请帮我写一份stm32f407TIM8定时中断代码

好的，以下是一份基本的stm32f407TIM8定时中断代码：

#include "stm32f4xx.h"

void TIM8_IRQHandler(void)
{
if (TIM_GetITStatus(TIM8, TIM_IT_Update) != RESET)
{
// 在这里写中断处理代码
TIM_ClearITPendingBit(TIM8, TIM_IT_Update);
}
}

int main(void)
{
// 初始化TIM8
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructure.TIM_Period = 1000; // 定时器周期为1秒
TIM_TimeBaseStructure.TIM_Prescaler = 8400; // 预分频系数为8400
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);

// 使能TIM8中断
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = TIM8_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

// 启动TIM8
TIM_Cmd(TIM8, ENABLE);

while (1)
{
// 在这里写主程序代码
}
}

希望对你有帮助！