SensorTile Dreamers
/
LoRa_Rx
LoRa Protocol Ricezione
Fork of SX1272PingPong by
main.cpp@15:a152246cf3be, 2017-07-21 (annotated)
- Committer:
- franc_unina
- Date:
- Fri Jul 21 17:46:16 2017 +0000
- Revision:
- 15:a152246cf3be
- Parent:
- 14:ab6eecd44b7a
Ricezione
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
GregCr | 0:1ed39951ab7b | 1 | #include "mbed.h" |
GregCr | 4:5ece30264cd9 | 2 | #include "main.h" |
GregCr | 13:edb9b443c1dd | 3 | #include "sx1272-hal.h" |
GregCr | 8:f956dee63a56 | 4 | #include "debug.h" |
GregCr | 0:1ed39951ab7b | 5 | |
franc_unina | 15:a152246cf3be | 6 | |
GregCr | 0:1ed39951ab7b | 7 | /* Set this flag to '1' to display debug messages on the console */ |
GregCr | 13:edb9b443c1dd | 8 | #define DEBUG_MESSAGE 1 |
GregCr | 0:1ed39951ab7b | 9 | |
GregCr | 0:1ed39951ab7b | 10 | /* Set this flag to '1' to use the LoRa modulation or to '0' to use FSK modulation */ |
GregCr | 5:f2431c4fe3bb | 11 | #define USE_MODEM_LORA 1 |
GregCr | 0:1ed39951ab7b | 12 | #define USE_MODEM_FSK !USE_MODEM_LORA |
GregCr | 0:1ed39951ab7b | 13 | |
GregCr | 5:f2431c4fe3bb | 14 | #define RF_FREQUENCY 868000000 // Hz |
GregCr | 0:1ed39951ab7b | 15 | #define TX_OUTPUT_POWER 14 // 14 dBm |
GregCr | 0:1ed39951ab7b | 16 | |
GregCr | 0:1ed39951ab7b | 17 | #if USE_MODEM_LORA == 1 |
GregCr | 0:1ed39951ab7b | 18 | |
GregCr | 1:126d70d374f6 | 19 | #define LORA_BANDWIDTH 2 // [0: 125 kHz, |
GregCr | 0:1ed39951ab7b | 20 | // 1: 250 kHz, |
GregCr | 0:1ed39951ab7b | 21 | // 2: 500 kHz, |
GregCr | 0:1ed39951ab7b | 22 | // 3: Reserved] |
GregCr | 0:1ed39951ab7b | 23 | #define LORA_SPREADING_FACTOR 7 // [SF7..SF12] |
GregCr | 0:1ed39951ab7b | 24 | #define LORA_CODINGRATE 1 // [1: 4/5, |
GregCr | 0:1ed39951ab7b | 25 | // 2: 4/6, |
GregCr | 0:1ed39951ab7b | 26 | // 3: 4/7, |
GregCr | 0:1ed39951ab7b | 27 | // 4: 4/8] |
GregCr | 0:1ed39951ab7b | 28 | #define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx |
GregCr | 0:1ed39951ab7b | 29 | #define LORA_SYMBOL_TIMEOUT 5 // Symbols |
GregCr | 0:1ed39951ab7b | 30 | #define LORA_FIX_LENGTH_PAYLOAD_ON false |
GregCr | 3:8b9e2a4df4b5 | 31 | #define LORA_FHSS_ENABLED false |
GregCr | 3:8b9e2a4df4b5 | 32 | #define LORA_NB_SYMB_HOP 4 |
GregCr | 0:1ed39951ab7b | 33 | #define LORA_IQ_INVERSION_ON false |
GregCr | 3:8b9e2a4df4b5 | 34 | #define LORA_CRC_ENABLED true |
mluis | 14:ab6eecd44b7a | 35 | |
GregCr | 0:1ed39951ab7b | 36 | #elif USE_MODEM_FSK == 1 |
GregCr | 0:1ed39951ab7b | 37 | |
GregCr | 2:59e108728d71 | 38 | #define FSK_FDEV 25000 // Hz |
GregCr | 2:59e108728d71 | 39 | #define FSK_DATARATE 19200 // bps |
GregCr | 2:59e108728d71 | 40 | #define FSK_BANDWIDTH 50000 // Hz |
GregCr | 2:59e108728d71 | 41 | #define FSK_AFC_BANDWIDTH 83333 // Hz |
GregCr | 0:1ed39951ab7b | 42 | #define FSK_PREAMBLE_LENGTH 5 // Same for Tx and Rx |
