NRF52: Legacy TWI Driver not linking on SDK15 (undefined reference)

RE: NRF52: Legacy TWI Driver not linking on SDK15 (undefined reference)

RVM — Tue, 21 Jan 2020 22:19:53 GMT

I don't get it. The original poster says in his opening line:

"I am trying to use the Legacy TWI Driver in SDK 15."

Why are you proposing to add the newer (NRFX) drivers to the project build?

RE: NRF52: Legacy TWI Driver not linking on SDK15 (undefined reference)

haxxa — Mon, 14 Jan 2019 14:06:15 GMT

Based on your guidance, I investigated further and realised my preprocessor directories were inconsistent. I have now got it working. I really should have picked up on this. Sometimes it's the really basic errors you overlook.

Thanks for your help.

RE: NRF52: Legacy TWI Driver not linking on SDK15 (undefined reference)

Jørgen Holmefjord — Mon, 14 Jan 2019 13:45:20 GMT

Hi,

Did you include the source files in your project? Note that you need to add the following files to you project, in addition to enable the modules in sdk_config.h:

integration\nrfx\legacy\nrf_drv_twi.c
modules\nrfx\drivers\src\nrfx_twi.c / nrfx_twim.c

Best regards,
Jørgen