MSP430FR2433: RTC RTCMOD Value

Hi

See the RTC housekeeping example.

https://dev.ti.com/tirex/explore/node?node=AIkbD6l-7068oSzpZLj6Zw__IOGqZri__LATEST&search=Housekeeping

ok Allen, i will go through and let u know

hi Allen,

Thankyou so much. i understood bit better, but for my confirmation iam asking this question.

like 

  // Configure RTC
RTCMOD = 16000-1; // RTC count re-load compare value at SMCLK/1000 for ~1s interrupt
RTCCTL = RTCSS__SMCLK | RTCSR | // Clock source = SMCLK; Real-time software reset
RTCPS__1000 | RTCIE; // Pre-divide by 1000; Enable RTC interrupts

in the above configuration, if i want to set the RTC for 100ms , i need to assign RTCMOD with 1600-1 ri8

Please tell me , is my understanding is correct/not?

Allen one more doubt,

can i configure like below

/*this is for 1 sec*/

RTCMOD = 32768-1; 

RTCCTL = RTCSS__XT1CLK | RTCSR | RTCPS__1 | RTCIE;

can i give RTCSS__XT1CLK and RTCPS__1 like this combination?

/*this is for 1ms*/

RTCMOD = 32.768-1;  /*for 1sec we are giving 32768 so 1ms r we need to give 32.768*/ 

RTCCTL = RTCSS__XT1CLK | RTCSR | RTCPS__1 | RTCIE;

Please correct me.. i think im wrong when it came to milliseconds

Hi 

You are right. The interval is depend on your CLOCK selection and the RTCMOD setting. Notice that the value in RTCMOD is an int type. You can give 33 to this register and it will give you ~1ms interval.