Question

求高手赐教： 想做一个用CPU定时器0的中断，产生一个每隔一秒LED灯闪烁一次的程序

求高手赐教：

想做一个用CPU定时器0的中断，产生一个每隔一秒LED灯闪烁一次的程序

中断程序：

interrupt void TINT0_ISR(void) // CPU-Timer0中断函数
{
CpuTimer0.InterruptCount++;
if( CpuTimer0.InterruptCount==1)
{GpioDataRegs.GPACLEAR.bit.GPIOA0=1;}
if( CpuTimer0.InterruptCount==2)
{GpioDataRegs.GPASET.bit.GPIOA0=1;
CpuTimer0.InterruptCount=0;}
PieCtrl.PIEACK.all=PIEACK_GROUP1 ;
CpuTimer0Regs.TCR.bit.TIF=1;
CpuTimer0Regs.TCR.bit.TRB = 1;
EINT;
}

GPIO设置：
void InitGpio(void)
{
EALLOW;
GpioMuxRegs.GPAMUX.bit.PWM1_GPIOA0=0;
GpioMuxRegs.GPADIR.bit.GPIOA0=1;
GpioDataRegs.GPASET.bit.GPIOA0=1;
EDIS;
}

CPU定时器0设置：

#include "DSP28_Device.h"
struct CPUTIMER_VARS CpuTimer0;
struct CPUTIMER_VARS CpuTimer1;
struct CPUTIMER_VARS CpuTimer2;

void InitCpuTimer0(void)

{CpuTimer0.RegsAddr=&CpuTimer0Regs;
CpuTimer0Regs.PRD.all=0xFFFFFFFF;
CpuTimer0Regs.TPR.all=0;
CpuTimer0Regs.TPRH.all=0;
CpuTimer0Regs.TCR.bit.TSS=0;
CpuTimer0Regs.TCR.bit.TRB=1;
CpuTimer0.InterruptCount=0;}

void ConfigCpuTimer(struct CPUTIMER_VARS *Timer,float Freq,float Period)

{Uint32 temp;
Timer->CPUFreqInMHz=Freq;
Timer->PeriodInUSec=Period;
temp=(long)(Freq*Period);
Timer->RegsAddr->PRD.all=temp;
Timer->RegsAddr->TPR.all=0;
Timer->RegsAddr->TPRH.all=0;
Timer->RegsAddr->TCR.bit.TIF=1;
Timer->RegsAddr->TCR.bit.TSS=0;
Timer->RegsAddr->TCR.bit.TRB=1;
Timer->RegsAddr->TCR.bit.SOFT=1;
Timer->RegsAddr->TCR.bit.FREE=1;
Timer->RegsAddr->TCR.bit.TIE=1;
Timer->InterruptCount=0;}

主函数：
#include "DSP28_Device.h"
/*#include "DSP28_Globalprototypes.h"*/

void main(void)
{
InitSysCtrl(); //初始化系统函数
DINT;
IER = 0x0000; //禁止CPU中断
IFR = 0x0000;
InitPieCtrl(); //初始化PIE控制寄存器
InitPieVectTable(); //初始化PIE中断向量表
InitGpio(); //初始化Gpio口
InitPeripherals();
EALLOW; // This is needed to write to EALLOW protected registers
PieVectTable.TINT0 = &TINT0_ISR;//指定中断服务子程序
EDIS; // This is needed to disable write to EALLOW protected registers
PieCtrl.PIEIER1.bit.INTx7=1;
IER|=M_INT1;
EINT;
ERTM;
ConfigCpuTimer(&CpuTimer0,150,1000000);
StartCpuTimer0();//启动定时器0
for(;;){}
}
可是执行完为什么没有进入中断啊？灯没有反应

Answer 1

PieCtrl.PIEACK.all=PIEACK_GROUP1 ;
换为PieCtrl.PIEACK.bit.ACK1=1;

Answer 2

我最近也遇到同样的问题，CpuTimer0Regs.TIM在运行的过程中会减一，但是不会进入中断，不知道为什么，求高手指教

Answer 3

PieVectTable.XINT13= &ISRTimer1; 加这句话再试一下

Answer 4

执行语句循环,没有最终执行语句!

追问

不好意思，我还是不太清楚，想问下到底怎么能执行中断语句？
还有这样设置对吗？
CpuTimer0Regs.TCR.bit.TSS=0;
Timer->RegsAddr->TCR.bit.TSS=0