Antoine Boisadam / Mbed 2 deprecated SX1272-Receiver

Fork of the Simple Ping-Pong demo application between two SX1272MB2xAs demo board. It's now a simple application demonstrating simple Rx (Receive) from a SX1272 boards.

Dependencies:   SX1272Lib mbed

Fork of SX1272PingPong by Semtech

main.cpp@15:dc867bef95d9, 2017-03-13 (annotated)

Committer:
Antoine38
Date:
Mon Mar 13 09:54:09 2017 +0000
Revision:
15:dc867bef95d9
Parent:
14:6c312f8635fe
Child:
17:c44bd9aea979
On affiche dor?navant le contenu du buffer ? chaque reception

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
Antoine38 14:6c312f8635fe 10 #define RF_FREQUENCY 868000000 // Hz
GregCr 0:1ed39951ab7b 11
Antoine38 14:6c312f8635fe 12 #define LORA_BANDWIDTH 2 // [0: 125 kHz,
Antoine38 15:dc867bef95d9 13 // 1: 250 kHz,
Antoine38 15:dc867bef95d9 14 // 2: 500 kHz,
Antoine38 15:dc867bef95d9 15 // 3: Reserved]
Antoine38 15:dc867bef95d9 16
Antoine38 14:6c312f8635fe 17 #define LORA_SPREADING_FACTOR 7 // [SF7..SF12]
Antoine38 14:6c312f8635fe 18 #define LORA_CODINGRATE 1 // [1: 4/5,
Antoine38 15:dc867bef95d9 19 // 2: 4/6,
Antoine38 15:dc867bef95d9 20 // 3: 4/7,
Antoine38 15:dc867bef95d9 21 // 4: 4/8]
Antoine38 15:dc867bef95d9 22
Antoine38 15:dc867bef95d9 23 #define LORA_PREAMBLE_LENGTH 8
Antoine38 14:6c312f8635fe 24 #define LORA_SYMBOL_TIMEOUT 5 // Symbols
Antoine38 14:6c312f8635fe 25 #define LORA_FIX_LENGTH_PAYLOAD_ON false
Antoine38 14:6c312f8635fe 26 #define LORA_FHSS_ENABLED false
Antoine38 14:6c312f8635fe 27 #define LORA_NB_SYMB_HOP 4
Antoine38 14:6c312f8635fe 28 #define LORA_IQ_INVERSION_ON false
Antoine38 14:6c312f8635fe 29 #define LORA_CRC_ENABLED true
GregCr 0:1ed39951ab7b 30
Antoine38 14:6c312f8635fe 31 #define RX_TIMEOUT_VALUE 3500000 // in us
Antoine38 14:6c312f8635fe 32 #define BUFFER_SIZE 32 // Define the payload size here
GregCr 0:1ed39951ab7b 33
GregCr 3:8b9e2a4df4b5 34 DigitalOut led(LED1);
GregCr 3:8b9e2a4df4b5 35
GregCr 0:1ed39951ab7b 36 /*
GregCr 0:1ed39951ab7b 37 * Global variables declarations
GregCr 0:1ed39951ab7b 38 */
Antoine38 14:6c312f8635fe 39 typedef enum {
mluis 10:7af820d1e1df 40 LOWPOWER = 0,
mluis 10:7af820d1e1df 41 IDLE,
Antoine38 14:6c312f8635fe 42
mluis 10:7af820d1e1df 43 RX,
mluis 10:7af820d1e1df 44 RX_TIMEOUT,
mluis 10:7af820d1e1df 45 RX_ERROR,
Antoine38 14:6c312f8635fe 46
mluis 10:7af820d1e1df 47 CAD,
mluis 10:7af820d1e1df 48 CAD_DONE
Antoine38 14:6c312f8635fe 49 } AppStates_t;
GregCr 0:1ed39951ab7b 50
mluis 10:7af820d1e1df 51 volatile AppStates_t State = LOWPOWER;
mluis 10:7af820d1e1df 52
mluis 10:7af820d1e1df 53 /*!
mluis 10:7af820d1e1df 54 * Radio events function pointer
mluis 10:7af820d1e1df 55 */
