audio: Keep audio initialized after first

Trying to avoid DC adjustment happening on every recording
profjefer · Jul 13, 2020 · ab6e696 · ab6e696
1 parent 3ff6c9e
commit ab6e696
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/Drivers/BSP/STM32L496G-Discovery/stm32l496g_discovery_audio.c b/Drivers/BSP/STM32L496G-Discovery/stm32l496g_discovery_audio.c
@@ -113,6 +113,8 @@ b) RECORD A FILE:
 #include <string.h>
 #include "stm32l496g_discovery_audio.h"
 
+#include <stdbool.h>
+
 /** @addtogroup BSP
   * @{
   */
@@ -781,6 +783,12 @@ uint8_t BSP_AUDIO_IN_Init(uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
   */
 uint8_t BSP_AUDIO_IN_InitEx(uint16_t InputDevice, uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
 {
+  static bool audio_initialized = false;
+
+  if (audio_initialized) {
+    return AUDIO_OK;
+  }
+
   /* Update the audio input context */
   hAudioIn.AudioDrv           = &cs42l51_drv;
   hAudioIn.InputDevice        = InputDevice;
@@ -857,6 +865,7 @@ uint8_t BSP_AUDIO_IN_InitEx(uint16_t InputDevice, uint32_t AudioFreq, uint32_t B
   DmaRightRecHalfBuffCplt = 0;
   DmaRightRecBuffCplt     = 0;
 
+  audio_initialized = true;
   return AUDIO_OK;
 }
 

diff --git a/Projects/32L496GDISCOVERY/Demonstrations/Modules/audio_recorder/audio_recorder_app.c b/Projects/32L496GDISCOVERY/Demonstrations/Modules/audio_recorder/audio_recorder_app.c
@@ -358,11 +358,13 @@ AUDIO_RECORDER_ErrorTypdef  AUDIO_RECORDER_StopRec(void)
     Error_Handler();
   }
 
+#if 0
   if(BSP_AUDIO_IN_DeInit() == AUDIO_ERROR)
   {
     Error_Handler();
   }
-
+#endif  
+
 //  /* Configure SD IT pin */
 //  BSP_SD_Init();    
 //