TI例程中进不去CAP中断怎么回事啊

1万 · 2019-7-29 23:48

TI例程中进不去CAP中断怎么回事啊

1万 · 2019-7-29 23:50

标准的TI例程中，设置用CAP4、CAP5中断处理霍尔信号，有刷电机，里面装的是HALL传感器用于计算转速
主函数定义了
interrupt void CAPINT4_ISR(void);
PieVectTable.CAPINT4 = &CAPINT4_ISR;
PieCtrlRegs.PIEIER5.bit.INTx5 = 1;//CAP4INT Enable
IER |= M_INT5;
初始化EV中CAP，这里调用的是初始化函数以及参与计算的read函数
void
F281X_EV2_CAP_Init(CAPTURE *p)
{

EvbRegs.CAPCONB.all = CAP_INIT_STATE;

EvbRegs.T4CON.all = TIMER_INIT_STATE;

EvbRegs.T4PR = 0x7FFF;

EvbRegs.CAPFIFOB.bit.CAP4FIFO = 0x01;

EvbRegs.EVBIFRC.bit.CAP4INT = 1;

EvbRegs.EVBIMRC.bit.CAP4INT = 1;

EALLOW;

GpioMuxRegs.GPBMUX.all |= 0x0700;

EDIS;

}

Uint16 F281X_EV2_CAP_Read(CAPTURE *p)
{

if((EvbRegs.CAPFIFOB.all & 0x0100) != 0)

{

p->TimeStamp = EvbRegs.CAP4FIFO;

return(0);

}

else

{

return(1);

}
}

测试是否进入中断的函数
#if (DSP_TARGET==F2812)
interrupt void CAPINT4_ISR(void)
{

flag_HALLspeed++;
cap1.read(&cap1);

EvbRegs.CAPFIFOB.bit.CAP4FIFO = 0x01;

EvbRegs.EVBIFRC.bit.CAP4INT = 0x1;

EvbRegs.EVBIMRC.bit.CAP4INT = 0x1;
PieCtrlRegs.PIEACK.all |= PIEACK_GROUP5;

EINT;
}
#endif
测试的结果是一直没有进入中断，
if((EvbRegs.CAPFIFOB.all & 0x0100) != 0)

{

p->TimeStamp = EvbRegs.CAP4FIFO;

return(0);

}
上面这段程序一直没有执行