-
-/*
- * Private functions prototypes
- */
-
-/*!
- * Performs the Rx chain calibration for LF and HF bands
- * \remark Must be called just after the reset so all registers are at their
- * default values
- */
-static void RxChainCalibration( void );
-
-/*!
- * \brief Resets the SX1276
- */
-void SX1276Reset( void );
-
-/*!
- * \brief Sets the SX1276 in transmission mode for the given time
- * \param [IN] timeout Transmission timeout [ms] [0: continuous, others timeout]
- */
-void SX1276SetTx( uint32_t timeout );
-
-/*!
- * \brief Writes the buffer contents to the SX1276 FIFO
- *
- * \param [IN] buffer Buffer containing data to be put on the FIFO.
- * \param [IN] size Number of bytes to be written to the FIFO
- */
-void SX1276WriteFifo( uint8_t *buffer, uint8_t size );
-
-/*!
- * \brief Reads the contents of the SX1276 FIFO
- *
- * \param [OUT] buffer Buffer where to copy the FIFO read data.
- * \param [IN] size Number of bytes to be read from the FIFO
- */
-void SX1276ReadFifo( uint8_t *buffer, uint8_t size );
-
-/*!
- * \brief Sets the SX1276 operating mode
- *
- * \param [IN] opMode New operating mode
- */
-void SX1276SetOpMode( uint8_t opMode );
-
-/*
- * SX1276 DIO IRQ callback functions prototype
- */
-
-/*!
- * \brief DIO 0 IRQ callback
- */
-void SX1276OnDio0Irq(void *unused);
-
-/*!
- * \brief DIO 1 IRQ callback
- */
-void SX1276OnDio1Irq(void *unused);
-
-/*!
- * \brief DIO 2 IRQ callback
- */
-void SX1276OnDio2Irq(void *unused);
-
-/*!
- * \brief DIO 3 IRQ callback
- */
-void SX1276OnDio3Irq(void *unused);
-
-/*!
- * \brief DIO 4 IRQ callback
- */
-void SX1276OnDio4Irq(void *unused);
-
-/*!
- * \brief DIO 5 IRQ callback
- */
-void SX1276OnDio5Irq(void *unused);
-
-/*!
- * \brief Tx & Rx timeout timer callback
- */
-void SX1276OnTimeoutIrq(void *unused);
-
-/*
- * Private global constants
- */
-
-/*!
- * Radio hardware registers initialization
- *
- * \remark RADIO_INIT_REGISTERS_VALUE is defined in sx1276-board.h file
- */
-const RadioRegisters_t RadioRegsInit[] = RADIO_INIT_REGISTERS_VALUE;
-
-/*!
- * Constant values need to compute the RSSI value
- */
-#define RSSI_OFFSET_LF -164
-#define RSSI_OFFSET_HF -157
-
-/*!
- * Precomputed FSK bandwidth registers values
- */
-const FskBandwidth_t 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 Bandwidth
-};
-
-/*
- * Private global variables
- */
-
-/*!
- * Radio callbacks variable
- */
-static RadioEvents_t *RadioEvents;
-
-/*!
- * Reception buffer
- */
-static uint8_t RxTxBuffer[RX_BUFFER_SIZE];
-
-/*
- * Public global variables
- */
-
-/*!
- * Radio hardware and global parameters
- */
-SX1276_t SX1276;
-
-/*!
- * Hardware DIO IRQ callback initialization
- */
-DioIrqHandler *DioIrq[] = { SX1276OnDio0Irq, SX1276OnDio1Irq,
- SX1276OnDio2Irq, SX1276OnDio3Irq,
- SX1276OnDio4Irq, NULL };
-
-/*!
- * Tx and Rx timers
- */
-struct hal_timer TxTimeoutTimer;
-struct hal_timer RxTimeoutTimer;
-struct hal_timer RxTimeoutSyncWord;
-
-static uint32_t rx_timeout_sync_delay = -1;
-
-static void
-SX1276RxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
-{
- STATS_INC(lora_stats, rx_success);
-
- if( ( RadioEvents != NULL ) && ( RadioEvents->RxDone != NULL ) )
- {
- RadioEvents->RxDone( payload, size, rssi, snr );
- }
-}
-
-static void
-SX1276RxError( void )
-{
- STATS_INC(lora_stats, rx_error);
-
- if( ( RadioEvents != NULL ) && ( RadioEvents->RxError != NULL ) )
- {
- RadioEvents->RxError( );
- }
-}
-
-static void
-SX1276RxTimeout( void )
-{
- STATS_INC(lora_stats, rx_timeout);
-
- if( ( RadioEvents != NULL ) && ( RadioEvents->RxTimeout != NULL ) )
- {
- RadioEvents->RxTimeout( );
- }
-}
-
-static void
-SX1276TxDone( void )
-{
- STATS_INC(lora_stats, tx_success);
-
- if( ( RadioEvents != NULL ) && ( RadioEvents->TxDone != NULL ) )
- {
- RadioEvents->TxDone( );
- }
-}
-
-static void
-SX1276TxTimeout( void )
-{
- STATS_INC(lora_stats, tx_timeout);
-
- if( ( RadioEvents != NULL ) && ( RadioEvents->TxTimeout != NULL ) )
- {
- RadioEvents->TxTimeout( );
- }
-}
-
-/*
- * Radio driver functions implementation
- */
-
-void SX1276Init( RadioEvents_t *events )
-{
- uint8_t i;
-
- RadioEvents = events;
-
- // Initialize driver timeout timers
- os_cputime_timer_init(&TxTimeoutTimer, SX1276OnTimeoutIrq, NULL);
- os_cputime_timer_init(&RxTimeoutTimer, SX1276OnTimeoutIrq, NULL);
- os_cputime_timer_init(&RxTimeoutSyncWord, SX1276OnTimeoutIrq, NULL);
-
- SX1276Reset( );
-
- RxChainCalibration( );
-
- SX1276SetOpMode( RF_OPMODE_SLEEP );
-
- SX1276IoIrqInit( DioIrq );
-
- for( i = 0; i < sizeof( RadioRegsInit ) / sizeof( RadioRegisters_t ); i++ )
- {
- SX1276SetModem( RadioRegsInit[i].Modem );
- SX1276Write( RadioRegsInit[i].Addr, RadioRegsInit[i].Value );
- }
-
- SX1276SetModem( MODEM_FSK );
-
- SX1276.Settings.State = RF_IDLE;
-}
-
-RadioState_t SX1276GetStatus( void )
-{
- return SX1276.Settings.State;
-}
-
-void SX1276SetChannel( uint32_t freq )
-{
- SX1276.Settings.Channel = freq;
- freq = ( uint32_t )( ( double )freq / ( double )FREQ_STEP );
- SX1276Write( REG_FRFMSB, ( uint8_t )( ( freq >> 16 ) & 0xFF ) );
- SX1276Write( REG_FRFMID, ( uint8_t )( ( freq >> 8 ) & 0xFF ) );
- SX1276Write( REG_FRFLSB, ( uint8_t )( freq & 0xFF ) );
-}
-
-bool SX1276IsChannelFree( RadioModems_t modem, uint32_t freq, int16_t rssiThresh )
-{
- int16_t rssi = 0;
-
- SX1276SetModem( modem );
-
- SX1276SetChannel( freq );
-
- SX1276SetOpMode( RF_OPMODE_RECEIVER );
-
- os_cputime_delay_usecs(1000);
-
- rssi = SX1276ReadRssi( modem );
-
- SX1276SetSleep( );
-
- if( rssi > rssiThresh )
- {
- return false;
- }
- return true;
-}
-
-uint32_t SX1276Random( void )
-{
- uint8_t i;
- uint32_t rnd = 0;
-
- /*
- * Radio setup for random number generation
- */
- // Set LoRa modem ON
- SX1276SetModem( MODEM_LORA );
-
- // Disable LoRa modem interrupts
- SX1276Write( 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
- SX1276SetOpMode( RF_OPMODE_RECEIVER );
-
- for( i = 0; i < 32; i++ )
- {
- os_cputime_delay_usecs(1000);
- // Unfiltered RSSI value reading. Only takes the LSB value
- rnd |= ( ( uint32_t )SX1276Read( REG_LR_RSSIWIDEBAND ) & 0x01 ) << i;
- }
-
- SX1276SetSleep( );
-
- return rnd;
-}
-
-/*!
