STM32 general timer 1s delay to realize LED flashing

stm32 There are many timers , Each timer has different functions , Today I learned how to use general timer to realize 1s Time delay , send LED Light flashing , It is summarized as follows ：

Step summary ：

Enable timer clock -> Configure timer structure -> Clear the timer flag -> Start timer interrupt -> Enable timer -> Write interrupt service function

Timer.c:

#include "Timer.h"

void TimerBase_Config(void)
{
	// Turn on the clock 
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
	// Define structure variables 
	TIM_TimeBaseInitTypeDef TimerBaseInitStructure;
	NVIC_InitTypeDef NVICInitStructure;
	// Configure timer structure 
	TimerBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
	TimerBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
	TimerBaseInitStructure.TIM_Period = 10000;
	TimerBaseInitStructure.TIM_Prescaler = 7200;
	TIM_TimeBaseInit(TIM2, &TimerBaseInitStructure);
	// Clear flag bit 
	TIM_ClearFlag(TIM2,TIM_FLAG_Update);
	// Start timer interrupt 
	TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);
	// Enable timer 
	TIM_Cmd(TIM2,ENABLE);
	// To configure NVIC Structure 
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
	NVICInitStructure.NVIC_IRQChannel = TIM2_IRQn;
	NVICInitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVICInitStructure.NVIC_IRQChannelPreemptionPriority = 1;
	NVICInitStructure.NVIC_IRQChannelSubPriority = 1;
	NVIC_Init(&NVICInitStructure);
}

stm32f103x_it.c:

void TIM2_IRQHandler(void)
{
	static uint16_t temp;
	
	if(TIM_GetITStatus(TIM2,TIM_IT_Update) != RESET)
	{
		if(temp ++ %2 == 1)
		{
			GPIO_ResetBits(LED_G_GPIO_PORT,LED_G_GPIO_PIN);
		}
		else 
		{
			GPIO_SetBits(LED_G_GPIO_PORT,LED_G_GPIO_PIN);
		}
	}
	TIM_ClearITPendingBit(TIM2,TIM_IT_Update);
}

main.c:

#include "stm32f10x.h"
#include "led.h"
#include "Timer.h"

int main(void)
{
	TimerBase_Config();
	LED_GPIO_Confing();
	GPIO_SetBits(LED_G_GPIO_PORT,LED_G_GPIO_PIN);
	while(1)
	{
	
	}
}

matters needing attention ：

Be sure to clear the flag bit , In particular, the clear flag bit in the interrupt service function , Bloggers have been checking for a long time because of this