stv0g/comedilib
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Changes to make it a little more robust

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This commit is contained in:
David Schleef 2002-03-18 21:50:40 +00:00
parent 92a02273c3
commit af2f7409a2
1 changed files with 12 additions and 7 deletions
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19
demo/cmd.c
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@ -85,8 +85,8 @@ int main(int argc, char *argv[])
/* prepare_cmd_lib() uses a Comedilib routine to find a
* good command for the device. prepare_cmd() explicitly
* creates a command, which may not work for your device. */
//prepare_cmd_lib(dev,subdevice,cmd);
prepare_cmd(dev,subdevice,cmd);
prepare_cmd_lib(dev,subdevice,cmd);
//prepare_cmd(dev,subdevice,cmd);
fprintf(stderr,"command before testing:\n");
dump_cmd(stderr,cmd);
@ -126,6 +126,10 @@ int main(int argc, char *argv[])
exit(1);
}
/* this is only for informational purposes */
gettimeofday(&start,NULL);
fprintf(stderr,"start time: %ld.%06ld\n",start.tv_sec,start.tv_usec);
/* start the command */
ret=comedi_command(dev,cmd);
if(ret<0){
@ -133,10 +137,6 @@ int main(int argc, char *argv[])
exit(1);
}
/* this is only for informational purposes */
gettimeofday(&start,NULL);
fprintf(stderr,"start time: %ld.%06ld\n",start.tv_sec,start.tv_usec);
while(1){
ret=read(comedi_fileno(dev),buf,BUFSZ);
if(ret<0){
@ -184,11 +184,16 @@ int prepare_cmd_lib(comedi_t *dev,int subdevice,comedi_cmd *cmd)
{
int ret;
memset(cmd,0,sizeof(*cmd));
/* This comedilib function will get us a generic timed
* command for a particular board. If it returns -1,
* that's bad. */
ret = comedi_get_cmd_generic_timed(dev,subdevice,cmd,1e9/freq);
if(ret<0)return ret;
if(ret<0){
printf("comedi_get_cmd_generic_timed failed\n");
return ret;
}
/* Modify parts of the command */
cmd->chanlist = chanlist;