GregCr | 0:1ed39951ab7b | 43 | #define FSK_FIX_LENGTH_PAYLOAD_ON false |
GregCr | 3:8b9e2a4df4b5 | 44 | #define FSK_CRC_ENABLED true |
mluis | 14:ab6eecd44b7a | 45 | |
GregCr | 0:1ed39951ab7b | 46 | #else |
GregCr | 0:1ed39951ab7b | 47 | #error "Please define a modem in the compiler options." |
GregCr | 0:1ed39951ab7b | 48 | #endif |
GregCr | 0:1ed39951ab7b | 49 | |
mluis | 14:ab6eecd44b7a | 50 | #define RX_TIMEOUT_VALUE 3500 // in ms |
GregCr | 0:1ed39951ab7b | 51 | #define BUFFER_SIZE 32 // Define the payload size here |
GregCr | 0:1ed39951ab7b | 52 | |
GregCr | 8:f956dee63a56 | 53 | #if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) ) |
mluis | 14:ab6eecd44b7a | 54 | DigitalOut led( LED2 ); |
GregCr | 3:8b9e2a4df4b5 | 55 | #else |
mluis | 14:ab6eecd44b7a | 56 | DigitalOut led( LED1 ); |
GregCr | 3:8b9e2a4df4b5 | 57 | #endif |
GregCr | 3:8b9e2a4df4b5 | 58 | |
franc_unina | 15:a152246cf3be | 59 | Timer timer; |
franc_unina | 15:a152246cf3be | 60 | |
franc_unina | 15:a152246cf3be | 61 | |
GregCr | 0:1ed39951ab7b | 62 | /* |
GregCr | 0:1ed39951ab7b | 63 | * Global variables declarations |
GregCr | 0:1ed39951ab7b | 64 | */ |
mluis | 10:7af820d1e1df | 65 | typedef enum |
mluis | 10:7af820d1e1df | 66 | { |
mluis | 10:7af820d1e1df | 67 | LOWPOWER = 0, |
mluis | 10:7af820d1e1df | 68 | IDLE, |
mluis | 14:ab6eecd44b7a | 69 | |
mluis | 10:7af820d1e1df | 70 | RX, |
mluis | 10:7af820d1e1df | 71 | RX_TIMEOUT, |
mluis | 10:7af820d1e1df | 72 | RX_ERROR, |
mluis | 14:ab6eecd44b7a | 73 | |
mluis | 10:7af820d1e1df | 74 | TX, |
mluis | 10:7af820d1e1df | 75 | TX_TIMEOUT, |
mluis | 14:ab6eecd44b7a | 76 | |
mluis | 10:7af820d1e1df | 77 | CAD, |
mluis | 10:7af820d1e1df | 78 | CAD_DONE |
mluis | 10:7af820d1e1df | 79 | }AppStates_t; |
GregCr | 0:1ed39951ab7b | 80 | |
mluis | 10:7af820d1e1df | 81 | volatile AppStates_t State = LOWPOWER; |
mluis | 10:7af820d1e1df | 82 | |
mluis | 10:7af820d1e1df | 83 | /*! |
mluis | 10:7af820d1e1df | 84 | * Radio events function pointer |
mluis | 10:7af820d1e1df | 85 | */ |
mluis | 10:7af820d1e1df | 86 | static RadioEvents_t RadioEvents; |
mluis | 10:7af820d1e1df | 87 | |
mluis | 10:7af820d1e1df | 88 | /* |
mluis | 10:7af820d1e1df | 89 | * Global variables declarations |
mluis | 10:7af820d1e1df | 90 | */ |
GregCr | 13:edb9b443c1dd | 91 | SX1272MB2xAS Radio( NULL ); |
GregCr | 0:1ed39951ab7b | 92 | |
franc_unina | 15:a152246cf3be | 93 | const uint8_t PingMsg[] = "LOR3"; |
franc_unina | 15:a152246cf3be | 94 | const uint8_t PongMs2[] = "LOR1"; |
franc_unina | 15:a152246cf3be | 95 | const uint8_t PongMs3[] = "LOR2"; |
GregCr | 0:1ed39951ab7b | 96 | |
GregCr | 0:1ed39951ab7b | 97 | uint16_t BufferSize = BUFFER_SIZE; |
GregCr | 0:1ed39951ab7b | 98 | uint8_t Buffer[BUFFER_SIZE]; |
GregCr | 0:1ed39951ab7b | 99 | |
GregCr | 5:f2431c4fe3bb | 100 | int16_t RssiValue = 0.0; |
