Semtech / SX1276Lib

Driver for the SX1276 RF Transceiver

Dependents:   LoRa_PIR LoRaWAN-lmic-app SX1276PingPong LoRaWAN-lmic-app ... more

sx1276/sx1276-hal.cpp@2:5eb3066446dd, 2014-08-19 (annotated)

Committer:
GregCr
Date:
Tue Aug 19 08:50:09 2014 +0000
Revision:
2:5eb3066446dd
Parent:
1:f979673946c0
Child:
3:ca84be1f3fac
Corrections linked to the board detection and handling

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GregCr 0:e6ceb13d2d05 1 /*
GregCr 0:e6ceb13d2d05 2 / _____) _ | |
GregCr 0:e6ceb13d2d05 3 ( (____ _____ ____ _| |_ _____ ____| |__
GregCr 0:e6ceb13d2d05 4 \____ \| ___ | (_ _) ___ |/ ___) _ \
GregCr 0:e6ceb13d2d05 5 _____) ) ____| | | || |_| ____( (___| | | |
GregCr 0:e6ceb13d2d05 6 (______/|_____)_|_|_| \__)_____)\____)_| |_|
GregCr 0:e6ceb13d2d05 7 ( C )2014 Semtech
GregCr 0:e6ceb13d2d05 8
GregCr 0:e6ceb13d2d05 9 Description: -
GregCr 0:e6ceb13d2d05 10
GregCr 0:e6ceb13d2d05 11 License: Revised BSD License, see LICENSE.TXT file include in the project
GregCr 0:e6ceb13d2d05 12
GregCr 0:e6ceb13d2d05 13 Maintainers: Miguel Luis, Gregory Cristian and Nicolas Huguenin
GregCr 0:e6ceb13d2d05 14 */
GregCr 0:e6ceb13d2d05 15 #include "sx1276-hal.h"
GregCr 1:f979673946c0 16 #include "debug.h"
GregCr 0:e6ceb13d2d05 17
GregCr 0:e6ceb13d2d05 18 const RadioRegisters_t SX1276MB1xAS::RadioRegsInit[] =
GregCr 0:e6ceb13d2d05 19 {
GregCr 0:e6ceb13d2d05 20 { MODEM_FSK , REG_LNA , 0x23 },
GregCr 0:e6ceb13d2d05 21 { MODEM_FSK , REG_RXCONFIG , 0x1E },
GregCr 0:e6ceb13d2d05 22 { MODEM_FSK , REG_RSSICONFIG , 0xD2 },
GregCr 0:e6ceb13d2d05 23 { MODEM_FSK , REG_PREAMBLEDETECT , 0xAA },
GregCr 0:e6ceb13d2d05 24 { MODEM_FSK , REG_OSC , 0x07 },
GregCr 0:e6ceb13d2d05 25 { MODEM_FSK , REG_SYNCCONFIG , 0x12 },
GregCr 0:e6ceb13d2d05 26 { MODEM_FSK , REG_SYNCVALUE1 , 0xC1 },
GregCr 0:e6ceb13d2d05 27 { MODEM_FSK , REG_SYNCVALUE2 , 0x94 },
GregCr 0:e6ceb13d2d05 28 { MODEM_FSK , REG_SYNCVALUE3 , 0xC1 },
GregCr 0:e6ceb13d2d05 29 { MODEM_FSK , REG_PACKETCONFIG1 , 0xD8 },
GregCr 0:e6ceb13d2d05 30 { MODEM_FSK , REG_FIFOTHRESH , 0x8F },
GregCr 0:e6ceb13d2d05 31 { MODEM_FSK , REG_IMAGECAL , 0x02 },
GregCr 0:e6ceb13d2d05 32 { MODEM_FSK , REG_DIOMAPPING1 , 0x00 },
GregCr 0:e6ceb13d2d05 33 { MODEM_FSK , REG_DIOMAPPING2 , 0x30 },
GregCr 0:e6ceb13d2d05 34 { MODEM_LORA, REG_LR_PAYLOADMAXLENGTH, 0x40 },
GregCr 0:e6ceb13d2d05 35 };
GregCr 0:e6ceb13d2d05 36
