56 lines
995 B
C
56 lines
995 B
C
/*
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* A very small one-shot input demo
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* Part of Comedilib
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*
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* Copyright (c) 1999,2000 David A. Schleef <ds@schleef.org>
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*
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* This file may be freely modified, distributed, and combined with
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* other software, as long as proper attribution is given in the
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* source code.
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*/
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/*
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A little input demo
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*/
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#include <stdio.h>
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#include <comedilib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <getopt.h>
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#include <ctype.h>
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#include "examples.h"
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comedi_t *device;
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int main(int argc, char *argv[])
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{
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lsampl_t data;
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int ret;
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parse_options(argc,argv);
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device=comedi_open(filename);
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if(!device){
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comedi_perror(filename);
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exit(0);
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}
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if(verbose){
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printf("measuring device=%s subdevice=%d channel=%d range=%d analog reference=%d\n",
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filename,subdevice,channel,range,aref);
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}
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ret=comedi_data_read(device,subdevice,channel,range,aref,&data);
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if(ret<0){
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comedi_perror(filename);
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exit(0);
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}
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printf("%d\n",data);
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return 0;
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}
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