the problem of NRF52810 TWIM

RE: the problem of NRF52810 TWIM

awneil — Mon, 10 Dec 2018 10:01:26 GMT

How to properly post source code - not as an image:

[quote userid="8114" url="~/f/nordic-q-a/41345/the-problem-of-nrf52810-twim"]if the length is larger than 255, the data reading is abnormal[/quote]

So have you used the debugger to step through your code and check that your handling of addresses >255 is correct?

RE: the problem of NRF52810 TWIM

Einar Thorsrud — Mon, 10 Dec 2018 08:38:34 GMT

Hi,

You should not see any limitation of 255 bytes in that case. Can you elaborate on how the transaction does not work when it exceeds 255 bytes? Also, can you double check the markings on the chip?

RE: the problem of NRF52810 TWIM

I6believe — Mon, 10 Dec 2018 01:20:55 GMT

hello,

I do not have NRF52832 for testing, and I only have NRF52810 board.

I have checked that the MCU selected is NRF52810, and is it meaning that it has nothing to do with NRF52832?

I know the RXD.MAXCNT for NRF52810 is 10 bit, but the reason is I cannot read data exceed 255, I do not know the reason. can you give me some suggestions?

thank you very much! best regards!

RE: the problem of NRF52810 TWIM

Einar Thorsrud — Fri, 07 Dec 2018 12:34:34 GMT

Hi,

Are you testing on a nRF52832? The reason I ask is that the RXD.MAXCNT register for the nRF528332 is 8 bit (maximum value 0xFF), whereas it is 10 bit for the nRF52810 (maximum value 0x3FF).