GregCr 0:e6ceb13d2d05 37 SX1276MB1xAS::SX1276MB1xAS( void ( *txDone )( ), void ( *txTimeout ) ( ), void ( *rxDone ) ( uint8_t *payload, uint16_t size, int8_t rssi, int8_t snr ), void ( *rxTimeout ) ( ), void ( *rxError ) ( ),
GregCr 0:e6ceb13d2d05 38 PinName mosi, PinName miso, PinName sclk, PinName nss, PinName reset,
GregCr 0:e6ceb13d2d05 39 PinName dio0, PinName dio1, PinName dio2, PinName dio3, PinName dio4, PinName dio5,
GregCr 0:e6ceb13d2d05 40 PinName antSwitch )
GregCr 0:e6ceb13d2d05 41 : SX1276( txDone, txTimeout, rxDone, rxTimeout, rxError, mosi, miso, sclk, nss, reset, dio0, dio1, dio2, dio3, dio4, dio5),
GregCr 0:e6ceb13d2d05 42 antSwitch( antSwitch ),
GregCr 0:e6ceb13d2d05 43 #if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
GregCr 0:e6ceb13d2d05 44 fake( A3 )
GregCr 0:e6ceb13d2d05 45 #elif defined ( TARGET_NUCLEO_L152RE )
GregCr 0:e6ceb13d2d05 46 fake( D8 )
GregCr 0:e6ceb13d2d05 47 #else
GregCr 0:e6ceb13d2d05 48 #warning "Check availability of IRQs on your selected board"
GregCr 0:e6ceb13d2d05 49 #endif
GregCr 0:e6ceb13d2d05 50 {
GregCr 0:e6ceb13d2d05 51 Reset( );
GregCr 0:e6ceb13d2d05 52
GregCr 0:e6ceb13d2d05 53 RxChainCalibration( );
GregCr 0:e6ceb13d2d05 54
GregCr 0:e6ceb13d2d05 55 IoInit( );
GregCr 0:e6ceb13d2d05 56
GregCr 0:e6ceb13d2d05 57 SetOpMode( RF_OPMODE_SLEEP );
GregCr 0:e6ceb13d2d05 58
GregCr 0:e6ceb13d2d05 59 IoIrqInit( dioIrq );
GregCr 0:e6ceb13d2d05 60
GregCr 0:e6ceb13d2d05 61 RadioRegistersInit( );
GregCr 0:e6ceb13d2d05 62
GregCr 0:e6ceb13d2d05 63 SetModem( MODEM_FSK );
GregCr 0:e6ceb13d2d05 64
GregCr 0:e6ceb13d2d05 65 this->settings.State = IDLE ;
GregCr 0:e6ceb13d2d05 66 }
GregCr 0:e6ceb13d2d05 67
GregCr 0:e6ceb13d2d05 68 SX1276MB1xAS::SX1276MB1xAS( void ( *txDone )( ), void ( *txTimeout ) ( ), void ( *rxDone ) ( uint8_t *payload, uint16_t size, int8_t rssi, int8_t snr ), void ( *rxTimeout ) ( ), void ( *rxError ) ( ) )
GregCr 0:e6ceb13d2d05 69 #if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
GregCr 0:e6ceb13d2d05 70 : SX1276( txDone, txTimeout, rxDone, rxTimeout, rxError, D11, D12, D13, D10, A0, D2, D3, D4, D5, D8, D9 ),
GregCr 0:e6ceb13d2d05 71 antSwitch( A4 ),
GregCr 0:e6ceb13d2d05 72 fake( A3 )
GregCr 0:e6ceb13d2d05 73 #elif defined ( TARGET_NUCLEO_L152RE )
GregCr 0:e6ceb13d2d05 74 : SX1276( txDone, txTimeout, rxDone, rxTimeout, rxError, D11, D12, D13, D10, A0, D2, D3, D4, D5, A3, D9 ), // For NUCLEO L152RE dio4 is on port A3