GregCr | 5:f2431c4fe3bb | 101 | int8_t SnrValue = 0.0; |
GregCr | 0:1ed39951ab7b | 102 | |
franc_unina | 15:a152246cf3be | 103 | int32_t TimerValue=0; |
franc_unina | 15:a152246cf3be | 104 | int32_t TimeStampNew=0; |
franc_unina | 15:a152246cf3be | 105 | int32_t TimeStampOld=0; |
franc_unina | 15:a152246cf3be | 106 | |
mluis | 14:ab6eecd44b7a | 107 | int main( void ) |
GregCr | 0:1ed39951ab7b | 108 | { |
GregCr | 0:1ed39951ab7b | 109 | uint8_t i; |
franc_unina | 15:a152246cf3be | 110 | |
mluis | 14:ab6eecd44b7a | 111 | |
GregCr | 13:edb9b443c1dd | 112 | debug( "\n\n\r SX1272 Ping Pong Demo Application \n\n\r" ); |
mluis | 10:7af820d1e1df | 113 | |
mluis | 10:7af820d1e1df | 114 | // Initialize Radio driver |
mluis | 10:7af820d1e1df | 115 | RadioEvents.TxDone = OnTxDone; |
mluis | 10:7af820d1e1df | 116 | RadioEvents.RxDone = OnRxDone; |
mluis | 10:7af820d1e1df | 117 | RadioEvents.RxError = OnRxError; |
mluis | 10:7af820d1e1df | 118 | RadioEvents.TxTimeout = OnTxTimeout; |
mluis | 10:7af820d1e1df | 119 | RadioEvents.RxTimeout = OnRxTimeout; |
mluis | 10:7af820d1e1df | 120 | Radio.Init( &RadioEvents ); |
mluis | 14:ab6eecd44b7a | 121 | |
GregCr | 7:c1bbd6c56979 | 122 | // verify the connection with the board |
GregCr | 7:c1bbd6c56979 | 123 | while( Radio.Read( REG_VERSION ) == 0x00 ) |
GregCr | 2:59e108728d71 | 124 | { |
GregCr | 7:c1bbd6c56979 | 125 | debug( "Radio could not be detected!\n\r", NULL ); |
GregCr | 7:c1bbd6c56979 | 126 | wait( 1 ); |
GregCr | 2:59e108728d71 | 127 | } |
mluis | 14:ab6eecd44b7a | 128 | |
mluis | 14:ab6eecd44b7a | 129 | debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1272MB2XAS ) ), "\n\r > Board Type: SX1272MB2xAS < \n\r" ); |
mluis | 14:ab6eecd44b7a | 130 | |
GregCr | 0:1ed39951ab7b | 131 | Radio.SetChannel( RF_FREQUENCY ); |
GregCr | 0:1ed39951ab7b | 132 | |
GregCr | 0:1ed39951ab7b | 133 | #if USE_MODEM_LORA == 1 |
mluis | 14:ab6eecd44b7a | 134 | |
mluis | 14:ab6eecd44b7a | 135 | debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r" ); |
mluis | 14:ab6eecd44b7a | 136 | debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r" ); |
GregCr | 7:c1bbd6c56979 | 137 | |
GregCr | 0:1ed39951ab7b | 138 | Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH, |
GregCr | 0:1ed39951ab7b | 139 | LORA_SPREADING_FACTOR, LORA_CODINGRATE, |
GregCr | 0:1ed39951ab7b | 140 | LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON, |
mluis | 14:ab6eecd44b7a | 141 | LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP, |
mluis | 14:ab6eecd44b7a | 142 | LORA_IQ_INVERSION_ON, 2000 ); |
mluis | 14:ab6eecd44b7a | 143 | |
GregCr | 0:1ed39951ab7b | 144 | Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR, |
GregCr | 0:1ed39951ab7b | 145 | LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH, |
mluis | 9:e764990e45df | 146 | LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0, |
