From: Joel Holdsworth <redacted>
Date: Mon, 11 Mar 2013 23:30:34 +0000 (+0000)
Subject: Check that at least one probe is enabled before acquisition begins
X-Git-Tag: pulseview-0.1.0~85
X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=commitdiff_plain;h=9c48fa57f507c1eb153b0fb4d3a273c5e32757c8

Check that at least one probe is enabled before acquisition begins
---

diff --git a/pv/sigsession.cpp b/pv/sigsession.cpp
index 8ab7dab8..a611e7ac 100644
--- a/pv/sigsession.cpp
+++ b/pv/sigsession.cpp
@@ -77,6 +77,21 @@ void SigSession::start_capture(struct sr_dev_inst *sdi,
 {
 	stop_capture();
 
+	// Check that at least one probe is enabled
+	const GSList *l;
+	for (l = sdi->probes; l; l = l->next) {
+		sr_probe *const probe = (sr_probe*)l->data;
+		assert(probe);
+		if (probe->enabled)
+			break;
+	}
+
+	if (!l) {
+		error_handler(tr("No probes enabled."));
+		return;
+	}
+
+	// Begin the session
 	_sampling_thread.reset(new boost::thread(
 		&SigSession::sample_thread_proc, this, sdi,
 		record_length, error_handler));