AUDIO_Standalone
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Outline
Includes
#include "main.h"
Private variables
USBD_Device
Private function prototypes
Private functions
main()
SystemClock_Config()
Files
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SourceVuSTM32 Libraries and SamplesAUDIO_StandaloneSrc/main.c
 
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/** ****************************************************************************** * @file USB_Device/AUDIO_Standalone/Src/main.c * @author MCD Application Team * @brief USB device AUDIO demo main file ****************************************************************************** * @attention * * Copyright (c) 2017 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" Includes /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ USBD_HandleTypeDef USBD_Device; Private variables /* Private function prototypes -----------------------------------------------*/ static void SystemClock_Config(void); Private function prototypes /* Private functions ---------------------------------------------------------*/ /** * @brief Main program * @param None * @retval None *//* ... */ int main(void) { /* STM32F4xx HAL library initialization: - Configure the Flash prefetch, instruction and Data caches - Configure the Systick to generate an interrupt each 1 msec - Set NVIC Group Priority to 4 - Global MSP (MCU Support Package) initialization *//* ... */ HAL_Init(); /* Configure the system clock to 168 MHz */ SystemClock_Config(); /* Init Device Library */ USBD_Init(&USBD_Device, &AUDIO_Desc, 0); /* Add Supported Class */ USBD_RegisterClass(&USBD_Device, USBD_AUDIO_CLASS); /* Add Interface callbacks for AUDIO Class */ USBD_AUDIO_RegisterInterface(&USBD_Device, &USBD_AUDIO_fops); /* Start Device Process */ USBD_Start(&USBD_Device); /* Run Application (Interrupt mode) */ while (1) { }while (1) { ... } }{ ... } /** * @brief System Clock Configuration * The system Clock is configured as follow : * System Clock source = PLL (HSE) * SYSCLK(Hz) = 168000000 * HCLK(Hz) = 168000000 * AHB Prescaler = 1 * APB1 Prescaler = 4 * APB2 Prescaler = 2 * HSE Frequency(Hz) = 25000000 * PLL_M = 25 * PLL_N = 336 * PLL_P = 2 * PLL_Q = 7 * VDD(V) = 3.3 * Main regulator output voltage = Scale1 mode * Flash Latency(WS) = 5 * @param None * @retval None *//* ... */ static void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; /* Enable Power Control clock */ __HAL_RCC_PWR_CLK_ENABLE(); /* The voltage scaling allows optimizing the power consumption when the device is clocked below the maximum system frequency, to update the voltage scaling value regarding system frequency refer to product datasheet. *//* ... */ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); /* Configure RCC Oscillators: All parameters can be changed according to user�s needs */ 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 = 336; RCC_OscInitStruct.PLL.PLLP = 2; RCC_OscInitStruct.PLL.PLLQ = 7; HAL_RCC_OscConfig (&RCC_OscInitStruct); /* RCC Clocks: All parameters can be changed according to user�s needs */ 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; HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5); /* STM32F405x/407x/415x/417x Revision Z and upper devices: prefetch is supported */ if (HAL_GetREVID() >= 0x1001) { /* Enable the Flash prefetch */ __HAL_FLASH_PREFETCH_BUFFER_ENABLE(); }if (HAL_GetREVID() >= 0x1001) { ... } }{ ... } #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) { }while (1) { ... } }assert_failed (uint8_t* file, uint32_t line) { ... } /* ... */#endifPrivate functions
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