- * Performs the Rx chain calibration for LF and HF bands
- * \remark Must be called just after the reset so all registers are at their
- * default values
- */
-static void RxChainCalibration( void )
-{
- uint8_t regPaConfigInitVal;
- uint32_t initialFreq;
-
- // Save context
- regPaConfigInitVal = SX1276Read( REG_PACONFIG );
- initialFreq = ( double )( ( ( uint32_t )SX1276Read( REG_FRFMSB ) << 16 ) |
- ( ( uint32_t )SX1276Read( REG_FRFMID ) << 8 ) |
- ( ( uint32_t )SX1276Read( REG_FRFLSB ) ) ) * ( double )FREQ_STEP;
-
- // Cut the PA just in case, RFO output, power = -1 dBm
- SX1276Write( REG_PACONFIG, 0x00 );
-
- // Launch Rx chain calibration for LF band
- SX1276Write( REG_IMAGECAL, ( SX1276Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_MASK ) | RF_IMAGECAL_IMAGECAL_START );
- while( ( SX1276Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_RUNNING ) == RF_IMAGECAL_IMAGECAL_RUNNING )
- {
- }
-
- // Sets a Frequency in HF band
- SX1276SetChannel( 868000000 );
-
- // Launch Rx chain calibration for HF band
- SX1276Write( REG_IMAGECAL, ( SX1276Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_MASK ) | RF_IMAGECAL_IMAGECAL_START );
- while( ( SX1276Read( REG_IMAGECAL ) & RF_IMAGECAL_IMAGECAL_RUNNING ) == RF_IMAGECAL_IMAGECAL_RUNNING )
- {
- }
-
- // Restore context
- SX1276Write( REG_PACONFIG, regPaConfigInitVal );
- SX1276SetChannel( initialFreq );
-}
-
-/*!
- * Returns the known FSK bandwidth registers value
- *
- * \param [IN] bandwidth Bandwidth value in Hz
- * \retval regValue Bandwidth register value.
- */
-static uint8_t 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 SX1276SetRxConfig( 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 )
-{
- SX1276SetModem( modem );
-
- switch( modem )
- {
- case MODEM_FSK:
- {
- SX1276.Settings.Fsk.Bandwidth = bandwidth;
- SX1276.Settings.Fsk.Datarate = datarate;
- SX1276.Settings.Fsk.BandwidthAfc = bandwidthAfc;
- SX1276.Settings.Fsk.FixLen = fixLen;
- SX1276.Settings.Fsk.PayloadLen = payloadLen;
- SX1276.Settings.Fsk.CrcOn = crcOn;
- SX1276.Settings.Fsk.IqInverted = iqInverted;
- SX1276.Settings.Fsk.RxContinuous = rxContinuous;
- SX1276.Settings.Fsk.PreambleLen = preambleLen;
-
- datarate = ( uint16_t )( ( double )XTAL_FREQ / ( double )datarate );
- SX1276Write( REG_BITRATEMSB, ( uint8_t )( datarate >> 8 ) );
- SX1276Write( REG_BITRATELSB, ( uint8_t )( datarate & 0xFF ) );
-
- SX1276Write( REG_RXBW, GetFskBandwidthRegValue( bandwidth ) );
- SX1276Write( REG_AFCBW, GetFskBandwidthRegValue( bandwidthAfc ) );
-
- SX1276Write( REG_PREAMBLEMSB, ( uint8_t )( ( preambleLen >> 8 ) & 0xFF ) );
- SX1276Write( REG_PREAMBLELSB, ( uint8_t )( preambleLen & 0xFF ) );
-
- if( fixLen == 1 )
- {
- SX1276Write( REG_PAYLOADLENGTH, payloadLen );
- }
- else
- {
- SX1276Write( REG_PAYLOADLENGTH, 0xFF ); // Set payload length to the maximum
- }
-
- SX1276Write( REG_PACKETCONFIG1,
- ( SX1276Read( 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:
- {
- if( bandwidth > 2 )
- {
- // Fatal error: When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
- while( 1 );
- }
- bandwidth += 7;
- SX1276.Settings.LoRa.Bandwidth = bandwidth;
- SX1276.Settings.LoRa.Datarate = datarate;
- SX1276.Settings.LoRa.Coderate = coderate;
- SX1276.Settings.LoRa.PreambleLen = preambleLen;
- SX1276.Settings.LoRa.FixLen = fixLen;
- SX1276.Settings.LoRa.PayloadLen = payloadLen;
- SX1276.Settings.LoRa.CrcOn = crcOn;
- SX1276.Settings.LoRa.FreqHopOn = freqHopOn;
- SX1276.Settings.LoRa.HopPeriod = hopPeriod;
- SX1276.Settings.LoRa.IqInverted = iqInverted;
- SX1276.Settings.LoRa.RxContinuous = rxContinuous;
-
- if( datarate > 12 )
- {
- datarate = 12;
- }
- else if( datarate < 6 )
- {
- datarate = 6;
- }
-
- if( ( ( bandwidth == 7 ) && ( ( datarate == 11 ) || ( datarate == 12 ) ) ) ||
- ( ( bandwidth == 8 ) && ( datarate == 12 ) ) )
- {
- SX1276.Settings.LoRa.LowDatarateOptimize = 0x01;
- }
- else
- {
- SX1276.Settings.LoRa.LowDatarateOptimize = 0x00;
- }
-
- SX1276Write( REG_LR_MODEMCONFIG1,
- ( SX1276Read( REG_LR_MODEMCONFIG1 ) &
- RFLR_MODEMCONFIG1_BW_MASK &
- RFLR_MODEMCONFIG1_CODINGRATE_MASK &
- RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
- ( bandwidth << 4 ) | ( coderate << 1 ) |
- fixLen );
-
- SX1276Write( REG_LR_MODEMCONFIG2,
- ( SX1276Read( 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 ) );
-
- SX1276Write( REG_LR_MODEMCONFIG3,
- ( SX1276Read( REG_LR_MODEMCONFIG3 ) &
- RFLR_MODEMCONFIG3_LOWDATARATEOPTIMIZE_MASK ) |
- ( SX1276.Settings.LoRa.LowDatarateOptimize << 3 ) );
-
- SX1276Write( REG_LR_SYMBTIMEOUTLSB, ( uint8_t )( symbTimeout & 0xFF ) );
-
- SX1276Write( REG_LR_PREAMBLEMSB, ( uint8_t )( ( preambleLen >> 8 ) & 0xFF ) );
- SX1276Write( REG_LR_PREAMBLELSB, ( uint8_t )( preambleLen & 0xFF ) );
-
- if( fixLen == 1 )
- {
- SX1276Write( REG_LR_PAYLOADLENGTH, payloadLen );
- }
-
- if( SX1276.Settings.LoRa.FreqHopOn == true )
- {
- SX1276Write( REG_LR_PLLHOP, ( SX1276Read( REG_LR_PLLHOP ) & RFLR_PLLHOP_FASTHOP_MASK ) | RFLR_PLLHOP_FASTHOP_ON );
- SX1276Write( REG_LR_HOPPERIOD, SX1276.Settings.LoRa.HopPeriod );
- }
-
- if( ( bandwidth == 9 ) && ( SX1276.Settings.Channel > RF_MID_BAND_THRESH ) )
- {
- // ERRATA 2.1 - Sensitivity Optimization with a 500 kHz Bandwidth
- SX1276Write( REG_LR_TEST36, 0x02 );
- SX1276Write( REG_LR_TEST3A, 0x64 );
- }
- else if( bandwidth == 9 )
- {
- // ERRATA 2.1 - Sensitivity Optimization with a 500 kHz Bandwidth
- SX1276Write( REG_LR_TEST36, 0x02 );
- SX1276Write( REG_LR_TEST3A, 0x7F );
- }
- else
- {
- // ERRATA 2.1 - Sensitivity Optimization with a 500 kHz Bandwidth
- SX1276Write( REG_LR_TEST36, 0x03 );
- }
-
- if( datarate == 6 )
- {
- SX1276Write( REG_LR_DETECTOPTIMIZE,
- ( SX1276Read( REG_LR_DETECTOPTIMIZE ) &
- RFLR_DETECTIONOPTIMIZE_MASK ) |
- RFLR_DETECTIONOPTIMIZE_SF6 );
- SX1276Write( REG_LR_DETECTIONTHRESHOLD,
- RFLR_DETECTIONTHRESH_SF6 );
- }
- else
- {
- SX1276Write( REG_LR_DETECTOPTIMIZE,
- ( SX1276Read( REG_LR_DETECTOPTIMIZE ) &
- RFLR_DETECTIONOPTIMIZE_MASK ) |
- RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
- SX1276Write( REG_LR_DETECTIONTHRESHOLD,
- RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
- }
- }
- break;
- }
-}
-
