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/* USER CODE BEGIN Header */
/**
******************************************************************************
* File Name : SAI.c
* Description : This file provides code for the configuration
* of the SAI instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "sai.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
SAI_HandleTypeDef hsai_BlockA1;
SAI_HandleTypeDef hsai_BlockB1;
DMA_HandleTypeDef hdma_sai1_b;
DMA_HandleTypeDef hdma_sai1_a;
/* SAI1 init function */
void MX_SAI1_Init(void)
{
/* USER CODE BEGIN SAI1_Init 0 */
/* USER CODE END SAI1_Init 0 */
/* USER CODE BEGIN SAI1_Init 1 */
/* USER CODE END SAI1_Init 1 */
/* USER CODE BEGIN SAI1_Init 1 */
/* USER CODE END SAI1_Init 1 */
hsai_BlockA1.Instance = SAI1_Block_A;
hsai_BlockA1.Init.AudioMode = SAI_MODEMASTER_TX;
hsai_BlockA1.Init.Synchro = SAI_ASYNCHRONOUS;
hsai_BlockA1.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;
hsai_BlockA1.Init.NoDivider = SAI_MCK_OVERSAMPLING_DISABLE;
hsai_BlockA1.Init.MckOverSampling = SAI_MCK_OVERSAMPLING_DISABLE;
hsai_BlockA1.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_EMPTY;
hsai_BlockA1.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_48K;
hsai_BlockA1.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
hsai_BlockA1.Init.MonoStereoMode = SAI_STEREOMODE;
hsai_BlockA1.Init.CompandingMode = SAI_NOCOMPANDING;
hsai_BlockA1.Init.TriState = SAI_OUTPUT_NOTRELEASED;
if (HAL_SAI_InitProtocol(&hsai_BlockA1, SAI_I2S_STANDARD, SAI_PROTOCOL_DATASIZE_24BIT, 2) != HAL_OK)
{
Error_Handler();
}
hsai_BlockB1.Instance = SAI1_Block_B;
hsai_BlockB1.Init.AudioMode = SAI_MODESLAVE_RX;
hsai_BlockB1.Init.Synchro = SAI_SYNCHRONOUS;
hsai_BlockB1.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;
hsai_BlockB1.Init.MckOverSampling = SAI_MCK_OVERSAMPLING_DISABLE;
hsai_BlockB1.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_EMPTY;
hsai_BlockB1.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
hsai_BlockB1.Init.MonoStereoMode = SAI_STEREOMODE;
hsai_BlockB1.Init.CompandingMode = SAI_NOCOMPANDING;
hsai_BlockB1.Init.TriState = SAI_OUTPUT_NOTRELEASED;
if (HAL_SAI_InitProtocol(&hsai_BlockB1, SAI_I2S_STANDARD, SAI_PROTOCOL_DATASIZE_24BIT, 2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SAI1_Init 2 */
/* USER CODE END SAI1_Init 2 */
}
static uint32_t SAI1_client =0;
void HAL_SAI_MspInit(SAI_HandleTypeDef* saiHandle)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* SAI1 */
if(saiHandle->Instance==SAI1_Block_A)
{
/* SAI1 clock enable */
if (SAI1_client == 0)
{
__HAL_RCC_SAI1_CLK_ENABLE();
}
SAI1_client ++;
/**SAI1_A_Block_A GPIO Configuration
PE2 ------> SAI1_MCLK_A
PE4 ------> SAI1_FS_A
PE5 ------> SAI1_SCK_A
PE6 ------> SAI1_SD_A
*/
GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF6_SAI1;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
/* Peripheral DMA init*/
hdma_sai1_a.Instance = DMA1_Stream1;
hdma_sai1_a.Init.Request = DMA_REQUEST_SAI1_A;
hdma_sai1_a.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_sai1_a.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_sai1_a.Init.MemInc = DMA_MINC_ENABLE;
hdma_sai1_a.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_sai1_a.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_sai1_a.Init.Mode = DMA_CIRCULAR;
hdma_sai1_a.Init.Priority = DMA_PRIORITY_HIGH;
hdma_sai1_a.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_sai1_a) != HAL_OK)
{
Error_Handler();
}
/* Several peripheral DMA handle pointers point to the same DMA handle.
Be aware that there is only one channel to perform all the requested DMAs. */
__HAL_LINKDMA(saiHandle,hdmarx,hdma_sai1_a);
__HAL_LINKDMA(saiHandle,hdmatx,hdma_sai1_a);
}
if(saiHandle->Instance==SAI1_Block_B)
{
/* SAI1 clock enable */
if (SAI1_client == 0)
{
__HAL_RCC_SAI1_CLK_ENABLE();
}
SAI1_client ++;
/**SAI1_B_Block_B GPIO Configuration
PE3 ------> SAI1_SD_B
*/
GPIO_InitStruct.Pin = GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF6_SAI1;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
/* Peripheral DMA init*/
hdma_sai1_b.Instance = DMA1_Stream0;
hdma_sai1_b.Init.Request = DMA_REQUEST_SAI1_B;
hdma_sai1_b.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_sai1_b.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_sai1_b.Init.MemInc = DMA_MINC_ENABLE;
hdma_sai1_b.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_sai1_b.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_sai1_b.Init.Mode = DMA_CIRCULAR;
hdma_sai1_b.Init.Priority = DMA_PRIORITY_HIGH;
hdma_sai1_b.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
if (HAL_DMA_Init(&hdma_sai1_b) != HAL_OK)
{
Error_Handler();
}
/* Several peripheral DMA handle pointers point to the same DMA handle.
Be aware that there is only one channel to perform all the requested DMAs. */
__HAL_LINKDMA(saiHandle,hdmarx,hdma_sai1_b);
__HAL_LINKDMA(saiHandle,hdmatx,hdma_sai1_b);
}
}
void HAL_SAI_MspDeInit(SAI_HandleTypeDef* saiHandle)
{
/* SAI1 */
if(saiHandle->Instance==SAI1_Block_A)
{
SAI1_client --;
if (SAI1_client == 0)
{
/* Peripheral clock disable */
__HAL_RCC_SAI1_CLK_DISABLE();
}
/**SAI1_A_Block_A GPIO Configuration
PE2 ------> SAI1_MCLK_A
PE4 ------> SAI1_FS_A
PE5 ------> SAI1_SCK_A
PE6 ------> SAI1_SD_A
*/
HAL_GPIO_DeInit(GPIOE, GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6);
HAL_DMA_DeInit(saiHandle->hdmarx);
HAL_DMA_DeInit(saiHandle->hdmatx);
}
if(saiHandle->Instance==SAI1_Block_B)
{
SAI1_client --;
if (SAI1_client == 0)
{
/* Peripheral clock disable */
__HAL_RCC_SAI1_CLK_DISABLE();
}
/**SAI1_B_Block_B GPIO Configuration
PE3 ------> SAI1_SD_B
*/
HAL_GPIO_DeInit(GPIOE, GPIO_PIN_3);
HAL_DMA_DeInit(saiHandle->hdmarx);
HAL_DMA_DeInit(saiHandle->hdmatx);
}
}
/**
* @}
*/
/**
* @}
*/
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