Master ESET LORAWAN / Mbed 2 deprecated SX1272PingPong

Ping Ping entre un Master et un slave LORA

Dependencies:   SX1272Lib mbed

Fork of SX1272PingPong by Semtech

main.cpp@15:063aa5212203, 2018-03-05 (annotated)

Committer:
montagny
Date:
Mon Mar 05 21:09:52 2018 +0000
Revision:
15:063aa5212203
Parent:
14:ab6eecd44b7a
Child:
16:ef85c3a61509
ok

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
GregCr 13:edb9b443c1dd 6 #define DEBUG_MESSAGE 1
GregCr 0:1ed39951ab7b 7
GregCr 0:1ed39951ab7b 8 /* Set this flag to '1' to use the LoRa modulation or to '0' to use FSK modulation */
GregCr 5:f2431c4fe3bb 9 #define USE_MODEM_LORA 1
GregCr 0:1ed39951ab7b 10 #define USE_MODEM_FSK !USE_MODEM_LORA
GregCr 0:1ed39951ab7b 11
GregCr 5:f2431c4fe3bb 12 #define RF_FREQUENCY 868000000 // Hz
montagny 15:063aa5212203 13 #define TX_OUTPUT_POWER 14 // 14 dBm
montagny 15:063aa5212203 14 /**** LORA_BANDWIDTH 0:125khz / 1:250khz / 2:500khz ****/
montagny 15:063aa5212203 15 #define LORA_BANDWIDTH 2
montagny 15:063aa5212203 16 #define LORA_SPREADING_FACTOR 8 // [SF7..SF12]
montagny 15:063aa5212203 17 /**** LORA_CODINGRATE 1:4/5 / 2:4/6 / 3:4/7 / 4:4/8 ****/
montagny 15:063aa5212203 18 #define LORA_CODINGRATE 1 // [1: 4/5,
montagny 15:063aa5212203 19 #define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
montagny 15:063aa5212203 20 #define LORA_SYMBOL_TIMEOUT 5 // Symbols
montagny 15:063aa5212203 21 #define LORA_FIX_LENGTH_PAYLOAD_ON false
montagny 15:063aa5212203 22 #define LORA_FHSS_ENABLED false
montagny 15:063aa5212203 23 #define LORA_NB_SYMB_HOP 4
montagny 15:063aa5212203 24 #define LORA_IQ_INVERSION_ON false
montagny 15:063aa5212203 25 #define LORA_CRC_ENABLED true
mluis 14:ab6eecd44b7a 26
GregCr 0:1ed39951ab7b 27
mluis 14:ab6eecd44b7a 28
montagny 15:063aa5212203 29 #define RX_TIMEOUT_VALUE 3500 // in ms
montagny 15:063aa5212203 30 #define BUFFER_SIZE 32 // Define the payload size here
GregCr 0:1ed39951ab7b 31
mluis 14:ab6eecd44b7a 32 DigitalOut led( LED1 );
GregCr 3:8b9e2a4df4b5 33
GregCr 0:1ed39951ab7b 34 /*
GregCr 0:1ed39951ab7b 35 * Global variables declarations
GregCr 0:1ed39951ab7b 36 */
mluis 10:7af820d1e1df 37 typedef enum
mluis 10:7af820d1e1df 38 {
mluis 10:7af820d1e1df 39 LOWPOWER = 0,
mluis 10:7af820d1e1df 40 IDLE,
mluis 14:ab6eecd44b7a 41
mluis 10:7af820d1e1df 42 RX,
mluis 10:7af820d1e1df 43 RX_TIMEOUT,
mluis 10:7af820d1e1df 44 RX_ERROR,
mluis 14:ab6eecd44b7a 45
mluis 10:7af820d1e1df 46 TX,
mluis 10:7af820d1e1df 47 TX_TIMEOUT,
mluis 14:ab6eecd44b7a 48
mluis 10:7af820d1e1df 49 CAD,
mluis 10:7af820d1e1df 50 CAD_DONE
mluis 10:7af820d1e1df 51 }AppStates_t;
GregCr 0:1ed39951ab7b 52
mluis 10:7af820d1e1df 53 volatile AppStates_t State = LOWPOWER;
mluis 10:7af820d1e1df 54
mluis 10:7af820d1e1df 55 /*!