GregCr 0:e6ceb13d2d05 75 antSwitch( A4 ),
GregCr 0:e6ceb13d2d05 76 fake( D8 )
GregCr 0:e6ceb13d2d05 77 #else
GregCr 0:e6ceb13d2d05 78 #warning "Check availability of IRQs on your selected board"
GregCr 0:e6ceb13d2d05 79 #endif
GregCr 0:e6ceb13d2d05 80 {
GregCr 0:e6ceb13d2d05 81 Reset( );
GregCr 0:e6ceb13d2d05 82
GregCr 1:f979673946c0 83 DetectBoardType( );
GregCr 1:f979673946c0 84
GregCr 0:e6ceb13d2d05 85 RxChainCalibration( );
GregCr 0:e6ceb13d2d05 86
GregCr 0:e6ceb13d2d05 87 IoInit( );
GregCr 0:e6ceb13d2d05 88
GregCr 0:e6ceb13d2d05 89 SetOpMode( RF_OPMODE_SLEEP );
GregCr 0:e6ceb13d2d05 90 IoIrqInit( dioIrq );
GregCr 0:e6ceb13d2d05 91
GregCr 0:e6ceb13d2d05 92 RadioRegistersInit( );
GregCr 0:e6ceb13d2d05 93
GregCr 0:e6ceb13d2d05 94 SetModem( MODEM_FSK );
GregCr 0:e6ceb13d2d05 95
GregCr 0:e6ceb13d2d05 96 this->settings.State = IDLE ;
GregCr 0:e6ceb13d2d05 97 }
GregCr 0:e6ceb13d2d05 98
GregCr 0:e6ceb13d2d05 99 //-------------------------------------------------------------------------
GregCr 0:e6ceb13d2d05 100 // Board relative functions
GregCr 0:e6ceb13d2d05 101 //-------------------------------------------------------------------------
GregCr 2:5eb3066446dd 102 uint8_t SX1276MB1xAS::DetectBoardType( void )
GregCr 1:f979673946c0 103 {
GregCr 1:f979673946c0 104 antSwitch.input( );
GregCr 1:f979673946c0 105 if( antSwitch == 1 )
GregCr 1:f979673946c0 106 {
GregCr 2:5eb3066446dd 107 boardConnected = SX1276MB1LAS;
GregCr 1:f979673946c0 108 }
GregCr 1:f979673946c0 109 else
GregCr 1:f979673946c0 110 {
GregCr 2:5eb3066446dd 111 boardConnected = SX1276MB1MAS;
GregCr 1:f979673946c0 112 }
GregCr 1:f979673946c0 113 antSwitch.output( );
GregCr 2:5eb3066446dd 114
GregCr 2:5eb3066446dd 115 return ( boardConnected );
GregCr 1:f979673946c0 116 }
GregCr 0:e6ceb13d2d05 117
GregCr 0:e6ceb13d2d05 118 void SX1276MB1xAS::IoInit( void )
GregCr 0:e6ceb13d2d05 119 {
GregCr 0:e6ceb13d2d05 120 AntSwInit( );
GregCr 0:e6ceb13d2d05 121 SpiInit( );
GregCr 0:e6ceb13d2d05 122 }
GregCr 0:e6ceb13d2d05 123
GregCr 0:e6ceb13d2d05 124 void SX1276MB1xAS::RadioRegistersInit( ){
GregCr 0:e6ceb13d2d05 125 uint8_t i = 0;
GregCr 0:e6ceb13d2d05 126 for( i = 0; i < sizeof( RadioRegsInit ) / sizeof( RadioRegisters_t ); i++ )
GregCr 0:e6ceb13d2d05 127 {
GregCr 0:e6ceb13d2d05 128 SetModem( RadioRegsInit[i].Modem );
GregCr 0:e6ceb13d2d05 129 Write( RadioRegsInit[i].Addr, RadioRegsInit[i].Value );
