Is it possible to use internal pull-up/pull-down resistors with I2C, UART, etc?

[nategreco]

I need pull-up/pull-down resistors on my UART and I2C lines and am wondering if I can enable the pull-up/pull-down resistors instead.  If this possible?  I can see how to configure them for GPIO, but I'm wondering if I use the same approach if it would interfere with the UART/I2C drivers.  Thanks

Other info:
nRF52480

nRF Connect SDK v2.1.0

[Håkon Alseth]

Hi,

 

I would recommend that you continue in the thread that you linked to. Use a logic analyzer to see how the SDA/SCL lines behave when trying to communicate.

 

Kind regards,

Håkon

[Lasto]

Thank you. Will do both. I just wanted to verify that GPIO pull-up resistors' configurations are not the culprit.

[kpTTT]

both of these links seem to be expired, as of sdk version 2.4.0, is there any way to set bias-pull-up for i2c?

[Håkon Alseth]

Syntax hasn't changed for newer versions of ncs. You can address this in pinctrl DT with for instance "bias-pull-up;"

[kpTTT]

i add it to my group like the commented out section //bias-pull-up; above and it does nothing. my ide says that Property [bias-pull-up;] not mentioned in "nordic,nrf-pinctrl:child:child"