-void SX1276SetTxConfig( 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;
-
- SX1276SetModem( modem );
-
- paConfig = SX1276Read( REG_PACONFIG );
- paDac = SX1276Read( REG_PADAC );
-
- paConfig = ( paConfig & RF_PACONFIG_PASELECT_MASK ) | SX1276GetPaSelect( SX1276.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 );
- }
- SX1276Write( REG_PACONFIG, paConfig );
- SX1276Write( REG_PADAC, paDac );
-
- switch( modem )
- {
- case MODEM_FSK:
- {
- SX1276.Settings.Fsk.Power = power;
- SX1276.Settings.Fsk.Fdev = fdev;
- SX1276.Settings.Fsk.Bandwidth = bandwidth;
- SX1276.Settings.Fsk.Datarate = datarate;
- SX1276.Settings.Fsk.PreambleLen = preambleLen;
- SX1276.Settings.Fsk.FixLen = fixLen;
- SX1276.Settings.Fsk.CrcOn = crcOn;
- SX1276.Settings.Fsk.IqInverted = iqInverted;
- SX1276.Settings.Fsk.TxTimeout = timeout;
-
- fdev = ( uint16_t )( ( double )fdev / ( double )FREQ_STEP );
- SX1276Write( REG_FDEVMSB, ( uint8_t )( fdev >> 8 ) );
- SX1276Write( REG_FDEVLSB, ( uint8_t )( fdev & 0xFF ) );
-
- datarate = ( uint16_t )( ( double )XTAL_FREQ / ( double )datarate );
- SX1276Write( REG_BITRATEMSB, ( uint8_t )( datarate >> 8 ) );
- SX1276Write( REG_BITRATELSB, ( uint8_t )( datarate & 0xFF ) );
-
- SX1276Write( REG_PREAMBLEMSB, ( preambleLen >> 8 ) & 0x00FF );
- SX1276Write( REG_PREAMBLELSB, preambleLen & 0xFF );
-
- SX1276Write( REG_PACKETCONFIG1,
- ( SX1276Read( 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:
- {
- SX1276.Settings.LoRa.Power = power;
- if( bandwidth > 2 )
- {
- // Fatal error: When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
- while( 1 );
- }
- bandwidth += 7;
- SX1276.Settings.LoRa.Bandwidth = bandwidth;
- SX1276.Settings.LoRa.Datarate = datarate;
- SX1276.Settings.LoRa.Coderate = coderate;
- SX1276.Settings.LoRa.PreambleLen = preambleLen;
- SX1276.Settings.LoRa.FixLen = fixLen;
- SX1276.Settings.LoRa.FreqHopOn = freqHopOn;
- SX1276.Settings.LoRa.HopPeriod = hopPeriod;
- SX1276.Settings.LoRa.CrcOn = crcOn;
- SX1276.Settings.LoRa.IqInverted = iqInverted;
- SX1276.Settings.LoRa.TxTimeout = timeout;
-
- if( datarate > 12 )
- {
- datarate = 12;
- }
- else if( datarate < 6 )
- {
- datarate = 6;
- }
- if( ( ( bandwidth == 7 ) && ( ( datarate == 11 ) || ( datarate == 12 ) ) ) ||
- ( ( bandwidth == 8 ) && ( datarate == 12 ) ) )
- {
- SX1276.Settings.LoRa.LowDatarateOptimize = 0x01;
- }
- else
- {
- SX1276.Settings.LoRa.LowDatarateOptimize = 0x00;
- }
-
- if( SX1276.Settings.LoRa.FreqHopOn == true )
- {
- SX1276Write( REG_LR_PLLHOP, ( SX1276Read( REG_LR_PLLHOP ) & RFLR_PLLHOP_FASTHOP_MASK ) | RFLR_PLLHOP_FASTHOP_ON );
- SX1276Write( REG_LR_HOPPERIOD, SX1276.Settings.LoRa.HopPeriod );
- }
-
- SX1276Write( REG_LR_MODEMCONFIG1,
- ( SX1276Read( REG_LR_MODEMCONFIG1 ) &
- RFLR_MODEMCONFIG1_BW_MASK &
- RFLR_MODEMCONFIG1_CODINGRATE_MASK &
- RFLR_MODEMCONFIG1_IMPLICITHEADER_MASK ) |
- ( bandwidth << 4 ) | ( coderate << 1 ) |
- fixLen );
-
- SX1276Write( REG_LR_MODEMCONFIG2,
- ( SX1276Read( REG_LR_MODEMCONFIG2 ) &
- RFLR_MODEMCONFIG2_SF_MASK &
- RFLR_MODEMCONFIG2_RXPAYLOADCRC_MASK ) |
- ( datarate << 4 ) | ( crcOn << 2 ) );
-
- SX1276Write( REG_LR_MODEMCONFIG3,
- ( SX1276Read( REG_LR_MODEMCONFIG3 ) &
- RFLR_MODEMCONFIG3_LOWDATARATEOPTIMIZE_MASK ) |
- ( SX1276.Settings.LoRa.LowDatarateOptimize << 3 ) );
-
- SX1276Write( REG_LR_PREAMBLEMSB, ( preambleLen >> 8 ) & 0x00FF );
- SX1276Write( REG_LR_PREAMBLELSB, preambleLen & 0xFF );
-
- if( datarate == 6 )
- {
- SX1276Write( REG_LR_DETECTOPTIMIZE,
- ( SX1276Read( REG_LR_DETECTOPTIMIZE ) &
- RFLR_DETECTIONOPTIMIZE_MASK ) |
- RFLR_DETECTIONOPTIMIZE_SF6 );
- SX1276Write( REG_LR_DETECTIONTHRESHOLD,
- RFLR_DETECTIONTHRESH_SF6 );
- }
- else
- {
- SX1276Write( REG_LR_DETECTOPTIMIZE,
- ( SX1276Read( REG_LR_DETECTOPTIMIZE ) &
- RFLR_DETECTIONOPTIMIZE_MASK ) |
- RFLR_DETECTIONOPTIMIZE_SF7_TO_SF12 );
- SX1276Write( REG_LR_DETECTIONTHRESHOLD,
- RFLR_DETECTIONTHRESH_SF7_TO_SF12 );
- }
- }
- break;
- }
-}
-
-uint32_t SX1276GetTimeOnAir( RadioModems_t modem, uint8_t pktLen )
-{
- uint32_t airTime = 0;
-
- switch( modem )
- {
- case MODEM_FSK:
- {
- airTime = round( ( 8 * ( SX1276.Settings.Fsk.PreambleLen +
- ( ( SX1276Read( REG_SYNCCONFIG ) & ~RF_SYNCCONFIG_SYNCSIZE_MASK ) + 1 ) +
- ( ( SX1276.Settings.Fsk.FixLen == 0x01 ) ? 0.0 : 1.0 ) +
- ( ( ( SX1276Read( REG_PACKETCONFIG1 ) & ~RF_PACKETCONFIG1_ADDRSFILTERING_MASK ) != 0x00 ) ? 1.0 : 0 ) +
- pktLen +
- ( ( SX1276.Settings.Fsk.CrcOn == 0x01 ) ? 2.0 : 0 ) ) /
- SX1276.Settings.Fsk.Datarate ) * 1e3 );
- }
- break;
- case MODEM_LORA:
- {
- double bw = 0.0;
- // REMARK: When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
- switch( SX1276.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 << SX1276.Settings.LoRa.Datarate );
- double ts = 1 / rs;
- // time of preamble
- double tPreamble = ( SX1276.Settings.LoRa.PreambleLen + 4.25 ) * ts;
- // Symbol length of payload and time
- double tmp = ceil( ( 8 * pktLen - 4 * SX1276.Settings.LoRa.Datarate +
- 28 + 16 * SX1276.Settings.LoRa.CrcOn -
- ( SX1276.Settings.LoRa.FixLen ? 20 : 0 ) ) /
- ( double )( 4 * SX1276.Settings.LoRa.Datarate -
- ( ( SX1276.Settings.LoRa.LowDatarateOptimize > 0 ) ? 2 : 0 ) ) ) *
- ( SX1276.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 * 1e3 + 0.999 );
- }
- break;
- }
- return airTime;
-}
-
-void SX1276Send( uint8_t *buffer, uint8_t size )
-{
- uint32_t txTimeout = 0;
-
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- {
- SX1276.Settings.FskPacketHandler.NbBytes = 0;
- SX1276.Settings.FskPacketHandler.Size = size;
-
- if( SX1276.Settings.Fsk.FixLen == false )
- {
- SX1276WriteFifo( ( uint8_t* )&size, 1 );
- }
- else
- {
- SX1276Write( REG_PAYLOADLENGTH, size );
- }
-
- if( ( size > 0 ) && ( size <= 64 ) )
- {
- SX1276.Settings.FskPacketHandler.ChunkSize = size;
- }
- else
- {
- memcpy( RxTxBuffer, buffer, size );
- SX1276.Settings.FskPacketHandler.ChunkSize = 32;
- }
-
- // Write payload buffer
- SX1276WriteFifo( buffer, SX1276.Settings.FskPacketHandler.ChunkSize );
- SX1276.Settings.FskPacketHandler.NbBytes += SX1276.Settings.FskPacketHandler.ChunkSize;
- txTimeout = SX1276.Settings.Fsk.TxTimeout;
- }
- break;
- case MODEM_LORA:
- {
- if( SX1276.Settings.LoRa.IqInverted == true )
- {
