wavegen.c

// WAVEGEN IP Example, gpio.c
// WAVEGEN Shell Command

//-----------------------------------------------------------------------------
// Hardware Target
//-----------------------------------------------------------------------------

// Target Platform: Xilinx XUP Blackboard

// Hardware configuration:
//
// AXI4-Lite interface:
//   Mapped to offset of 20000
//
// GPIO interface:
//   GPIO[31-0] is used as a general purpose GPIO port

//-----------------------------------------------------------------------------

#include <stdlib.h>          // EXIT_ codes
#include <stdbool.h>
#include <stdio.h>           // printf
#include <string.h>          // strcmp
#include "wavegen_ip.h"         // IP library

int main(int argc, char* argv[])
{
    if (!wavegenOpen())
    {
        printf("Could not map an address for the wavegen IP, Are you running as root?\n");
        exit(EXIT_FAILURE);
    }
    char *channel = argv[2];

    if (argc == 2)
    {
        if (strcmp(argv[1], "run") == 0)
            configureRun();
        else if (strcmp(argv[1], "stop") == 0)
            configureStop();
        else 
            printf("  command not understood\n");

        // TODO: add help command here
        // TODO: add arb command here
    }

    else if (argc == 4 && (strcmp(argv[1], "DC") == 0 || strcmp(argv[1], "dc") == 0))
    {
     //wavegen DC OUT OFS  
        int16_t voltage = atoi(argv[3]);
        configureDC(channel, voltage);
    }

    else if (argc == 4 && strcmp(argv[1], "cycles") == 0)
    {
        // wavegen cycles OUT, continuous
        if (strcmp(argv[3], "continuous") == 0)
        {
            setCycles(channel, 0);
        }
        //wavegen cycles OUT, N
        else
        {
            int cycles = atoi(argv[3]);
            setCycles(channel, cycles);
        }
    }
    // wavegen {sine|sawtooth|square|triangle} OUT FREQ AMP [OFFS] [PHASE_OFFS] [DTCYC] 
    else if (argc == 5 || argc == 6 || argc == 7 || argc == 8) {

        uint8_t mode; // 0, 1, 2, 3, 4, or 5
        uint32_t frequency = atoi(argv[3]); // 0 to 500000000 (units of 100uHz)
        uint16_t amplitude = atoi(argv[4]); // -25000 to 25000
        int16_t offset = argc > 5 ? atoi(argv[5]) : 0; // -25000 to 25000
        int16_t phaseOffs = argc > 6 ? atoi(argv[6]) : 0; // -18000 to 18000
        uint16_t dutyCycle = argc > 7 ? atoi(argv[7]) : 32768; // 0 to 65535

        // wavegen sine OUT, FREQ, AMP, [OFS] [PHASEOFFS]
        if (strcmp(argv[1], "sine") == 0)
        {
            mode = MODE_SINE;
            //dutyCycle = 0;                     
        }
        // wavegen sawtooth OUT, FREQ, AMP, [OFS], [PHASEOFFS]
        else if (strcmp(argv[1], "sawtooth") == 0)
        {
            mode = MODE_SAWTOOTH;
            //dutyCycle = 0;
        }
        // wavegen triangle OUT, FREQ, AMP, [OFS], [PHASEOFFS]
        else if (strcmp(argv[1], "triangle") == 0)
        {
            mode = MODE_TRIANGLE;
            //dutyCycle = 0;
        }

        //wavegen square OUT, FREQ, AMP, [OFS, [DC]], [PHASEOFFS]
        else if (strcmp(argv[1], "square") == 0)
        {
            mode = MODE_SQUARE;
        }
        else 
            printf("  command not understood\n");      

        configureWaveform(channel, mode, frequency, amplitude, offset, dutyCycle, phaseOffs);
    }
    else 
        printf("  command not understood\n");

    return EXIT_SUCCESS;
}