GregCr 0:e6ceb13d2d05 130 }
GregCr 0:e6ceb13d2d05 131 }
GregCr 0:e6ceb13d2d05 132
GregCr 0:e6ceb13d2d05 133 void SX1276MB1xAS::SpiInit( void )
GregCr 0:e6ceb13d2d05 134 {
GregCr 0:e6ceb13d2d05 135
GregCr 0:e6ceb13d2d05 136 nss = 1;
GregCr 0:e6ceb13d2d05 137 spi.format( 8,0 );
GregCr 0:e6ceb13d2d05 138 uint32_t frequencyToSet = 8000000;
GregCr 0:e6ceb13d2d05 139 #if( defined ( TARGET_NUCLEO_L152RE ) || defined ( TARGET_LPC11U6X ) )
GregCr 0:e6ceb13d2d05 140 spi.frequency( frequencyToSet );
GregCr 0:e6ceb13d2d05 141 #elif( defined ( TARGET_KL25Z ) ) //busclock frequency is halved -> double the spi frequency to compensate
GregCr 0:e6ceb13d2d05 142 spi.frequency( frequencyToSet * 2 );
GregCr 0:e6ceb13d2d05 143 #else
GregCr 0:e6ceb13d2d05 144 #warning "Check the board's SPI frequency"
GregCr 0:e6ceb13d2d05 145 #endif
GregCr 0:e6ceb13d2d05 146 wait(0.1);
GregCr 0:e6ceb13d2d05 147 }
GregCr 0:e6ceb13d2d05 148
GregCr 0:e6ceb13d2d05 149 void SX1276MB1xAS::IoIrqInit( DioIrqHandler *irqHandlers )
GregCr 0:e6ceb13d2d05 150 {
GregCr 0:e6ceb13d2d05 151 #if( defined ( TARGET_NUCLEO_L152RE ) || defined ( TARGET_LPC11U6X ) )
GregCr 0:e6ceb13d2d05 152 dio0.mode(PullDown);
GregCr 0:e6ceb13d2d05 153 dio1.mode(PullDown);
GregCr 0:e6ceb13d2d05 154 dio2.mode(PullDown);
GregCr 0:e6ceb13d2d05 155 dio3.mode(PullDown);
GregCr 0:e6ceb13d2d05 156 dio4.mode(PullDown);
GregCr 0:e6ceb13d2d05 157 #endif
GregCr 0:e6ceb13d2d05 158 dio0.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[0] ) );
GregCr 0:e6ceb13d2d05 159 dio1.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[1] ) );
GregCr 0:e6ceb13d2d05 160 dio2.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[2] ) );
GregCr 0:e6ceb13d2d05 161 dio3.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[3] ) );
GregCr 0:e6ceb13d2d05 162 dio4.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[4] ) );
GregCr 0:e6ceb13d2d05 163 }
GregCr 0:e6ceb13d2d05 164
GregCr 0:e6ceb13d2d05 165 void SX1276MB1xAS::IoDeInit( void )
GregCr 0:e6ceb13d2d05 166 {
GregCr 0:e6ceb13d2d05 167 //nothing
GregCr 0:e6ceb13d2d05 168 }
GregCr 0:e6ceb13d2d05 169
GregCr 0:e6ceb13d2d05 170 uint8_t SX1276MB1xAS::GetPaSelect( uint32_t channel )
GregCr 0:e6ceb13d2d05 171 {
GregCr 0:e6ceb13d2d05 172 if( channel > RF_MID_BAND_THRESH )
GregCr 0:e6ceb13d2d05 173 {
GregCr 1:f979673946c0 174 if( boardConnected == 0x01 )
