/**
* @brief Stops audio playing and Power down the Audio Codec.
* @param Option: could be one of the following parameters
* - CODEC_PDWN_HW: completely shut down the codec (physically).
* Then need to reconfigure the Codec after power on.
* @retval AUDIO_OK if correct communication, else wrong communication
*/
uint8_t BSP_AUDIO_OUT_Stop(uint32_t Option)
{
/* Call DMA Stop to disable DMA stream before stopping codec */
HAL_I2S_DMAStop(&hAudioOutI2s);
/* Call Audio Codec Stop function */
if(pAudioDrv->Stop(AUDIO_I2C_ADDRESS, Option) != 0)
{
return AUDIO_ERROR;
}
else
{
if(Option == CODEC_PDWN_HW)
{
/* Wait at least 100us */
HAL_Delay(1);
/* Power Down the codec */
HAL_GPIO_WritePin(AUDIO_RESET_GPIO, AUDIO_RESET_PIN, GPIO_PIN_RESET);
}
/* Return AUDIO_OK when all operations are correctly done */
return AUDIO_OK;
}
}
/**
* @brief Stops audio playing and Power down the Audio Codec.
* @param Option: could be one of the following parameters
* - CODEC_PDWN_SW: for software power off (by writing registers).
* Then no need to reconfigure the Codec after power on.
* - CODEC_PDWN_HW: completely shut down the codec (physically).
* Then need to reconfigure the Codec after power on.
* @retval AUDIO_OK if correct communication, else wrong communication
*/
uint8_t BSP_AUDIO_OUT_Stop(uint32_t Option)
{
/* Call the Media layer stop function */
HAL_I2S_DMAStop(&haudio_i2s);
/* Call Audio Codec Stop function */
if(audio_drv->Stop(AUDIO_I2C_ADDRESS, Option) != 0)
{
return AUDIO_ERROR;
}
else
{
if(Option == CODEC_PDWN_HW)
{
/* Wait at least 1ms */
HAL_Delay(1);
/* Reset the pin */
BSP_IO_WritePin(AUDIO_RESET_PIN, RESET);
}
/* Return AUDIO_OK when all operations are correctly done */
return AUDIO_OK;
}
}
/**
* @brief Stops sending dummy data as audio stream: function used to stop to
generate I2S master clock MCK for audio codec device.
* @retval AUDIO_OK if correct communication, else wrong communication
*/
static uint8_t I2SOUT_SendDummyData_Stop(void)
{
/* Call DMA Stop to disable DMA stream before stopping codec */
HAL_I2S_DMAStop(&hAudioOutI2s);
return AUDIO_OK;
}
/**
* @brief Stops audio recording.
* @param None
* @retval None
*/
uint8_t BSP_AUDIO_IN_Stop(void)
{
uint32_t ret = AUDIO_ERROR;
/* Call the Media layer pause function */
HAL_I2S_DMAStop(&hAudioInI2s);
/* Return AUDIO_OK when all operations are correctly done */
ret = AUDIO_OK;
return ret;
}
