From: Alexandru Gagniuc <redacted>
Date: Sat, 22 Dec 2012 22:00:44 +0000 (-0600)
Subject: serial-dmm: Properly handle continuous mode
X-Git-Tag: dsupstream~428
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=d55c89f523e74a2f629bb23e8fd9bf6db7e3758a;p=libsigrok.git

serial-dmm: Properly handle continuous mode

serial-dmm does not check if a sample limit is actually in place before deciding
to stop acquisition. Since the sample limit is set at 0 by default, operating
in continuous mode will cause acquisition to stop before even sending the first
sample.

Check to make sure we actually are in a sample-limited mode before stopping for
this reason.

Signed-off-by: Alexandru Gagniuc <redacted>
---

diff --git a/hardware/serial-dmm/protocol.c b/hardware/serial-dmm/protocol.c
index d10eec26..09f74dd4 100644
--- a/hardware/serial-dmm/protocol.c
+++ b/hardware/serial-dmm/protocol.c
@@ -177,7 +177,7 @@ static int receive_data(int fd, int revents, int dmm, void *info, void *cb_data)
 		}
 	}
 
-	if (devc->num_samples >= devc->limit_samples) {
+	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
 		sr_info("Requested number of samples reached, stopping.");
 		sdi->driver->dev_acquisition_stop(sdi, cb_data);
 		return TRUE;