Kevin Barnett
Fork with intent to refactor and add support for American 902-928(915) Frequency Bands
Diff: sx1276/sx1276-mbed-hal.cpp
- Revision:
- 36:f2b885b6f33e
- Parent:
- 35:c278a826a8e2
- Child:
- 38:d9189d958db8
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sx1276/sx1276-mbed-hal.cpp Sat May 06 12:10:11 2017 +0000
@@ -0,0 +1,416 @@
+/*
+ / _____) _ | |
+( (____ _____ ____ _| |_ _____ ____| |__
+ \____ \| ___ | (_ _) ___ |/ ___) _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+ (C) 2014 Semtech
+
+Description: -
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainers: Miguel Luis, Gregory Cristian and Nicolas Huguenin
+*/
+
+/*
+ * additional development to make it more generic across multiple os versions
+ * (c) 2017 Helmut Tschemernjak
+ * 30826 Garbsen (Hannover) Germany
+ */
+
+#include "sx1276-mbed-hal.h"
+
+const RadioRegisters_t SX1276Generic::RadioRegsInit[] = RADIO_INIT_REGISTERS_VALUE;
+
+SX1276Generic::SX1276Generic( RadioEvents_t *events, BoardType_t board,
+ PinName mosi, PinName miso, PinName sclk, PinName nss, PinName reset,
+ PinName dio0, PinName dio1, PinName dio2, PinName dio3, PinName dio4, PinName dio5,
+ PinName antSwitch, PinName antSwitchTX, PinName antSwitchTXBoost, PinName tcxo)
+ : SX1276( events)
+{
+ this->RadioEvents = events;
+ boardConnected = board;
+
+ _antSwitch = NULL;
+ _antSwitchTX = NULL;
+ _antSwitchTXBoost = NULL;
+
+ _tcxo = NULL;
+ if (tcxo != NC)
+ _tcxo = new DigitalOut(tcxo);
+
+ switch(boardConnected) {
+ case SX1276MB1MAS:
+ case SX1276MB1LAS:
+ _antSwitch = new DigitalInOut(antSwitch);
+ break;
+ case RFM95_SX1276:
+ break;
+ case MURATA_SX1276:
+ _antSwitch = new DigitalInOut(antSwitch);
+ _antSwitchTX = new DigitalInOut(antSwitchTX);
+ _antSwitchTXBoost = new DigitalInOut(antSwitchTXBoost);
+ break;
+ default:
+ break;
+ }
+ _spi = new SPI(mosi, miso, sclk );
+ _nss = new DigitalOut(nss);
+
+ _reset = new DigitalInOut(reset);
+
+ _dio0 = NULL;
+ _dio1 = NULL;
+ _dio2 = NULL;
+ _dio3 = NULL;
+ _dio4 = NULL;
+ _dio5 = NULL;
+ if (dio0 != NC)
+ _dio0 = new InterruptIn(dio0);
+ if (dio1 != NC)
+ _dio1 = new InterruptIn(dio1);
+ if (dio2 != NC)
+ _dio2 = new InterruptIn(dio2);
+ if (dio3 != NC)
+ _dio3 = new InterruptIn(dio3);
+ if (dio4 != NC)
+ _dio4 = new InterruptIn(dio4);
+ if (dio5 != NC)
+ _dio5 = new DigitalIn(dio5);
+
+ Reset( );
+
+ IoInit( );
+
+ RxChainCalibration( );
+
+ SetOpMode( RF_OPMODE_SLEEP );
+
+ IoIrqInit( dioIrq );
+
+ RadioRegistersInit( );
+
+ SetModem( MODEM_FSK );
+
+ this->settings.State = RF_IDLE ;
+}
+
+SX1276Generic::~SX1276Generic()
+{
+ if (_antSwitch)
+ delete _antSwitch;