- SX1276Write( REG_LR_INVERTIQ, ( ( SX1276Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_ON ) );
- SX1276Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_ON );
- }
- else
- {
- SX1276Write( REG_LR_INVERTIQ, ( ( SX1276Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_OFF ) );
- SX1276Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_OFF );
- }
-
- SX1276.Settings.LoRaPacketHandler.Size = size;
-
- // Initializes the payload size
- SX1276Write( REG_LR_PAYLOADLENGTH, size );
-
- // Full buffer used for Tx
- SX1276Write( REG_LR_FIFOTXBASEADDR, 0 );
- SX1276Write( REG_LR_FIFOADDRPTR, 0 );
-
- // FIFO operations can not take place in Sleep mode
- if( ( SX1276Read( REG_OPMODE ) & ~RF_OPMODE_MASK ) == RF_OPMODE_SLEEP )
- {
- SX1276SetStby( );
- os_cputime_delay_usecs(1000);
- }
- // Write payload buffer
- SX1276WriteFifo( buffer, size );
- txTimeout = SX1276.Settings.LoRa.TxTimeout;
- }
- break;
- }
-
- SX1276SetTx( txTimeout );
-}
-
-void SX1276SetSleep( void )
-{
- os_cputime_timer_stop(&RxTimeoutTimer);
- os_cputime_timer_stop(&TxTimeoutTimer);
-
- SX1276SetOpMode( RF_OPMODE_SLEEP );
- SX1276.Settings.State = RF_IDLE;
-}
-
-void SX1276SetStby( void )
-{
- os_cputime_timer_stop(&RxTimeoutTimer);
- os_cputime_timer_stop(&TxTimeoutTimer);
-
- SX1276SetOpMode( RF_OPMODE_STANDBY );
- SX1276.Settings.State = RF_IDLE;
-}
-
-void SX1276SetRx( uint32_t timeout )
-{
- bool rxContinuous = false;
-
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- {
- rxContinuous = SX1276.Settings.Fsk.RxContinuous;
-
- // DIO0=PayloadReady
- // DIO1=FifoLevel
- // DIO2=SyncAddr
- // DIO3=FifoEmpty
- // DIO4=Preamble
- // DIO5=ModeReady
- SX1276Write( REG_DIOMAPPING1, ( SX1276Read( 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 );
-
- SX1276Write( REG_DIOMAPPING2, ( SX1276Read( REG_DIOMAPPING2 ) & RF_DIOMAPPING2_DIO4_MASK &
- RF_DIOMAPPING2_MAP_MASK ) |
- RF_DIOMAPPING2_DIO4_11 |
- RF_DIOMAPPING2_MAP_PREAMBLEDETECT );
-
- SX1276.Settings.FskPacketHandler.FifoThresh = SX1276Read( REG_FIFOTHRESH ) & 0x3F;
-
- SX1276Write( REG_RXCONFIG, RF_RXCONFIG_AFCAUTO_ON | RF_RXCONFIG_AGCAUTO_ON | RF_RXCONFIG_RXTRIGER_PREAMBLEDETECT );
-
- SX1276.Settings.FskPacketHandler.PreambleDetected = false;
- SX1276.Settings.FskPacketHandler.SyncWordDetected = false;
- SX1276.Settings.FskPacketHandler.NbBytes = 0;
- SX1276.Settings.FskPacketHandler.Size = 0;
- }
- break;
- case MODEM_LORA:
- {
- if( SX1276.Settings.LoRa.IqInverted == true )
- {
- SX1276Write( REG_LR_INVERTIQ, ( ( SX1276Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_ON | RFLR_INVERTIQ_TX_OFF ) );
- SX1276Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_ON );
- }
- else
- {
- SX1276Write( REG_LR_INVERTIQ, ( ( SX1276Read( REG_LR_INVERTIQ ) & RFLR_INVERTIQ_TX_MASK & RFLR_INVERTIQ_RX_MASK ) | RFLR_INVERTIQ_RX_OFF | RFLR_INVERTIQ_TX_OFF ) );
- SX1276Write( REG_LR_INVERTIQ2, RFLR_INVERTIQ2_OFF );
- }
-
- // ERRATA 2.3 - Receiver Spurious Reception of a LoRa Signal
- if( SX1276.Settings.LoRa.Bandwidth < 9 )
- {
- SX1276Write( REG_LR_DETECTOPTIMIZE, SX1276Read( REG_LR_DETECTOPTIMIZE ) & 0x7F );
- SX1276Write( REG_LR_TEST30, 0x00 );
- switch( SX1276.Settings.LoRa.Bandwidth )
- {
- case 0: // 7.8 kHz
- SX1276Write( REG_LR_TEST2F, 0x48 );
- SX1276SetChannel(SX1276.Settings.Channel + 7.81e3 );
- break;
- case 1: // 10.4 kHz
- SX1276Write( REG_LR_TEST2F, 0x44 );
- SX1276SetChannel(SX1276.Settings.Channel + 10.42e3 );
- break;
- case 2: // 15.6 kHz
- SX1276Write( REG_LR_TEST2F, 0x44 );
- SX1276SetChannel(SX1276.Settings.Channel + 15.62e3 );
- break;
- case 3: // 20.8 kHz
- SX1276Write( REG_LR_TEST2F, 0x44 );
- SX1276SetChannel(SX1276.Settings.Channel + 20.83e3 );
- break;
- case 4: // 31.2 kHz
- SX1276Write( REG_LR_TEST2F, 0x44 );
- SX1276SetChannel(SX1276.Settings.Channel + 31.25e3 );
- break;
- case 5: // 41.4 kHz
- SX1276Write( REG_LR_TEST2F, 0x44 );
- SX1276SetChannel(SX1276.Settings.Channel + 41.67e3 );
- break;
- case 6: // 62.5 kHz
- SX1276Write( REG_LR_TEST2F, 0x40 );
- break;
- case 7: // 125 kHz
- SX1276Write( REG_LR_TEST2F, 0x40 );
- break;
- case 8: // 250 kHz
- SX1276Write( REG_LR_TEST2F, 0x40 );
- break;
- }
- }
- else
- {
- SX1276Write( REG_LR_DETECTOPTIMIZE, SX1276Read( REG_LR_DETECTOPTIMIZE ) | 0x80 );
- }
-
- rxContinuous = SX1276.Settings.LoRa.RxContinuous;
-
- if( SX1276.Settings.LoRa.FreqHopOn == true )
- {
- SX1276Write( 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
- SX1276Write( REG_DIOMAPPING1, ( SX1276Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK & RFLR_DIOMAPPING1_DIO2_MASK ) | RFLR_DIOMAPPING1_DIO0_00 | RFLR_DIOMAPPING1_DIO2_00 );
- }
- else
- {
- SX1276Write( 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
- SX1276Write( REG_DIOMAPPING1, ( SX1276Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_00 );
- }
- SX1276Write( REG_LR_FIFORXBASEADDR, 0 );
- SX1276Write( REG_LR_FIFOADDRPTR, 0 );
- }
- break;
- }
-
- memset( RxTxBuffer, 0, ( size_t )RX_BUFFER_SIZE );
-
- SX1276.Settings.State = RF_RX_RUNNING;
- if( timeout != 0 )
- {
- os_cputime_timer_relative(&RxTimeoutTimer, timeout*1000);
- }
-
- if( SX1276.Settings.Modem == MODEM_FSK )
- {
- SX1276SetOpMode( RF_OPMODE_RECEIVER );
-
- if( rxContinuous == false )
- {
- rx_timeout_sync_delay =
- ceil((8.0 * (SX1276.Settings.Fsk.PreambleLen +
- ((SX1276Read(REG_SYNCCONFIG) &
- ~RF_SYNCCONFIG_SYNCSIZE_MASK) + 1.0) + 10.0) /
- (double)SX1276.Settings.Fsk.Datarate) * 1e3) + 4;
- os_cputime_timer_relative(
- &RxTimeoutSyncWord, rx_timeout_sync_delay*1000);
- }
- }
- else
- {
- if( rxContinuous == true )
- {
- SX1276SetOpMode( RFLR_OPMODE_RECEIVER );
- }
- else
- {
- SX1276SetOpMode( RFLR_OPMODE_RECEIVER_SINGLE );
- }
- }
-}
-
-void SX1276SetTx( uint32_t timeout )
-{
- os_cputime_timer_relative(&TxTimeoutTimer, timeout*1000);
-
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- {
- // DIO0=PacketSent
- // DIO1=FifoEmpty
- // DIO2=FifoFull
- // DIO3=FifoEmpty
- // DIO4=LowBat
- // DIO5=ModeReady
- SX1276Write( REG_DIOMAPPING1, ( SX1276Read( REG_DIOMAPPING1 ) & RF_DIOMAPPING1_DIO0_MASK &
- RF_DIOMAPPING1_DIO1_MASK &
- RF_DIOMAPPING1_DIO2_MASK ) |
- RF_DIOMAPPING1_DIO1_01 );
-
- SX1276Write( REG_DIOMAPPING2, ( SX1276Read( REG_DIOMAPPING2 ) & RF_DIOMAPPING2_DIO4_MASK &