GregCr 1:f979673946c0 175 {
GregCr 1:f979673946c0 176 return RF_PACONFIG_PASELECT_PABOOST;
GregCr 1:f979673946c0 177 }
GregCr 1:f979673946c0 178 else
GregCr 1:f979673946c0 179 {
GregCr 1:f979673946c0 180 return RF_PACONFIG_PASELECT_RFO;
GregCr 1:f979673946c0 181 }
GregCr 0:e6ceb13d2d05 182 }
GregCr 0:e6ceb13d2d05 183 else
GregCr 0:e6ceb13d2d05 184 {
GregCr 0:e6ceb13d2d05 185 return RF_PACONFIG_PASELECT_RFO;
GregCr 0:e6ceb13d2d05 186 }
GregCr 0:e6ceb13d2d05 187 }
GregCr 0:e6ceb13d2d05 188
GregCr 0:e6ceb13d2d05 189 void SX1276MB1xAS::SetAntSwLowPower( bool status )
GregCr 0:e6ceb13d2d05 190 {
GregCr 0:e6ceb13d2d05 191 if( isRadioActive != status )
GregCr 0:e6ceb13d2d05 192 {
GregCr 0:e6ceb13d2d05 193 isRadioActive = status;
GregCr 0:e6ceb13d2d05 194
GregCr 0:e6ceb13d2d05 195 if( status == false )
GregCr 0:e6ceb13d2d05 196 {
GregCr 0:e6ceb13d2d05 197 AntSwInit( );
GregCr 0:e6ceb13d2d05 198 }
GregCr 0:e6ceb13d2d05 199 else
GregCr 0:e6ceb13d2d05 200 {
GregCr 0:e6ceb13d2d05 201 AntSwDeInit( );
GregCr 0:e6ceb13d2d05 202 }
GregCr 0:e6ceb13d2d05 203 }
GregCr 0:e6ceb13d2d05 204 }
GregCr 0:e6ceb13d2d05 205
GregCr 0:e6ceb13d2d05 206 void SX1276MB1xAS::AntSwInit( void )
GregCr 0:e6ceb13d2d05 207 {
GregCr 0:e6ceb13d2d05 208 antSwitch = 0;
GregCr 0:e6ceb13d2d05 209 }
GregCr 0:e6ceb13d2d05 210
GregCr 0:e6ceb13d2d05 211 void SX1276MB1xAS::AntSwDeInit( void )
GregCr 0:e6ceb13d2d05 212 {
GregCr 0:e6ceb13d2d05 213 antSwitch = 0;
GregCr 0:e6ceb13d2d05 214 }
GregCr 0:e6ceb13d2d05 215
GregCr 0:e6ceb13d2d05 216 void SX1276MB1xAS::SetAntSw( uint8_t rxTx )
GregCr 0:e6ceb13d2d05 217 {
GregCr 0:e6ceb13d2d05 218 if( this->rxTx == rxTx )
GregCr 0:e6ceb13d2d05 219 {
GregCr 0:e6ceb13d2d05 220 //no need to go further
GregCr 0:e6ceb13d2d05 221 return;
GregCr 0:e6ceb13d2d05 222 }
GregCr 0:e6ceb13d2d05 223
GregCr 0:e6ceb13d2d05 224 this->rxTx = rxTx;
GregCr 0:e6ceb13d2d05 225
GregCr 0:e6ceb13d2d05 226 if( rxTx != 0 )
GregCr 0:e6ceb13d2d05 227 {
GregCr 0:e6ceb13d2d05 228 antSwitch = 1;
GregCr 0:e6ceb13d2d05 229 }
GregCr 0:e6ceb13d2d05 230 else
GregCr 0:e6ceb13d2d05 231 {
GregCr 0:e6ceb13d2d05 232 antSwitch = 0;
GregCr 0:e6ceb13d2d05 233 }
GregCr 0:e6ceb13d2d05 234 }
GregCr 0:e6ceb13d2d05 235
GregCr 0:e6ceb13d2d05 236 bool SX1276MB1xAS::CheckRfFrequency( uint32_t frequency )
GregCr 0:e6ceb13d2d05 237 {
GregCr 0:e6ceb13d2d05 238 //TODO: Implement check, currently all frequencies are supported
