OrgST-Microelectronics/STM32CubeF7
1
0
Fork 0
mirror of https://github.com/STMicroelectronics/STM32CubeF7.git synced 2025-05-05 19:30:14 +08:00
Code Issues Releases Wiki Activity
STM32CubeF7/Projects/STM32756G_EVAL/Examples/SAI/SAI_Audio/Src/main.c
rihab kouki f8cefdf02e Release v1.16.2
2021-12-14 09:57:38 +01:00

398 lines
13 KiB
C
Raw Blame History

/**
******************************************************************************
* @file SAI/SAI_Audio/Src/main.c
* @author MCD Application Team
* @brief This example provides a description of how to configure SAI
******************************************************************************
* @attention
*
* Copyright (c) 2016 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.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F7xx_HAL_Examples
* @{
*/
/** @addtogroup SAI_Audio
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define MESSAGE1 " STM32F7xx "
#define MESSAGE2 " Device running on "
#define MESSAGE3 " STM32756G-EVAL "
/* Private typedef -----------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t uwVolume = AUDIO_DEFAULT_VOLUME;
__IO uint8_t uwPauseEnabledStatus = 0;
/* Private function prototypes -----------------------------------------------*/
static void MPU_Config(void);
static void SystemClock_Config(void);
static void CPU_CACHE_Enable(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* Configure the MPU attributes */
MPU_Config();
/* Enable the CPU Cache */
CPU_CACHE_Enable();
/* STM32F7xx HAL library initialization:
- Configure the Flash ART accelerator on ITCM interface
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization: global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 200 MHz */
SystemClock_Config();
/* -1- Initialize LEDs mounted on EVAL board */
/* Configure LED1*/
BSP_LED_Init(LED1);
/* -2- Configure User push-button in Gpio mode */
BSP_PB_Init(BUTTON_TAMPER, BUTTON_MODE_GPIO);
/* Initialize the LCD */
BSP_LCD_Init();
BSP_LCD_LayerDefaultInit(1, LCD_FB_START_ADDRESS);
BSP_LCD_SelectLayer(1);
/* Display message on EVAL LCD **********************************************/
/* Clear the LCD */
BSP_LCD_Clear(LCD_COLOR_BLUE);
/* Set the LCD Back Color */
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
/* Set the LCD Text Color */
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_DisplayStringAt(0, LINE(0), (uint8_t *)MESSAGE1, CENTER_MODE);
BSP_LCD_DisplayStringAt(0, LINE(1), (uint8_t *)MESSAGE2, CENTER_MODE);
BSP_LCD_DisplayStringAt(0, LINE(2), (uint8_t *)MESSAGE3, CENTER_MODE);
/* Turn on LEDs available on EVAL *******************************************/
BSP_LED_On(LED1);
BSP_LED_On(LED3);
BSP_LCD_SetFont(&Font16);
/* Initialize the Audio codec and all related peripherals (SAI, I2C, IOs...) */
if(BSP_AUDIO_OUT_Init(OUTPUT_DEVICE_BOTH, uwVolume, SAI_AUDIO_FREQUENCY_48K) == 0)
{
BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"====================", CENTER_MODE);
BSP_LCD_SetFont(&Font12);
BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"Short press on User button: Volume Down ", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, LINE(9), (uint8_t *)"Long press on User button: Pause/Resume", CENTER_MODE);
BSP_LCD_SetFont(&Font16);
BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"====================", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, LINE(9), (uint8_t *)" AUDIO CODEC OK ", CENTER_MODE);
}
else
{
BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)" AUDIO CODEC FAIL ", CENTER_MODE);
BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)" Try to reset board ", CENTER_MODE);
}
/*
Start playing the file from a circular buffer, once the DMA is enabled, it is
always in running state. Application has to fill the buffer with the audio data
using Transfer complete and/or half transfer complete interrupts callbacks
(EVAL_AUDIO_TransferComplete_CallBack() or EVAL_AUDIO_HalfTransfer_CallBack()...