mluis 10:7af820d1e1df 56 * Radio events function pointer
mluis 10:7af820d1e1df 57 */
mluis 10:7af820d1e1df 58 static RadioEvents_t RadioEvents;
mluis 10:7af820d1e1df 59
mluis 10:7af820d1e1df 60 /*
mluis 10:7af820d1e1df 61 * Global variables declarations
mluis 10:7af820d1e1df 62 */
GregCr 13:edb9b443c1dd 63 SX1272MB2xAS Radio( NULL );
GregCr 0:1ed39951ab7b 64
GregCr 0:1ed39951ab7b 65 const uint8_t PingMsg[] = "PING";
GregCr 0:1ed39951ab7b 66 const uint8_t PongMsg[] = "PONG";
GregCr 0:1ed39951ab7b 67
GregCr 0:1ed39951ab7b 68 uint16_t BufferSize = BUFFER_SIZE;
GregCr 0:1ed39951ab7b 69 uint8_t Buffer[BUFFER_SIZE];
GregCr 0:1ed39951ab7b 70
GregCr 5:f2431c4fe3bb 71 int16_t RssiValue = 0.0;
GregCr 5:f2431c4fe3bb 72 int8_t SnrValue = 0.0;
GregCr 0:1ed39951ab7b 73
mluis 14:ab6eecd44b7a 74 int main( void )
GregCr 0:1ed39951ab7b 75 {
GregCr 0:1ed39951ab7b 76 uint8_t i;
GregCr 0:1ed39951ab7b 77 bool isMaster = true;
mluis 14:ab6eecd44b7a 78
montagny 15:063aa5212203 79 debug( "\n\r > SX1272 Ping Pong Demo Application " );
mluis 10:7af820d1e1df 80
mluis 10:7af820d1e1df 81 // Initialize Radio driver
mluis 10:7af820d1e1df 82 RadioEvents.TxDone = OnTxDone;
mluis 10:7af820d1e1df 83 RadioEvents.RxDone = OnRxDone;
mluis 10:7af820d1e1df 84 RadioEvents.RxError = OnRxError;
mluis 10:7af820d1e1df 85 RadioEvents.TxTimeout = OnTxTimeout;
mluis 10:7af820d1e1df 86 RadioEvents.RxTimeout = OnRxTimeout;
mluis 10:7af820d1e1df 87 Radio.Init( &RadioEvents );
mluis 14:ab6eecd44b7a 88
GregCr 7:c1bbd6c56979 89 // verify the connection with the board
GregCr 7:c1bbd6c56979 90 while( Radio.Read( REG_VERSION ) == 0x00 )
GregCr 2:59e108728d71 91 {
GregCr 7:c1bbd6c56979 92 debug( "Radio could not be detected!\n\r", NULL );
GregCr 7:c1bbd6c56979 93 wait( 1 );
GregCr 2:59e108728d71 94 }
mluis 14:ab6eecd44b7a 95
GregCr 0:1ed39951ab7b 96 Radio.SetChannel( RF_FREQUENCY );
GregCr 0:1ed39951ab7b 97 Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
GregCr 0:1ed39951ab7b 98 LORA_SPREADING_FACTOR, LORA_CODINGRATE,
GregCr 0:1ed39951ab7b 99 LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
mluis 14:ab6eecd44b7a 100 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
mluis 14:ab6eecd44b7a 101 LORA_IQ_INVERSION_ON, 2000 );
GregCr 0:1ed39951ab7b 102 Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
GregCr 0:1ed39951ab7b 103 LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
mluis 9:e764990e45df 104 LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0,
mluis 14:ab6eecd44b7a 105 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
GregCr 3:8b9e2a4df4b5 106 LORA_IQ_INVERSION_ON, true );
mluis 14:ab6eecd44b7a 107
GregCr 0:1ed39951ab7b 108
montagny 15:063aa5212203 109 debug( "Starting Ping-Pong loop\r\n\n" );
montagny 15:063aa5212203 110 debug( "Start as Master : Envoi de Ping \r\n" );
GregCr 3:8b9e2a4df4b5 111 led = 0;
mluis 14:ab6eecd44b7a 112
GregCr 0:1ed39951ab7b 113 Radio.Rx( RX_TIMEOUT_VALUE );
