#include "CommandsDefine.h"
#include "timer.h"
#include "iwdg.h"
#include "Probe.h"
#include "usart.h"
#include "delay.h"

u8 TIM3_COUNT_DONE=0;

//////////////////////////////////////////////////////////////////////////////////

//通用定时器3中断初始化
//arr：自动重装值。
//psc：时钟预分频数
//定时器溢出时间计算方法:Tout=((arr+1)*(psc+1))/Ft us.
//Ft=定时器工作频率,单位:Mhz
//这里使用的是定时器3!
void TIM3_Int_Init(u16 arr,u16 psc)
{
    TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;

    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);  ///使能TIM3时钟

    TIM_TimeBaseInitStructure.TIM_Period = arr; 	//自动重装载值
    TIM_TimeBaseInitStructure.TIM_Prescaler=psc;  //定时器分频
    TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
    TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;

    TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStructure);//初始化TIM3

    TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE); //允许定时器3更新中断
    TIM_Cmd(TIM3,ENABLE); //使能定时器3

    NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn; //定时器3中断
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=8; //抢占优先级8
    NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x03; //子优先级3
    NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
    NVIC_Init(&NVIC_InitStructure);

}

//定时器3中断服务函数
void TIM3_IRQHandler(void)
{
    if(TIM_GetITStatus(TIM3,TIM_IT_Update)==SET) //溢出中断
    {
        
        TIM3_COUNT_DONE=1;
    }
    TIM_ClearITPendingBit(TIM3,TIM_IT_Update);  //清除中断标志位
}

