From 32f9365ee36f9e8a4c92745180c2231a6bf5f423 Mon Sep 17 00:00:00 2001
From: hg <devnull@localhost>
Date: Tue, 3 Mar 2015 21:56:18 +0100
Subject: [PATCH] negative numbers are displayed correctly too

---
 src/display.cpp | 1 +
 src/main.cpp    | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/display.cpp b/src/display.cpp
index 4b73a15..ac7e201 100644
--- a/src/display.cpp
+++ b/src/display.cpp
@@ -117,6 +117,7 @@ void dispSet(uint8_t unit, int16_t value) {
 			dispSetError();
 		} else {
 			uint8_t neg = (value < 0) ? 1 : 0;
+			value = (value < 0) ? -1 * value : value;
 			// value = abs(value);
 
 			uint8_t digit3 = value / 1000;
diff --git a/src/main.cpp b/src/main.cpp
index f63d130..97fb3a3 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -35,8 +35,8 @@ int main() {
 	spiInit();
 	dispInit();
 
-	dispSet(0, 12);
-	dispSet(1, 437);
+	dispSet(0, -12);
+	dispSet(1, -990);
 
 	__enable_interrupt();