mluis 14:ab6eecd44b7a 114
GregCr 0:1ed39951ab7b 115 while( 1 )
GregCr 0:1ed39951ab7b 116 {
GregCr 0:1ed39951ab7b 117 switch( State )
GregCr 0:1ed39951ab7b 118 {
GregCr 0:1ed39951ab7b 119 case RX:
montagny 15:063aa5212203 120 debug( "\r\n" );
GregCr 0:1ed39951ab7b 121 if( isMaster == true )
GregCr 0:1ed39951ab7b 122 {
GregCr 0:1ed39951ab7b 123 if( BufferSize > 0 )
GregCr 0:1ed39951ab7b 124 {
GregCr 0:1ed39951ab7b 125 if( strncmp( ( const char* )Buffer, ( const char* )PongMsg, 4 ) == 0 )
GregCr 0:1ed39951ab7b 126 {
GregCr 3:8b9e2a4df4b5 127 led = !led;
montagny 15:063aa5212203 128 debug( "Master : Pong recu !!!\r\n" );
mluis 14:ab6eecd44b7a 129 // Send the next PING frame
GregCr 7:c1bbd6c56979 130 strcpy( ( char* )Buffer, ( char* )PingMsg );
mluis 14:ab6eecd44b7a 131 // We fill the buffer with numbers for the payload
GregCr 0:1ed39951ab7b 132 for( i = 4; i < BufferSize; i++ )
GregCr 0:1ed39951ab7b 133 {
GregCr 0:1ed39951ab7b 134 Buffer[i] = i - 4;
GregCr 0:1ed39951ab7b 135 }
montagny 15:063aa5212203 136 wait_ms( 1000 );
montagny 15:063aa5212203 137 debug( "Master : Envoi de Ping\r\n" );
GregCr 0:1ed39951ab7b 138 Radio.Send( Buffer, BufferSize );
GregCr 0:1ed39951ab7b 139 }
GregCr 2:59e108728d71 140 else if( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 )
GregCr 0:1ed39951ab7b 141 { // A master already exists then become a slave
montagny 15:063aa5212203 142 debug( "Master : Ping recu !!!\r\n" );
montagny 15:063aa5212203 143 debug( "A master already exists then become a slave\r\n" );
GregCr 3:8b9e2a4df4b5 144 led = !led;
GregCr 0:1ed39951ab7b 145 isMaster = false;
mluis 14:ab6eecd44b7a 146 // Send the next PONG frame
GregCr 7:c1bbd6c56979 147 strcpy( ( char* )Buffer, ( char* )PongMsg );
mluis 14:ab6eecd44b7a 148 // We fill the buffer with numbers for the payload
GregCr 2:59e108728d71 149 for( i = 4; i < BufferSize; i++ )
GregCr 2:59e108728d71 150 {
GregCr 2:59e108728d71 151 Buffer[i] = i - 4;
GregCr 2:59e108728d71 152 }
montagny 15:063aa5212203 153 wait_ms( 1000 );
montagny 15:063aa5212203 154 debug( "Master : Envoi de Pong\r\n" );
GregCr 2:59e108728d71 155 Radio.Send( Buffer, BufferSize );
GregCr 2:59e108728d71 156 }
GregCr 2:59e108728d71 157 else // valid reception but neither a PING or a PONG message
GregCr 2:59e108728d71 158 { // Set device as master ans start again
GregCr 2:59e108728d71 159 isMaster = true;
montagny 15:063aa5212203 160 debug( "Master : Reception valide, Ni Ping, Ni Pong\r\n" );
GregCr 0:1ed39951ab7b 161 Radio.Rx( RX_TIMEOUT_VALUE );
mluis 14:ab6eecd44b7a 162 }
GregCr 0:1ed39951ab7b 163 }
GregCr 0:1ed39951ab7b 164 }
GregCr 0:1ed39951ab7b 165 else
GregCr 0:1ed39951ab7b 166 {
GregCr 0:1ed39951ab7b 167 if( BufferSize > 0 )
GregCr 0:1ed39951ab7b 168 {
GregCr 0:1ed39951ab7b 169 if( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 )
GregCr 0:1ed39951ab7b 170 {
GregCr 3:8b9e2a4df4b5 171 led = !led;
