Gregory Cristian / SX1276Lib

Driver for the SX1276 RF Transceiver

Dependents:   LoRaWAN_actility LoRaWAN_MBED LoRaWANSharedTest

sx1276/sx1276-hal.cpp@12:aa5b3bf7fdf4, 2014-10-13 (annotated)

Committer:
GregCr
Date:
Mon Oct 13 07:33:11 2014 +0000
Revision:
12:aa5b3bf7fdf4
Parent:
8:0fe3e0e8007b
Child:
15:04374b1c33fa
Added LICENSE.txt; Minor corrections

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 8:0fe3e0e8007b 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 0:e6ceb13d2d05 16
GregCr 0:e6ceb13d2d05 17 const RadioRegisters_t SX1276MB1xAS::RadioRegsInit[] =
GregCr 0:e6ceb13d2d05 18 {
GregCr 0:e6ceb13d2d05 19 { MODEM_FSK , REG_LNA , 0x23 },
GregCr 0:e6ceb13d2d05 20 { MODEM_FSK , REG_RXCONFIG , 0x1E },
GregCr 0:e6ceb13d2d05 21 { MODEM_FSK , REG_RSSICONFIG , 0xD2 },
GregCr 0:e6ceb13d2d05 22 { MODEM_FSK , REG_PREAMBLEDETECT , 0xAA },
GregCr 0:e6ceb13d2d05 23 { MODEM_FSK , REG_OSC , 0x07 },
GregCr 0:e6ceb13d2d05 24 { MODEM_FSK , REG_SYNCCONFIG , 0x12 },
GregCr 0:e6ceb13d2d05 25 { MODEM_FSK , REG_SYNCVALUE1 , 0xC1 },
GregCr 0:e6ceb13d2d05 26 { MODEM_FSK , REG_SYNCVALUE2 , 0x94 },
GregCr 0:e6ceb13d2d05 27 { MODEM_FSK , REG_SYNCVALUE3 , 0xC1 },
GregCr 5:11ec8a6ba4f0 28 { MODEM_FSK , REG_PACKETCONFIG1 , 0x98 },
GregCr 0:e6ceb13d2d05 29 { MODEM_FSK , REG_FIFOTHRESH , 0x8F },
GregCr 0:e6ceb13d2d05 30 { MODEM_FSK , REG_IMAGECAL , 0x02 },
GregCr 0:e6ceb13d2d05 31 { MODEM_FSK , REG_DIOMAPPING1 , 0x00 },
GregCr 0:e6ceb13d2d05 32 { MODEM_FSK , REG_DIOMAPPING2 , 0x30 },
GregCr 0:e6ceb13d2d05 33 { MODEM_LORA, REG_LR_PAYLOADMAXLENGTH, 0x40 },
GregCr 0:e6ceb13d2d05 34 };
GregCr 0:e6ceb13d2d05 35
GregCr 7:2b555111463f 36 SX1276MB1xAS::SX1276MB1xAS( void ( *txDone )( ), void ( *txTimeout ) ( ), void ( *rxDone ) ( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr ),
GregCr 12:aa5b3bf7fdf4 37 void ( *rxTimeout ) ( ), void ( *rxError ) ( ), void ( *fhssChangeChannel ) ( uint8_t channelIndex ), void ( *cadDone ) ( bool ChannelActivityDetected ),
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 7:2b555111463f 41 : SX1276( txDone, txTimeout, rxDone, rxTimeout, rxError, fhssChangeChannel, cadDone, mosi, miso, sclk, nss, reset, dio0, dio1, dio2, dio3, dio4, dio5),
GregCr 0:e6ceb13d2d05 42 antSwitch( antSwitch ),
GregCr 12:aa5b3bf7fdf4 43 #if( defined ( TARGET_NUCLEO_L152RE ) )
GregCr 12:aa5b3bf7fdf4 44 fake( D8 )
GregCr 12:aa5b3bf7fdf4 45 #else
GregCr 0:e6ceb13d2d05 46 fake( A3 )
GregCr 0:e6ceb13d2d05 47 #endif
GregCr 0:e6ceb13d2d05 48 {
GregCr 0:e6ceb13d2d05 49 Reset( );
GregCr 0:e6ceb13d2d05 50
GregCr 0:e6ceb13d2d05 51 RxChainCalibration( );
GregCr 0:e6ceb13d2d05 52
GregCr 0:e6ceb13d2d05 53 IoInit( );
GregCr 0:e6ceb13d2d05 54
GregCr 0:e6ceb13d2d05 55 SetOpMode( RF_OPMODE_SLEEP );
