File content as of revision 12:e0677648aa14:

/*
 * This file contains a copy of the master content sx1276PingPong
 * with adaption for the SX1276Generic environment
 * (c) 2017 Helmut Tschemernjak
 * 30826 Garbsen (Hannover) Germany
 */

#include "mbed.h"
#include "PinMap.h"
#include "GenericPingPong.h"
#include "sx1276-mbed-hal.h"
#include "main.h"

#ifdef FEATURE_LORA

/* 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            RF_FREQUENCY_868_1  // Hz
#define TX_OUTPUT_POWER         14                  // 14 dBm

#if USE_MODEM_LORA == 1

#define LORA_BANDWIDTH          125000  // LoRa default, details in SX1276::BandwidthMap
#define LORA_SPREADING_FACTOR   LORA_SF7
#define LORA_CODINGRATE         LORA_ERROR_CODING_RATE_4_5

#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
#define BUFFER_SIZE         64        // Define the payload size here

/*
 *  Global variables declarations
 */
typedef enum {
    LOWPOWER = 0,
    TRAITEMENT,
    REPONSE
} AppStates_t;

volatile AppStates_t State = LOWPOWER;

/*!
 * Radio events function pointer
 */
static RadioEvents_t RadioEvents;

/*
 *  Global variables declarations
 */
SX1276Generic *Radio;


uint8_t SLV[] = { 'Z', 'Z'};
uint8_t MTR[] = { 'X','X'};
DigitalOut myled(LED1);
uint16_t BufferSize = BUFFER_SIZE;
uint8_t *Buffer;

DigitalOut *led3;


int SX1276PingPong()
{
#if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
    DigitalOut *led = new DigitalOut(LED2);
#elif defined(TARGET_NUCLEO_L073RZ) || defined(TARGET_DISCO_L072CZ_LRWAN1)
    DigitalOut *led = new DigitalOut(LED4);   // RX red
    led3 = new DigitalOut(LED3);  // TX blue
#else
    DigitalOut *led = new DigitalOut(LED1);
    led3 = led;
#endif

    Buffer = new  uint8_t[BUFFER_SIZE];
    *led3 = 1;

#ifdef B_L072Z_LRWAN1_LORA
    Radio = new SX1276Generic(NULL, MURATA_SX1276,
                              LORA_SPI_MOSI, LORA_SPI_MISO, LORA_SPI_SCLK, LORA_CS, LORA_RESET,
                              LORA_DIO0, LORA_DIO1, LORA_DIO2, LORA_DIO3, LORA_DIO4, LORA_DIO5,
                              LORA_ANT_RX, LORA_ANT_TX, LORA_ANT_BOOST, LORA_TCXO);
#else // RFM95
    Radio = new SX1276Generic(NULL, RFM95_SX1276,
                              LORA_SPI_MOSI, LORA_SPI_MISO, LORA_SPI_SCLK, LORA_CS, LORA_RESET,
                              LORA_DIO0, LORA_DIO1, LORA_DIO2, LORA_DIO3, LORA_DIO4, LORA_DIO5);

#endif

    uint8_t i;
    

    dprintf("SX1276 Ping Pong Demo Application" );
    dprintf("Freqency: %.1f", (double)RF_FREQUENCY/1000000.0);
    dprintf("TXPower: %d dBm",  TX_OUTPUT_POWER);
#if USE_MODEM_LORA == 1
    dprintf("Bandwidth: %d Hz", LORA_BANDWIDTH);
    dprintf("Spreading factor: SF%d", LORA_SPREADING_FACTOR);
#elif USE_MODEM_FSK == 1
    dprintf("Bandwidth: %d kHz",  FSK_BANDWIDTH);
    dprintf("Baudrate: %d", FSK_DATARATE);
#endif
    // Initialize Radio driver
    RadioEvents.TxDone = OnTxDone;
    RadioEvents.RxDone = OnRxDone;
    RadioEvents.RxError = OnRxError;
    RadioEvents.TxTimeout = OnTxTimeout;
    RadioEvents.RxTimeout = OnRxTimeout;
    if (Radio->Init( &RadioEvents ) == false) {
        while(1) {
            dprintf("Radio could not be detected!");
            wait( 1 );
        }
    }


