No I2C traffic on P0.08 and P0.09 on nRF91 DK

RE: No I2C traffic on P0.08 and P0.09 on nRF91 DK

RonanB96 — Fri, 23 Aug 2019 15:08:34 GMT

Sorry about the delay, I don't have anything running on the nrf52, I got my hands on a full schematic and see that the nrf52 could be holding those two pins high through U9. I haven't got the chance to test switching those two pins to inputs on the nrf52 on the dev board but this ticket can be closed

RE: No I2C traffic on P0.08 and P0.09 on nRF91 DK

Amanda Hsieh — Wed, 14 Aug 2019 12:33:44 GMT

What are you running on the nrf52840? The different options that you can change in the board controller can be seen in the Kconfig file to the nrf52840_pca10090.

You might need to add the following and rebuild the board controller to route the pins.

CONFIG_BOARD_PCA10090_SWITCH0_ARDUINO=y
CONFIG_BOARD_PCA10090_SWITCH1_ARDUINO=y

-Amanda H.

RE: No I2C traffic on P0.08 and P0.09 on nRF91 DK

RonanB96 — Wed, 14 Aug 2019 08:34:18 GMT

I have received my PCBs and the I2C does work on these pins but on the dev board, from looking at the schematic, there should be no issue if I have switch 1 and 2 switched to NC I would've thought?

RE: No I2C traffic on P0.08 and P0.09 on nRF91 DK

Amanda Hsieh — Fri, 09 Aug 2019 13:19:15 GMT

Hi Ronan,

As you can see here:
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf91_dk%2FUG%2Fnrf91_DK%2Fhw_buttons_leds.html&anchor=hw_buttons_leds

P0.08 and P0.09 are connected to Switch1/Switch2.

Please use other pins for I2C.

-Amanda H.