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Fix Nicla Vision PDM end() issue #505

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Merged
facchinm merged 2 commits into from
Jun 29, 2022
Merged

Fix Nicla Vision PDM end() issue #505

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abb836e
Nicla Vision PDM: let end() disable all IRQs and clocks and deinit al…
giulcioffi Jun 20, 2022
30c5f42
Nicla Vision PDM: select DFSDM1 clock before running clock configuration
giulcioffi Jun 21, 2022
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36 changes: 31 additions & 5 deletions libraries/PDM/src/nicla_vision/audio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -148,6 +148,7 @@ void HAL_DFSDM_FilterMspInit(DFSDM_Filter_HandleTypeDef* hdfsdm_filter)
hdma_dfsdm1_flt0.Init.Mode = DMA_CIRCULAR;
hdma_dfsdm1_flt0.Init.Priority = DMA_PRIORITY_LOW;
hdma_dfsdm1_flt0.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
HAL_DMA_DeInit(&hdma_dfsdm1_flt0);
if (HAL_DMA_Init(&hdma_dfsdm1_flt0) != HAL_OK)
{
Error_Handler();
Expand Down Expand Up @@ -214,7 +215,10 @@ void HAL_DFSDM_FilterMspDeInit(DFSDM_Filter_HandleTypeDef* hdfsdm_filter)
if(DFSDM1_Init == 0)
{
/* Peripheral clock disable */
__HAL_RCC_DFSDM1_CLK_DISABLE();
if (HAL_RCC_DFSDM1_CLK_ENABLED > 0) {
__HAL_RCC_DFSDM1_CLK_DISABLE();
HAL_RCC_DFSDM1_CLK_ENABLED--;
}

/**DFSDM1 GPIO Configuration
PD10 ------> DFSDM1_CKOUT
Expand Down Expand Up @@ -245,7 +249,10 @@ void HAL_DFSDM_ChannelMspDeInit(DFSDM_Channel_HandleTypeDef* hdfsdm_channel)
if(DFSDM1_Init == 0)
{
/* Peripheral clock disable */
__HAL_RCC_DFSDM1_CLK_DISABLE();
if (HAL_RCC_DFSDM1_CLK_ENABLED > 0) {
__HAL_RCC_DFSDM1_CLK_DISABLE();
HAL_RCC_DFSDM1_CLK_ENABLED--;
}

/**DFSDM1 GPIO Configuration
PD10 ------> DFSDM1_CKOUT
Expand Down Expand Up @@ -295,6 +302,7 @@ static int DFSDM_Init(uint32_t frequency)
hdfsdm1_channel2.Init.Awd.Oversampling = 2000000/frequency; /* 2MHz/125 = 16kHz */
hdfsdm1_channel2.Init.Offset = 0;
hdfsdm1_channel2.Init.RightBitShift = 0;
HAL_DFSDM_ChannelDeInit(&hdfsdm1_channel2);
if(HAL_OK != HAL_DFSDM_ChannelInit(&hdfsdm1_channel2))
{
return 0;
Expand All @@ -313,6 +321,7 @@ static int DFSDM_Init(uint32_t frequency)
hdfsdm1_filter0.Init.FilterParam.SincOrder = DFSDM_FILTER_FASTSINC_ORDER;
hdfsdm1_filter0.Init.FilterParam.Oversampling = 2000000/frequency; /* 2MHz/125 = 16kHz */
hdfsdm1_filter0.Init.FilterParam.IntOversampling = 1;
HAL_DFSDM_FilterDeInit(&hdfsdm1_filter0);
if(HAL_OK != HAL_DFSDM_FilterInit(&hdfsdm1_filter0))
{
return 0;
Expand Down Expand Up @@ -357,6 +366,7 @@ int py_audio_init(size_t channels, uint32_t frequency)

HAL_RCCEx_GetPeriphCLKConfig(&rcc_ex_clk_init_struct);

rcc_ex_clk_init_struct.PeriphClockSelection = RCC_PERIPHCLK_DFSDM1;
rcc_ex_clk_init_struct.Dfsdm1ClockSelection = RCC_DFSDM1CLKSOURCE_D2PCLK1;

HAL_RCCEx_PeriphCLKConfig(&rcc_ex_clk_init_struct);
Expand Down Expand Up @@ -398,13 +408,29 @@ void py_audio_gain_set(int gain_db)

void py_audio_deinit()
{
py_audio_stop_streaming();
HAL_DFSDM_FilterDeInit(&hdfsdm1_filter0);

// Disable IRQs
HAL_NVIC_DisableIRQ(DFSDM1_FLT0_IRQn);
HAL_NVIC_DisableIRQ(DFSDM1_FLT1_IRQn);
HAL_NVIC_DisableIRQ(AUDIO_DFSDM1_DMA_IRQ);

if (hdfsdm1_channel2.Instance != NULL) {
HAL_DFSDM_ChannelDeInit(&hdfsdm1_channel2);
hdfsdm1_channel2.Instance = NULL;
}

if (hdfsdm1_filter0.Instance != NULL) {
//HAL_DFSDM_FilterRegularStop_DMA(&hdfsdm1_filter0);
HAL_DFSDM_FilterDeInit(&hdfsdm1_filter0);
hdfsdm1_filter0.Instance = NULL;
}

if (hdma_dfsdm1_flt0.Instance != NULL) {
HAL_DMA_DeInit(&hdma_dfsdm1_flt0);
hdma_dfsdm1_flt0.Instance = NULL;
}

//free(g_pcmbuf);
xfer_status = 0;
g_pcmbuf = NULL;
}

Expand Down