From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Wed, 27 May 2015 10:47:12 +0000 (+0200)
Subject: Count consecutive errors only once.
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=openparking.git;a=commitdiff_plain;h=7b7601109907bbacc91cb7895557218db57fc700

Count consecutive errors only once.
---

diff --git a/firmware/firmware.c b/firmware/firmware.c
index c2dd944..d57a5a2 100644
--- a/firmware/firmware.c
+++ b/firmware/firmware.c
@@ -110,7 +110,7 @@ static void do_measurement(unsigned char trig)
 
 		if (to_start & (1 << i)) { // echo not received
 			uint16_t err_count = err_counts[off] & 0xFF;
-			if (err_count < 255) {
+			if (distances[off] != -1 && err_count < 255) {
 				err_count++;
 				err_counts[off] = (err_counts[off] & 0xFF00)
 					| err_count;