Chase_da Linux Driver and API Library

T.Barnaby, BEAM Ltd, Version 1.0.1, 2009-05-08

Introduction

Installation

Installation from TAR archive source

1. Unpack the tar archive into a suitable directory.
2. "cd chase_da-1.0.1": Cd to the top level directory.
3. "make"
4. "sudo make install"

Usage

Examples

/*******************************************************************************
 *    Test1.c            CHASE_DA test code
 *                T.Barnaby,    BEAM Ltd,    2009-04-21
 *******************************************************************************
 *
 * This program generates a sinewave waveform on all channels.
 *
 * On a DA8150 the waveform frequency is: 2.34MHz (150/64).
 * On a DA11000 the waveform frequency is: 15.625MHz (1G/64).
 *
 */
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdint.h>
#include <errno.h>
#include <math.h>
#include <chase_da_lib.h>

int main(){
    int               i;
    int               cardNum = 1;
    int               nPoints = 1*64;
    int               r;
    ChaseDaSegment    segs[1];
    uint16_t          data0[nPoints];    

    i = chase_da_CountCards();
    printf("There are %d Chase_da cards in the system\n", i);    

    printf("Open Card: %d\n", cardNum);
    if(r = chase_da_Open(cardNum)){
        fprintf(stderr, "Error unable to open CHASE_DA: %d\n", r);
        return 1;
    }

    if(chase_da_BoardType(cardNum) == CHASE_DA8150){
        printf("Set Clock to 150MHz\n");
        if(r = chase_da_SetClock(cardNum, 150000000)){
            fprintf(stderr, "Error unable to set clock to 150MHz: %d\n", r);
            return 1;        
        }
    }

    printf("Initialise Segment\n");
    // Create Segment #1
    for(i = 0; i < nPoints; i++){
        data0[i] = (uint16_t)ceil(2047.0 - 2047 * cos(2 * M_PI * i/nPoints));
    }
    segs[0].segmentNum = 0;
    segs[0].data = data0;
    segs[0].numPoints = nPoints;
    segs[0].numLoops = 0;
    segs[0].beginPadValue = 2047;
    segs[0].endPadValue = 2047;
    segs[0].trigEnable = 0;
    segs[0].nextSegNum = 0;    

    printf("Create Segments\n");
    chase_da_CreateSegments(cardNum, 0xFF, 1, segs);

    printf("Set a marker at the start\n");
    chase_da_SetMarkers(cardNum, 64, 0xF, 0xF);

    printf("Start Running\n");
    chase_da_SetTriggerMode(cardNum, CHASE_DA_MODE_RUN, CHASE_DA_TRIG_POS);

//    chase_da_SetTriggerMode(cardNum, CHASE_DA_MODE_TRIGRUN, CHASE_DA_TRIG_POS);
//    chase_da_SetSoftTrigger(cardNum);

    pause();    
    return 0;
}

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