*/
AUDIO_Start();
/* Display the state on the screen */
BSP_LCD_DisplayStringAt(0, LINE(10), (uint8_t *)" PLAYING... ", CENTER_MODE);
/* IMPORTANT:
AUDIO_Process() is called by the SysTick Handler, as it should be called
within a periodic process */
/* Infinite loop */
while(1)
{
if (BSP_PB_GetState(BUTTON_TAMPER) != RESET)
{
/* User push-button pressed, check if it is a long or a short press */
/* Insert 350 ms delay */
HAL_Delay(350);
if (BSP_PB_GetState(BUTTON_TAMPER) == RESET)
{
/* User push-button short press : Volume down */
/* Decrease volume by 15% */
if (uwVolume > 20)
{
uwVolume -= 15;
}
else
{
uwVolume = 100;
}
/* Apply the new volume to the codec */
BSP_AUDIO_OUT_SetVolume(uwVolume);
if (uwVolume > 85)
BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)" VOL: < X> ", CENTER_MODE);
else if (uwVolume > 70)
BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)" VOL: < X > ", CENTER_MODE);
else if (uwVolume > 55)
BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)" VOL: < X > ", CENTER_MODE);
else if (uwVolume > 40)
BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)" VOL: < X > ", CENTER_MODE);
else if (uwVolume > 25)
BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)" VOL: < X > ", CENTER_MODE);
else
BSP_LCD_DisplayStringAt(0, LINE(11), (uint8_t *)" VOL: <X > ", CENTER_MODE);
}
else
{
/* User push-button pressed for more then 350ms : Pause/Resume */
if (uwPauseEnabledStatus == 1)
{ /* Pause is enabled, call Resume */
BSP_AUDIO_OUT_Resume();
uwPauseEnabledStatus = 0;
BSP_LCD_DisplayStringAt(0, LINE(10), (uint8_t *)" PLAYING ... ", CENTER_MODE);
} else
{ /* Pause the playback */
BSP_AUDIO_OUT_Pause();
uwPauseEnabledStatus = 1;
BSP_LCD_DisplayStringAt(0, LINE(10), (uint8_t *)" PAUSE ... ", CENTER_MODE);
}
while (BSP_PB_GetState(BUTTON_TAMPER) != RESET);
}
}
/* Toggle LED1 */
BSP_LED_Toggle(LED1);
/* Insert 100 ms delay */
HAL_Delay(100);
}
}
/**
* @brief Manages the DMA FIFO error event.
* @param None
* @retval None
*/
void BSP_AUDIO_OUT_Error_CallBack(void)
{
/* Display message on the LCD screen */
BSP_LCD_SetBackColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(0, LINE(12), (uint8_t *)" DMA ERROR ", CENTER_MODE);
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_ClearStringLine(10);
/* Stop the program with an infinite loop */
while (1)
{}
/* could also generate a system reset to recover from the error */
/* .... */
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 200000000
* HCLK(Hz) = 200000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 25000000
* PLL_M = 25
* PLL_N = 400
* PLL_P = 2
* PLL_Q = 8
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 6
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 400;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 8;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Activate the OverDrive to reach the 200 MHz Frequency */
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_6);
if(ret != HAL_OK)
{
while(1) { ; }
}
}
/**
* @brief CPU L1-Cache enable.
* @param None
* @retval None
*/
static void CPU_CACHE_Enable(void)
{
/* Enable I-Cache */
SCB_EnableICache();
/* Enable D-Cache */
SCB_EnableDCache();
}
/**
* @brief Configure the MPU attributes
* @param None
* @retval None
*/
static void MPU_Config(void)
{
MPU_Region_InitTypeDef MPU_InitStruct;
/* Disable the MPU */
HAL_MPU_Disable();
/* Configure the MPU as Strongly ordered for not defined regions */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.BaseAddress = 0x00;
MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER0;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.SubRegionDisable = 0x87;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Configure the MPU attributes as WT for SDRAM */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.BaseAddress = 0xC0000000;
MPU_InitStruct.Size = MPU_REGION_SIZE_32MB;
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER1;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.SubRegionDisable = 0x00;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Configure the MPU attributes FMC control registers */
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.BaseAddress = 0xA0000000;
MPU_InitStruct.Size = MPU_REGION_SIZE_8KB;
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER2;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.SubRegionDisable = 0x0;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Enable the MPU */
HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}
#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 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) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
Reference in New Issue View Git Blame Copy Permalink