S3C6410裸机定时器

 
#include 'system.h' 
#include 'timer.h' 


//定时器0中断处理程序 
void (*Timer0_Isr)(void) = NULL; 


//定时器0中断处理程序 
void (*Timer1_Isr)(void) = NULL; 




//定时器2中断处理程序 
void (*Timer2_Isr)(void) = NULL; 


 
static void __irq Isr_Timer0(void) 
{ 
rTINT_CSTAT |= BIT5; //清除中断标志 
if(Timer0_Isr != NULL) //注册过中断服务程序 
{ 
Timer0_Isr(); //调用中断处理程序 
} 
VICInterruptEnd(); //中断结束 
} 




 
void Timer0_Init(u32 RTime,FunctionalState EnInt,void (*TimerIsr)(void)) 
{ 
rTCFG0 &= (~0xff); //清除设置 
rTCFG0 |= 65; //定时器0预分频65+1,由PCLK=66提供时钟,66分频产生1MHz的定时器时钟 
rTCON &= (~0xff); //清除设置 
rTCON |= BIT3; //定时器0自动更新使能 
rTCNTB0 = RTime; //重装值 
rTINT_CSTAT |= BIT5; //清除中断标志 
rTINT_CSTAT |= (EnInt == ENABLE) ? BIT0 : 0; //使能定时器0中断 
Timer0_Isr = TimerIsr; //注册中断服务程序 
Set_IsrAddr(INT_TIMER0,(u32)Isr_Timer0); //设置中断矢量入口 
Set_IntEnable(INT_TIMER0,EnInt); //使能定时器0全局中断 
//以下操作启动定时器0 
rTCON |= BIT1; //手动更新 
rTCON &= ~BIT1; //结束手动更新 
rTCON |= BIT0; //启动定时器0 
} 








 
static void __irq Isr_Timer1(void) 
{ 
rTINT_CSTAT |= BIT6; //清除中断标志 
if(Timer1_Isr != NULL) //注册过中断服务程序 
{ 
Timer1_Isr(); //调用中断处理程序 
} 
VICInterruptEnd(); //中断结束 
} 




 
void Timer1_Init(u32 RTime,FunctionalState EnInt,void (*TimerIsr)(void)) 
{ 
rTCFG0 &= (~0xff); //清除设置 
rTCFG0 |= 65; //定时器0预分频65+1,由PCLK=66提供时钟,66分频产生1MHz的定时器时钟, 
rTCON &= (~0xff00); //清除设置 
rTCON |= BIT11; //定时器1自动更新使能 
rTCNTB1 = RTime; //重装值 
rTINT_CSTAT |= BIT6; //清除中断标志 
rTINT_CSTAT |= (EnInt == ENABLE) ? BIT1 : 0; //使能定时器0中断 
Timer1_Isr = TimerIsr; //注册中断服务程序 
Set_IsrAddr(INT_TIMER1,(u32)Isr_Timer1); //设置中断矢量入口 
Set_IntEnable(INT_TIMER1,EnInt); //使能定时器1全局中断 
//以下操作启动定时器0 
rTCON |= BIT9; //手动更新 
rTCON &= ~BIT9; //结束手动更新 
rTCON |= BIT8; //启动定时器0 
} 






 
static void __irq Isr_Timer2(void) 
{ 
rTINT_CSTAT |= BIT7; //清除中断标志 
if(Timer2_Isr != NULL) //注册过中断服务程序 
{ 
Timer2_Isr(); //调用中断处理程序 
} 
VICInterruptEnd(); //中断结束 
} 






 
void Timer2_Init(u32 RTime,FunctionalState EnInt,void (*TimerIsr)(void)) 
{ 
rTCFG0 &= ~(0xff << 8); //清除设置 
rTCFG0 |= 65 << 8; //定时器2预分频65+1,由PCLK=66提供时钟,66分频产生1MHz的定时器时钟, 
rTCON &= ~(0xf << 12); //清除设置 
rTCON |= 1 << 15; //定时器2自动更新使能 
rTCNTB2 = RTime; //重装值 
rTINT_CSTAT |= BIT7; //清除中断标志 
rTINT_CSTAT |= (EnInt == ENABLE) ? BIT2 : 0; //使能定时器2中断 
Timer2_Isr = TimerIsr; //注册中断服务程序 
Set_IsrAddr(INT_TIMER2,(u32)Isr_Timer2); //设置中断矢量入口 
Set_IntEnable(INT_TIMER2,EnInt); //使能定时器1全局中断 
//以下操作启动定时器2 
rTCON |= BIT13; //手动更新 
rTCON &= ~BIT13; //结束手动更新 
rTCON |= BIT12; //启动定时器2 
} 






 
void RunTimeInit(void) 
{ 
Timer2_Init(0xffffffff,DISABLE,NULL); 
} 






 
void RunTimeReset(void) 
{ 
rTCON &= ~BIT12; //停止定时器2 
nop;nop; 
rTCON |= BIT13; //手动更新 
rTCON &= ~BIT13; //结束手动更新 
rTCON |= BIT12; //启动定时器2 
} 






 
u32 GetRunTime(void) 
{ 
return (0xffffffff - rTCNTO2);

}

#ifndef TIMER_H_
#define TIMER_H_




void Timer0_Init(u32 RTime,FunctionalState EnInt,void (*TimerIsr)(void));//定时器0初始化函数
void Timer1_Init(u32 RTime,FunctionalState EnInt,void (*TimerIsr)(void));//定时器1初始化函数
void Timer2_Init(u32 RTime,FunctionalState EnInt,void (*TimerIsr)(void));//定时器2初始化函数




void RunTimeInit(void);//程序运行时间计算初始化
void RunTimeReset(void);//程序运行时间计算计数器复位并开始
u32 GetRunTime(void);//获取程序运行时间




#endif