From 70102b2fa55ae036c612ee8c8ea1afa9b0313d29 Mon Sep 17 00:00:00 2001
From: Bertrand Songis <bsongis@gmail.com>
Date: Fri, 20 Dec 2013 10:51:34 +0100
Subject: [PATCH] [stock / gruvin9x] DSM2=SERIAL was broken since r2725, thanks
 Cam for reporting this issue!

---
 src/protocols/pulses_avr.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/protocols/pulses_avr.cpp b/src/protocols/pulses_avr.cpp
index 1ed8d05fb..707eac8c9 100644
--- a/src/protocols/pulses_avr.cpp
+++ b/src/protocols/pulses_avr.cpp
@@ -108,7 +108,9 @@ ISR(TIMER1_COMPA_vect) //2MHz pulse generation (BLOCKING ISR)
   // Call setupPulses only after REST pulse had been sent.
   // Must do this before toggle PORTB to keep timing accurate
   if (IS_DSM2_SERIAL_PROTOCOL(s_current_protocol[0]) || *((uint16_t*)pulses2MHzRPtr) == 0) {
-    OCR1A = SETUP_PULSES_DURATION;
+    if (!IS_DSM2_SERIAL_PROTOCOL(s_current_protocol[0])) {
+      OCR1A = SETUP_PULSES_DURATION;
+    }
     setupPulses(); // does not sei() for setupPulsesPPM
     heartbeat |= HEART_TIMER_PULSES;
     return;