mluis | 14:ab6eecd44b7a | 147 | LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP, |
GregCr | 3:8b9e2a4df4b5 | 148 | LORA_IQ_INVERSION_ON, true ); |
mluis | 14:ab6eecd44b7a | 149 | |
GregCr | 0:1ed39951ab7b | 150 | #elif USE_MODEM_FSK == 1 |
GregCr | 0:1ed39951ab7b | 151 | |
mluis | 14:ab6eecd44b7a | 152 | debug("\n\n\r > FSK Mode < \n\n\r" ); |
GregCr | 0:1ed39951ab7b | 153 | Radio.SetTxConfig( MODEM_FSK, TX_OUTPUT_POWER, FSK_FDEV, 0, |
GregCr | 0:1ed39951ab7b | 154 | FSK_DATARATE, 0, |
GregCr | 0:1ed39951ab7b | 155 | FSK_PREAMBLE_LENGTH, FSK_FIX_LENGTH_PAYLOAD_ON, |
mluis | 14:ab6eecd44b7a | 156 | FSK_CRC_ENABLED, 0, 0, 0, 2000 ); |
mluis | 14:ab6eecd44b7a | 157 | |
GregCr | 0:1ed39951ab7b | 158 | Radio.SetRxConfig( MODEM_FSK, FSK_BANDWIDTH, FSK_DATARATE, |
GregCr | 0:1ed39951ab7b | 159 | 0, FSK_AFC_BANDWIDTH, FSK_PREAMBLE_LENGTH, |
mluis | 9:e764990e45df | 160 | 0, FSK_FIX_LENGTH_PAYLOAD_ON, 0, FSK_CRC_ENABLED, |
GregCr | 3:8b9e2a4df4b5 | 161 | 0, 0, false, true ); |
mluis | 14:ab6eecd44b7a | 162 | |
GregCr | 0:1ed39951ab7b | 163 | #else |
GregCr | 0:1ed39951ab7b | 164 | |
GregCr | 0:1ed39951ab7b | 165 | #error "Please define a modem in the compiler options." |
GregCr | 0:1ed39951ab7b | 166 | |
GregCr | 0:1ed39951ab7b | 167 | #endif |
mluis | 14:ab6eecd44b7a | 168 | |
mluis | 14:ab6eecd44b7a | 169 | debug_if( DEBUG_MESSAGE, "Starting Ping-Pong loop\r\n" ); |
mluis | 14:ab6eecd44b7a | 170 | |
GregCr | 3:8b9e2a4df4b5 | 171 | led = 0; |
mluis | 14:ab6eecd44b7a | 172 | |
GregCr | 0:1ed39951ab7b | 173 | Radio.Rx( RX_TIMEOUT_VALUE ); |
franc_unina | 15:a152246cf3be | 174 | |
franc_unina | 15:a152246cf3be | 175 | timer.start(); |
mluis | 14:ab6eecd44b7a | 176 | |
GregCr | 0:1ed39951ab7b | 177 | while( 1 ) |
GregCr | 0:1ed39951ab7b | 178 | { |
franc_unina | 15:a152246cf3be | 179 | switch(State){ |
franc_unina | 15:a152246cf3be | 180 | case RX: |
franc_unina | 15:a152246cf3be | 181 | //timer.stop(); |
franc_unina | 15:a152246cf3be | 182 | |
franc_unina | 15:a152246cf3be | 183 | //timer.reset(); |
franc_unina | 15:a152246cf3be | 184 | //timer.start(); |
franc_unina | 15:a152246cf3be | 185 | if( strncmp( ( const char* )Buffer, ( const char* )PongMs2, 4 ) == 0 ) |
GregCr | 0:1ed39951ab7b | 186 | { |
franc_unina | 15:a152246cf3be | 187 | TimeStampNew=timer.read_ms(); |
franc_unina | 15:a152246cf3be | 188 | TimerValue=TimeStampNew-TimeStampOld; |
franc_unina | 15:a152246cf3be | 189 | TimeStampOld=TimeStampNew; |
franc_unina | 15:a152246cf3be | 190 | |
franc_unina | 15:a152246cf3be | 191 | led = !led; |
franc_unina | 15:a152246cf3be | 192 | debug( "I am LOR2\r\n" ); |
franc_unina | 15:a152246cf3be | 193 | printf("Data received from...%s\r\n",Buffer); |
franc_unina | 15:a152246cf3be | 194 | printf("TimeStamp %d\n\r",TimeStampNew); |