- RF_DIOMAPPING2_MAP_MASK ) );
- SX1276.Settings.FskPacketHandler.FifoThresh = SX1276Read( REG_FIFOTHRESH ) & 0x3F;
- }
- break;
- case MODEM_LORA:
- {
- if( SX1276.Settings.LoRa.FreqHopOn == true )
- {
- SX1276Write( 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
- SX1276Write( REG_DIOMAPPING1, ( SX1276Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK & RFLR_DIOMAPPING1_DIO2_MASK ) | RFLR_DIOMAPPING1_DIO0_01 | RFLR_DIOMAPPING1_DIO2_00 );
- }
- else
- {
- SX1276Write( 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
- SX1276Write( REG_DIOMAPPING1, ( SX1276Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_01 );
- }
- }
- break;
- }
-
- SX1276.Settings.State = RF_TX_RUNNING;
- os_cputime_timer_relative(&TxTimeoutTimer, timeout*1000);
- SX1276SetOpMode( RF_OPMODE_TRANSMITTER );
-}
-
-void SX1276StartCad( void )
-{
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- {
-
- }
- break;
- case MODEM_LORA:
- {
- SX1276Write( 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
- SX1276Write( REG_DIOMAPPING1, ( SX1276Read( REG_DIOMAPPING1 ) & RFLR_DIOMAPPING1_DIO0_MASK ) | RFLR_DIOMAPPING1_DIO0_00 );
-
- SX1276.Settings.State = RF_CAD;
- SX1276SetOpMode( RFLR_OPMODE_CAD );
- }
- break;
- default:
- break;
- }
-}
-
-int16_t SX1276ReadRssi( RadioModems_t modem )
-{
- int16_t rssi = 0;
-
- switch( modem )
- {
- case MODEM_FSK:
- rssi = -( SX1276Read( REG_RSSIVALUE ) >> 1 );
- break;
- case MODEM_LORA:
- if( SX1276.Settings.Channel > RF_MID_BAND_THRESH )
- {
- rssi = RSSI_OFFSET_HF + SX1276Read( REG_LR_RSSIVALUE );
- }
- else
- {
- rssi = RSSI_OFFSET_LF + SX1276Read( REG_LR_RSSIVALUE );
- }
- break;
- default:
- rssi = -1;
- break;
- }
- return rssi;
-}
-
-void SX1276Reset( void )
-{
- // Set RESET pin to 0
- hal_gpio_init_out(RADIO_RESET, 0);
-
- // Wait 1 ms
- os_cputime_delay_usecs(1000);
-
- // Configure RESET as input
- hal_gpio_init_in(RADIO_RESET, HAL_GPIO_PULL_NONE);
-
- // Wait 6 ms
- os_cputime_delay_usecs(6000);
-}
-
-void SX1276SetOpMode( uint8_t opMode )
-{
- if( opMode == RF_OPMODE_SLEEP )
- {
- SX1276SetAntSwLowPower( true );
- }
- else
- {
- SX1276SetAntSwLowPower( false );
- if( opMode == RF_OPMODE_TRANSMITTER )
- {
- SX1276SetAntSw( 1 );
- }
- else
- {
- SX1276SetAntSw( 0 );
- }
- }
- SX1276Write( REG_OPMODE, ( SX1276Read( REG_OPMODE ) & RF_OPMODE_MASK ) | opMode );
-}
-
-void SX1276SetModem( RadioModems_t modem )
-{
-
- if( SX1276.Settings.Modem == modem )
- {
- return;
- }
-
- SX1276.Settings.Modem = modem;
- switch( SX1276.Settings.Modem )
- {
- default:
- case MODEM_FSK:
- SX1276SetOpMode( RF_OPMODE_SLEEP );
- SX1276Write( REG_OPMODE, ( SX1276Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_MASK ) | RFLR_OPMODE_LONGRANGEMODE_OFF );
-
- SX1276Write( REG_DIOMAPPING1, 0x00 );
- SX1276Write( REG_DIOMAPPING2, 0x30 ); // DIO5=ModeReady
- break;
- case MODEM_LORA:
- SX1276SetOpMode( RF_OPMODE_SLEEP );
- SX1276Write( REG_OPMODE, ( SX1276Read( REG_OPMODE ) & RFLR_OPMODE_LONGRANGEMODE_MASK ) | RFLR_OPMODE_LONGRANGEMODE_ON );
-
- SX1276Write( REG_DIOMAPPING1, 0x00 );
- SX1276Write( REG_DIOMAPPING2, 0x00 );
- break;
- }
-}
-
-void SX1276Write( uint8_t addr, uint8_t data )
-{
- SX1276WriteBuffer( addr, &data, 1 );
-}
-
-uint8_t SX1276Read( uint8_t addr )
-{
- uint8_t data;
- SX1276ReadBuffer( addr, &data, 1 );
- return data;
-}
-
-void SX1276WriteBuffer( uint8_t addr, uint8_t *buffer, uint8_t size )
-{
- uint8_t i;
-
- hal_gpio_write(RADIO_NSS, 0);
-
- hal_spi_tx_val(RADIO_SPI_IDX, addr | 0x80);
- for( i = 0; i < size; i++ )
- {
- hal_spi_tx_val(RADIO_SPI_IDX, buffer[i]);
- }
-
- hal_gpio_write(RADIO_NSS, 1);
-}
-
-void SX1276ReadBuffer( uint8_t addr, uint8_t *buffer, uint8_t size )
-{
- uint8_t i;
-
- hal_gpio_write(RADIO_NSS, 0);
-
- hal_spi_tx_val(RADIO_SPI_IDX, addr & 0x7f);
- for( i = 0; i < size; i++ )
- {
- buffer[i] = hal_spi_tx_val(RADIO_SPI_IDX, 0);
- }
-
- hal_gpio_write(RADIO_NSS, 1);
-}
-
-void SX1276WriteFifo( uint8_t *buffer, uint8_t size )
-{
- SX1276WriteBuffer( 0, buffer, size );
-}
-
-void SX1276ReadFifo( uint8_t *buffer, uint8_t size )
-{
- SX1276ReadBuffer( 0, buffer, size );
-}
-
-void SX1276SetMaxPayloadLength( RadioModems_t modem, uint8_t max )
-{
- SX1276SetModem( modem );
-
- switch( modem )
- {
- case MODEM_FSK:
- if( SX1276.Settings.Fsk.FixLen == false )
- {
- SX1276Write( REG_PAYLOADLENGTH, max );
- }
- break;
- case MODEM_LORA:
- SX1276Write( REG_LR_PAYLOADMAXLENGTH, max );
- break;
- }
-}
-
-void SX1276OnTimeoutIrq(void *unused)
-{
- switch( SX1276.Settings.State )
- {
- case RF_RX_RUNNING:
- if( SX1276.Settings.Modem == MODEM_FSK )
- {
- SX1276.Settings.FskPacketHandler.PreambleDetected = false;
- SX1276.Settings.FskPacketHandler.SyncWordDetected = false;
- SX1276.Settings.FskPacketHandler.NbBytes = 0;
- SX1276.Settings.FskPacketHandler.Size = 0;
-
- // Clear Irqs
- SX1276Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
- RF_IRQFLAGS1_PREAMBLEDETECT |
- RF_IRQFLAGS1_SYNCADDRESSMATCH );
- SX1276Write( REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN );
-
- if( SX1276.Settings.Fsk.RxContinuous == true )
- {
- // Continuous mode restart Rx chain
- SX1276Write( REG_RXCONFIG, SX1276Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
- assert(rx_timeout_sync_delay != (uint32_t)-1);
- os_cputime_timer_relative(
- &RxTimeoutSyncWord, rx_timeout_sync_delay*1000);
- }
- else
- {
- SX1276.Settings.State = RF_IDLE;
- os_cputime_timer_stop(&RxTimeoutSyncWord);
- }
- }
- SX1276RxTimeout( );
- break;
- case RF_TX_RUNNING:
- SX1276.Settings.State = RF_IDLE;
- SX1276TxTimeout( );
- break;
- default:
- break;
- }
-}
-
-void SX1276OnDio0Irq(void *unused)
-{
- volatile uint8_t irqFlags = 0;
-
- switch( SX1276.Settings.State )
- {
- case RF_RX_RUNNING:
- //TimerStop( &RxTimeoutTimer );
- // RxDone interrupt
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- if( SX1276.Settings.Fsk.CrcOn == true )
- {
- irqFlags = SX1276Read( REG_IRQFLAGS2 );
- if( ( irqFlags & RF_IRQFLAGS2_CRCOK ) != RF_IRQFLAGS2_CRCOK )
- {
- // Clear Irqs
- SX1276Write( REG_IRQFLAGS1, RF_IRQFLAGS1_RSSI |
- RF_IRQFLAGS1_PREAMBLEDETECT |
- RF_IRQFLAGS1_SYNCADDRESSMATCH );
- SX1276Write( REG_IRQFLAGS2, RF_IRQFLAGS2_FIFOOVERRUN );
-
- os_cputime_timer_stop(&RxTimeoutTimer);
