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  • Committer: Bazaar Package Importer
  • Author(s): David Schleef
  • Date: 2003-09-23 18:11:12 UTC
  • Revision ID: james.westby@ubuntu.com-20030923181112-sat05jyh702rb1at
Tags: upstream-0.7.21
Import upstream version 0.7.21

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testing/inttrig.c
 
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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 <sys/ioctl.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 <math.h>
 
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#include <sys/time.h>
 
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#include <string.h>
 
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#include "comedi_test.h"
 
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#define BUFSZ 2000
 
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int comedi_internal_trigger(comedi_t *device,unsigned int subdevice,
 
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        unsigned int trignum)
 
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{
 
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        comedi_insn insn;
 
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        lsampl_t data = 0;
 
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#ifndef INSN_INTTRIG
 
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#define INSN_INTTRIG            ( 6 | INSN_MASK_WRITE|INSN_MASK_SPECIAL)
 
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#endif
 
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        memset(&insn,0,sizeof(insn));
 
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        insn.subdev = subdevice;
 
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        insn.insn = INSN_INTTRIG;
 
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        insn.n = 1;
 
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        insn.data = &data;
 
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        return comedi_do_insn(device,&insn);
 
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}
 
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int test_cmd_start_inttrig(void)
 
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{
 
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        comedi_cmd cmd;
 
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        char buf[BUFSZ];
 
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        unsigned int chanlist[1];
 
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        int go;
 
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        int total=0;
 
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        int ret;
 
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        unsigned int flags;
 
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        flags = comedi_get_subdevice_flags(device,subdevice);
 
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        if(!(flags&SDF_CMD) || flags&SDF_WRITEABLE){
 
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                printf("not applicable\n");
 
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                return 0;
 
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        }
 
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        if(comedi_get_cmd_src_mask(device,subdevice,&cmd)<0){
 
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                printf("  not supported\n");
 
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                return 0;
 
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        }
 
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        if(!(cmd.start_src&TRIG_INT)){
 
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                printf("  not supported\n");
 
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                return 0;
 
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        }
 
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        if(comedi_get_cmd_generic_timed(device,subdevice,&cmd,1)<0){
 
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                printf("  not supported\n");
 
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                return 0;
 
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        }
 
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        if(realtime)cmd.flags |= TRIG_RT;
 
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        cmd.chanlist = chanlist;
 
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        cmd.start_src = TRIG_INT;
 
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        cmd.start_arg = 0;
 
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        cmd.scan_end_arg = 1;
 
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        cmd.stop_arg = 100;
 
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        cmd.chanlist_len = 1;
 
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        chanlist[0] = CR_PACK(0,0,0);
 
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        ret = comedi_command(device,&cmd);
 
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        if(ret!=0){
 
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                printf("E: comedi_command() returned %d, expecting 0\n",ret);
 
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        }
 
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        ret = comedi_internal_trigger(device,subdevice,0);
 
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        if(ret<0){
 
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                printf("E: comedi_internal_trigger(): %s\n",strerror(errno));
 
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        }
 
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        go=1;
 
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        while(go){
 
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                ret = read(comedi_fileno(device),buf,BUFSZ);
 
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                if(ret<0){
 
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                        if(errno==EAGAIN){
 
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                                usleep(10000);
 
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                        }else{
 
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                                go = 0;
 
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                                printf("E: read: %s\n",strerror(errno));
 
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                        }
 
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                }else if(ret==0){
 
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                        go = 0;
 
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                }else{
 
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                        total += ret;
 
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                        if(verbose)
 
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                                printf("read %d %d\n",ret,total);
 
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                }
 
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        }
 
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        return 0;
 
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}
 
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