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stm32-f4discovery-cc256x: cnofigure dma for microphone input

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This commit is contained in:
Matthias Ringwald 2019-02-26 13:42:49 +01:00
parent 7cff3af764
commit 01b78a8f8c
2 changed files with 17 additions and 8 deletions
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11
port/stm32-f4discovery-cc256x/src/bsp/audio.c
View File

@ -4,6 +4,7 @@
// we need to provide the missing IRQ handler somewhere
extern I2S_HandleTypeDef hAudioOutI2s;
extern I2S_HandleTypeDef hAudioInI2s;
/**
* @brief This function handles main I2S interrupt.
@ -14,3 +15,13 @@ void DMA1_Stream7_IRQHandler(void)
{
HAL_DMA_IRQHandler(hAudioOutI2s.hdmatx);
}
/**
* @brief This function handles main I2S interrupt.
* @param None
* @retval 0 if correct communication, else wrong communication
*/
void DMA1_Stream3_IRQHandler(void)
{
HAL_DMA_IRQHandler(hAudioInI2s.hdmarx);
}

14
port/stm32-f4discovery-cc256x/src/bsp/stm32f4_discovery_audio.c
View File

@ -192,10 +192,9 @@ __IO uint16_t AudioInVolume = DEFAULT_AUDIO_IN_VOLUME;
/** @defgroup STM32F4_DISCOVERY_AUDIO_Private_Function_Prototypes STM32F4 DISCOVERY AUDIO Private Function Prototypes
* @{
*/
static uint8_t I2S2_Init(uint32_t AudioFreq);
static uint8_t I2S3_Init(uint32_t AudioFreq);
// static uint8_t I2S2_Init(uint32_t AudioFreq);
// static void PDMDecoder_Init(uint32_t AudioFreq, uint32_t ChnlNbr);
static void PDMDecoder_Init(uint32_t AudioFreq, uint32_t ChnlNbr);
/**
* @}
@ -698,8 +697,6 @@ static uint8_t I2S3_Init(uint32_t AudioFreq)
}
}
#if 0
/**
* @}
*/
@ -824,6 +821,7 @@ uint8_t BSP_AUDIO_IN_SetVolume(uint8_t Volume)
*/
uint8_t BSP_AUDIO_IN_PDMToPCM(uint16_t *PDMBuf, uint16_t *PCMBuf)
{
#if 0
uint16_t AppPDM[INTERNAL_BUFF_SIZE/2];
uint32_t index = 0;
@ -845,6 +843,7 @@ uint8_t BSP_AUDIO_IN_PDMToPCM(uint16_t *PDMBuf, uint16_t *PCMBuf)
}
/* Return AUDIO_OK when all operations are correctly done */
#endif
return AUDIO_OK;
}
@ -1046,6 +1045,7 @@ __weak void BSP_AUDIO_IN_Error_Callback(void)
*/
static void PDMDecoder_Init(uint32_t AudioFreq, uint32_t ChnlNbr)
{
#if 0
uint32_t i = 0;
/* Enable CRC peripheral to unlock the PDM library */
@ -1063,6 +1063,7 @@ static void PDMDecoder_Init(uint32_t AudioFreq, uint32_t ChnlNbr)
Filter[i].In_MicChannels = ChnlNbr;
PDM_Filter_Init((PDMFilter_InitStruct *)&Filter[i]);
}
#endif
}
/**
@ -1099,7 +1100,6 @@ static uint8_t I2S2_Init(uint32_t AudioFreq)
return AUDIO_OK;
}
}
#endif
/**
* @}
@ -1121,12 +1121,10 @@ void HAL_I2S_ErrorCallback(I2S_HandleTypeDef *hi2s)
{
BSP_AUDIO_OUT_Error_CallBack();
}
#if 0
if(hi2s->Instance == I2S2)
{
BSP_AUDIO_IN_Error_Callback();
}
#endif
}
/**