+ if (_antSwitchTX)
+ delete _antSwitchTX;
+ if (_antSwitchTXBoost)
+ delete _antSwitchTXBoost;
+
+ if (_tcxo) {
+ *_tcxo = 0;
+ delete (_tcxo);
+ }
+ delete _reset;
+ delete _spi;
+ delete _nss;
+
+ if (_dio0)
+ delete _dio0;
+ if (_dio1)
+ delete _dio1;
+ if (_dio2)
+ delete _dio2;
+ if (_dio3)
+ delete _dio3;
+ if (_dio4)
+ delete _dio4;
+ if (_dio5)
+ delete _dio5;
+}
+
+//-------------------------------------------------------------------------
+// Board relative functions
+//-------------------------------------------------------------------------
+uint8_t SX1276Generic::DetectBoardType( void )
+{
+ return boardConnected;
+}
+
+void SX1276Generic::IoInit( void )
+{
+ if (_tcxo)
+ *_tcxo = 1;
+ AntSwInit( );
+ SpiInit( );
+}
+
+void SX1276Generic::RadioRegistersInit( )
+{
+ uint8_t i = 0;
+ for( i = 0; i < sizeof( RadioRegsInit ) / sizeof( RadioRegisters_t ); i++ )
+ {
+ SetModem( RadioRegsInit[i].Modem );
+ Write( RadioRegsInit[i].Addr, RadioRegsInit[i].Value );
+ }
+}
+
+void SX1276Generic::SpiInit( void )
+{
+ *_nss = 1;
+ _spi->format( 8,0 );
+ uint32_t frequencyToSet = 8000000;
+#ifdef TARGET_KL25Z //busclock frequency is halved -> double the spi frequency to compensate
+ _spi->frequency( frequencyToSet * 2 );
+#else
+ _spi->frequency( frequencyToSet );
+#endif
+ wait_ms(100);
+}
+
+void SX1276Generic::IoIrqInit( DioIrqHandler *irqHandlers )
+{
+#if( defined ( TARGET_NUCLEO_L152RE ) || defined ( TARGET_LPC11U6X ) )
+ dio0.mode( PullDown );
+ dio1.mode( PullDown );
+ dio2.mode( PullDown );
+ dio3.mode( PullDown );
+ dio4.mode( PullDown );
+#endif
+ if (_dio0)
+ _dio0->rise(callback(this, static_cast< TriggerMB1xAS > ( irqHandlers[0] )));
+ if (_dio1)
+ _dio1->rise(callback(this, static_cast< TriggerMB1xAS > ( irqHandlers[1] )));
+ if (_dio2)
+ _dio2->rise(callback(this, static_cast< TriggerMB1xAS > ( irqHandlers[2] )));
+ if (_dio3)
+ _dio3->rise(callback(this, static_cast< TriggerMB1xAS > ( irqHandlers[3] )));
+ if (_dio4)
+ _dio4->rise(callback(this, static_cast< TriggerMB1xAS > ( irqHandlers[4] )));
+}
+
+void SX1276Generic::IoDeInit( void )
+{
+ //nothing
+}
+
+void SX1276Generic::SetRfTxPower( int8_t power )
+{
+ uint8_t paConfig = 0;
+ uint8_t paDac = 0;
+
+ 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 );
+}
+
+
+uint8_t SX1276Generic::GetPaSelect( uint32_t channel )
+{
+ if( channel > RF_MID_BAND_THRESH )
+ {
+ if( boardConnected == SX1276MB1LAS || boardConnected == RFM95_SX1276)
+ {
+ return RF_PACONFIG_PASELECT_PABOOST;
+ }
+ else
+ {
+ return RF_PACONFIG_PASELECT_RFO;
+ }
+ }
+ else
+ {
+ return RF_PACONFIG_PASELECT_RFO;
+ }
+}
+
+void SX1276Generic::SetAntSwLowPower( bool status )
