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/* ... */
#include "main.h"
Includes
USBD_HandleTypeDef USBD_Device;
Private variables
static void SystemClock_Config(void);
static void Toggle_Leds(void);
Private function prototypes
/* ... */
int main(void)
{
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
USBD_Init(&USBD_Device, &AUDIO_Desc, 0);
USBD_RegisterClass(&USBD_Device, USBD_AUDIO_CLASS);
USBD_AUDIO_RegisterInterface(&USBD_Device, &USBD_AUDIO_fops);
USBD_Start(&USBD_Device);
while (1)
{
Toggle_Leds();
}while (1) { ... }
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* ... */
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 = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
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);
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SAI_PLLI2S;
PeriphClkInitStruct.PLLI2S.PLLI2SN = 429;
PeriphClkInitStruct.PLLI2S.PLLI2SQ = 2;
PeriphClkInitStruct.PLLI2SDivQ = 19;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
}{ ... }
/* ... */
static void Toggle_Leds(void)
{
static uint32_t ticks;
if (ticks++ == 0xfffff)
{
BSP_LED_Toggle(LED1);
BSP_LED_Toggle(LED2);
BSP_LED_Toggle(LED3);
BSP_LED_Toggle(LED4);
ticks = 0;
}if (ticks++ == 0xfffff) { ... }
}{ ... }
#ifdef USE_FULL_ASSERT
/* ... */
void assert_failed(uint8_t * file, uint32_t line)
{
/* ... */
while (1)
{
}while (1) { ... }
}assert_failed (uint8_t * file, uint32_t line) { ... }
/* ... */#endifPrivate functions