mluis 10:7af820d1e1df 56 static RadioEvents_t RadioEvents;
mluis 10:7af820d1e1df 57
mluis 10:7af820d1e1df 58 /*
mluis 10:7af820d1e1df 59 * Global variables declarations
mluis 10:7af820d1e1df 60 */
GregCr 13:edb9b443c1dd 61 SX1272MB2xAS Radio( NULL );
GregCr 0:1ed39951ab7b 62
GregCr 0:1ed39951ab7b 63 uint16_t BufferSize = BUFFER_SIZE;
GregCr 0:1ed39951ab7b 64 uint8_t Buffer[BUFFER_SIZE];
GregCr 0:1ed39951ab7b 65
GregCr 5:f2431c4fe3bb 66 int16_t RssiValue = 0.0;
GregCr 5:f2431c4fe3bb 67 int8_t SnrValue = 0.0;
GregCr 0:1ed39951ab7b 68
Antoine38 14:6c312f8635fe 69 int main()
GregCr 0:1ed39951ab7b 70 {
GregCr 0:1ed39951ab7b 71 uint8_t i;
Antoine38 14:6c312f8635fe 72
Antoine38 14:6c312f8635fe 73 debug( "\n\n\r iGreenhouse Application \n\n\r" );
mluis 10:7af820d1e1df 74
mluis 10:7af820d1e1df 75 // Initialize Radio driver
mluis 10:7af820d1e1df 76 RadioEvents.RxDone = OnRxDone;
mluis 10:7af820d1e1df 77 RadioEvents.RxError = OnRxError;
mluis 10:7af820d1e1df 78 RadioEvents.RxTimeout = OnRxTimeout;
mluis 10:7af820d1e1df 79 Radio.Init( &RadioEvents );
Antoine38 14:6c312f8635fe 80
GregCr 7:c1bbd6c56979 81 // verify the connection with the board
Antoine38 14:6c312f8635fe 82 while( Radio.Read( REG_VERSION ) == 0x00 ) {
GregCr 7:c1bbd6c56979 83 debug( "Radio could not be detected!\n\r", NULL );
GregCr 7:c1bbd6c56979 84 wait( 1 );
GregCr 2:59e108728d71 85 }
Antoine38 14:6c312f8635fe 86
GregCr 13:edb9b443c1dd 87 debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1272MB2XAS ) ) , "\n\r > Board Type: SX1272MB2xAS < \n\r" );
GregCr 0:1ed39951ab7b 88
Antoine38 14:6c312f8635fe 89 Radio.SetChannel( RF_FREQUENCY );
Antoine38 14:6c312f8635fe 90
Antoine38 14:6c312f8635fe 91
GregCr 7:c1bbd6c56979 92 debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r");
GregCr 7:c1bbd6c56979 93 debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r");
GregCr 7:c1bbd6c56979 94
Antoine38 14:6c312f8635fe 95 Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
Antoine38 14:6c312f8635fe 96 LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
Antoine38 14:6c312f8635fe 97 LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0,
Antoine38 14:6c312f8635fe 98 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
Antoine38 14:6c312f8635fe 99 LORA_IQ_INVERSION_ON, true );
GregCr 0:1ed39951ab7b 100
Antoine38 14:6c312f8635fe 101
Antoine38 14:6c312f8635fe 102 debug_if( DEBUG_MESSAGE, "Starting listening loop\r\n" );
GregCr 0:1ed39951ab7b 103
GregCr 3:8b9e2a4df4b5 104 led = 0;
Antoine38 14:6c312f8635fe 105
GregCr 0:1ed39951ab7b 106 Radio.Rx( RX_TIMEOUT_VALUE );
Antoine38 14:6c312f8635fe 107
Antoine38 14:6c312f8635fe 108 while( 1 ) {
