# HG changeset patch
# User Daniele Nicolodi <daniele.nicolodi@obspm.fr>
# Date 1434458016 -7200
# Node ID 6c748ed6a7c549bf1f0e33fc3d912cd75d283b77
# Parent  5296f3bcd1609fa83d85e9fff32853379f452353
Stricter error checks ad9912 ramp frequency function

diff -r 5296f3bcd160 -r 6c748ed6a7c5 ad9912.c
--- a/ad9912.c	Tue Jun 16 14:31:35 2015 +0200
+++ b/ad9912.c	Tue Jun 16 14:33:36 2015 +0200
@@ -92,26 +92,29 @@
  */
 int ad9912_ramp_frequency2(struct ad9912 *d, unsigned channel, double f1, double f2, double fstep)
 {
+	int r = 0;
 	const int delay = 10000;
 	
 	/* f2 > f1 */
 	while ((f2 - f1) > fstep) {
 		f1 += fstep;
-		ad9912_set_frequency(d, channel, f1);
+		r = ad9912_set_frequency(d, channel, f1);
+		if (r < 0)
+			return r;
 		usleep(delay);
 	}
 	
 	/* f2 < f1 */
 	while ((f1 - f2) > fstep) {
 		f1 -= fstep;
-		ad9912_set_frequency(d, channel, f1);
+		r = ad9912_set_frequency(d, channel, f1);
+		if (r < 0)
+			return r;
 		usleep(delay);
 	}
 	
 	/* final adjustment */
-	ad9912_set_frequency(d, channel, f2);
-	
-	return 0;
+	return ad9912_set_frequency(d, channel, f2);
 }