86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* File Name : pdm2pcm.c
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* Description : This file provides code for the configuration
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* of the pdm2pcm instances.
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2019 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under Ultimate Liberty license
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* SLA0044, the "License"; You may not use this file except in compliance with
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* the License. You may obtain a copy of the License at:
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* www.st.com/SLA0044
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*
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******************************************************************************
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*/
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/* USER CODE END Header */
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/* Includes ------------------------------------------------------------------*/
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#include "pdm2pcm.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/* Global variables ---------------------------------------------------------*/
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PDM_Filter_Handler_t PDM1_filter_handler;
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PDM_Filter_Config_t PDM1_filter_config;
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* PDM2PCM init function */
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void MX_PDM2PCM_Init(void)
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{
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/* USER CODE BEGIN 2 */
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/* USER CODE END 2 */
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/**
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*/
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PDM1_filter_handler.bit_order = PDM_FILTER_BIT_ORDER_LSB;
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PDM1_filter_handler.endianness = PDM_FILTER_ENDIANNESS_BE;
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PDM1_filter_handler.high_pass_tap = 2104533974;
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PDM1_filter_handler.in_ptr_channels = 2;
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PDM1_filter_handler.out_ptr_channels = 2;
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PDM_Filter_Init(&PDM1_filter_handler);
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PDM1_filter_config.decimation_factor = PDM_FILTER_DEC_FACTOR_64;
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PDM1_filter_config.output_samples_number = 16;
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PDM1_filter_config.mic_gain = 0;
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PDM_Filter_setConfig(&PDM1_filter_handler, &PDM1_filter_config);
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/* USER CODE BEGIN 3 */
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/* USER CODE END 3 */
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}
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/* USER CODE BEGIN 4 */
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/* process function */
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uint8_t MX_PDM2PCM_Process(uint16_t *PDMBuf, uint16_t *PCMBuf)
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{
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/*
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uint8_t BSP_AUDIO_IN_PDMToPCM(uint16_t * PDMBuf, uint16_t * PCMBuf)
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Converts audio format from PDM to PCM.
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Parameters:
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PDMBuf : Pointer to PDM buffer data
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PCMBuf : Pointer to PCM buffer data
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Return values:
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AUDIO_OK in case of success, AUDIO_ERROR otherwise
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*/
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/* this example return the default status AUDIO_ERROR */
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return (uint8_t) 1;
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}
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/* USER CODE END 4 */
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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