card_2.4G_compare_tools/bsp/tim.c

#include "tim.h"

//------------------------------------------------------------------
void TIM3_Int_Init(u16 arr,u16 psc)
{
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
//	NVIC_InitTypeDef NVIC_InitStructure;

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //ʱ��ʹ��
	
	//��ʱ��TIM3��ʼ��
	TIM_TimeBaseStructure.TIM_Period = arr; //��������һ�������¼�װ�����Զ���װ�ؼĴ������ڵ�ֵ	
	TIM_TimeBaseStructure.TIM_Prescaler =psc; //����������ΪTIMxʱ��Ƶ�ʳ�����Ԥ��Ƶֵ
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //����ʱ�ӷָ�:TDTS = Tck_tim
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM���ϼ���ģʽ
	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //����ָ���IJ�����ʼ��TIMx��ʱ�������λ
 
	TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //ʹ��ָ����TIM3�ж�,���������ж�

	TIM_Cmd(TIM3, ENABLE);  //ʹ��TIMx
}