GregCr 0:e6ceb13d2d05 56
GregCr 0:e6ceb13d2d05 57 IoIrqInit( dioIrq );
GregCr 0:e6ceb13d2d05 58
GregCr 0:e6ceb13d2d05 59 RadioRegistersInit( );
GregCr 0:e6ceb13d2d05 60
GregCr 0:e6ceb13d2d05 61 SetModem( MODEM_FSK );
GregCr 0:e6ceb13d2d05 62
GregCr 0:e6ceb13d2d05 63 this->settings.State = IDLE ;
GregCr 0:e6ceb13d2d05 64 }
GregCr 0:e6ceb13d2d05 65
GregCr 7:2b555111463f 66 SX1276MB1xAS::SX1276MB1xAS( void ( *txDone )( ), void ( *txTimeout ) ( ), void ( *rxDone ) ( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr ),
GregCr 12:aa5b3bf7fdf4 67 void ( *rxTimeout ) ( ), void ( *rxError ) ( ), void ( *fhssChangeChannel ) ( uint8_t channelIndex ), void ( *cadDone ) ( bool ChannelActivityDetected ) )
GregCr 12:aa5b3bf7fdf4 68 #if defined ( TARGET_NUCLEO_L152RE )
GregCr 7:2b555111463f 69 : SX1276( txDone, txTimeout, rxDone, rxTimeout, rxError, fhssChangeChannel, cadDone, D11, D12, D13, D10, A0, D2, D3, D4, D5, A3, D9 ), // For NUCLEO L152RE dio4 is on port A3
GregCr 0:e6ceb13d2d05 70 antSwitch( A4 ),
GregCr 0:e6ceb13d2d05 71 fake( D8 )
GregCr 0:e6ceb13d2d05 72 #else
GregCr 12:aa5b3bf7fdf4 73 : SX1276( txDone, txTimeout, rxDone, rxTimeout, rxError, fhssChangeChannel, cadDone, D11, D12, D13, D10, A0, D2, D3, D4, D5, D8, D9 ),
GregCr 12:aa5b3bf7fdf4 74 antSwitch( A4 ),
GregCr 12:aa5b3bf7fdf4 75 fake( A3 )
GregCr 0:e6ceb13d2d05 76 #endif
GregCr 0:e6ceb13d2d05 77 {
GregCr 0:e6ceb13d2d05 78 Reset( );
GregCr 0:e6ceb13d2d05 79
GregCr 5:11ec8a6ba4f0 80 boardConnected = UNKNOWN;
GregCr 5:11ec8a6ba4f0 81
GregCr 1:f979673946c0 82 DetectBoardType( );
GregCr 1:f979673946c0 83
GregCr 0:e6ceb13d2d05 84 RxChainCalibration( );
GregCr 0:e6ceb13d2d05 85
GregCr 0:e6ceb13d2d05 86 IoInit( );
GregCr 0:e6ceb13d2d05 87
GregCr 0:e6ceb13d2d05 88 SetOpMode( RF_OPMODE_SLEEP );
GregCr 0:e6ceb13d2d05 89 IoIrqInit( dioIrq );
GregCr 0:e6ceb13d2d05 90
GregCr 0:e6ceb13d2d05 91 RadioRegistersInit( );
GregCr 0:e6ceb13d2d05 92
GregCr 0:e6ceb13d2d05 93 SetModem( MODEM_FSK );
GregCr 0:e6ceb13d2d05 94
GregCr 0:e6ceb13d2d05 95 this->settings.State = IDLE ;
GregCr 0:e6ceb13d2d05 96 }
GregCr 0:e6ceb13d2d05 97
GregCr 0:e6ceb13d2d05 98 //-------------------------------------------------------------------------
GregCr 0:e6ceb13d2d05 99 // Board relative functions
GregCr 0:e6ceb13d2d05 100 //-------------------------------------------------------------------------
GregCr 2:5eb3066446dd 101 uint8_t SX1276MB1xAS::DetectBoardType( void )
GregCr 1:f979673946c0 102 {
GregCr 5:11ec8a6ba4f0 103 if( boardConnected == UNKNOWN )
GregCr 1:f979673946c0 104 {
GregCr 5:11ec8a6ba4f0 105 antSwitch.input( );
GregCr 5:11ec8a6ba4f0 106 wait_ms( 1 );
GregCr 5:11ec8a6ba4f0 107 if( antSwitch == 1 )
GregCr 5:11ec8a6ba4f0 108 {
