中颖TIM4定时初始化

1万 · 2024-6-6 10:33

//==timer4 define=====
#define TIM4_DIV1      0X00
#define TIM4_DIV8 0X01
#define TIM4_DIV64    0X02
#define TIM4_DIV256 0X03

#define Timer4_Cnt_Enb Bank1;T4CON |= (1<<1) //允许计数
#define Timer4_Cnt_Dis Bank1;T4CON &= ~(1<<1)

#define Timer4_IEN_Enb Bank0;IEN1 |= (1<<1) //中断使能
#define Timer4_IEN_Dis Bank0;IEN1 &= ~(1<<1)

#define TIMER4_ENB    1
#define TIMER4_DIS    0

void Init_Timer4(uint16 Tcon,uint8 Pscr)
{
Bank1;
T4CON = 0X00 ;
T4CON |= (Pscr<<4) ;

TL4 = (65536-Tcon)%256 ;
TH4 = (65536-Tcon)/256 ;//初始化计数器值

SWTHL &= ~(1<<1) ; //读TH4 TL4时返回它的计数值
Bank0;

}

void Timer4_Enb(uint8 EN)
{
if(EN == TIMER4_ENB)
{
Bank1;
T4CON |= (1<<1) ; //开T4计数
Bank0;
IEN1 |= (1<<6) ; //开T4中断
}
else
{
Bank1;
T4CON &= ~(1<<1) ;
Bank0;
IEN1 &= ~(1<<6) ;
}
}
//系统时钟12M 定时100us 的中断
Init_Timer4(1200,TIM4_DIV1);
Timer4_Enb(TIMER4_ENB);

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原文链接：https://blog.csdn.net/chuangwu2009/article/details/29591691