stm32 i2s

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

I2S_HandleTypeDef hi2s1;
DMA_HandleTypeDef hdma_spi1_tx;

/* USER CODE BEGIN PV */
uint16_t wave_table[256] = {

		   32767,33574,34381,35186,35991,36793,37593,38390,39184,39973,40759,41539,42314,43084,43847,44603,
		    45352,46094,46827,47552,48268,48975,49672,50358,51034,51698,52352,52993,53622,54238,54841,55431,
		    56008,56570,57117,57650,58168,58670,59156,59627,60081,60519,60940,61343,61730,62098,62449,62782,
		    63097,63393,63671,63930,64170,64391,64592,64775,64938,65081,65205,65309,65394,65458,65503,65528,
		    65533,65518,65483,65428,65354,65260,65146,65012,64859,64686,64494,64283,64052,63803,63534,63247,
		    62942,62618,62276,61916,61539,61144,60731,60302,59856,59394,58915,58421,57911,57385,56845,56290,
		    55721,55138,54541,53932,53309,52674,52026,51367,50697,50016,49324,48623,47912,47191,46462,45724,
		    44979,44226,43466,42700,41928,41150,40367,39579,38787,37992,37193,36392,35589,34784,33977,33170,
		    32363,31556,30749,29944,29141,28340,27541,26746,25954,25166,24383,23605,22833,22067,21307,20554,
		    19809,19071,18342,17621,16910,16209,15517,14836,14166,13507,12859,12224,11601,10992,10395,9812,
		    9243,8688,8148,7622,7112,6618,6139,5677,5231,4802,4389,3994,3617,3257,2915,2591,
		    2286,1999,1730,1481,1250,1039,847,674,521,387,273,179,105, 50, 15,  0,
		      5, 30, 75,139,224,328,452,595,758,941,1142,1363,1603,1862,2140,2436,
		    2751,3084,3435,3803,4190,4593,5014,5452,5906,6377,6863,7365,7883,8416,8963,9525,
		    10102,10692,11295,11911,12540,13181,13835,14499,15175,15861,16558,17265,17981,18706,19439,20181,
		    20930,21686,22449,23219,23994,24774,25560,26349,27143,27940,28740,29542,30347,31152,31959,32766
};
uint16_t tx_buffer[2] = { 10000, 10000 };
int cnt=0;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_I2S1_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_I2S1_Init();
  /* USER CODE BEGIN 2 */
  HAL_I2S_Transmit_DMA(&hi2s1, tx_buffer, 2);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
	/*
    cnt=(cnt+1)%256;
    tx_buffer[0] = 256*cnt;
    tx_buffer[1] = 256*cnt;
    HAL_Delay(1);
    */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief I2S1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_I2S1_Init(void)
{

  /* USER CODE BEGIN I2S1_Init 0 */

  /* USER CODE END I2S1_Init 0 */

  /* USER CODE BEGIN I2S1_Init 1 */

  /* USER CODE END I2S1_Init 1 */
  hi2s1.Instance = SPI1;
  hi2s1.Init.Mode = I2S_MODE_MASTER_TX;
  hi2s1.Init.Standard = I2S_STANDARD_MSB;
  hi2s1.Init.DataFormat = I2S_DATAFORMAT_16B;
  hi2s1.Init.MCLKOutput = I2S_MCLKOUTPUT_DISABLE;
  hi2s1.Init.AudioFreq = I2S_AUDIOFREQ_96K;
  hi2s1.Init.CPOL = I2S_CPOL_LOW;
  if (HAL_I2S_Init(&hi2s1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN I2S1_Init 2 */

  /* USER CODE END I2S1_Init 2 */

}

/**
  * Enable DMA controller clock
  */
static void MX_DMA_Init(void)
{

  /* DMA controller clock enable */
  __HAL_RCC_DMA1_CLK_ENABLE();

  /* DMA interrupt init */
  /* DMA1_Channel1_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();

/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */
void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
{


    cnt=(cnt+1)%256;
    tx_buffer[0] = 256*cnt;
    tx_buffer[1] = 256*cnt;
}

void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s)
{
	tx_buffer[1] = 256*cnt;
}
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */