From: David Schleef <ds@schleef.org>
Date: Mon, 28 May 2001 02:36:03 +0000 (+0000)
Subject: added cmd related functions
X-Git-Tag: r0_7_16~87
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=64b3584ff79239eeaba8e3126b7b664dd23b6181;p=comedilib.git

added cmd related functions
---

diff --git a/lib/cmd.c b/lib/cmd.c
new file mode 100644
index 0000000..82fbe9a
--- /dev/null
+++ b/lib/cmd.c
@@ -0,0 +1,90 @@
+
+#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>
+
+
+int comedi_get_cmd_src_mask(comedi_t *it,unsigned int s,comedi_cmd *cmd)
+{
+	memset(cmd,0,sizeof(*cmd));
+
+	cmd->subdev = s;
+
+	cmd->flags = 0;
+
+	cmd->start_src = TRIG_ANY;
+	cmd->scan_begin_src = TRIG_ANY;
+	cmd->convert_src = TRIG_ANY;
+	cmd->scan_end_src = TRIG_ANY;
+	cmd->stop_src = TRIG_ANY;
+
+	return comedi_command_test(it,cmd);
+}
+
+
+int comedi_get_cmd_generic_timed(comedi_t *it,unsigned int s,comedi_cmd *cmd)
+{
+	int ret;
+
+	ret = comedi_get_cmd_src_mask(it,s,cmd);
+	if(ret<0)return ret;
+
+	if(cmd->start_src&TRIG_NOW){
+		cmd->start_src=TRIG_NOW;
+		cmd->start_arg=0;
+	}else if(cmd->start_src&TRIG_FOLLOW){
+		cmd->start_src=TRIG_FOLLOW;
+		cmd->start_arg=0;
+	}
+		/* hmmm... don't know what to do */
+		return -1;
+	}
+
+	if(cmd->convert_src&TRIG_TIMER){
+		if(cmd->scan_begin_src&TRIG_FOLLOW){
+			cmd->convert_src = TRIG_TIMER;
+			cmd->scan_begin_src = TRIG_FOLLOW;
+		}else{
+			cmd->convert_src = TRIG_TIMER;
+			cmd->scan_begin_src = TRIG_TIMER;
+		}
+	}else{
+		//printf("can't do timed?!?\n");
+		return -1;
+	}
+
+	cmd->scan_end_src = TRIG_COUNT;
+	cmd->scan_end_arg = 1;
+
+	if(cmd->stop_src&TRIG_COUNT){
+		cmd->stop_src=TRIG_COUNT;
+		cmd->stop_arg=2;
+	}else if(cmd->stop_src&TRIG_NONE){
+		cmd->stop_src=TRIG_NONE;
+		cmd->stop_arg=0;
+	}else{
+		printf("can't find a good stop_src\n");
+		return -1;
+	}
+
+	cmd->chanlist_len = 1;
+
+	ret=comedi_command_test(it,cmd);
+	if(ret==3){
+		/* good */
+		ret=comedi_command_test(it,cmd);
+	}
+	if(ret==4 || ret==0){
+		return 0;
+	}
+	return -1;
+}
+