GregCr 5:11ec8a6ba4f0 109 boardConnected = SX1276MB1LAS;
GregCr 5:11ec8a6ba4f0 110 }
GregCr 5:11ec8a6ba4f0 111 else
GregCr 5:11ec8a6ba4f0 112 {
GregCr 5:11ec8a6ba4f0 113 boardConnected = SX1276MB1MAS;
GregCr 5:11ec8a6ba4f0 114 }
GregCr 5:11ec8a6ba4f0 115 antSwitch.output( );
GregCr 5:11ec8a6ba4f0 116 wait_ms( 1 );
GregCr 1:f979673946c0 117 }
GregCr 2:5eb3066446dd 118 return ( boardConnected );
GregCr 1:f979673946c0 119 }
GregCr 0:e6ceb13d2d05 120
GregCr 0:e6ceb13d2d05 121 void SX1276MB1xAS::IoInit( void )
GregCr 0:e6ceb13d2d05 122 {
GregCr 0:e6ceb13d2d05 123 AntSwInit( );
GregCr 0:e6ceb13d2d05 124 SpiInit( );
GregCr 0:e6ceb13d2d05 125 }
GregCr 0:e6ceb13d2d05 126
GregCr 0:e6ceb13d2d05 127 void SX1276MB1xAS::RadioRegistersInit( ){
GregCr 0:e6ceb13d2d05 128 uint8_t i = 0;
GregCr 0:e6ceb13d2d05 129 for( i = 0; i < sizeof( RadioRegsInit ) / sizeof( RadioRegisters_t ); i++ )
GregCr 0:e6ceb13d2d05 130 {
GregCr 0:e6ceb13d2d05 131 SetModem( RadioRegsInit[i].Modem );
GregCr 0:e6ceb13d2d05 132 Write( RadioRegsInit[i].Addr, RadioRegsInit[i].Value );
GregCr 0:e6ceb13d2d05 133 }
GregCr 0:e6ceb13d2d05 134 }
GregCr 0:e6ceb13d2d05 135
GregCr 0:e6ceb13d2d05 136 void SX1276MB1xAS::SpiInit( void )
GregCr 0:e6ceb13d2d05 137 {
GregCr 0:e6ceb13d2d05 138 nss = 1;
GregCr 0:e6ceb13d2d05 139 spi.format( 8,0 );
GregCr 0:e6ceb13d2d05 140 uint32_t frequencyToSet = 8000000;
GregCr 0:e6ceb13d2d05 141 #if( defined ( TARGET_NUCLEO_L152RE ) || defined ( TARGET_LPC11U6X ) )
GregCr 0:e6ceb13d2d05 142 spi.frequency( frequencyToSet );
GregCr 0:e6ceb13d2d05 143 #elif( defined ( TARGET_KL25Z ) ) //busclock frequency is halved -> double the spi frequency to compensate
GregCr 0:e6ceb13d2d05 144 spi.frequency( frequencyToSet * 2 );
GregCr 0:e6ceb13d2d05 145 #else
GregCr 0:e6ceb13d2d05 146 #warning "Check the board's SPI frequency"
GregCr 0:e6ceb13d2d05 147 #endif
GregCr 0:e6ceb13d2d05 148 wait(0.1);
GregCr 0:e6ceb13d2d05 149 }
GregCr 0:e6ceb13d2d05 150
GregCr 0:e6ceb13d2d05 151 void SX1276MB1xAS::IoIrqInit( DioIrqHandler *irqHandlers )
GregCr 0:e6ceb13d2d05 152 {
GregCr 0:e6ceb13d2d05 153 #if( defined ( TARGET_NUCLEO_L152RE ) || defined ( TARGET_LPC11U6X ) )
GregCr 0:e6ceb13d2d05 154 dio0.mode(PullDown);
GregCr 0:e6ceb13d2d05 155 dio1.mode(PullDown);
GregCr 0:e6ceb13d2d05 156 dio2.mode(PullDown);
GregCr 0:e6ceb13d2d05 157 dio3.mode(PullDown);
GregCr 0:e6ceb13d2d05 158 dio4.mode(PullDown);
GregCr 0:e6ceb13d2d05 159 #endif
GregCr 0:e6ceb13d2d05 160 dio0.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[0] ) );
GregCr 0:e6ceb13d2d05 161 dio1.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[1] ) );
GregCr 0:e6ceb13d2d05 162 dio2.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[2] ) );
GregCr 0:e6ceb13d2d05 163 dio3.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[3] ) );
