由于对于中断的了解并不多，这里仅作相关源码（已测可用）的展示

main.c函数

#include "sys.h"
#include "delay.h"
#include "usart.h"
#include "led.h"
#include "beep.h"
#include "key.h"
#include "timer.h"
#include "FreeRTOS.h"
#include "task.h"


void start_task();
TaskHandle_t StartTask_Handler;

void interrupt_task();
TaskHandle_t InterruptTask_Handler;

int main(void)
{ 
 
  u8 key;           
	delay_init(168);  
	LED_Init();				
	KEY_Init();
	uart_init(115200);
	LED0=1;
	LED1=1;
	xTaskCreate((TaskFunction_t) start_task,
							(const char *  )  "start_task",
							(const uint16_t) 50,
							(void *        )  NULL,
							(UBaseType_t   ) 1,
							(TaskHandle_t *) &StartTask_Handler );
	
	vTaskStartScheduler() ;

}

void start_task()
{
	xTaskCreate((TaskFunction_t) interrupt_task,
							(const char *  )  "interrupt_task",
							(const uint16_t) 50,
							(void *        )  NULL,
							(UBaseType_t   ) 2,
							(TaskHandle_t *) &InterruptTask_Handler );

 vTaskDelete(NULL);
}

void interrupt_task()
{
	static u32 total_num=0;
	while(1)
	{
		total_num+=1;
		if(total_num%5==0)
		{
			printf("关闭中断");
			portDISABLE_INTERRUPTS();
			delay_ms(1000);
				printf("开启中断");
			portENABLE_INTERRUPTS();
		}
	LED0=~LED0;
	vTaskDelay(1000);
	
	}

}

timer.c文件

#include "timer.h"
#include "sys.h"
#include "led.h"
#include "usart.h"
void My_Timer_Init()
{
	TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);  
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5,ENABLE); 
	
	
  TIM_TimeBaseInitStructure.TIM_Period = 8400-1; 	
	TIM_TimeBaseInitStructure.TIM_Prescaler=5000-1;  
	TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; 
	TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1; 
	
	TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStructure);
	TIM_TimeBaseInit(TIM5,&TIM_TimeBaseInitStructure);
	
	
	TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
	TIM_Cmd(TIM3,ENABLE); 
	
	TIM_ITConfig(TIM5,TIM_IT_Update,ENABLE); 
	TIM_Cmd(TIM5,ENABLE); 
	
	
	NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; 
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x04;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x00;
	NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
	NVIC_Init(&NVIC_InitStructure);
	
	
	
	
	NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; 
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x04;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x00;
	NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
	NVIC_Init(&NVIC_InitStructure);
	
	NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; 
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x05;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x00;
	NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
	NVIC_Init(&NVIC_InitStructure);
	
	
	
}

void TIM3_IRQHandler(void)
{
	if(TIM_GetITStatus(TIM3,TIM_IT_Update)==SET) 
	{
		printf("TIM3");
	}
	TIM_ClearITPendingBit(TIM3,TIM_IT_Update);  
}


void TIM5_IRQHandler(void)
{
	if(TIM_GetITStatus(TIM3,TIM_IT_Update)==SET) 
	{
		printf("TIM5");
	}
	TIM_ClearITPendingBit(TIM3,TIM_IT_Update); 
}