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sai.c
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143
sai.c
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/**
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******************************************************************************
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* File Name : SAI.c
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* Description : This file provides code for the configuration
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* of the SAI instances.
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******************************************************************************
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** This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* COPYRIGHT(c) 2018 STMicroelectronics
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "sai.h"
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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SAI_HandleTypeDef hsai_BlockA2;
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/* SAI2 init function */
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void MX_SAI2_Init(void)
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{
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hsai_BlockA2.Instance = SAI2_Block_A;
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hsai_BlockA2.Init.AudioMode = SAI_MODEMASTER_TX;
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hsai_BlockA2.Init.Synchro = SAI_ASYNCHRONOUS;
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hsai_BlockA2.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;
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hsai_BlockA2.Init.NoDivider = SAI_MASTERDIVIDER_ENABLE;
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hsai_BlockA2.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_EMPTY;
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hsai_BlockA2.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_8K;
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hsai_BlockA2.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
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hsai_BlockA2.Init.MonoStereoMode = SAI_STEREOMODE;
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hsai_BlockA2.Init.CompandingMode = SAI_NOCOMPANDING;
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hsai_BlockA2.Init.TriState = SAI_OUTPUT_NOTRELEASED;
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if (HAL_SAI_InitProtocol(&hsai_BlockA2, SAI_I2S_STANDARD, SAI_PROTOCOL_DATASIZE_16BIT, 2) != HAL_OK)
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{
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for(;;){}
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}
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}
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static uint32_t SAI2_client =0;
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void HAL_SAI_MspInit(SAI_HandleTypeDef* hsai)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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/* SAI2 */
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if(hsai->Instance==SAI2_Block_A)
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{
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/* SAI2 clock enable */
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if (SAI2_client == 0)
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{
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__HAL_RCC_SAI2_CLK_ENABLE();
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}
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SAI2_client ++;
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/**SAI2_A_Block_A GPIO Configuration
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PE0 ------> SAI2_MCLK_A
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PI5 ------> SAI2_SCK_A
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PI7 ------> SAI2_FS_A
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PI6 ------> SAI2_SD_A
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*/
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GPIO_InitStruct.Pin = GPIO_PIN_0;
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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_AF10_SAI2;
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HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
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GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_7|GPIO_PIN_6;
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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_AF10_SAI2;
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HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
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}
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}
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void HAL_SAI_MspDeInit(SAI_HandleTypeDef* hsai)
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{
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/* SAI2 */
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if(hsai->Instance==SAI2_Block_A)
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{
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SAI2_client --;
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if (SAI2_client == 0)
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{
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/* Peripheral clock disable */
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__HAL_RCC_SAI2_CLK_DISABLE();
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}
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/**SAI2_A_Block_A GPIO Configuration
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PE0 ------> SAI2_MCLK_A
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PI5 ------> SAI2_SCK_A
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PI7 ------> SAI2_FS_A
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PI6 ------> SAI2_SD_A
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*/
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HAL_GPIO_DeInit(GPIOE, GPIO_PIN_0);
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HAL_GPIO_DeInit(GPIOI, GPIO_PIN_5|GPIO_PIN_7|GPIO_PIN_6);
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}
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}
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/**
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* @}
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*/
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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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