SensorTile Dreamers / Mbed 2 deprecated LoRa_Tx

LoRa Trasmissione

Dependencies:   SX1272Lib mbed

Fork of SX1272PingPong by Semtech

main.cpp@15:f48a416da6a8, 2017-07-21 (annotated)

Committer:
franc_unina
Date:
Fri Jul 21 19:44:45 2017 +0000
Revision:
15:f48a416da6a8
Parent:
14:ab6eecd44b7a 
LoRa_Tx

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 0:1ed39951ab7b 6 /* Set this flag to '1' to display debug messages on the console */
GregCr 13:edb9b443c1dd 7 #define DEBUG_MESSAGE 1
GregCr 0:1ed39951ab7b 8
GregCr 0:1ed39951ab7b 9 /* Set this flag to '1' to use the LoRa modulation or to '0' to use FSK modulation */
GregCr 5:f2431c4fe3bb 10 #define USE_MODEM_LORA 1
GregCr 0:1ed39951ab7b 11 #define USE_MODEM_FSK !USE_MODEM_LORA
GregCr 0:1ed39951ab7b 12
GregCr 5:f2431c4fe3bb 13 #define RF_FREQUENCY 868000000 // Hz
GregCr 0:1ed39951ab7b 14 #define TX_OUTPUT_POWER 14 // 14 dBm
GregCr 0:1ed39951ab7b 15
GregCr 0:1ed39951ab7b 16 #if USE_MODEM_LORA == 1
GregCr 0:1ed39951ab7b 17
GregCr 1:126d70d374f6 18 #define LORA_BANDWIDTH 2 // [0: 125 kHz,
GregCr 0:1ed39951ab7b 19 // 1: 250 kHz,
GregCr 0:1ed39951ab7b 20 // 2: 500 kHz,
GregCr 0:1ed39951ab7b 21 // 3: Reserved]
GregCr 0:1ed39951ab7b 22 #define LORA_SPREADING_FACTOR 7 // [SF7..SF12]
GregCr 0:1ed39951ab7b 23 #define LORA_CODINGRATE 1 // [1: 4/5,
GregCr 0:1ed39951ab7b 24 // 2: 4/6,
GregCr 0:1ed39951ab7b 25 // 3: 4/7,
GregCr 0:1ed39951ab7b 26 // 4: 4/8]
GregCr 0:1ed39951ab7b 27 #define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
GregCr 0:1ed39951ab7b 28 #define LORA_SYMBOL_TIMEOUT 5 // Symbols
GregCr 0:1ed39951ab7b 29 #define LORA_FIX_LENGTH_PAYLOAD_ON false
GregCr 3:8b9e2a4df4b5 30 #define LORA_FHSS_ENABLED false
GregCr 3:8b9e2a4df4b5 31 #define LORA_NB_SYMB_HOP 4
GregCr 0:1ed39951ab7b 32 #define LORA_IQ_INVERSION_ON false
GregCr 3:8b9e2a4df4b5 33 #define LORA_CRC_ENABLED true
mluis 14:ab6eecd44b7a 34
GregCr 0:1ed39951ab7b 35 #elif USE_MODEM_FSK == 1
GregCr 0:1ed39951ab7b 36
GregCr 2:59e108728d71 37 #define FSK_FDEV 25000 // Hz
GregCr 2:59e108728d71 38 #define FSK_DATARATE 19200 // bps
GregCr 2:59e108728d71 39 #define FSK_BANDWIDTH 50000 // Hz
GregCr 2:59e108728d71 40 #define FSK_AFC_BANDWIDTH 83333 // Hz
GregCr 0:1ed39951ab7b 41 #define FSK_PREAMBLE_LENGTH 5 // Same for Tx and Rx
GregCr 0:1ed39951ab7b 42 #define FSK_FIX_LENGTH_PAYLOAD_ON false
GregCr 3:8b9e2a4df4b5 43 #define FSK_CRC_ENABLED true
mluis 14:ab6eecd44b7a 44
GregCr 0:1ed39951ab7b 45 #else
GregCr 0:1ed39951ab7b 46 #error "Please define a modem in the compiler options."
