From 0f242f556569ada998da490300711740ae6e23b2 Mon Sep 17 00:00:00 2001
From: Bertrand Songis <bsongis@gmail.com>
Date: Mon, 23 Dec 2013 10:42:57 +0100
Subject: [PATCH] [Taranis] No more audio freeze!

---
 src/audio_arm.cpp                    | 3 ++-
 src/targets/taranis/audio_driver.cpp | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/audio_arm.cpp b/src/audio_arm.cpp
index 8b6bf9b44..428e75856 100644
--- a/src/audio_arm.cpp
+++ b/src/audio_arm.cpp
@@ -325,8 +325,9 @@ void AudioQueue::pushBuffer(AudioBuffer *buffer)
 {
   buffer->state = AUDIO_BUFFER_FILLED;
 
-  if (dacQueue(buffer))
+  if (dacQueue(buffer)) {
     buffer->state = AUDIO_BUFFER_PLAYING;
+  }
 
   bufferWIdx = nextBufferIdx(bufferWIdx);
 }
diff --git a/src/targets/taranis/audio_driver.cpp b/src/targets/taranis/audio_driver.cpp
index d0b0508aa..5dc714fd5 100644
--- a/src/targets/taranis/audio_driver.cpp
+++ b/src/targets/taranis/audio_driver.cpp
@@ -95,8 +95,10 @@ void dacInit()
 
 bool dacQueue(AudioBuffer *buffer)
 {
+  __disable_irq();
   if (dacIdle) {
     dacIdle = false;
+    __enable_irq();
     DMA1_Stream5->CR &= ~DMA_SxCR_EN ;                              // Disable DMA channel
     DMA1->HIFCR = DMA_HIFCR_CTCIF5 | DMA_HIFCR_CHTIF5 | DMA_HIFCR_CTEIF5 | DMA_HIFCR_CDMEIF5 | DMA_HIFCR_CFEIF5 ; // Write ones to clear bits
     DMA1_Stream5->M0AR = CONVERT_PTR(buffer->data);
@@ -107,6 +109,7 @@ bool dacQueue(AudioBuffer *buffer)
     return true;
   }
   else {
+    __enable_irq();
     return false;
   }
 }