-
- if( SX1276.Settings.Fsk.RxContinuous == false )
- {
- os_cputime_timer_stop(&RxTimeoutSyncWord);
- SX1276.Settings.State = RF_IDLE;
- }
- else
- {
- // Continuous mode restart Rx chain
- SX1276Write( REG_RXCONFIG, SX1276Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
- assert(rx_timeout_sync_delay != (uint32_t)-1);
- os_cputime_timer_relative(
- &RxTimeoutSyncWord, rx_timeout_sync_delay*1000);
- }
-
- SX1276RxError( );
- SX1276.Settings.FskPacketHandler.PreambleDetected = false;
- SX1276.Settings.FskPacketHandler.SyncWordDetected = false;
- SX1276.Settings.FskPacketHandler.NbBytes = 0;
- SX1276.Settings.FskPacketHandler.Size = 0;
- break;
- }
- }
-
- // Read received packet size
- if( ( SX1276.Settings.FskPacketHandler.Size == 0 ) && ( SX1276.Settings.FskPacketHandler.NbBytes == 0 ) )
- {
- if( SX1276.Settings.Fsk.FixLen == false )
- {
- SX1276ReadFifo( ( uint8_t* )&SX1276.Settings.FskPacketHandler.Size, 1 );
- }
- else
- {
- SX1276.Settings.FskPacketHandler.Size = SX1276Read( REG_PAYLOADLENGTH );
- }
- SX1276ReadFifo( RxTxBuffer + SX1276.Settings.FskPacketHandler.NbBytes, SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes );
- SX1276.Settings.FskPacketHandler.NbBytes += ( SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes );
- }
- else
- {
- SX1276ReadFifo( RxTxBuffer + SX1276.Settings.FskPacketHandler.NbBytes, SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes );
- SX1276.Settings.FskPacketHandler.NbBytes += ( SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes );
- }
-
- if( SX1276.Settings.Fsk.RxContinuous == false )
- {
- SX1276.Settings.State = RF_IDLE;
- assert(rx_timeout_sync_delay != (uint32_t)-1);
- os_cputime_timer_relative(
- &RxTimeoutSyncWord, rx_timeout_sync_delay*1000);
-
- }
- else
- {
- // Continuous mode restart Rx chain
- SX1276Write( REG_RXCONFIG, SX1276Read( REG_RXCONFIG ) | RF_RXCONFIG_RESTARTRXWITHOUTPLLLOCK );
- }
- os_cputime_timer_stop(&RxTimeoutTimer);
-
- SX1276RxDone( RxTxBuffer, SX1276.Settings.FskPacketHandler.Size, SX1276.Settings.FskPacketHandler.RssiValue, 0 );
- SX1276.Settings.FskPacketHandler.PreambleDetected = false;
- SX1276.Settings.FskPacketHandler.SyncWordDetected = false;
- SX1276.Settings.FskPacketHandler.NbBytes = 0;
- SX1276.Settings.FskPacketHandler.Size = 0;
- break;
- case MODEM_LORA:
- {
- int8_t snr = 0;
-
- // Clear Irq
- SX1276Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_RXDONE);
-
- irqFlags = SX1276Read( REG_LR_IRQFLAGS );
- if( ( irqFlags & RFLR_IRQFLAGS_PAYLOADCRCERROR_MASK ) == RFLR_IRQFLAGS_PAYLOADCRCERROR )
- {
- // Clear Irq
- SX1276Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_PAYLOADCRCERROR);
-
- if( SX1276.Settings.LoRa.RxContinuous == false )
- {
- SX1276.Settings.State = RF_IDLE;
- }
- os_cputime_timer_stop(&RxTimeoutTimer);
-
- SX1276RxError( );
- break;
- }
-
- SX1276.Settings.LoRaPacketHandler.SnrValue = SX1276Read( REG_LR_PKTSNRVALUE );
- if( SX1276.Settings.LoRaPacketHandler.SnrValue & 0x80 ) // The SNR sign bit is 1
- {
- // Invert and divide by 4
- snr = ( ( ~SX1276.Settings.LoRaPacketHandler.SnrValue + 1 ) & 0xFF ) >> 2;
- snr = -snr;
- }
- else
- {
- // Divide by 4
- snr = ( SX1276.Settings.LoRaPacketHandler.SnrValue & 0xFF ) >> 2;
- }
-
- int16_t rssi = SX1276Read( REG_LR_PKTRSSIVALUE );
- if( snr < 0 )
- {
- if( SX1276.Settings.Channel > RF_MID_BAND_THRESH )
- {
- SX1276.Settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_HF + rssi + ( rssi >> 4 ) +
- snr;
- }
- else
- {
- SX1276.Settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_LF + rssi + ( rssi >> 4 ) +
- snr;
- }
- }
- else
- {
- if( SX1276.Settings.Channel > RF_MID_BAND_THRESH )
- {
- SX1276.Settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_HF + rssi + ( rssi >> 4 );
- }
- else
- {
- SX1276.Settings.LoRaPacketHandler.RssiValue = RSSI_OFFSET_LF + rssi + ( rssi >> 4 );
- }
- }
-
- SX1276.Settings.LoRaPacketHandler.Size = SX1276Read( REG_LR_RXNBBYTES );
- SX1276ReadFifo( RxTxBuffer, SX1276.Settings.LoRaPacketHandler.Size );
-
- if( SX1276.Settings.LoRa.RxContinuous == false )
- {
- SX1276.Settings.State = RF_IDLE;
- }
- os_cputime_timer_stop(&RxTimeoutTimer);
-
- SX1276RxDone( RxTxBuffer, SX1276.Settings.LoRaPacketHandler.Size, SX1276.Settings.LoRaPacketHandler.RssiValue, SX1276.Settings.LoRaPacketHandler.SnrValue );
- }
- break;
- default:
- break;
- }
- break;
- case RF_TX_RUNNING:
- os_cputime_timer_stop(&TxTimeoutTimer);
- // TxDone interrupt
- switch( SX1276.Settings.Modem )
- {
- case MODEM_LORA:
- // Clear Irq
- SX1276Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_TXDONE );
- // Intentional fall through
- case MODEM_FSK:
- default:
- SX1276.Settings.State = RF_IDLE;
- SX1276TxDone( );
- break;
- }
- break;
- default:
- break;
- }
-}
-
-void SX1276OnDio1Irq(void *unused)
-{
- switch( SX1276.Settings.State )
- {
- case RF_RX_RUNNING:
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- // FifoLevel interrupt
- // Read received packet size
- if( ( SX1276.Settings.FskPacketHandler.Size == 0 ) && ( SX1276.Settings.FskPacketHandler.NbBytes == 0 ) )
- {
- if( SX1276.Settings.Fsk.FixLen == false )
- {
- SX1276ReadFifo( ( uint8_t* )&SX1276.Settings.FskPacketHandler.Size, 1 );
- }
- else
- {
- SX1276.Settings.FskPacketHandler.Size = SX1276Read( REG_PAYLOADLENGTH );
- }
- }
-
- if( ( SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes ) > SX1276.Settings.FskPacketHandler.FifoThresh )
- {
- SX1276ReadFifo( ( RxTxBuffer + SX1276.Settings.FskPacketHandler.NbBytes ), SX1276.Settings.FskPacketHandler.FifoThresh );
- SX1276.Settings.FskPacketHandler.NbBytes += SX1276.Settings.FskPacketHandler.FifoThresh;
- }
- else
- {
- SX1276ReadFifo( ( RxTxBuffer + SX1276.Settings.FskPacketHandler.NbBytes ), SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes );
- SX1276.Settings.FskPacketHandler.NbBytes += ( SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes );
- }
- break;
- case MODEM_LORA:
- // Sync time out
- os_cputime_timer_stop(&RxTimeoutTimer);
- SX1276.Settings.State = RF_IDLE;
- SX1276RxTimeout( );
- break;
- default:
- break;
- }
- break;
- case RF_TX_RUNNING:
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- // FifoEmpty interrupt
