Radnoumane Mossabely
Peer to peer connection to switch on a led on slave
Diff: main.cpp
- Revision:
- 0:1392ebe3241b
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Mar 21 13:18:51 2018 +0000
@@ -0,0 +1,308 @@
+#include "mbed.h"
+#include "main.h"
+#include "sx1272-hal.h"
+#include "debug.h"
+
+/* Set this flag to '1' to display debug messages on the console */
+#define DEBUG_MESSAGE 1
+
+/* Set this flag to '1' to use the LoRa modulation or to '0' to use FSK modulation */
+#define USE_MODEM_LORA 1
+#define USE_MODEM_FSK !USE_MODEM_LORA
+
+#define RF_FREQUENCY 868000000 // Hz
+#define TX_OUTPUT_POWER 14 // 14 dBm
+
+#if USE_MODEM_LORA == 1
+
+#define LORA_BANDWIDTH 2 // [0: 125 kHz,
+// 1: 250 kHz,
+// 2: 500 kHz,
+// 3: Reserved]
+#define LORA_SPREADING_FACTOR 7 // [SF7..SF12]
+#define LORA_CODINGRATE 1 // [1: 4/5,
+// 2: 4/6,
+// 3: 4/7,
+// 4: 4/8]
+#define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
+#define LORA_SYMBOL_TIMEOUT 5 // Symbols
+#define LORA_FIX_LENGTH_PAYLOAD_ON false
+#define LORA_FHSS_ENABLED false
+#define LORA_NB_SYMB_HOP 4
+#define LORA_IQ_INVERSION_ON false
+#define LORA_CRC_ENABLED true
+
+#elif USE_MODEM_FSK == 1
+
+#define FSK_FDEV 25000 // Hz
+#define FSK_DATARATE 19200 // bps
+#define FSK_BANDWIDTH 50000 // Hz
+#define FSK_AFC_BANDWIDTH 83333 // Hz
+#define FSK_PREAMBLE_LENGTH 5 // Same for Tx and Rx
+#define FSK_FIX_LENGTH_PAYLOAD_ON false
+#define FSK_CRC_ENABLED true
+
+#else
+#error "Please define a modem in the compiler options."
+#endif
+
+#define RX_TIMEOUT_VALUE 3500 // in ms
+#define BUFFER_SIZE 32 // Define the payload size here
+
+#if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
+DigitalOut led( LED2 );
+#else
+DigitalOut led( LED1 );
+#endif
+
+/*
+ * Global variables declarations
+ */
+typedef enum {
+ LOWPOWER = 0,
+ IDLE,
+
+ RX,
+ RX_TIMEOUT,
+ RX_ERROR,
+
+ TX,
+ TX_TIMEOUT,
+
+ CAD,
+ CAD_DONE
+} AppStates_t;
+
+volatile AppStates_t State = RX;
+
+/*!
+ * Radio events function pointer
+ */
+static RadioEvents_t RadioEvents;
+
+/*
+ * Global variables declarations
+ */
+SX1272MB2xAS Radio( NULL );
+
+const uint8_t PingMsg[] = "PING";
+const uint8_t PongMsg[] = "PONG";
+const uint8_t Coucou[] = "Coucou";
+const uint8_t Loulou[] = "Loulou";
+
+uint16_t BufferSize = BUFFER_SIZE;
+uint8_t Buffer[BUFFER_SIZE];
+
+int16_t RssiValue = 0.0;
+int8_t SnrValue = 0.0;
+
+
+//lecture btn
+DigitalIn mybutton(USER_BUTTON);
+
+int main( void )
+{
+ uint8_t i;
+ bool isMaster = true;
+
+ debug( "\n\n\r SX1272 Ping Pong Demo Application \n\n\r" );
+
+ // Initialize Radio driver
+ RadioEvents.TxDone = OnTxDone;
+ RadioEvents.RxDone = OnRxDone;
+ RadioEvents.RxError = OnRxError;
+ RadioEvents.TxTimeout = OnTxTimeout;
+ RadioEvents.RxTimeout = OnRxTimeout;
+ Radio.Init( &RadioEvents );
+
+ // verify the connection with the board
+ while( Radio.Read( REG_VERSION ) == 0x00 ) {
+ debug( "Radio could not be detected!\n\r", NULL );
+ wait( 1 );
+ }
+
+ debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1272MB2XAS ) ), "\n\r > Board Type: SX1272MB2xAS < \n\r" );
+
+ Radio.SetChannel( RF_FREQUENCY );
+
+#if USE_MODEM_LORA == 1
+
+ debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r" );
+ debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r" );
+
+ Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
+ LORA_SPREADING_FACTOR, LORA_CODINGRATE,
+ LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
+ LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
+ LORA_IQ_INVERSION_ON, 2000 );
+
+ Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
+ LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
+ LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0,
+ LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
+ LORA_IQ_INVERSION_ON, true );
+
+#elif USE_MODEM_FSK == 1
+
+ debug("\n\n\r > FSK Mode < \n\n\r" );
+ Radio.SetTxConfig( MODEM_FSK, TX_OUTPUT_POWER, FSK_FDEV, 0,
+ FSK_DATARATE, 0,
+ FSK_PREAMBLE_LENGTH, FSK_FIX_LENGTH_PAYLOAD_ON,
+ FSK_CRC_ENABLED, 0, 0, 0, 2000 );
+
+ Radio.SetRxConfig( MODEM_FSK, FSK_BANDWIDTH, FSK_DATARATE,
+ 0, FSK_AFC_BANDWIDTH, FSK_PREAMBLE_LENGTH,
+ 0, FSK_FIX_LENGTH_PAYLOAD_ON, 0, FSK_CRC_ENABLED,
+ 0, 0, false, true );
+
+#else
+
+#error "Please define a modem in the compiler options."