GregCr 0:1ed39951ab7b 47 #endif
GregCr 0:1ed39951ab7b 48
mluis 14:ab6eecd44b7a 49 #define RX_TIMEOUT_VALUE 3500 // in ms
GregCr 0:1ed39951ab7b 50 #define BUFFER_SIZE 32 // Define the payload size here
GregCr 0:1ed39951ab7b 51
GregCr 8:f956dee63a56 52 #if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
mluis 14:ab6eecd44b7a 53 DigitalOut led( LED2 );
GregCr 3:8b9e2a4df4b5 54 #else
mluis 14:ab6eecd44b7a 55 DigitalOut led( LED1 );
GregCr 3:8b9e2a4df4b5 56 #endif
GregCr 3:8b9e2a4df4b5 57
GregCr 0:1ed39951ab7b 58 /*
GregCr 0:1ed39951ab7b 59 * Global variables declarations
GregCr 0:1ed39951ab7b 60 */
mluis 10:7af820d1e1df 61 typedef enum
mluis 10:7af820d1e1df 62 {
mluis 10:7af820d1e1df 63 LOWPOWER = 0,
mluis 10:7af820d1e1df 64 IDLE,
mluis 14:ab6eecd44b7a 65
mluis 10:7af820d1e1df 66 RX,
mluis 10:7af820d1e1df 67 RX_TIMEOUT,
mluis 10:7af820d1e1df 68 RX_ERROR,
mluis 14:ab6eecd44b7a 69
mluis 10:7af820d1e1df 70 TX,
mluis 10:7af820d1e1df 71 TX_TIMEOUT,
mluis 14:ab6eecd44b7a 72
mluis 10:7af820d1e1df 73 CAD,
mluis 10:7af820d1e1df 74 CAD_DONE
mluis 10:7af820d1e1df 75 }AppStates_t;
GregCr 0:1ed39951ab7b 76
mluis 10:7af820d1e1df 77 volatile AppStates_t State = LOWPOWER;
mluis 10:7af820d1e1df 78
mluis 10:7af820d1e1df 79 /*!
mluis 10:7af820d1e1df 80 * Radio events function pointer
mluis 10:7af820d1e1df 81 */
mluis 10:7af820d1e1df 82 static RadioEvents_t RadioEvents;
mluis 10:7af820d1e1df 83
mluis 10:7af820d1e1df 84 /*
mluis 10:7af820d1e1df 85 * Global variables declarations
mluis 10:7af820d1e1df 86 */
GregCr 13:edb9b443c1dd 87 SX1272MB2xAS Radio( NULL );
GregCr 0:1ed39951ab7b 88
franc_unina 15:f48a416da6a8 89 const uint8_t PingMsg[] = "LOR1";
franc_unina 15:f48a416da6a8 90 const uint8_t PongMs2[] = "LOR2";
franc_unina 15:f48a416da6a8 91 const uint8_t PongMs3[] = "LOR3";
GregCr 0:1ed39951ab7b 92
GregCr 0:1ed39951ab7b 93 uint16_t BufferSize = BUFFER_SIZE;
GregCr 0:1ed39951ab7b 94 uint8_t Buffer[BUFFER_SIZE];
GregCr 0:1ed39951ab7b 95
GregCr 5:f2431c4fe3bb 96 int16_t RssiValue = 0.0;
GregCr 5:f2431c4fe3bb 97 int8_t SnrValue = 0.0;
GregCr 0:1ed39951ab7b 98
mluis 14:ab6eecd44b7a 99 int main( void )
GregCr 0:1ed39951ab7b 100 {
GregCr 0:1ed39951ab7b 101 uint8_t i;
franc_unina 15:f48a416da6a8 102
mluis 14:ab6eecd44b7a 103
GregCr 13:edb9b443c1dd 104 debug( "\n\n\r SX1272 Ping Pong Demo Application \n\n\r" );
mluis 10:7af820d1e1df 105
mluis 10:7af820d1e1df 106 // Initialize Radio driver
mluis 10:7af820d1e1df 107 RadioEvents.TxDone = OnTxDone;
mluis 10:7af820d1e1df 108 RadioEvents.RxDone = OnRxDone;
mluis 10:7af820d1e1df 109 RadioEvents.RxError = OnRxError;
mluis 10:7af820d1e1df 110 RadioEvents.TxTimeout = OnTxTimeout;