Antoine38 14:6c312f8635fe 109 switch( State ) {
Antoine38 14:6c312f8635fe 110 case RX:
Antoine38 15:dc867bef95d9 111 if( BufferSize > 0 ) {
Antoine38 15:dc867bef95d9 112 debug("\r\n========\r\nNew Packet\r\n========\r\n");
Antoine38 15:dc867bef95d9 113 debug("%s \r\n", Buffer);
Antoine38 15:dc867bef95d9 114 /*if( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 ) {
Antoine38 15:dc867bef95d9 115 led = !led;
Antoine38 15:dc867bef95d9 116 debug( "...Ping\r\n" );
Antoine38 15:dc867bef95d9 117 } else { // valid reception but not a PING as expected, let start again
Antoine38 15:dc867bef95d9 118 Radio.Rx( RX_TIMEOUT_VALUE );
Antoine38 15:dc867bef95d9 119 }*/
Antoine38 15:dc867bef95d9 120 }
Antoine38 14:6c312f8635fe 121 State = LOWPOWER;
Antoine38 14:6c312f8635fe 122 break;
Antoine38 15:dc867bef95d9 123 case RX_TIMEOUT:
Antoine38 14:6c312f8635fe 124 Radio.Rx( RX_TIMEOUT_VALUE );
Antoine38 14:6c312f8635fe 125 State = LOWPOWER;
Antoine38 14:6c312f8635fe 126 break;
Antoine38 14:6c312f8635fe 127 case RX_ERROR:
Antoine38 15:dc867bef95d9 128 // We have received a Packet with a CRC error
Antoine38 14:6c312f8635fe 129 State = LOWPOWER;
Antoine38 14:6c312f8635fe 130 break;
Antoine38 14:6c312f8635fe 131 case LOWPOWER:
Antoine38 14:6c312f8635fe 132 break;
Antoine38 14:6c312f8635fe 133 default:
Antoine38 14:6c312f8635fe 134 State = LOWPOWER;
Antoine38 14:6c312f8635fe 135 break;
Antoine38 14:6c312f8635fe 136 }
GregCr 0:1ed39951ab7b 137 }
GregCr 0:1ed39951ab7b 138 }
GregCr 0:1ed39951ab7b 139
GregCr 4:5ece30264cd9 140 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
GregCr 0:1ed39951ab7b 141 {
GregCr 0:1ed39951ab7b 142 Radio.Sleep( );
GregCr 0:1ed39951ab7b 143 BufferSize = size;
GregCr 0:1ed39951ab7b 144 memcpy( Buffer, payload, BufferSize );
GregCr 0:1ed39951ab7b 145 RssiValue = rssi;
GregCr 0:1ed39951ab7b 146 SnrValue = snr;
GregCr 0:1ed39951ab7b 147 State = RX;
GregCr 7:c1bbd6c56979 148 debug_if( DEBUG_MESSAGE, "> OnRxDone\n\r" );
GregCr 0:1ed39951ab7b 149 }
GregCr 0:1ed39951ab7b 150
GregCr 0:1ed39951ab7b 151 void OnRxTimeout( void )
GregCr 0:1ed39951ab7b 152 {
GregCr 0:1ed39951ab7b 153 Radio.Sleep( );
GregCr 1:126d70d374f6 154 Buffer[ BufferSize ] = 0;
GregCr 0:1ed39951ab7b 155 State = RX_TIMEOUT;
GregCr 7:c1bbd6c56979 156 debug_if( DEBUG_MESSAGE, "> OnRxTimeout\n\r" );
GregCr 0:1ed39951ab7b 157 }
GregCr 0:1ed39951ab7b 158
GregCr 0:1ed39951ab7b 159 void OnRxError( void )
GregCr 0:1ed39951ab7b 160 {
GregCr 0:1ed39951ab7b 161 Radio.Sleep( );
GregCr 0:1ed39951ab7b 162 State = RX_ERROR;
GregCr 7:c1bbd6c56979 163 debug_if( DEBUG_MESSAGE, "> OnRxError\n\r" );
GregCr 0:1ed39951ab7b 164 }
GregCr 3:8b9e2a4df4b5 165