PCA21125 RTC communicate problem

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PCA21125 RTC communicate problem

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supra0309
Contributor I

Hi :

I need some help, I'm using PCA21125 to complete RTC function. I'm able to get communication between 5746R and PCA21125, but the problem is I don't get expected output.

When sended command in 0x92 to get data from second to year as spec described with different methods(fig1~2), I did get something. After compared with spec's data, the item "month" showed 0x00(fig3 showed same result), other items showed "normal" value what if I did right operation to PCA21125, please help me to figure out this problem, thanks.

BR, Xantia 

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PetrS
NXP TechSupport
NXP TechSupport

Hi,

can you give Rxbfr[] value after all bytes are read in one frame (seconds to year)?
Note Rxbfr should hold RTC_COMM_FRAME_SIZE_BYTES bytes. 

BR, Petr

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