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Initialize CRC for PDM2PCM library.
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@ -23,6 +23,7 @@
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#define RAISE_OS_EXCEPTION(msg) nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, msg))
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#define SAI_MIN(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a < _b ? _a : _b; })
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static CRC_HandleTypeDef hcrc;
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static SAI_HandleTypeDef hsai;
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static DMA_HandleTypeDef hdma_sai_rx;
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@ -131,6 +132,18 @@ static mp_obj_t py_audio_init()
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NVIC_SetPriority(AUDIO_SAI_DMA_IRQ, IRQ_PRI_DMA21);
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HAL_NVIC_EnableIRQ(AUDIO_SAI_DMA_IRQ);
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// Init CRC for the PDM library
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hcrc.Instance = CRC;
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hcrc.Init.DefaultPolynomialUse = DEFAULT_POLYNOMIAL_ENABLE;
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hcrc.Init.DefaultInitValueUse = DEFAULT_INIT_VALUE_ENABLE;
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hcrc.Init.InputDataInversionMode = CRC_INPUTDATA_INVERSION_NONE;
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hcrc.Init.OutputDataInversionMode = CRC_OUTPUTDATA_INVERSION_DISABLE;
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hcrc.InputDataFormat = CRC_INPUTDATA_FORMAT_BYTES;
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if (HAL_CRC_Init(&hcrc) != HAL_OK) {
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RAISE_OS_EXCEPTION("Failed to initialize CRC!");
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}
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__HAL_CRC_DR_RESET(&hcrc);
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return mp_const_none;
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}
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@ -337,6 +337,17 @@ void HAL_SAI_MspDeInit(SAI_HandleTypeDef* hsai)
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}
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#endif
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void HAL_CRC_MspInit(CRC_HandleTypeDef* hcrc)
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{
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__HAL_RCC_CRC_CLK_ENABLE();
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}
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void HAL_CRC_MspDeInit(CRC_HandleTypeDef* hcrc)
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{
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__HAL_RCC_CRC_CLK_DISABLE();
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}
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void HAL_MspDeInit(void)
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{
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