encoder.cpp

#include <stdlib.h>
#include <stdio.h>
#include <wiringPi.h>
#include <wiringPiSPI.h>

/*
const int MOSI_PIN = 12;        //from RASPI to FPGA
const int MISO_PIN = 13;        //from RASPI to FPGA
const int MOSI_PIN_FPGA = 14;   //from RASPI to FPGA
const int MISO_PIN_FPGA = 16;   //from RASPI to FPGA
const int VDD_PIN_FPGA = 29;    //from FPGA to ENCODER  -> ouput data from encoder
const int ENC_PIN_1A = 38;      //from FPGA to ENCODER  -> ouput data from encoder
const int ENC_PIN_1B = 36;      //from FPGA to ENCODER  -> ouput data from encoder
const int ENC_PIN_2A = 35;      //from FPGA to ENCODER  -> ouput data from encoder
const int ENC_PIN_2B = 34;      //from FPGA to ENCODER  -> ouput data from encoder
const int SCK_PIN = 14;         //from RASPI to FPGA    -> clock signal
const int SCK_PIN_FPGA = 13;    //from FPGA to ENCODER  -> clock signal 
const int SS_PIN_2 = 11;         //CE1 from RASPI to FPGA    -> enable encoder
const int CE1_PIN_FPGA = 15;
*/

unsigned char rawData[32];
const int len = 32;
const int CHANNEL_DEO = 1;

int main(int argc, char const *argv[])
{   
    int result, fd;
    for (int i = 0; i<32; i++){ 
        rawData[i] = 0x01;}

    if (wiringPiSetup() == -1) {
        printf("WiringPiSetup failed\n");
        exit(EXIT_FAILURE);
    }

    fd = wiringPiSPISetup(CHANNEL_DEO, 500000);
    result = wiringPiSPIDataRW(CHANNEL_DEO, rawData, len);
    
    //read(wiringPiSPIGetFd (0), data, len);

    for (int i = 0; i<32; i++){ 
        printf("speed: ", rawData[i], "\n");
        }
    return 0;
/*
    pinMode(ENC_PIN_1A, INPUT);
    pinMode(ENC_PIN_1B, INPUT);
    pinMode(ENC_PIN_2A, INPUT);
    pinMode(ENC_PIN_2B, INPUT);
*/
}