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RTCC in PIC32 is not working

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saraaj100

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I am Using custom designed PIC32MX460F512L microcontroller board.. it seems to be working perfectly will all other programs. But when i tried to include RTCC module it doesnt work.
I used 32.768khz in SOSCO-SOSCI pin, with 10pF Capacitor soldered.
I tried all configuaraion settings With the DATASHEET.

while(RtccGetClkStat()!=RTCC_CLK_ON);
it does not pass this line of program.

I dont know how to check in the hardware, i.e. 32.768khz is working or not.

Thanks in advance.
 

Check the XTAL_OUT to XTAL_In for 32.XX KHz on the oscilloscope. Normally Crystals will not go bad such easily. Have you checked the battery connection to the Clock controller ? Check the battery power too
 

Hi,

Thank you very much for your answer.

Currently i dont have oscilloscope. According your reply hardware XTAL seems to be the problem. So I will get crystal from CITIZEN make, with the load capacitor they have mentioned in the datasheet.
But I cant get clear, where this battery comes out. I dont connect any battery to my PIC32. I just using DC Power supply with 3.3V regulator.
 

Normally RTC will be powered by a standalone- all time running power such as a battery so that they are independent of Board's power supply. This is to ensure that the RTC will keep operating even if there is a failure in Board power supply. This is the reason you see a Coin battery on PC mother boards, telecom blades etc,
 

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