- if( ( SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes ) > SX1276.Settings.FskPacketHandler.ChunkSize )
- {
- SX1276WriteFifo( ( RxTxBuffer + SX1276.Settings.FskPacketHandler.NbBytes ), SX1276.Settings.FskPacketHandler.ChunkSize );
- SX1276.Settings.FskPacketHandler.NbBytes += SX1276.Settings.FskPacketHandler.ChunkSize;
- }
- else
- {
- // Write the last chunk of data
- SX1276WriteFifo( RxTxBuffer + SX1276.Settings.FskPacketHandler.NbBytes, SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes );
- SX1276.Settings.FskPacketHandler.NbBytes += SX1276.Settings.FskPacketHandler.Size - SX1276.Settings.FskPacketHandler.NbBytes;
- }
- break;
- case MODEM_LORA:
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
-}
-
-void SX1276OnDio2Irq(void *unused)
-{
- switch( SX1276.Settings.State )
- {
- case RF_RX_RUNNING:
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- if( ( SX1276.Settings.FskPacketHandler.PreambleDetected == true ) && ( SX1276.Settings.FskPacketHandler.SyncWordDetected == false ) )
- {
- os_cputime_timer_stop(&RxTimeoutSyncWord);
-
- SX1276.Settings.FskPacketHandler.SyncWordDetected = true;
-
- SX1276.Settings.FskPacketHandler.RssiValue = -( SX1276Read( REG_RSSIVALUE ) >> 1 );
-
- SX1276.Settings.FskPacketHandler.AfcValue = ( int32_t )( double )( ( ( uint16_t )SX1276Read( REG_AFCMSB ) << 8 ) |
- ( uint16_t )SX1276Read( REG_AFCLSB ) ) *
- ( double )FREQ_STEP;
- SX1276.Settings.FskPacketHandler.RxGain = ( SX1276Read( REG_LNA ) >> 5 ) & 0x07;
- }
- break;
- case MODEM_LORA:
- if( SX1276.Settings.LoRa.FreqHopOn == true )
- {
- // Clear Irq
- SX1276Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL);
-
- if( ( RadioEvents != NULL ) && ( RadioEvents->FhssChangeChannel != NULL ) )
- {
- RadioEvents->FhssChangeChannel( ( SX1276Read( REG_LR_HOPCHANNEL ) & RFLR_HOPCHANNEL_CHANNEL_MASK ) );
- }
- }
- break;
- default:
- break;
- }
- break;
- case RF_TX_RUNNING:
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- break;
- case MODEM_LORA:
- if( SX1276.Settings.LoRa.FreqHopOn == true )
- {
- // Clear Irq
- SX1276Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_FHSSCHANGEDCHANNEL);
-
- if( ( RadioEvents != NULL ) && ( RadioEvents->FhssChangeChannel != NULL ) )
- {
- RadioEvents->FhssChangeChannel( ( SX1276Read( REG_LR_HOPCHANNEL ) & RFLR_HOPCHANNEL_CHANNEL_MASK ) );
- }
- }
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
-}
-
-void SX1276OnDio3Irq(void *unused)
-{
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- break;
- case MODEM_LORA:
- if( ( SX1276Read( REG_LR_IRQFLAGS ) & RFLR_IRQFLAGS_CADDETECTED ) == RFLR_IRQFLAGS_CADDETECTED )
- {
- // Clear Irq
- SX1276Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_CADDETECTED | RFLR_IRQFLAGS_CADDONE);
- if( ( RadioEvents != NULL ) && ( RadioEvents->CadDone != NULL ) )
- {
- RadioEvents->CadDone( true );
- }
- }
- else
- {
- // Clear Irq
- SX1276Write( REG_LR_IRQFLAGS, RFLR_IRQFLAGS_CADDONE);
- if( ( RadioEvents != NULL ) && ( RadioEvents->CadDone != NULL ) )
- {
- RadioEvents->CadDone( false );
- }
- }
- break;
- default:
- break;
- }
-}
-
-void SX1276OnDio4Irq(void *unused)
-{
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- {
- if( SX1276.Settings.FskPacketHandler.PreambleDetected == false )
- {
- SX1276.Settings.FskPacketHandler.PreambleDetected = true;
- }
- }
- break;
- case MODEM_LORA:
- break;
- default:
- break;
- }
-}
-
-void SX1276OnDio5Irq(void *unused)
-{
- switch( SX1276.Settings.Modem )
- {
- case MODEM_FSK:
- break;
- case MODEM_LORA:
- break;
- default:
- break;
- }
-}
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-core/blob/560fa920/hw/drivers/lora/node/radio/sx1276/src/sx1276.h
----------------------------------------------------------------------
diff --git a/hw/drivers/lora/node/radio/sx1276/src/sx1276.h b/hw/drivers/lora/node/radio/sx1276/src/sx1276.h
deleted file mode 100644
index 9c82652..0000000
--- a/hw/drivers/lora/node/radio/sx1276/src/sx1276.h
+++ /dev/null
@@ -1,364 +0,0 @@
-/*
- / _____) _ | |
-( (____ _____ ____ _| |_ _____ ____| |__
- \____ \| ___ | (_ _) ___ |/ ___) _ \
- _____) ) ____| | | || |_| ____( (___| | | |
-(______/|_____)_|_|_| \__)_____)\____)_| |_|
- (C)2013 Semtech
-
-Description: Generic SX1276 driver implementation
-
-License: Revised BSD License, see LICENSE.TXT file include in the project
-
-Maintainer: Miguel Luis and Gregory Cristian
-*/
-#ifndef __SX1276_H__
-#define __SX1276_H__
-#include <stdint.h>
-#include <stdbool.h>
-#include "node/radio.h"
-#include "sx1276Regs-Fsk.h"
-#include "sx1276Regs-LoRa.h"
-
-/*!
- * Radio FSK modem parameters
- */
-typedef struct
-{
- int8_t Power;
- uint32_t Fdev;
- uint32_t Bandwidth;
- uint32_t BandwidthAfc;
- uint32_t Datarate;
- uint16_t PreambleLen;
- bool FixLen;
- uint8_t PayloadLen;
- bool CrcOn;
- bool IqInverted;
- bool RxContinuous;
- uint32_t TxTimeout;
-}RadioFskSettings_t;
-
-/*!
- * Radio FSK packet handler state
- */
-typedef struct
-{
- uint8_t PreambleDetected;
- uint8_t SyncWordDetected;
- int8_t RssiValue;
- int32_t AfcValue;
- uint8_t RxGain;
- uint16_t Size;
- uint16_t NbBytes;
- uint8_t FifoThresh;
- uint8_t ChunkSize;
-}RadioFskPacketHandler_t;
-
-/*!
- * Radio LoRa modem parameters
- */
-typedef struct
-{
- int8_t Power;
- uint32_t Bandwidth;
- uint32_t Datarate;
- bool LowDatarateOptimize;
- uint8_t Coderate;
- uint16_t PreambleLen;
- bool FixLen;
- uint8_t PayloadLen;
- bool CrcOn;
- bool FreqHopOn;
- uint8_t HopPeriod;
- bool IqInverted;
- bool RxContinuous;
- uint32_t TxTimeout;
-}RadioLoRaSettings_t;
-
-/*!
- * Radio LoRa packet handler state
- */
-typedef struct
-{
- int8_t SnrValue;
- int16_t RssiValue;
- uint8_t Size;
-}RadioLoRaPacketHandler_t;
-
-/*!
- * Radio Settings
- */
-typedef struct
-{
- RadioState_t State;
- RadioModems_t Modem;
- uint32_t Channel;
- RadioFskSettings_t Fsk;
- RadioFskPacketHandler_t FskPacketHandler;
- RadioLoRaSettings_t LoRa;
- RadioLoRaPacketHandler_t LoRaPacketHandler;
-}RadioSettings_t;
-
-/*!
- * Radio hardware and global parameters
- */
-typedef struct SX1276_s
-{
- RadioSettings_t Settings;
-}SX1276_t;
-
-/*!
- * Hardware IO IRQ callback function definition
- */
-typedef void ( DioIrqHandler )(void *arg);
-
-/*!
