From 8e530395fe3011db6a0e150b4885dacf5edadea3 Mon Sep 17 00:00:00 2001
From: David Schleef <ds@schleef.org>
Date: Tue, 12 Jun 2001 10:39:27 +0000
Subject: [PATCH] Test for internal triggering.

---
 testing/inttrig.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 testing/inttrig.c

diff --git a/testing/inttrig.c b/testing/inttrig.c
new file mode 100644
index 0000000..8b4ab19
--- /dev/null
+++ b/testing/inttrig.c
@@ -0,0 +1,106 @@
+
+#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 comedi_internal_trigger(comedi_t *device,unsigned int subdevice,
+	unsigned int trignum)
+{
+	comedi_insn insn;
+	lsampl_t data = 0;
+
+#ifndef INSN_INTTRIG
+#define INSN_INTTRIG		( 6 | INSN_MASK_WRITE|INSN_MASK_SPECIAL)
+#endif
+	memset(&insn,0,sizeof(insn));
+	insn.subdev = subdevice;
+	insn.insn = INSN_INTTRIG;
+	insn.n = 1;
+	insn.data = &data;
+
+	return comedi_do_insn(device,&insn);
+}
+
+
+int test_cmd_start_inttrig(void)
+{
+	comedi_cmd cmd;
+	char buf[BUFSZ];
+	unsigned int chanlist[1];
+	int go;
+	int total=0;
+	int ret;
+
+	if(!(comedi_get_subdevice_flags(device,subdevice)&SDF_CMD)){
+		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)<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;
+}
+
+
-- 
2.26.2