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Viewing changes to testing/cmd_1.c

  • Committer: Bazaar Package Importer
  • Author(s): David Schleef
  • Date: 2004-11-04 11:43:51 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20041104114351-a50kaei5yamka8r6
Tags: 0.7.22-2
It helps if the shared library is actually in the package.

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testing/cmd_1.c
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        int total=0;
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        int ret;
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        unsigned int flags = comedi_get_subdevice_flags(device,subdevice);
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        static const int num_samples = 100000;
 
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        int num_bytes;
 
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        if((flags & SDF_LSAMPL))
 
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        {
 
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                num_bytes = num_samples * sizeof(lsampl_t);
 
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        }else
 
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        {
 
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                num_bytes = num_samples * sizeof(sampl_t);
 
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        }
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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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        if(realtime)cmd.flags |= TRIG_RT;
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        cmd.chanlist = chanlist;
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        cmd.scan_end_arg = 1;
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        cmd.stop_arg = 1000000;
 
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        cmd.stop_arg = num_samples;
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        cmd.chanlist_len = 1;
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        chanlist[0] = CR_PACK(0,0,0);
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                if(verbose)printf("write %d %d\n",ret,total);
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        }
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        {
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                comedi_insn insn;
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                memset(&insn, 0, sizeof(comedi_insn));
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                insn.insn = INSN_INTTRIG;
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                insn.subdev = subdevice;
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                ret = comedi_do_insn(device, &insn);
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                if(ret<0){
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                        perror("comedi_inttrig");
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                        return 0;
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                }
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                if(verbose)printf("inttrig\n");
 
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        ret = comedi_internal_trigger(device, subdevice, 0);
 
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        if(ret<0){
 
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                perror("E: comedi_inttrig");
 
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                comedi_cancel(device, subdevice);
 
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                return 0;
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        }
 
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        if(verbose)printf("inttrig\n");
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        go=1;
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        while(go){
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                }else{
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                        total += ret;
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                        if(verbose)printf("write %d %d\n",ret,total);
 
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                        //deal with case where output doesn't support stop_src=TRIG_COUNT
 
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                        if(total >= num_bytes)
 
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                        {
 
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                                go = 0;
 
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                        }
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                }
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        }
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        // make sure all samples have been written out
 
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        while(1)
 
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        {       
 
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                ret = comedi_get_buffer_contents(device, subdevice);
 
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                if(ret < 0)
 
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                {
 
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                        printf("E: comedi_get_buffer_contents() returned %i\n", ret);
 
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                }else if(ret == 0) break;
 
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                usleep(10000);
 
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        }
 
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        // cancel needed in the case of stop_src==TRIG_NONE
 
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        if(comedi_cancel(device, subdevice))
 
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                printf("E: comedi_cancel() failed");
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        return 0;
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}
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