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#include <stdio.h>
#include <comedilib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <getopt.h>
#include <ctype.h>
#include <math.h>
#include <sys/time.h>
#include <string.h>
#include "comedi_test.h"
#define BUFSZ 2000
int test_cmd_start_inttrig(void)
{
comedi_cmd cmd;
char buf[BUFSZ];
unsigned int chanlist[1];
int go;
int total=0;
int ret;
unsigned int flags;
flags = comedi_get_subdevice_flags(device,subdevice);
/* attempt to make subdevice the current 'read' subdevice */
if(flags&SDF_CMD_READ) comedi_set_read_subdevice(device,subdevice);
if(!(flags&SDF_CMD) || (comedi_get_read_subdevice(device)!=subdevice)){
printf("not applicable\n");
return 0;
}
if(comedi_get_cmd_src_mask(device,subdevice,&cmd)<0){
printf(" not supported\n");
return 0;
}
if(!(cmd.start_src&TRIG_INT)){
printf(" not supported\n");
return 0;
}
if(comedi_get_cmd_generic_timed(device, subdevice, &cmd, 1, 1)<0){
printf(" not supported\n");
return 0;
}
if(realtime)cmd.flags |= TRIG_RT;
cmd.chanlist = chanlist;
cmd.start_src = TRIG_INT;
cmd.start_arg = 0;
cmd.scan_end_arg = 1;
cmd.stop_arg = 100;
cmd.chanlist_len = 1;
chanlist[0] = CR_PACK(0,0,0);
ret = comedi_command(device,&cmd);
if(ret!=0){
printf("E: comedi_command() returned %d, expecting 0\n",ret);
}
ret = comedi_internal_trigger(device,subdevice,0);
if(ret<0){
printf("E: comedi_internal_trigger(): %s\n",strerror(errno));
}
go=1;
while(go){
ret = read(comedi_fileno(device),buf,BUFSZ);
if(ret<0){
if(errno==EAGAIN){
usleep(10000);
}else{
go = 0;
printf("E: read: %s\n",strerror(errno));
}
}else if(ret==0){
go = 0;
}else{
total += ret;
if(verbose)
printf("read %d %d\n",ret,total);
}
}
return 0;
}
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