mluis 10:7af820d1e1df 111 RadioEvents.RxTimeout = OnRxTimeout;
mluis 10:7af820d1e1df 112 Radio.Init( &RadioEvents );
mluis 14:ab6eecd44b7a 113
GregCr 7:c1bbd6c56979 114 // verify the connection with the board
GregCr 7:c1bbd6c56979 115 while( Radio.Read( REG_VERSION ) == 0x00 )
GregCr 2:59e108728d71 116 {
GregCr 7:c1bbd6c56979 117 debug( "Radio could not be detected!\n\r", NULL );
GregCr 7:c1bbd6c56979 118 wait( 1 );
GregCr 2:59e108728d71 119 }
mluis 14:ab6eecd44b7a 120
mluis 14:ab6eecd44b7a 121 debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1272MB2XAS ) ), "\n\r > Board Type: SX1272MB2xAS < \n\r" );
mluis 14:ab6eecd44b7a 122
GregCr 0:1ed39951ab7b 123 Radio.SetChannel( RF_FREQUENCY );
GregCr 0:1ed39951ab7b 124
GregCr 0:1ed39951ab7b 125 #if USE_MODEM_LORA == 1
mluis 14:ab6eecd44b7a 126
mluis 14:ab6eecd44b7a 127 debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r" );
mluis 14:ab6eecd44b7a 128 debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r" );
GregCr 7:c1bbd6c56979 129
GregCr 0:1ed39951ab7b 130 Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
GregCr 0:1ed39951ab7b 131 LORA_SPREADING_FACTOR, LORA_CODINGRATE,
GregCr 0:1ed39951ab7b 132 LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
mluis 14:ab6eecd44b7a 133 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
mluis 14:ab6eecd44b7a 134 LORA_IQ_INVERSION_ON, 2000 );
mluis 14:ab6eecd44b7a 135
GregCr 0:1ed39951ab7b 136 Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
GregCr 0:1ed39951ab7b 137 LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
mluis 9:e764990e45df 138 LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0,
mluis 14:ab6eecd44b7a 139 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
GregCr 3:8b9e2a4df4b5 140 LORA_IQ_INVERSION_ON, true );
mluis 14:ab6eecd44b7a 141
GregCr 0:1ed39951ab7b 142 #elif USE_MODEM_FSK == 1
GregCr 0:1ed39951ab7b 143
mluis 14:ab6eecd44b7a 144 debug("\n\n\r > FSK Mode < \n\n\r" );
GregCr 0:1ed39951ab7b 145 Radio.SetTxConfig( MODEM_FSK, TX_OUTPUT_POWER, FSK_FDEV, 0,
GregCr 0:1ed39951ab7b 146 FSK_DATARATE, 0,
GregCr 0:1ed39951ab7b 147 FSK_PREAMBLE_LENGTH, FSK_FIX_LENGTH_PAYLOAD_ON,
mluis 14:ab6eecd44b7a 148 FSK_CRC_ENABLED, 0, 0, 0, 2000 );
mluis 14:ab6eecd44b7a 149
GregCr 0:1ed39951ab7b 150 Radio.SetRxConfig( MODEM_FSK, FSK_BANDWIDTH, FSK_DATARATE,
GregCr 0:1ed39951ab7b 151 0, FSK_AFC_BANDWIDTH, FSK_PREAMBLE_LENGTH,
mluis 9:e764990e45df 152 0, FSK_FIX_LENGTH_PAYLOAD_ON, 0, FSK_CRC_ENABLED,
GregCr 3:8b9e2a4df4b5 153 0, 0, false, true );
mluis 14:ab6eecd44b7a 154
GregCr 0:1ed39951ab7b 155 #else
GregCr 0:1ed39951ab7b 156
GregCr 0:1ed39951ab7b 157 #error "Please define a modem in the compiler options."