- * SX1276 definitions
- */
-#define XTAL_FREQ 32000000
-#define FREQ_STEP 61.03515625
-
-#define RX_BUFFER_SIZE 256
-
-/*!
- * ============================================================================
- * Public functions prototypes
- * ============================================================================
- */
-
-/*!
- * \brief Initializes the radio
- *
- * \param [IN] events Structure containing the driver callback functions
- */
-void SX1276Init( RadioEvents_t *events );
-
-/*!
- * Return current radio status
- *
- * \param status Radio status.[RF_IDLE, RF_RX_RUNNING, RF_TX_RUNNING]
- */
-RadioState_t SX1276GetStatus( void );
-
-/*!
- * \brief Configures the radio with the given modem
- *
- * \param [IN] modem Modem to be used [0: FSK, 1: LoRa]
- */
-void SX1276SetModem( RadioModems_t modem );
-
-/*!
- * \brief Sets the channels configuration
- *
- * \param [IN] freq Channel RF frequency
- */
-void SX1276SetChannel( uint32_t freq );
-
-/*!
- * \brief Sets the channels configuration
- *
- * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa]
- * \param [IN] freq Channel RF frequency
- * \param [IN] rssiThresh RSSI threshold
- *
- * \retval isFree [true: Channel is free, false: Channel is not free]
- */
-bool SX1276IsChannelFree( RadioModems_t modem, uint32_t freq, int16_t rssiThresh );
-
-/*!
- * \brief Generates a 32 bits random value based on the RSSI readings
- *
- * \remark This function sets the radio in LoRa modem mode and disables
- * all interrupts.
- * After calling this function either SX1276SetRxConfig or
- * SX1276SetTxConfig functions must be called.
- *
- * \retval randomValue 32 bits random value
- */
-uint32_t SX1276Random( void );
-
-/*!
- * \brief Sets the reception parameters
- *
- * \remark When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
- *
- * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa]
- * \param [IN] bandwidth Sets the bandwidth
- * FSK : >= 2600 and <= 250000 Hz
- * LoRa: [0: 125 kHz, 1: 250 kHz,
- * 2: 500 kHz, 3: Reserved]
- * \param [IN] datarate Sets the Datarate
- * FSK : 600..300000 bits/s
- * LoRa: [6: 64, 7: 128, 8: 256, 9: 512,
- * 10: 1024, 11: 2048, 12: 4096 chips]
- * \param [IN] coderate Sets the coding rate (LoRa only)
- * FSK : N/A ( set to 0 )
- * LoRa: [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8]
- * \param [IN] bandwidthAfc Sets the AFC Bandwidth (FSK only)
- * FSK : >= 2600 and <= 250000 Hz
- * LoRa: N/A ( set to 0 )
- * \param [IN] preambleLen Sets the Preamble length
- * FSK : Number of bytes
- * LoRa: Length in symbols (the hardware adds 4 more symbols)
- * \param [IN] symbTimeout Sets the RxSingle timeout value (LoRa only)
- * FSK : N/A ( set to 0 )
- * LoRa: timeout in symbols
- * \param [IN] fixLen Fixed length packets [0: variable, 1: fixed]
- * \param [IN] payloadLen Sets payload length when fixed lenght is used
- * \param [IN] crcOn Enables/Disables the CRC [0: OFF, 1: ON]
- * \param [IN] FreqHopOn Enables disables the intra-packet frequency hopping
- * FSK : N/A ( set to 0 )
- * LoRa: [0: OFF, 1: ON]
- * \param [IN] HopPeriod Number of symbols bewteen each hop
- * FSK : N/A ( set to 0 )
- * LoRa: Number of symbols
- * \param [IN] iqInverted Inverts IQ signals (LoRa only)
- * FSK : N/A ( set to 0 )
- * LoRa: [0: not inverted, 1: inverted]
- * \param [IN] rxContinuous Sets the reception in continuous mode
- * [false: single mode, true: continuous mode]
- */
-void SX1276SetRxConfig( 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 );
-
-/*!
- * \brief Sets the transmission parameters
- *
- * \remark When using LoRa modem only bandwidths 125, 250 and 500 kHz are supported
- *
- * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa]
- * \param [IN] power Sets the output power [dBm]
- * \param [IN] fdev Sets the frequency deviation (FSK only)
- * FSK : [Hz]
- * LoRa: 0
- * \param [IN] bandwidth Sets the bandwidth (LoRa only)
- * FSK : 0
- * LoRa: [0: 125 kHz, 1: 250 kHz,
- * 2: 500 kHz, 3: Reserved]
- * \param [IN] datarate Sets the Datarate
- * FSK : 600..300000 bits/s
- * LoRa: [6: 64, 7: 128, 8: 256, 9: 512,
- * 10: 1024, 11: 2048, 12: 4096 chips]
- * \param [IN] coderate Sets the coding rate (LoRa only)
- * FSK : N/A ( set to 0 )
- * LoRa: [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8]
- * \param [IN] preambleLen Sets the preamble length
- * FSK : Number of bytes
- * LoRa: Length in symbols (the hardware adds 4 more symbols)
- * \param [IN] fixLen Fixed length packets [0: variable, 1: fixed]
- * \param [IN] crcOn Enables disables the CRC [0: OFF, 1: ON]
- * \param [IN] FreqHopOn Enables disables the intra-packet frequency hopping
- * FSK : N/A ( set to 0 )
- * LoRa: [0: OFF, 1: ON]
- * \param [IN] HopPeriod Number of symbols bewteen each hop
- * FSK : N/A ( set to 0 )
- * LoRa: Number of symbols
- * \param [IN] iqInverted Inverts IQ signals (LoRa only)
- * FSK : N/A ( set to 0 )
- * LoRa: [0: not inverted, 1: inverted]
- * \param [IN] timeout Transmission timeout [ms]
- */
-void SX1276SetTxConfig( 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 );
-
-/*!
- * \brief Computes the packet time on air in us for the given payload
- *
- * \Remark Can only be called once SetRxConfig or SetTxConfig have been called
- *
- * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa]
- * \param [IN] pktLen Packet payload length
- *
- * \retval airTime Computed airTime (us) for the given packet payload length
- */
-uint32_t SX1276GetTimeOnAir( RadioModems_t modem, uint8_t pktLen );
-
-/*!
- * \brief Sends the buffer of size. Prepares the packet to be sent and sets
- * the radio in transmission
- *
- * \param [IN]: buffer Buffer pointer
- * \param [IN]: size Buffer size
- */
-void SX1276Send( uint8_t *buffer, uint8_t size );
-
-/*!
- * \brief Sets the radio in sleep mode
- */
-void SX1276SetSleep( void );
-
-/*!
- * \brief Sets the radio in standby mode
- */
-void SX1276SetStby( void );
-
-/*!
- * \brief Sets the radio in reception mode for the given time
- * \param [IN] timeout Reception timeout [ms] [0: continuous, others timeout]
- */
-void SX1276SetRx( uint32_t timeout );
-
-/*!
- * \brief Start a Channel Activity Detection
- */
-void SX1276StartCad( void );
-
-/*!
- * \brief Reads the current RSSI value
- *
- * \retval rssiValue Current RSSI value in [dBm]
- */
-int16_t SX1276ReadRssi( RadioModems_t modem );
-
-/*!
- * \brief Writes the radio register at the specified address
- *
- * \param [IN]: addr Register address
- * \param [IN]: data New register value
- */
-void SX1276Write( uint8_t addr, uint8_t data );
-
-/*!
- * \brief Reads the radio register at the specified address
- *
- * \param [IN]: addr Register address
- * \retval data Register value
- */
-uint8_t SX1276Read( uint8_t addr );
-
-/*!
- * \brief Writes multiple radio registers starting at address
- *
- * \param [IN] addr First Radio register address
- * \param [IN] buffer Buffer containing the new register's values
- * \param [IN] size Number of registers to be written
- */
-void SX1276WriteBuffer( uint8_t addr, uint8_t *buffer, uint8_t size );
-
-/*!
- * \brief Reads multiple radio registers starting at address
- *
- * \param [IN] addr First Radio register address
- * \param [OUT] buffer Buffer where to copy the registers data
- * \param [IN] size Number of registers to be read
- */
-void SX1276ReadBuffer( uint8_t addr, uint8_t *buffer, uint8_t size );
-
-/*!
- * \brief Sets the maximum payload length.
- *
- * \param [IN] modem Radio modem to be used [0: FSK, 1: LoRa]
- * \param [IN] max Maximum payload length in bytes
- */
-void SX1276SetMaxPayloadLength( RadioModems_t modem, uint8_t max );
-
-#endif // __SX1276_H__