franc_unina | 15:a152246cf3be | 195 | printf("Time %d\n\r",TimerValue); |
franc_unina | 15:a152246cf3be | 196 | Radio.Sleep( ); |
franc_unina | 15:a152246cf3be | 197 | Buffer[0] = 'A'; |
franc_unina | 15:a152246cf3be | 198 | }//end if1 |
franc_unina | 15:a152246cf3be | 199 | wait_ms(10); |
franc_unina | 15:a152246cf3be | 200 | Radio.Rx( RX_TIMEOUT_VALUE );//SETTA LA RADIO IN MODALITA' RICEZIONE |
franc_unina | 15:a152246cf3be | 201 | |
franc_unina | 15:a152246cf3be | 202 | break; |
franc_unina | 15:a152246cf3be | 203 | |
franc_unina | 15:a152246cf3be | 204 | default: |
franc_unina | 15:a152246cf3be | 205 | break; |
franc_unina | 15:a152246cf3be | 206 | }; |
franc_unina | 15:a152246cf3be | 207 | }//end while |
franc_unina | 15:a152246cf3be | 208 | }//end main |
GregCr | 0:1ed39951ab7b | 209 | |
GregCr | 0:1ed39951ab7b | 210 | void OnTxDone( void ) |
GregCr | 0:1ed39951ab7b | 211 | { |
GregCr | 5:f2431c4fe3bb | 212 | Radio.Sleep( ); |
GregCr | 0:1ed39951ab7b | 213 | State = TX; |
GregCr | 7:c1bbd6c56979 | 214 | debug_if( DEBUG_MESSAGE, "> OnTxDone\n\r" ); |
GregCr | 0:1ed39951ab7b | 215 | } |
GregCr | 0:1ed39951ab7b | 216 | |
mluis | 14:ab6eecd44b7a | 217 | void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr ) |
GregCr | 0:1ed39951ab7b | 218 | { |
GregCr | 0:1ed39951ab7b | 219 | Radio.Sleep( ); |
GregCr | 0:1ed39951ab7b | 220 | BufferSize = size; |
GregCr | 0:1ed39951ab7b | 221 | memcpy( Buffer, payload, BufferSize ); |
GregCr | 0:1ed39951ab7b | 222 | RssiValue = rssi; |
GregCr | 0:1ed39951ab7b | 223 | SnrValue = snr; |
GregCr | 0:1ed39951ab7b | 224 | State = RX; |
GregCr | 7:c1bbd6c56979 | 225 | debug_if( DEBUG_MESSAGE, "> OnRxDone\n\r" ); |
GregCr | 0:1ed39951ab7b | 226 | } |
GregCr | 0:1ed39951ab7b | 227 | |
GregCr | 0:1ed39951ab7b | 228 | void OnTxTimeout( void ) |
GregCr | 0:1ed39951ab7b | 229 | { |
GregCr | 0:1ed39951ab7b | 230 | Radio.Sleep( ); |
GregCr | 0:1ed39951ab7b | 231 | State = TX_TIMEOUT; |
GregCr | 7:c1bbd6c56979 | 232 | debug_if( DEBUG_MESSAGE, "> OnTxTimeout\n\r" ); |
GregCr | 0:1ed39951ab7b | 233 | } |
GregCr | 0:1ed39951ab7b | 234 | |
GregCr | 0:1ed39951ab7b | 235 | void OnRxTimeout( void ) |
GregCr | 0:1ed39951ab7b | 236 | { |
GregCr | 0:1ed39951ab7b | 237 | Radio.Sleep( ); |
mluis | 14:ab6eecd44b7a | 238 | Buffer[BufferSize] = 0; |
GregCr | 0:1ed39951ab7b | 239 | State = RX_TIMEOUT; |
GregCr | 7:c1bbd6c56979 | 240 | debug_if( DEBUG_MESSAGE, "> OnRxTimeout\n\r" ); |
GregCr | 0:1ed39951ab7b | 241 | } |
GregCr | 0:1ed39951ab7b | 242 | |
GregCr | 0:1ed39951ab7b | 243 | void OnRxError( void ) |
GregCr | 0:1ed39951ab7b | 244 | { |
GregCr | 0:1ed39951ab7b | 245 | Radio.Sleep( ); |
GregCr | 0:1ed39951ab7b | 246 | State = RX_ERROR; |
GregCr | 7:c1bbd6c56979 | 247 | debug_if( DEBUG_MESSAGE, "> OnRxError\n\r" ); |
GregCr | 0:1ed39951ab7b | 248 | } |