From 2a18d27530ca150bfb7569966406d5fc3e5d3098 Mon Sep 17 00:00:00 2001
From: kiu <kiu@gmx.net>
Date: Wed, 3 Aug 2011 22:54:42 +0200
Subject: [PATCH] fixed stupid casting issues for overfloew detection

---
 firmware/applications/final/flame.c | 4 ++--
 firmware/applications/flame.c       | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/firmware/applications/final/flame.c b/firmware/applications/final/flame.c
index 3943458..a9ce06a 100644
--- a/firmware/applications/final/flame.c
+++ b/firmware/applications/final/flame.c
@@ -94,7 +94,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_UP) {
-        if (flameI2Cpwm + flameSpeedUp > flameI2Cpwm ) {
+        if (0xFF - flameI2Cpwm >= flameSpeedUp ) {
             flameI2Cpwm += flameSpeedUp;
         } else {        
             flameI2Cpwm = 0xFF;
@@ -113,7 +113,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_DOWN) {
-        if (flameI2Cpwm - flameSpeedDown < flameI2Cpwm ) {
+        if (flameSpeedDown <= flameI2Cpwm) {
             flameI2Cpwm -= flameSpeedDown;
         } else {
             flameI2Cpwm = 0x00;
diff --git a/firmware/applications/flame.c b/firmware/applications/flame.c
index 2831505..80bd060 100644
--- a/firmware/applications/flame.c
+++ b/firmware/applications/flame.c
@@ -84,7 +84,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_UP) {
-	if (flameI2Cpwm + flameSpeedUp > flameI2Cpwm ) {
+	if (0xFF - flameI2Cpwm >= flameSpeedUp) {
 	    flameI2Cpwm += flameSpeedUp;
 	} else {	
 	    flameI2Cpwm = 0xFF;
@@ -103,7 +103,7 @@ void tick_flame(void) { // every 10ms
     }
 
     if (flameMode == FLAME_DOWN) {
-	if (flameI2Cpwm - flameSpeedDown < flameI2Cpwm ) {
+	if (flameSpeedDown <= flameI2Cpwm) {
 	    flameI2Cpwm -= flameSpeedDown;
 	} else {
 	    flameI2Cpwm = 0x00;