montagny 15:063aa5212203 172 debug( "Slave : Ping recu\r\n" );
GregCr 2:59e108728d71 173 // Send the reply to the PING string
GregCr 7:c1bbd6c56979 174 strcpy( ( char* )Buffer, ( char* )PongMsg );
mluis 14:ab6eecd44b7a 175 // We fill the buffer with numbers for the payload
GregCr 0:1ed39951ab7b 176 for( i = 4; i < BufferSize; i++ )
GregCr 0:1ed39951ab7b 177 {
GregCr 0:1ed39951ab7b 178 Buffer[i] = i - 4;
GregCr 0:1ed39951ab7b 179 }
montagny 15:063aa5212203 180 wait_ms( 1000 );
montagny 15:063aa5212203 181 debug( "Slave : Envoi de Pong\r\n" );
GregCr 0:1ed39951ab7b 182 Radio.Send( Buffer, BufferSize );
GregCr 0:1ed39951ab7b 183 }
GregCr 2:59e108728d71 184 else // valid reception but not a PING as expected
GregCr 2:59e108728d71 185 { // Set device as master and start again
GregCr 2:59e108728d71 186 isMaster = true;
montagny 15:063aa5212203 187 debug( "Slave : Reception valide, mais pas un Ping, on repasse Master\r\n" );
GregCr 2:59e108728d71 188 Radio.Rx( RX_TIMEOUT_VALUE );
mluis 14:ab6eecd44b7a 189 }
GregCr 0:1ed39951ab7b 190 }
GregCr 0:1ed39951ab7b 191 }
GregCr 0:1ed39951ab7b 192 State = LOWPOWER;
GregCr 0:1ed39951ab7b 193 break;
mluis 14:ab6eecd44b7a 194 case TX:
mluis 14:ab6eecd44b7a 195 led = !led;
GregCr 2:59e108728d71 196 if( isMaster == true )
GregCr 0:1ed39951ab7b 197 {
montagny 15:063aa5212203 198 //debug( "Ping...\r\n" );
GregCr 0:1ed39951ab7b 199 }
GregCr 0:1ed39951ab7b 200 else
GregCr 0:1ed39951ab7b 201 {
montagny 15:063aa5212203 202 //debug( "Pong...\r\n" );
GregCr 0:1ed39951ab7b 203 }
GregCr 0:1ed39951ab7b 204 Radio.Rx( RX_TIMEOUT_VALUE );
GregCr 0:1ed39951ab7b 205 State = LOWPOWER;
GregCr 0:1ed39951ab7b 206 break;
GregCr 0:1ed39951ab7b 207 case RX_TIMEOUT:
GregCr 0:1ed39951ab7b 208 if( isMaster == true )
GregCr 0:1ed39951ab7b 209 {
GregCr 0:1ed39951ab7b 210 // Send the next PING frame
GregCr 7:c1bbd6c56979 211 strcpy( ( char* )Buffer, ( char* )PingMsg );
GregCr 0:1ed39951ab7b 212 for( i = 4; i < BufferSize; i++ )
GregCr 0:1ed39951ab7b 213 {
GregCr 0:1ed39951ab7b 214 Buffer[i] = i - 4;
GregCr 0:1ed39951ab7b 215 }
montagny 15:063aa5212203 216 wait_ms( 1000 );
GregCr 0:1ed39951ab7b 217 Radio.Send( Buffer, BufferSize );
GregCr 0:1ed39951ab7b 218 }
GregCr 0:1ed39951ab7b 219 else
GregCr 0:1ed39951ab7b 220 {
mluis 14:ab6eecd44b7a 221 Radio.Rx( RX_TIMEOUT_VALUE );
mluis 14:ab6eecd44b7a 222 }
GregCr 0:1ed39951ab7b 223 State = LOWPOWER;
GregCr 0:1ed39951ab7b 224 break;
GregCr 0:1ed39951ab7b 225 case RX_ERROR:
GregCr 7:c1bbd6c56979 226 // We have received a Packet with a CRC error, send reply as if packet was correct
GregCr 0:1ed39951ab7b 227 if( isMaster == true )
GregCr 0:1ed39951ab7b 228 {
GregCr 0:1ed39951ab7b 229 // Send the next PING frame
GregCr 7:c1bbd6c56979 230 strcpy( ( char* )Buffer, ( char* )PingMsg );
GregCr 0:1ed39951ab7b 231 for( i = 4; i < BufferSize; i++ )
GregCr 0:1ed39951ab7b 232 {
GregCr 0:1ed39951ab7b 233 Buffer[i] = i - 4;
GregCr 0:1ed39951ab7b 234 }