+
+#endif
+
+ debug_if( DEBUG_MESSAGE, "Starting ON/OFF LED loop\r\n" );
+
+ led = 0;
+
+ Radio.Rx( RX_TIMEOUT_VALUE );
+
+ while( 1 ) {
+ switch( State ) {
+ case RX:
+ if( BufferSize > 0 ) {
+ if( strncmp( ( const char* )Buffer, ( const char* )Coucou, 6 ) == 0 ) {
+ debug("LED ON");
+ for(i=10;i<10;i++){
+ led = 1; // LED is ON
+ led = 0;
+ wait(0.2); // 200 ms
+ led = 0; // LED is OFF
+ led= 1;
+ wait(0.2); // 1 sec
+ }
+
+ // envoi de la réponse
+ strcpy( ( char* )Buffer, ( char* )Loulou );
+ // We fill the buffer with numbers for the payload
+ for( i = 6; i < BufferSize; i++ ) {
+ Buffer[i] = i - 6;
+ }
+ wait_ms( 10 );
+ Radio.Send( Buffer, BufferSize );
+ }
+ State = LOWPOWER;
+ break;
+ case TX:
+ debug("state = TX\r\n");
+ //led = !led;
+ Radio.Rx( RX_TIMEOUT_VALUE );
+ State = LOWPOWER;
+ break;
+ case RX_TIMEOUT:
+ debug("state = RX_TIMEOUT\r\n");
+ /* if( isMaster == true )
+ {
+ // Send the next PING frame
+ strcpy( ( char* )Buffer, ( char* )PingMsg );
+ for( i = 4; i < BufferSize; i++ )
+ {
+ Buffer[i] = i - 4;
+ }
+ wait_ms( 10 );
+ Radio.Send( Buffer, BufferSize );
+ }
+ else
+ {
+ Radio.Rx( RX_TIMEOUT_VALUE );
+ }*/
+ State = LOWPOWER;
+ break;
+ case RX_ERROR:
+ debug("state = RX_ERROR\r\n");
+ // We have received a Packet with a CRC error, send reply as if packet was correct
+ /* if( isMaster == true )
+ {
+ // Send the next PING frame
+ strcpy( ( char* )Buffer, ( char* )PingMsg );
+ for( i = 4; i < BufferSize; i++ )
+ {
+ Buffer[i] = i - 4;
+ }
+ wait_ms( 10 );
+ Radio.Send( Buffer, BufferSize );
+ }
+ else
+ {
+ // Send the next PONG frame
+ strcpy( ( char* )Buffer, ( char* )PongMsg );
+ for( i = 4; i < BufferSize; i++ )
+ {
+ Buffer[i] = i - 4;
+ }
+ wait_ms( 10 );
+ Radio.Send( Buffer, BufferSize );
+ }*/
+ State = LOWPOWER;
+ break;
+ case TX_TIMEOUT:
+ debug("state = TX_TIMEOUT\r\n");
+ Radio.Rx( RX_TIMEOUT_VALUE );
+ State = RX;
+ break;
+ case LOWPOWER:
+ // debug("state = LOWPOWER\r\n");
+ //State = RX;
+ break;
+ default:
+ debug("default\r\n");
+ State = RX;
+ break;
+ }
+
+
+ }
+
+
+
+}
+
+void OnTxDone( void )
+{
+ Radio.Sleep( );
+ State = TX;
+ debug_if( DEBUG_MESSAGE, "> Transmission terminee\n\r" );
+}
+
+void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
+{
+ Radio.Sleep( );
+ BufferSize = size;
+ memcpy( Buffer, payload, BufferSize );
+ RssiValue = rssi;
+ SnrValue = snr;
+ State = RX;
+ debug_if( DEBUG_MESSAGE, "> Reception terminee \n\r" );
+}
+
+void OnTxTimeout( void )
+{
+ Radio.Sleep( );
+ State = TX_TIMEOUT;
+ debug_if( DEBUG_MESSAGE, "> Transmission timeout\n\r" );
+}
+
+void OnRxTimeout( void )
+{
+ Radio.Sleep( );
+ Buffer[BufferSize] = 0;
+ State = RX_TIMEOUT;
+ debug_if( DEBUG_MESSAGE, "> Reception timeout\n\r" );
+}
+
+void OnRxError( void )
+{
+ Radio.Sleep( );
+ State = RX_ERROR;
+ debug_if( DEBUG_MESSAGE, "> Erreur de reception \n\r" );
+}