SensorTile Dreamers / Mbed 2 deprecated LoRa_Rx

LoRa Protocol Ricezione

Dependencies:   SX1272Lib mbed

Fork of SX1272PingPong by Semtech

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?

UserRevisionLine numberNew 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 }