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/* ... */
#include "main.h"
/* ... */
/* ... */
Includes
static WWDG_HandleTypeDef WwdgHandle;
Private variables
static uint32_t TimeoutCalculation(uint32_t timevalue);
static void SystemClock_Config(void);
static void Error_Handler(void);
Private function prototypes
/* ... */
int main(void)
{
uint32_t delay;
/* ... */
HAL_Init();
SystemClock_Config();
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
if (__HAL_RCC_GET_FLAG(RCC_FLAG_WWDGRST) != RESET)
{
BSP_LED_On(LED1);
HAL_Delay(4000);
BSP_LED_Off(LED1);
}if (__HAL_RCC_GET_FLAG(RCC_FLAG_WWDGRST) != RESET) { ... }
__HAL_RCC_CLEAR_RESET_FLAGS();
BSP_PB_Init(BUTTON_USER, BUTTON_MODE_EXTI);
/* ... */
WwdgHandle.Instance = WWDG;
WwdgHandle.Init.Prescaler = WWDG_PRESCALER_8;
WwdgHandle.Init.Window = 0x50;
WwdgHandle.Init.Counter = 0x7F;
WwdgHandle.Init.EWIMode = WWDG_EWI_DISABLE;
if (HAL_WWDG_Init(&WwdgHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_WWDG_Init(&WwdgHandle) != HAL_OK) { ... }
delay = TimeoutCalculation((WwdgHandle.Init.Counter-WwdgHandle.Init.Window) + 1) + 1;
while (1)
{
BSP_LED_Toggle(LED2);
HAL_Delay(delay);
if (HAL_WWDG_Refresh(&WwdgHandle) != HAL_OK)
{
Error_Handler();
}if (HAL_WWDG_Refresh(&WwdgHandle) != HAL_OK) { ... }
}while (1) { ... }
}{ ... }
/* ... */
static uint32_t TimeoutCalculation(uint32_t timevalue)
{
uint32_t timeoutvalue = 0;
uint32_t pclk1 = 0;
uint32_t wdgtb = 0;
pclk1 = HAL_RCC_GetPCLK1Freq();
wdgtb = (1 << ((WwdgHandle.Init.Prescaler) >> 7));
timeoutvalue = ((4096 * wdgtb * timevalue) / (pclk1 / 1000));
return timeoutvalue;
}{ ... }
/* ... */
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
__HAL_RCC_PWR_CLK_ENABLE();
/* ... */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 200;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 2;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
/* ... */
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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3);
if(ret != HAL_OK)
{
while(1) { ; }
}if (ret != HAL_OK) { ... }
}{ ... }
/* ... */
static void Error_Handler(void)
{
BSP_LED_On(LED3);
while(1)
{
}while (1) { ... }
}{ ... }
#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) { ... }
/* ... */#endif
/* ... */
/* ... */