GregCr 0:e6ceb13d2d05 164 dio4.rise( this, static_cast< TriggerMB1xAS > ( irqHandlers[4] ) );
GregCr 0:e6ceb13d2d05 165 }
GregCr 0:e6ceb13d2d05 166
GregCr 0:e6ceb13d2d05 167 void SX1276MB1xAS::IoDeInit( void )
GregCr 0:e6ceb13d2d05 168 {
GregCr 0:e6ceb13d2d05 169 //nothing
GregCr 0:e6ceb13d2d05 170 }
GregCr 0:e6ceb13d2d05 171
GregCr 0:e6ceb13d2d05 172 uint8_t SX1276MB1xAS::GetPaSelect( uint32_t channel )
GregCr 0:e6ceb13d2d05 173 {
GregCr 0:e6ceb13d2d05 174 if( channel > RF_MID_BAND_THRESH )
GregCr 0:e6ceb13d2d05 175 {
GregCr 3:ca84be1f3fac 176 if( boardConnected == SX1276MB1LAS )
GregCr 1:f979673946c0 177 {
GregCr 1:f979673946c0 178 return RF_PACONFIG_PASELECT_PABOOST;
GregCr 1:f979673946c0 179 }
GregCr 1:f979673946c0 180 else
GregCr 1:f979673946c0 181 {
GregCr 1:f979673946c0 182 return RF_PACONFIG_PASELECT_RFO;
GregCr 1:f979673946c0 183 }
GregCr 0:e6ceb13d2d05 184 }
GregCr 0:e6ceb13d2d05 185 else
GregCr 0:e6ceb13d2d05 186 {
GregCr 0:e6ceb13d2d05 187 return RF_PACONFIG_PASELECT_RFO;
GregCr 0:e6ceb13d2d05 188 }
GregCr 0:e6ceb13d2d05 189 }
GregCr 0:e6ceb13d2d05 190
GregCr 0:e6ceb13d2d05 191 void SX1276MB1xAS::SetAntSwLowPower( bool status )
GregCr 0:e6ceb13d2d05 192 {
GregCr 0:e6ceb13d2d05 193 if( isRadioActive != status )
GregCr 0:e6ceb13d2d05 194 {
GregCr 0:e6ceb13d2d05 195 isRadioActive = status;
GregCr 0:e6ceb13d2d05 196
GregCr 0:e6ceb13d2d05 197 if( status == false )
GregCr 0:e6ceb13d2d05 198 {
GregCr 0:e6ceb13d2d05 199 AntSwInit( );
GregCr 0:e6ceb13d2d05 200 }
GregCr 0:e6ceb13d2d05 201 else
GregCr 0:e6ceb13d2d05 202 {
GregCr 0:e6ceb13d2d05 203 AntSwDeInit( );
GregCr 0:e6ceb13d2d05 204 }
GregCr 0:e6ceb13d2d05 205 }
GregCr 0:e6ceb13d2d05 206 }
GregCr 0:e6ceb13d2d05 207
GregCr 0:e6ceb13d2d05 208 void SX1276MB1xAS::AntSwInit( void )
GregCr 0:e6ceb13d2d05 209 {
GregCr 0:e6ceb13d2d05 210 antSwitch = 0;
GregCr 0:e6ceb13d2d05 211 }
GregCr 0:e6ceb13d2d05 212
GregCr 0:e6ceb13d2d05 213 void SX1276MB1xAS::AntSwDeInit( void )
GregCr 0:e6ceb13d2d05 214 {
GregCr 0:e6ceb13d2d05 215 antSwitch = 0;
GregCr 0:e6ceb13d2d05 216 }
GregCr 0:e6ceb13d2d05 217
GregCr 0:e6ceb13d2d05 218 void SX1276MB1xAS::SetAntSw( uint8_t rxTx )
GregCr 0:e6ceb13d2d05 219 {
GregCr 0:e6ceb13d2d05 220 if( this->rxTx == rxTx )
GregCr 0:e6ceb13d2d05 221 {
GregCr 0:e6ceb13d2d05 222 //no need to go further
GregCr 0:e6ceb13d2d05 223 return;
GregCr 0:e6ceb13d2d05 224 }
GregCr 0:e6ceb13d2d05 225
GregCr 0:e6ceb13d2d05 226 this->rxTx = rxTx;
GregCr 0:e6ceb13d2d05 227
GregCr 0:e6ceb13d2d05 228 if( rxTx != 0 )
GregCr 0:e6ceb13d2d05 229 {
GregCr 0:e6ceb13d2d05 230 antSwitch = 1;
GregCr 0:e6ceb13d2d05 231 }
GregCr 0:e6ceb13d2d05 232 else
GregCr 0:e6ceb13d2d05 233 {
GregCr 0:e6ceb13d2d05 234 antSwitch = 0;