    switch(Radio->DetectBoardType()) {
        case SX1276MB1LAS:
            if (DEBUG_MESSAGE)
                dprintf(" > Board Type: SX1276MB1LAS <");
            break;
        case SX1276MB1MAS:
            if (DEBUG_MESSAGE)
                dprintf(" > Board Type: SX1276MB1LAS <");
        case MURATA_SX1276:
            if (DEBUG_MESSAGE)
                dprintf(" > Board Type: MURATA_SX1276_STM32L0 <");
            break;
        case RFM95_SX1276:
            if (DEBUG_MESSAGE)
                dprintf(" > HopeRF RFM95xx <");
            break;
        default:
            dprintf(" > Board Type: unknown <");
    }

    Radio->SetChannel(RF_FREQUENCY );

#if USE_MODEM_LORA == 1

    if (LORA_FHSS_ENABLED)
        dprintf("             > LORA FHSS Mode <");
    if (!LORA_FHSS_ENABLED)
        dprintf("             > LORA Mode <");

    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

    dprintf("              > FSK Mode <");
    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

    if (DEBUG_MESSAGE)
        dprintf("Starting Ping-Pong loop");


    Radio->Rx( RX_TIMEOUT_VALUE );

    while( 1 ) {
#ifdef TARGET_STM32L4
        WatchDogUpdate();
#endif	
		//dprintf("%d",State);
        switch( State ) {
		
            case LOWPOWER:
                sleep();
                //dprintf("Escuchando\n\r");
                Radio->Rx( RX_TIMEOUT_VALUE );
                break;
            case TRAITEMENT:
            	Radio->Sleep( );
				 if( BufferSize > 0 ) {
				 	if(Buffer[0]==MTR[0] && Buffer[1]==MTR[1] && Buffer[2]==SLV[0] && Buffer[3]==SLV[1]){
				 		dprintf("Me pedieron informacion\n\r");
				 		*led3 = 0;
				 		myled=0;
				 		dump("Data:", Buffer, BufferSize);
				 		State=REPONSE;
				 		}
				 	else{
				 		State=LOWPOWER;
				 		myled=1;
				 		wait_ms( 20 );
				 	}
				 }
				 else{
				 		State=LOWPOWER;
				 	}
                break;
            case REPONSE:
				//Radio->Sleep( );
				
				Buffer[0]=SLV[0];
				Buffer[1]=SLV[1];
				Buffer[2]=MTR[0];
				Buffer[3]=MTR[1];
				for( i = 4; i < BufferSize; i++ ) {
                        Buffer[i] = 0x50;
                    }
                
                wait_ms( 20 );
                Radio->Send( Buffer, BufferSize );
                *led3 = 1;
                break;
            default:
                State = LOWPOWER;
                break;
        }
    }
}

void OnTxDone(void *radio, void *userThisPtr, void *userData)
{
    Radio->Sleep( );
    State = LOWPOWER;
    if (DEBUG_MESSAGE)
        dprintf("> OnTxDone");
}

void OnRxDone(void *radio, void *userThisPtr, void *userData, uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
{
    Radio->Sleep( );
    //BufferSize = size;
    memcpy( Buffer, payload, BufferSize );
    State = TRAITEMENT;
    if (DEBUG_MESSAGE)
        dprintf("> OnRxDone: RssiValue=%d dBm, SnrValue=%d", rssi, snr);
    //dump("Data:", payload, size);
}

void OnTxTimeout(void *radio, void *userThisPtr, void *userData)
{
    //*led3 = 0;
     Radio->Sleep( );
      State = LOWPOWER;
    if(DEBUG_MESSAGE)
        dprintf("> OnTxTimeout");
}

void OnRxTimeout(void *radio, void *userThisPtr, void *userData)
{
    //*led3 = 0;
    Radio->Sleep( );
    Buffer[BufferSize-1] = 0;
   State = LOWPOWER;
    if (DEBUG_MESSAGE)
        dprintf("> OnRxTimeout");
}

void OnRxError(void *radio, void *userThisPtr, void *userData)
{
    Radio->Sleep( );
    State = LOWPOWER;
    if (DEBUG_MESSAGE)
        dprintf("> OnRxError");
}

#endif