stv0g/comedilib
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This commit is contained in:
David Schleef 2000-03-06 08:34:44 +00:00
parent 03f8fd8378
commit 6e6de1271a
1 changed files with 86 additions and 4 deletions
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90
demo/cmd.c
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@ -26,6 +26,7 @@ char buf[BUFSZ];
static void do_cmd(comedi_t *dev);
void dump_cmd(comedi_cmd *cmd);
int main(int argc, char *argv[])
{
@ -62,10 +63,10 @@ static void do_cmd(comedi_t *dev)
cmd.start_arg = 0;
cmd.scan_begin_src = TRIG_TIMER;
cmd.scan_begin_arg = 1000000; /* in ns */
cmd.scan_begin_arg = 1; /* in ns */
cmd.convert_src = TRIG_TIMER;
cmd.convert_arg = 100000; /* in ns */
cmd.convert_arg = 1; /* in ns */
cmd.scan_end_src = TRIG_COUNT;
cmd.scan_end_arg = 4; /* number of channels */
@ -89,14 +90,95 @@ static void do_cmd(comedi_t *dev)
cmd.data = NULL;
cmd.data_len = 0;
ret=ioctl(comedi_fileno(dev),COMEDI_CMDTEST,&cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("ioctl");
return;
}
dump_cmd(&cmd);
cmd.chanlist = chanlist;
cmd.chanlist_len = 4;
ret=ioctl(comedi_fileno(dev),COMEDI_CMDTEST,&cmd);
printf("test ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("ioctl");
return;
}
dump_cmd(&cmd);
cmd.chanlist = chanlist;
cmd.chanlist_len = 4;
ret=ioctl(comedi_fileno(dev),COMEDI_CMD,&cmd);
printf("ioctl returned %d\n",ret);
printf("ret=%d\n",ret);
if(ret<0){
printf("errno=%d\n",errno);
comedi_perror("ioctl");
return;
}
do{
ret=read(comedi_fileno(dev),buf,BUFSZ);
printf("read %d\n",ret);
}while(ret>=0);
}while(ret>0);
printf("errno=%d\n",errno);
}
char *cmd_src(int src)
{
switch(src){
case TRIG_NONE:
return "none";
case TRIG_NOW:
return "now";
case TRIG_FOLLOW:
return "follow";
case TRIG_TIME:
return "time";
case TRIG_TIMER:
return "timer";
case TRIG_COUNT:
return "count";
case TRIG_EXT:
return "ext";
case TRIG_INT:
return "int";
default:
return "unknown";
}
}
void dump_cmd(comedi_cmd *cmd)
{
printf("start: %s %d\n",
cmd_src(cmd->start_src),
cmd->start_arg);
printf("scan_begin: %s %d\n",
cmd_src(cmd->scan_begin_src),
cmd->scan_begin_arg);
printf("convert: %s %d\n",
cmd_src(cmd->convert_src),
cmd->convert_arg);
printf("scan_end: %s %d\n",
cmd_src(cmd->scan_end_src),
cmd->scan_end_arg);
printf("stop: %s %d\n",
cmd_src(cmd->stop_src),
cmd->stop_arg);
}