#include "TIM_Init.h"
#include "sys.c"

void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStructure.GPIO_Pin=GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStructure);
}

void TIM_Configuration(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
    
     RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6,ENABLE);//开启定时器的时钟使能；

TIM_TimeBaseStructure.TIM_Period=arr;//设置自动重装载寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler=psc;//设置时钟频率除数的预分频值
TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1;//设置时钟分割
TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;//TIM 向上计数
TIM_TimeBaseInit(TIM6,&TIM_TimeBaseStructure);//初始化 TIM
  TIM_ITConfig(TIM6,TIM_IT_Update,ENABLE);//允许更新中断
TIM_Cmd(TIM6,ENABLE);//使能 TIM定时器
}

void NVIC_TIM_configuration()
{
NVIC_InitTypeDef NVIC_InitStructure;
    
    #ifdef VECT_TAB_RAM
        NVIC_SetVectorTable(NVIC_VectTab_RAM,0x20000000);
    #else
        NVIC_SetVectorTable(NVIC_VectTab_FLASH,0x08000000);
    #endif
    
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel=TIM6_IRQn;//定时器中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;//先占优先级 0 级
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;//从优先级0级
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;//IRQ 通道被使能
NVIC_Init(&NVIC_InitStructure);//初始化 NVIC 寄存器
}

void TIM6_IRQHandler(void)
{
if(TIM_GetITStatus(TIM6,TIM_IT_Update)!=RESET)//检查 TIM 更新中断发生与否
{
PAout(4)=!PAout(4);//用户程序
TIM_ClearITPendingBit(TIM6,TIM_IT_Update);//清除 TIM更新中断标志
}
}