GregCr 0:e6ceb13d2d05 235 }
GregCr 0:e6ceb13d2d05 236 }
GregCr 0:e6ceb13d2d05 237
GregCr 0:e6ceb13d2d05 238 bool SX1276MB1xAS::CheckRfFrequency( uint32_t frequency )
GregCr 0:e6ceb13d2d05 239 {
GregCr 0:e6ceb13d2d05 240 //TODO: Implement check, currently all frequencies are supported
GregCr 0:e6ceb13d2d05 241 return true;
GregCr 0:e6ceb13d2d05 242 }
GregCr 0:e6ceb13d2d05 243
GregCr 0:e6ceb13d2d05 244
GregCr 0:e6ceb13d2d05 245 void SX1276MB1xAS::Reset( void )
GregCr 0:e6ceb13d2d05 246 {
GregCr 4:f0ce52e94d3f 247 reset.output();
GregCr 0:e6ceb13d2d05 248 reset = 0;
GregCr 0:e6ceb13d2d05 249 wait_ms( 1 );
GregCr 4:f0ce52e94d3f 250 reset.input();
GregCr 0:e6ceb13d2d05 251 wait_ms( 6 );
GregCr 0:e6ceb13d2d05 252 }
GregCr 0:e6ceb13d2d05 253
GregCr 0:e6ceb13d2d05 254 void SX1276MB1xAS::Write( uint8_t addr, uint8_t data )
GregCr 0:e6ceb13d2d05 255 {
GregCr 0:e6ceb13d2d05 256 Write( addr, &data, 1 );
GregCr 0:e6ceb13d2d05 257 }
GregCr 0:e6ceb13d2d05 258
GregCr 0:e6ceb13d2d05 259 uint8_t SX1276MB1xAS::Read( uint8_t addr )
GregCr 0:e6ceb13d2d05 260 {
GregCr 0:e6ceb13d2d05 261 uint8_t data;
GregCr 0:e6ceb13d2d05 262 Read( addr, &data, 1 );
GregCr 0:e6ceb13d2d05 263 return data;
GregCr 0:e6ceb13d2d05 264 }
GregCr 0:e6ceb13d2d05 265
GregCr 0:e6ceb13d2d05 266 void SX1276MB1xAS::Write( uint8_t addr, uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 267 {
GregCr 0:e6ceb13d2d05 268 uint8_t i;
GregCr 0:e6ceb13d2d05 269
GregCr 0:e6ceb13d2d05 270 nss = 0;
GregCr 0:e6ceb13d2d05 271 spi.write( addr | 0x80 );
GregCr 0:e6ceb13d2d05 272 for( i = 0; i < size; i++ )
GregCr 0:e6ceb13d2d05 273 {
GregCr 0:e6ceb13d2d05 274 spi.write( buffer[i] );
GregCr 0:e6ceb13d2d05 275 }
GregCr 0:e6ceb13d2d05 276 nss = 1;
GregCr 0:e6ceb13d2d05 277 }
GregCr 0:e6ceb13d2d05 278
GregCr 0:e6ceb13d2d05 279 void SX1276MB1xAS::Read( uint8_t addr, uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 280 {
GregCr 0:e6ceb13d2d05 281 uint8_t i;
GregCr 0:e6ceb13d2d05 282
GregCr 0:e6ceb13d2d05 283 nss = 0;
GregCr 0:e6ceb13d2d05 284 spi.write( addr & 0x7F );
GregCr 0:e6ceb13d2d05 285 for( i = 0; i < size; i++ )
GregCr 0:e6ceb13d2d05 286 {
GregCr 0:e6ceb13d2d05 287 buffer[i] = spi.write( 0 );
GregCr 0:e6ceb13d2d05 288 }
GregCr 0:e6ceb13d2d05 289 nss = 1;
GregCr 0:e6ceb13d2d05 290 }
GregCr 0:e6ceb13d2d05 291
GregCr 0:e6ceb13d2d05 292 void SX1276MB1xAS::WriteFifo( uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 293 {
GregCr 0:e6ceb13d2d05 294 Write( 0, buffer, size );
GregCr 0:e6ceb13d2d05 295 }
GregCr 0:e6ceb13d2d05 296
GregCr 0:e6ceb13d2d05 297 void SX1276MB1xAS::ReadFifo( uint8_t *buffer, uint8_t size )
GregCr 0:e6ceb13d2d05 298 {
GregCr 0:e6ceb13d2d05 299 Read( 0, buffer, size );
GregCr 0:e6ceb13d2d05 300 }