I am using SPC560B microcontroller, I want to program in such a way that the module should produce a wakeup interrupt ever 0.1S once. What is the value to be loaded in RTCVAL field in the RTCC register for 0.1s interrupt.
I have used a clock source of 128KHZ. So, to get the 0.1s interrupt the RTCVAL loaded 12800
void ConfigureWKPU(void) {
/* Enable WKPU PCTL */
SPCSetPeripheralClockMode(69,
SPC5_ME_PCTL_RUN(2) | SPC5_ME_PCTL_LP(3));
INTC_PSR(46) = 7;
WKUP.WRER.R = (1U << 1); // enable wakeup pin of:\n
WKUP.WIREER.R = (1U << 1); // enable rising edge interrupt
WKUP.WISR.R = 0xFFFFFFFFU; // clear interrupt flags that an external rs
WKUP.IRER.R=0xFFFFFFFFU;
WKUP.WIPUER.R=0xFFFFFFFFU;
}
void ConfigureAPI(void){
/* Enable RTC */
SPCSetPeripheralClockMode(91,
SPC5_ME_PCTL_RUN(2) | SPC5_ME_PCTL_LP(3));
RTC.RTCC.B.CNTEN =0U ; //counter reset and stop
RTC.RTCS.B.RTCF=1U;
RTC.RTCC.B.CLKSEL = 1U ; //selected the 128Khz clock source
RTC.RTCC.B.DIV32EN= 0U; //Divide clock for 32 is not used
RTC.RTCC.B.DIV512EN = 0U; //divide clock for 512
RTC.RTCC.B.RTCVAL=(uint16_t)(12800); //=12.8K/128KHz=0.1 sec*
RTC.RTCC.B.RTCIE=1U;
}
But the interrupt is not hitting the ISR. Can u help in getting the issue solved.
Thanks
