From 9cdbf0a8e7a84d9edf516f5e2db462e1a5a265e9 Mon Sep 17 00:00:00 2001
From: Wolfgang Hottgenroth <wolfgang@hottgenroth.net>
Date: Fri, 14 Oct 2016 14:57:26 +0200
Subject: [PATCH] introduce direction flag

---
 src/inverterCtrl.c | 29 +++++++++++++++++++++--------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/src/inverterCtrl.c b/src/inverterCtrl.c
index b1e52f3..8327d42 100644
--- a/src/inverterCtrl.c
+++ b/src/inverterCtrl.c
@@ -19,17 +19,30 @@
 
 
 volatile uint8_t pulseWidthIdx = 0;
+volatile bool direction = true;
 
 
 ISR(TIMER1_A0, TA1_ISR_Ovrfl) {
-	if (pulseWidthIdx == 0) {
-		P2OUT |= BIT3;
-	}
-	if (pulseWidthIdx == 13) {
-		P2OUT |= BIT4;
-	}
-	if (pulseWidthIdx == 26) {
-		P2OUT |= BIT5;
+	if (direction) {
+		if (pulseWidthIdx == 0) {
+			P2OUT |= BIT3;
+		}
+		if (pulseWidthIdx == 13) {
+			P2OUT |= BIT4;
+		}
+		if (pulseWidthIdx == 26) {
+			P2OUT |= BIT5;
+		}
+	} else {
+		if (pulseWidthIdx == 0) {
+			P2OUT |= BIT4;
+		}
+		if (pulseWidthIdx == 13) {
+			P2OUT |= BIT3;
+		}
+		if (pulseWidthIdx == 26) {
+			P2OUT |= BIT5;
+		}
 	}
 
 	pulseWidthIdx++;