Diff: SX1276GenericLib/sx1276/sx1276-mbed-hal.cpp

Revision:

12:046346a16ff4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SX1276GenericLib/sx1276/sx1276-mbed-hal.cpp	Sat May 19 15:42:38 2018 +0000
@@ -0,0 +1,442 @@
+/*
+ / _____)             _              | |
+( (____  _____ ____ _| |_ _____  ____| |__
+ \____ \| ___ |    (_   _) ___ |/ ___)  _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+    (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
+ */
+
+#ifdef ARDUINO
+ #include "arduino-mbed.h"
+#endif
+
+#include "sx1276-mbed-hal.h"
+
+
+
+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)
+{
+    Sleep_ms( 10 );
+    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 DigitalOut(antSwitch);
+            break;
+        case RFM95_SX1276:
+            break;
+        case MURATA_SX1276:
+            _antSwitch = new DigitalOut(antSwitch);
+            _antSwitchTX = new DigitalOut(antSwitchTX);
+            _antSwitchTXBoost = new DigitalOut(antSwitchTXBoost);
+            break;
+        default:
+            break;
+    }
+    _spi = new XSPI(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 );
+}
+
+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::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 (_dio0)
+    	_dio0->rise(callback(this, static_cast< Trigger > ( irqHandlers[0] )));
+    if (_dio1)
+    	_dio1->rise(callback(this, static_cast< Trigger > ( irqHandlers[1] )));
+    if (_dio2)
+    	_dio2->rise(callback(this, static_cast< Trigger > ( irqHandlers[2] )));
+    if (_dio3)
+    	_dio3->rise(callback(this, static_cast< Trigger > ( irqHandlers[3] )));
+    if (_dio4)
+        _dio4->rise(callback(this, static_cast< Trigger > ( 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 || boardConnected == MURATA_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
+                if (Read( REG_PACONFIG) & RF_PACONFIG_PASELECT_PABOOST)
+                    *_antSwitchTXBoost = 1;
+            	else
+               		*_antSwitchTX = 1; 	// alternate: antSwitchTXBoost = 1
+            } 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;
+        case RFLR_OPMODE_SLEEP:
+        case RFLR_OPMODE_STANDBY:
+        default:
+            if (boardConnected == MURATA_SX1276) {
+                *_antSwitch = 0;  //Murata-RX
+            	*_antSwitchTX = 0;
+            	*_antSwitchTXBoost = 0;
+            } else {
+                if (_antSwitch)
+        			*_antSwitch = 0;
+            }
+            break;
+    }
+}
+
+void SX1276Generic::SetTimeout(TimeoutTimer_t timer, timeoutFuncPtr func, int timeout_ms)
+{
+    switch(timer) {
+	    case RXTimeoutTimer:
+            if (func)
+                rxTimeoutTimer.attach_us(callback(this, func), timeout_ms);
+            else
+                rxTimeoutTimer.detach();
+            break;
+        case TXTimeoutTimer:
+            if (func)
+                txTimeoutTimer.attach_us(callback(this, func), timeout_ms);
+            else
+                txTimeoutTimer.detach();
+            break;
+        case RXTimeoutSyncWordTimer:
+            if (func)
+                rxTimeoutSyncWord.attach_us(callback(this, func), timeout_ms);
+            else
+                rxTimeoutSyncWord.detach();
+            break;
+    }
+}
+
+void
+SX1276Generic::Sleep_ms(int ms)
+{
+    wait_ms(ms);
+}
+
+bool SX1276Generic::CheckRfFrequency( uint32_t frequency )
+{
+    if (frequency > 1200000)
+        return false;
+    // 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, void *buffer, uint8_t size )
+{
+    uint8_t i;
+    uint8_t *p = (uint8_t *)buffer;
+
+    *_nss = 0; // what about SPI hold/release timing on fast MCUs? Helmut
+    _spi->write( addr | 0x80 );
+    for( i = 0; i < size; i++ )
+    {
+        _spi->write(*p++);
+    }
+    *_nss = 1;
+}
+
+void SX1276Generic::Read( uint8_t addr, void *buffer, uint8_t size )
+{
+    uint8_t i;
+    uint8_t *p = (uint8_t *)buffer;
+    
+    *_nss = 0; // what about SPI hold/release timing on fast MCUs? Helmut
+    _spi->write( addr & 0x7F );
+    for( i = 0; i < size; i++ )
+    {
+        *p++ = _spi->write( 0 );
+    }
+    *_nss = 1;
+}
+
+void SX1276Generic::WriteFifo( void *buffer, uint8_t size )
+{
+    Write( 0, buffer, size );
+}
+
+void SX1276Generic::ReadFifo( void *buffer, uint8_t size )
+{
+    Read( 0, buffer, size );
+}