Hi,
I am using the MPC5645S. I use the channel 20 and channel 21 of the eMIOS1 with SAIC mode. Two channels register configuration and initialize are the same. but the channel 21 can capture the input frequency signal and enter the interrupt .The channel 20 can't enter the interrupt.
who can help me to solve this problem.
Thanks!
void EMIOS1Init(void)
{
EMIOS_1.MCR.B.GPRE = 255; // 64M/256=250kHz
EMIOS_1.MCR.B.GPREN = 1;
EMIOS_1.MCR.B.FRZ = 1;
}// end of EMIOS1Init
void CounterBusAInit(void)
{
EMIOS_1.CH[23].CADR.R = 0xFFFF;
EMIOS_1.CH[23].CCR.B.MODE = 0x50;
EMIOS_1.CH[23].CCR.B.BSL = 0x3;
EMIOS_1.CH[23].CCR.B.UCPRE = 0x1; // 250k/2 =125kHz
EMIOS_1.CH[23].CCR.B.UCPEN = 1;
EMIOS_1.CH[23].CCR.B.FREN = 1;
EMIOS_1.CH[23].CCR.B.FEN = 1;
}// end of CounterBusAInit
void ICInit(void)
{
UBYTE i;
SIU.PCR[PF1].R = 0x0500; // EMIOS1-20
SIU.PCR[PF3].R = 0x0500; // EMIOS1-21
EMIOS1Init();
for( i=20;i<22;i++ )
{
EMIOS_1.CH[i].CCR.B.MODE = 0x02; // SAIC mode
EMIOS_1.CH[i].CCR.B.BSL = 0x00;
EMIOS_1.CH[i].CCR.B.IF = 0x02;
EMIOS_1.CH[i].CCR.B.FCK = 1;
EMIOS_1.CH[i].CCR.B.FEN = 1;
EMIOS_1.CH[i].CCR.B.DMA = 0;
EMIOS_1.CH[i].CCR.B.EDSEL = 0;
EMIOS_1.CH[i].CCR.B.EDPOL = 1;
EMIOS_1.CH[i].CCR.B.UCPRE = 0;
EMIOS_1.CH[i].CCR.B.UCPEN = 1;
EMIOS_1.CH[i].CCR.B.FREN = 1;
}
CounterBusAInit();
INTC_InstallINTCInterruptHandler(ISR_SAIC20,169,3);
INTC_InstallINTCInterruptHandler(ISR_SAIC21,170,3);
INTC_InstallINTCInterruptHandler(ISR_EMIOS123OVFL,172,3);
}// end of ICInit
