nrf9160 i2c2 can't be used.

RE: nrf9160 i2c2 can't be used.

user2115 — Tue, 24 May 2022 07:20:05 GMT

Hi,

I took your build/zephyr/merged.hex file (ie. the one you compiled) and it also worked on the DK. I can see the same trace as posted below.

Could you take a multimeter and check the voltage on the P0.30/P0.31 pins and see if it's at VDD level? Note that this will follow your VDD_IO settings (ie. the switch in the lower left corner, where you can set either 1.8V or 3V).

Is your logic analyzer with a logic level of 3V? If so, try to adjust this to 1.8V in the PC application.

Kind regards,

Håkon

RE: nrf9160 i2c2 can't be used.

user73478 — Mon, 23 May 2022 15:56:22 GMT

Hi Håkon:

I'm connected to GND.

RE: nrf9160 i2c2 can't be used.

user2115 — Mon, 23 May 2022 12:18:40 GMT

Hi,

I tried your example, and it seems to run as expected. I see this waveform in the beginning:

And since I do not have this sensor myself, it does not go further (ie. no ACK).

[quote user=""]But its output is like this:[/quote]

this output looks very strange.

Did you connect GND?

Kind regards,

Håkon