+{
+ if( isRadioActive != status )
+ {
+ isRadioActive = status;
+
+ if( status == false )
+ {
+ AntSwInit( );
+ }
+ else
+ {
+ AntSwDeInit( );
+ }
+ }
+}
+
+void SX1276Generic::AntSwInit( void )
+{
+ if (_antSwitch)
+ *_antSwitch = 0;
+ if (boardConnected == MURATA_SX1276) {
+ *_antSwitchTX = 0;
+ *_antSwitchTXBoost = 0;
+ }
+}
+
+void SX1276Generic::AntSwDeInit( void )
+{
+ if (_antSwitch)
+ *_antSwitch = 0;
+ if (boardConnected == MURATA_SX1276) {
+ *_antSwitchTX = 0;
+ *_antSwitchTXBoost = 0;
+ }
+}
+
+
+void SX1276Generic::SetAntSw( uint8_t opMode )
+{
+ switch( opMode )
+ {
+ case RFLR_OPMODE_TRANSMITTER:
+ if (boardConnected == MURATA_SX1276) {
+ *_antSwitch = 0;// Murata-RX
+ *_antSwitchTX = 1; // alternate: antSwitchTXBoost = 1
+ *_antSwitchTXBoost = 0;
+ } else {
+ if (_antSwitch)
+ *_antSwitch = 1;
+ }
+ break;
+ case RFLR_OPMODE_RECEIVER:
+ case RFLR_OPMODE_RECEIVER_SINGLE:
+ case RFLR_OPMODE_CAD:
+ if (boardConnected == MURATA_SX1276) {
+ *_antSwitch = 1; // Murata-RX
+ *_antSwitchTX = 0;
+ *_antSwitchTXBoost = 0;
+ } else {
+ if (_antSwitch)
+ _antSwitch = 0;
+ }
+ break;
+ default:
+ if (boardConnected == MURATA_SX1276) {
+ *_antSwitch = 0; //Murata-RX
+ *_antSwitchTX = 0;
+ *_antSwitchTXBoost = 0;
+ } else {
+ if (_antSwitch)
+ *_antSwitch = 0;
+ }
+ break;
+ }
+}
+
+bool SX1276Generic::CheckRfFrequency( uint32_t frequency )
+{
+ // Implement check. Currently all frequencies are supported
+ return true;
+}
+
+void SX1276Generic::Reset( void )
+{
+ _reset->output();
+ *_reset = 0;
+ wait_ms( 1 );
+ *_reset = 1;
+ _reset->input(); // I don't know my input again, maybe to save power (Helmut T)
+ wait_ms( 6 );
+}
+
+void SX1276Generic::Write( uint8_t addr, uint8_t data )
+{
+ Write( addr, &data, 1 );
+}
+
+uint8_t SX1276Generic::Read( uint8_t addr )
+{
+ uint8_t data;
+ Read( addr, &data, 1 );
+ return data;
+}
+
+void SX1276Generic::Write( uint8_t addr, uint8_t *buffer, uint8_t size )
+{
+ uint8_t i;
+
+ *_nss = 0; // what about SPI hold/release timing on fast MCUs? Helmut
+ _spi->write( addr | 0x80 );
+ for( i = 0; i < size; i++ )
+ {
+ _spi->write( buffer[i] );
+ }
+ *_nss = 1;
+}
+
+void SX1276Generic::Read( uint8_t addr, uint8_t *buffer, uint8_t size )
+{
+ uint8_t i;
+
+ *_nss = 0; // what about SPI hold/release timing on fast MCUs? Helmut
+ _spi->write( addr & 0x7F );
+ for( i = 0; i < size; i++ )
+ {
+ buffer[i] = _spi->write( 0 );
+ }
+ *_nss = 1;
+}
+
+void SX1276Generic::WriteFifo( uint8_t *buffer, uint8_t size )
+{
+ Write( 0, buffer, size );
+}
+
+void SX1276Generic::ReadFifo( uint8_t *buffer, uint8_t size )
+{
+ Read( 0, buffer, size );
+}