montagny 15:063aa5212203 235 wait_ms( 1000 );
GregCr 0:1ed39951ab7b 236 Radio.Send( Buffer, BufferSize );
GregCr 0:1ed39951ab7b 237 }
GregCr 0:1ed39951ab7b 238 else
GregCr 0:1ed39951ab7b 239 {
GregCr 2:59e108728d71 240 // Send the next PONG frame
GregCr 7:c1bbd6c56979 241 strcpy( ( char* )Buffer, ( char* )PongMsg );
GregCr 2:59e108728d71 242 for( i = 4; i < BufferSize; i++ )
GregCr 2:59e108728d71 243 {
GregCr 2:59e108728d71 244 Buffer[i] = i - 4;
GregCr 2:59e108728d71 245 }
montagny 15:063aa5212203 246 wait_ms( 1000 );
GregCr 2:59e108728d71 247 Radio.Send( Buffer, BufferSize );
GregCr 0:1ed39951ab7b 248 }
GregCr 0:1ed39951ab7b 249 State = LOWPOWER;
GregCr 0:1ed39951ab7b 250 break;
GregCr 0:1ed39951ab7b 251 case TX_TIMEOUT:
GregCr 0:1ed39951ab7b 252 Radio.Rx( RX_TIMEOUT_VALUE );
GregCr 0:1ed39951ab7b 253 State = LOWPOWER;
GregCr 0:1ed39951ab7b 254 break;
GregCr 0:1ed39951ab7b 255 case LOWPOWER:
GregCr 0:1ed39951ab7b 256 break;
GregCr 0:1ed39951ab7b 257 default:
GregCr 0:1ed39951ab7b 258 State = LOWPOWER;
GregCr 0:1ed39951ab7b 259 break;
mluis 14:ab6eecd44b7a 260 }
GregCr 0:1ed39951ab7b 261 }
GregCr 0:1ed39951ab7b 262 }
GregCr 0:1ed39951ab7b 263
GregCr 0:1ed39951ab7b 264 void OnTxDone( void )
GregCr 0:1ed39951ab7b 265 {
GregCr 5:f2431c4fe3bb 266 Radio.Sleep( );
GregCr 0:1ed39951ab7b 267 State = TX;
GregCr 7:c1bbd6c56979 268 debug_if( DEBUG_MESSAGE, "> OnTxDone\n\r" );
GregCr 0:1ed39951ab7b 269 }
GregCr 0:1ed39951ab7b 270
mluis 14:ab6eecd44b7a 271 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
GregCr 0:1ed39951ab7b 272 {
GregCr 0:1ed39951ab7b 273 Radio.Sleep( );
GregCr 0:1ed39951ab7b 274 BufferSize = size;
GregCr 0:1ed39951ab7b 275 memcpy( Buffer, payload, BufferSize );
GregCr 0:1ed39951ab7b 276 RssiValue = rssi;
GregCr 0:1ed39951ab7b 277 SnrValue = snr;
GregCr 0:1ed39951ab7b 278 State = RX;
montagny 15:063aa5212203 279 debug_if( DEBUG_MESSAGE, "> OnRxDone : RSSI %d dBm : SNR %d dB \n\r",RssiValue, SnrValue );
GregCr 0:1ed39951ab7b 280 }
GregCr 0:1ed39951ab7b 281
GregCr 0:1ed39951ab7b 282 void OnTxTimeout( void )
GregCr 0:1ed39951ab7b 283 {
GregCr 0:1ed39951ab7b 284 Radio.Sleep( );
GregCr 0:1ed39951ab7b 285 State = TX_TIMEOUT;
GregCr 7:c1bbd6c56979 286 debug_if( DEBUG_MESSAGE, "> OnTxTimeout\n\r" );
GregCr 0:1ed39951ab7b 287 }
GregCr 0:1ed39951ab7b 288
GregCr 0:1ed39951ab7b 289 void OnRxTimeout( void )
GregCr 0:1ed39951ab7b 290 {
GregCr 0:1ed39951ab7b 291 Radio.Sleep( );
mluis 14:ab6eecd44b7a 292 Buffer[BufferSize] = 0;
GregCr 0:1ed39951ab7b 293 State = RX_TIMEOUT;
GregCr 7:c1bbd6c56979 294 debug_if( DEBUG_MESSAGE, "> OnRxTimeout\n\r" );
GregCr 0:1ed39951ab7b 295 }
GregCr 0:1ed39951ab7b 296
GregCr 0:1ed39951ab7b 297 void OnRxError( void )
GregCr 0:1ed39951ab7b 298 {
GregCr 0:1ed39951ab7b 299 Radio.Sleep( );
GregCr 0:1ed39951ab7b 300 State = RX_ERROR;
GregCr 7:c1bbd6c56979 301 debug_if( DEBUG_MESSAGE, "> OnRxError\n\r" );
GregCr 0:1ed39951ab7b 302 }