GregCr 0:e6ceb13d2d05 239 return true;
GregCr 0:e6ceb13d2d05 240 }
GregCr 0:e6ceb13d2d05 241
GregCr 0:e6ceb13d2d05 242
GregCr 0:e6ceb13d2d05 243 void SX1276MB1xAS::Reset( void )
GregCr 0:e6ceb13d2d05 244 {
GregCr 0:e6ceb13d2d05 245 reset = 0;
GregCr 0:e6ceb13d2d05 246 wait_ms( 1 );
GregCr 0:e6ceb13d2d05 247 reset = 1;
GregCr 0:e6ceb13d2d05 248 wait_ms( 6 );
GregCr 0:e6ceb13d2d05 249 }
GregCr 0:e6ceb13d2d05 250
GregCr 0:e6ceb13d2d05 251 void SX1276MB1xAS::Write( uint8_t addr, uint8_t data )
GregCr 0:e6ceb13d2d05 252 {
GregCr 0:e6ceb13d2d05 253 Write( addr, &data, 1 );
GregCr 0:e6ceb13d2d05 254 }
GregCr 0:e6ceb13d2d05 255
GregCr 0:e6ceb13d2d05 256 uint8_t SX1276MB1xAS::Read( uint8_t addr )
GregCr 0:e6ceb13d2d05 257 {
GregCr 0:e6ceb13d2d05 258 uint8_t data;
GregCr 0:e6ceb13d2d05 259 Read( addr, &data, 1 );
GregCr 0:e6ceb13d2d05 260 return data;
GregCr 0:e6ceb13d2d05 261 }
GregCr 0:e6ceb13d2d05 262
GregCr 0:e6ceb13d2d05 263 void SX1276MB1xAS::Write( uint8_t addr, uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 264 {
GregCr 0:e6ceb13d2d05 265 uint8_t i;
GregCr 0:e6ceb13d2d05 266
GregCr 0:e6ceb13d2d05 267 nss = 0;
GregCr 0:e6ceb13d2d05 268 spi.write( addr | 0x80 );
GregCr 0:e6ceb13d2d05 269 for( i = 0; i < size; i++ )
GregCr 0:e6ceb13d2d05 270 {
GregCr 0:e6ceb13d2d05 271 spi.write( buffer[i] );
GregCr 0:e6ceb13d2d05 272 }
GregCr 0:e6ceb13d2d05 273 nss = 1;
GregCr 0:e6ceb13d2d05 274 }
GregCr 0:e6ceb13d2d05 275
GregCr 0:e6ceb13d2d05 276 void SX1276MB1xAS::Read( uint8_t addr, uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 277 {
GregCr 0:e6ceb13d2d05 278 uint8_t i;
GregCr 0:e6ceb13d2d05 279
GregCr 0:e6ceb13d2d05 280 nss = 0;
GregCr 0:e6ceb13d2d05 281 spi.write( addr & 0x7F );
GregCr 0:e6ceb13d2d05 282 for( i = 0; i < size; i++ )
GregCr 0:e6ceb13d2d05 283 {
GregCr 0:e6ceb13d2d05 284 buffer[i] = spi.write( 0 );
GregCr 0:e6ceb13d2d05 285 }
GregCr 0:e6ceb13d2d05 286 nss = 1;
GregCr 0:e6ceb13d2d05 287 }
GregCr 0:e6ceb13d2d05 288
GregCr 0:e6ceb13d2d05 289 void SX1276MB1xAS::WriteFifo( uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 290 {
GregCr 0:e6ceb13d2d05 291 Write( 0, buffer, size );
GregCr 0:e6ceb13d2d05 292 }
GregCr 0:e6ceb13d2d05 293
GregCr 0:e6ceb13d2d05 294 void SX1276MB1xAS::ReadFifo( uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 295 {
GregCr 0:e6ceb13d2d05 296 Read( 0, buffer, size );
GregCr 0:e6ceb13d2d05 297 }