From: Frank Mori Hess <fmhess@speakeasy.net>
Date: Sat, 22 Jan 2005 14:31:20 +0000 (+0000)
Subject: mark initial buffer contents as written, remove some unused variables,
X-Git-Tag: v0_8_0~137
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=8f06878f5d028b17133609fd076deac4085affce;p=comedilib.git

mark initial buffer contents as written, remove some unused variables,
fixed buffer overrun
---

diff --git a/demo/ao_mmap.c b/demo/ao_mmap.c
index 82493e0..1646c76 100644
--- a/demo/ao_mmap.c
+++ b/demo/ao_mmap.c
@@ -70,8 +70,6 @@ int main(int argc, char *argv[])
 {
 	comedi_cmd cmd;
 	int err;
-	int n,m;
-	int total=0;
 	comedi_t *dev;
 	unsigned int chanlist[16];
 	unsigned int maxdata;
@@ -150,12 +148,17 @@ int main(int argc, char *argv[])
 		perror("mmap");
 		exit(1);
 	}
-	write_waveform(map, size, amplitude, offset, maxdata);
+	write_waveform(map, size / sizeof(sampl_t), amplitude, offset, maxdata);
 	if(msync(map, size, MS_SYNC) < 0)
 	{
 		perror("msync");
 		exit(1);
 	}
+	if(comedi_mark_buffer_written(dev, subdevice, size) < 0)
+	{
+		comedi_perror("comedi_mark_buffer_written");
+		exit(1);
+	}
 	ret = comedi_internal_trigger(dev, subdevice, 0);
 	if(ret<0){
 		comedi_perror("comedi_internal_trigger\n");