GregCr 0:1ed39951ab7b 158
GregCr 0:1ed39951ab7b 159 #endif
mluis 14:ab6eecd44b7a 160
mluis 14:ab6eecd44b7a 161 debug_if( DEBUG_MESSAGE, "Starting Ping-Pong loop\r\n" );
mluis 14:ab6eecd44b7a 162
GregCr 3:8b9e2a4df4b5 163 led = 0;
mluis 14:ab6eecd44b7a 164
franc_unina 15:f48a416da6a8 165 //Radio.Rx( RX_TIMEOUT_VALUE );
mluis 14:ab6eecd44b7a 166
GregCr 0:1ed39951ab7b 167 while( 1 )
GregCr 0:1ed39951ab7b 168 {
franc_unina 15:f48a416da6a8 169
mluis 14:ab6eecd44b7a 170 led = !led;
franc_unina 15:f48a416da6a8 171
franc_unina 15:f48a416da6a8 172 debug( "LOR1...\r\n" );
franc_unina 15:f48a416da6a8 173
GregCr 7:c1bbd6c56979 174 strcpy( ( char* )Buffer, ( char* )PingMsg );
GregCr 0:1ed39951ab7b 175 for( i = 4; i < BufferSize; i++ )
GregCr 0:1ed39951ab7b 176 {
GregCr 0:1ed39951ab7b 177 Buffer[i] = i - 4;
GregCr 0:1ed39951ab7b 178 }
franc_unina 15:f48a416da6a8 179 wait_ms( 1000 );
GregCr 0:1ed39951ab7b 180 Radio.Send( Buffer, BufferSize );
franc_unina 15:f48a416da6a8 181
GregCr 0:1ed39951ab7b 182 }
GregCr 0:1ed39951ab7b 183 }
GregCr 0:1ed39951ab7b 184
GregCr 0:1ed39951ab7b 185 void OnTxDone( void )
GregCr 0:1ed39951ab7b 186 {
GregCr 5:f2431c4fe3bb 187 Radio.Sleep( );
GregCr 0:1ed39951ab7b 188 State = TX;
GregCr 7:c1bbd6c56979 189 debug_if( DEBUG_MESSAGE, "> OnTxDone\n\r" );
GregCr 0:1ed39951ab7b 190 }
GregCr 0:1ed39951ab7b 191
mluis 14:ab6eecd44b7a 192 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
GregCr 0:1ed39951ab7b 193 {
franc_unina 15:f48a416da6a8 194
GregCr 0:1ed39951ab7b 195 Radio.Sleep( );
GregCr 0:1ed39951ab7b 196 BufferSize = size;
GregCr 0:1ed39951ab7b 197 memcpy( Buffer, payload, BufferSize );
GregCr 0:1ed39951ab7b 198 RssiValue = rssi;
GregCr 0:1ed39951ab7b 199 SnrValue = snr;
GregCr 0:1ed39951ab7b 200 State = RX;
GregCr 7:c1bbd6c56979 201 debug_if( DEBUG_MESSAGE, "> OnRxDone\n\r" );
franc_unina 15:f48a416da6a8 202
GregCr 0:1ed39951ab7b 203 }
GregCr 0:1ed39951ab7b 204
GregCr 0:1ed39951ab7b 205 void OnTxTimeout( void )
GregCr 0:1ed39951ab7b 206 {
GregCr 0:1ed39951ab7b 207 Radio.Sleep( );
GregCr 0:1ed39951ab7b 208 State = TX_TIMEOUT;
GregCr 7:c1bbd6c56979 209 debug_if( DEBUG_MESSAGE, "> OnTxTimeout\n\r" );
GregCr 0:1ed39951ab7b 210 }
GregCr 0:1ed39951ab7b 211
GregCr 0:1ed39951ab7b 212 void OnRxTimeout( void )
GregCr 0:1ed39951ab7b 213 {
franc_unina 15:f48a416da6a8 214
GregCr 0:1ed39951ab7b 215 Radio.Sleep( );
mluis 14:ab6eecd44b7a 216 Buffer[BufferSize] = 0;
GregCr 0:1ed39951ab7b 217 State = RX_TIMEOUT;
GregCr 7:c1bbd6c56979 218 debug_if( DEBUG_MESSAGE, "> OnRxTimeout\n\r" );
franc_unina 15:f48a416da6a8 219
GregCr 0:1ed39951ab7b 220 }
GregCr 0:1ed39951ab7b 221
GregCr 0:1ed39951ab7b 222 void OnRxError( void )
GregCr 0:1ed39951ab7b 223 {
franc_unina 15:f48a416da6a8 224
GregCr 0:1ed39951ab7b 225 Radio.Sleep( );
GregCr 0:1ed39951ab7b 226 State = RX_ERROR;
GregCr 7:c1bbd6c56979 227 debug_if( DEBUG_MESSAGE, "> OnRxError\n\r" );
franc_unina 15:f48a416da6a8 228
GregCr 0:1ed39951ab7b 229 }