151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/**
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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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* <h2><center>© Copyright (c) 2021 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 BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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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 hi2s2;
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/* I2S2 init function */
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void MX_I2S2_Init(void)
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{
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/* USER CODE BEGIN I2S2_Init 0 */
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/* USER CODE END I2S2_Init 0 */
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/* USER CODE BEGIN I2S2_Init 1 */
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/* USER CODE END I2S2_Init 1 */
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hi2s2.Instance = SPI2;
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hi2s2.Init.Mode = I2S_MODE_MASTER_TX;
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hi2s2.Init.Standard = I2S_STANDARD_PHILIPS;
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hi2s2.Init.DataFormat = I2S_DATAFORMAT_16B;
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hi2s2.Init.MCLKOutput = I2S_MCLKOUTPUT_DISABLE;
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hi2s2.Init.AudioFreq = I2S_AUDIOFREQ_8K;
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hi2s2.Init.CPOL = I2S_CPOL_LOW;
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hi2s2.Init.FirstBit = I2S_FIRSTBIT_MSB;
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hi2s2.Init.WSInversion = I2S_WS_INVERSION_DISABLE;
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hi2s2.Init.Data24BitAlignment = I2S_DATA_24BIT_ALIGNMENT_RIGHT;
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hi2s2.Init.MasterKeepIOState = I2S_MASTER_KEEP_IO_STATE_DISABLE;
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if (HAL_I2S_Init(&hi2s2) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN I2S2_Init 2 */
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/* USER CODE END I2S2_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==SPI2)
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{
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/* USER CODE BEGIN SPI2_MspInit 0 */
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/* USER CODE END SPI2_MspInit 0 */
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/** Initializes the peripherals clock
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*/
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PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SPI2;
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PeriphClkInitStruct.Spi123ClockSelection = RCC_SPI123CLKSOURCE_PLL;
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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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/* I2S2 clock enable */
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__HAL_RCC_SPI2_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOD_CLK_ENABLE();
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__HAL_RCC_GPIOI_CLK_ENABLE();
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/**I2S2 GPIO Configuration
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PB4 (NJTRST) ------> I2S2_WS
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PD3 ------> I2S2_CK
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PI3 ------> I2S2_SDO
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_4;
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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_AF7_SPI2;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_3;
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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_AF5_SPI2;
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HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_3;
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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_AF5_SPI2;
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HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
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/* USER CODE BEGIN SPI2_MspInit 1 */
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/* USER CODE END SPI2_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==SPI2)
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{
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/* USER CODE BEGIN SPI2_MspDeInit 0 */
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/* USER CODE END SPI2_MspDeInit 0 */
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/* Peripheral clock disable */
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__HAL_RCC_SPI2_CLK_DISABLE();
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/**I2S2 GPIO Configuration
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PB4 (NJTRST) ------> I2S2_WS
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PD3 ------> I2S2_CK
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PI3 ------> I2S2_SDO
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*/
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HAL_GPIO_DeInit(GPIOB, GPIO_PIN_4);
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HAL_GPIO_DeInit(GPIOD, GPIO_PIN_3);
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HAL_GPIO_DeInit(GPIOI, GPIO_PIN_3);
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/* USER CODE BEGIN SPI2_MspDeInit 1 */
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/* USER CODE END SPI2_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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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