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@18:79e1a9635c6d, 2017-03-13 (annotated)

Committer:
Antoine38
Date:
Mon Mar 13 14:35:32 2017 +0000
Revision:
18:79e1a9635c6d
Parent:
17:c44bd9aea979
Child:
19:538e05373d0f
Led blinking

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
mluis 10:7af820d1e1df 36 /*!
mluis 10:7af820d1e1df 37 * Radio events function pointer
mluis 10:7af820d1e1df 38 */
mluis 10:7af820d1e1df 39 static RadioEvents_t RadioEvents;
mluis 10:7af820d1e1df 40
mluis 10:7af820d1e1df 41 /*
mluis 10:7af820d1e1df 42 * Global variables declarations
mluis 10:7af820d1e1df 43 */
GregCr 13:edb9b443c1dd 44 SX1272MB2xAS Radio( NULL );
GregCr 0:1ed39951ab7b 45
GregCr 0:1ed39951ab7b 46 uint16_t BufferSize = BUFFER_SIZE;
GregCr 0:1ed39951ab7b 47 uint8_t Buffer[BUFFER_SIZE];
GregCr 0:1ed39951ab7b 48
GregCr 5:f2431c4fe3bb 49 int16_t RssiValue = 0.0;
GregCr 5:f2431c4fe3bb 50 int8_t SnrValue = 0.0;
GregCr 0:1ed39951ab7b 51
Antoine38 14:6c312f8635fe 52 int main()
GregCr 0:1ed39951ab7b 53 {
Antoine38 17:c44bd9aea979 54 debug( "\n\n\r iGreenhouse Application - Receiver \n\n\r" );
mluis 10:7af820d1e1df 55
mluis 10:7af820d1e1df 56 // Initialize Radio driver
mluis 10:7af820d1e1df 57 RadioEvents.RxDone = OnRxDone;
mluis 10:7af820d1e1df 58 RadioEvents.RxError = OnRxError;
mluis 10:7af820d1e1df 59 RadioEvents.RxTimeout = OnRxTimeout;
mluis 10:7af820d1e1df 60 Radio.Init( &RadioEvents );
Antoine38 14:6c312f8635fe 61
GregCr 7:c1bbd6c56979 62 // verify the connection with the board
Antoine38 14:6c312f8635fe 63 while( Radio.Read( REG_VERSION ) == 0x00 ) {
GregCr 7:c1bbd6c56979 64 debug( "Radio could not be detected!\n\r", NULL );
GregCr 7:c1bbd6c56979 65 wait( 1 );
GregCr 2:59e108728d71 66 }
Antoine38 14:6c312f8635fe 67
GregCr 13:edb9b443c1dd 68 debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1272MB2XAS ) ) , "\n\r > Board Type: SX1272MB2xAS < \n\r" );
GregCr 0:1ed39951ab7b 69
Antoine38 14:6c312f8635fe 70 Radio.SetChannel( RF_FREQUENCY );
Antoine38 14:6c312f8635fe 71
Antoine38 14:6c312f8635fe 72
GregCr 7:c1bbd6c56979 73 debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r");
GregCr 7:c1bbd6c56979 74 debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r");
GregCr 7:c1bbd6c56979 75
Antoine38 14:6c312f8635fe 76 Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
Antoine38 14:6c312f8635fe 77 LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
Antoine38 14:6c312f8635fe 78 LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0,
Antoine38 14:6c312f8635fe 79 LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
Antoine38 14:6c312f8635fe 80 LORA_IQ_INVERSION_ON, true );
GregCr 0:1ed39951ab7b 81
Antoine38 14:6c312f8635fe 82
Antoine38 14:6c312f8635fe 83 debug_if( DEBUG_MESSAGE, "Starting listening loop\r\n" );
GregCr 0:1ed39951ab7b 84
GregCr 3:8b9e2a4df4b5 85 led = 0;
Antoine38 14:6c312f8635fe 86
GregCr 0:1ed39951ab7b 87 Radio.Rx( RX_TIMEOUT_VALUE );
Antoine38 14:6c312f8635fe 88
Antoine38 14:6c312f8635fe 89 while( 1 ) {
Antoine38 17:c44bd9aea979 90 debug("\r\n========\r\nNew Packet\r\n========\r\n");
Antoine38 17:c44bd9aea979 91 debug("%s \r\n", Buffer);
Antoine38 18:79e1a9635c6d 92 led = 1-led;
Antoine38 17:c44bd9aea979 93 wait(3);
GregCr 0:1ed39951ab7b 94 }
GregCr 0:1ed39951ab7b 95 }
GregCr 0:1ed39951ab7b 96
GregCr 4:5ece30264cd9 97 void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
GregCr 0:1ed39951ab7b 98 {
GregCr 0:1ed39951ab7b 99 Radio.Sleep( );
GregCr 0:1ed39951ab7b 100 BufferSize = size;
GregCr 0:1ed39951ab7b 101 memcpy( Buffer, payload, BufferSize );
GregCr 0:1ed39951ab7b 102 RssiValue = rssi;
GregCr 0:1ed39951ab7b 103 SnrValue = snr;
GregCr 7:c1bbd6c56979 104 debug_if( DEBUG_MESSAGE, "> OnRxDone\n\r" );
GregCr 0:1ed39951ab7b 105 }
GregCr 0:1ed39951ab7b 106
GregCr 0:1ed39951ab7b 107 void OnRxTimeout( void )
GregCr 0:1ed39951ab7b 108 {
GregCr 0:1ed39951ab7b 109 Radio.Sleep( );
GregCr 1:126d70d374f6 110 Buffer[ BufferSize ] = 0;
GregCr 7:c1bbd6c56979 111 debug_if( DEBUG_MESSAGE, "> OnRxTimeout\n\r" );
GregCr 0:1ed39951ab7b 112 }
GregCr 0:1ed39951ab7b 113
GregCr 0:1ed39951ab7b 114 void OnRxError( void )
GregCr 0:1ed39951ab7b 115 {
GregCr 0:1ed39951ab7b 116 Radio.Sleep( );
GregCr 7:c1bbd6c56979 117 debug_if( DEBUG_MESSAGE, "> OnRxError\n\r" );
GregCr 0:1ed39951ab7b 118 }
GregCr 3:8b9e2a4df4b5 119