141 lines
3.7 KiB
C
141 lines
3.7 KiB
C
/* USER CODE BEGIN Header */
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/**
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******************************************************************************
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* @file i2s.c
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* @brief This file provides code for the configuration
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* of the I2S instances.
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2024 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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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 "i2s.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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I2S_HandleTypeDef hi2s3;
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/* I2S3 init function */
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void MX_I2S3_Init(void)
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{
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/* USER CODE BEGIN I2S3_Init 0 */
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/* USER CODE END I2S3_Init 0 */
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/* USER CODE BEGIN I2S3_Init 1 */
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/* USER CODE END I2S3_Init 1 */
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hi2s3.Instance = SPI3;
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hi2s3.Init.Mode = I2S_MODE_MASTER_TX;
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hi2s3.Init.Standard = I2S_STANDARD_PHILIPS;
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hi2s3.Init.DataFormat = I2S_DATAFORMAT_16B;
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hi2s3.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE;
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hi2s3.Init.AudioFreq = I2S_AUDIOFREQ_96K;
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hi2s3.Init.CPOL = I2S_CPOL_LOW;
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hi2s3.Init.ClockSource = I2S_CLOCK_PLL;
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hi2s3.Init.FullDuplexMode = I2S_FULLDUPLEXMODE_DISABLE;
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if (HAL_I2S_Init(&hi2s3) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN I2S3_Init 2 */
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/* USER CODE END I2S3_Init 2 */
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}
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void HAL_I2S_MspInit(I2S_HandleTypeDef* i2sHandle)
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{
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
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if(i2sHandle->Instance==SPI3)
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{
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/* USER CODE BEGIN SPI3_MspInit 0 */
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/* USER CODE END SPI3_MspInit 0 */
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/** Initializes the peripherals clock
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*/
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PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
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PeriphClkInitStruct.PLLI2S.PLLI2SN = 192;
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PeriphClkInitStruct.PLLI2S.PLLI2SR = 2;
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if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/* I2S3 clock enable */
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__HAL_RCC_SPI3_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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/**I2S3 GPIO Configuration
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PA4 ------> I2S3_WS
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PC7 ------> I2S3_MCK
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PC10 ------> I2S3_CK
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PC12 ------> I2S3_SD
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*/
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GPIO_InitStruct.Pin = I2S3_WS_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
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HAL_GPIO_Init(I2S3_WS_GPIO_Port, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = I2S3_MCK_Pin|I2S3_SCK_Pin|I2S3_SD_Pin;
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GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.Alternate = GPIO_AF6_SPI3;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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/* USER CODE BEGIN SPI3_MspInit 1 */
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/* USER CODE END SPI3_MspInit 1 */
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}
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}
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void HAL_I2S_MspDeInit(I2S_HandleTypeDef* i2sHandle)
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{
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if(i2sHandle->Instance==SPI3)
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{
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/* USER CODE BEGIN SPI3_MspDeInit 0 */
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/* USER CODE END SPI3_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_SPI3_CLK_DISABLE();
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/**I2S3 GPIO Configuration
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PA4 ------> I2S3_WS
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PC7 ------> I2S3_MCK
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PC10 ------> I2S3_CK
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PC12 ------> I2S3_SD
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*/
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HAL_GPIO_DeInit(I2S3_WS_GPIO_Port, I2S3_WS_Pin);
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HAL_GPIO_DeInit(GPIOC, I2S3_MCK_Pin|I2S3_SCK_Pin|I2S3_SD_Pin);
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/* USER CODE BEGIN SPI3_MspDeInit 1 */
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/* USER CODE END SPI3_MspDeInit 1 */
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}
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}
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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