TWI NRFX problem

RE: TWI NRFX problem

Ars Morozov — Mon, 12 Aug 2019 06:30:41 GMT

The problem is solved. The problem is that I call NRFX_TWI_INSTANCE instead NRFX_TWIM_INSTANCE. So, if you want use twi with dma, you should use nrfx_twim driver. It's easy to forget when you look on examples/peripheral and trying to chagne it from nrf_drv to nrfx. In sdk_config.h I've disable nrfx_twi, and left enabled only nrfx_twim and twi, use easydma. Also, I've removed nrf_twi.c from project. Anyway, can you answer on my previous questions:

[quote userid="67850" url="~/f/nordic-q-a/50797/twi-nrfx-problem/203328"]Regarding what you're are talking about file "apply_old_config.h". Do I need this file if I want to use only new drivers nrfx? If yes, so for what?[/quote]

RE: TWI NRFX problem

Ars Morozov — Fri, 09 Aug 2019 13:14:22 GMT

Hi. Thanks for the answer. It seems that I already read this thread. For me it's not clear what do you want to see from my "sdk_config.h" file. I attached full file.devzone.nordicsemi.com/.../6180.sdk_5F00_config.h
As I've showed in main post of this thread I've enabled old driver (TWI_ENABLE...) and enabled new nrfx driver (NRFX_TWI..), but NRFX_TWI_INST_ID0 still undefined.

Regarding what you're are talking about file "apply_old_config.h". Do I need this file if I want to use only new drivers nrfx? If yes, so for what?

I also want to stress, that I previously have the same problem for timer and for pwm drivers, but when I enable, together with new nrfx defines, old defines of this drivers in sdk_config.h

RE: TWI NRFX problem

Einar Thorsrud — Fri, 09 Aug 2019 12:10:42 GMT

Hi,

NRFX_TWI0_INST_IDX is made by the NRFX_TWI_INSTANCE macro based on the configuration in sdk_config.h. I cannot say for sure without knowing more about your code and your full sdk_config.h.

A typical issue if you want to use nrfx directly is that the configuration macros are being replaced by the legacy driver configuration if it is also present in sdk_config.h. (This is done by apply_old_config.h - see this thread for details). The simplest (and therefore best) solution in most cases is to use the legacy drives and the legacy driver configuration macros in sdk_config.h.

RE: TWI NRFX problem

Ars Morozov — Fri, 09 Aug 2019 06:12:23 GMT

RE: TWI NRFX problem

BinderT — Thu, 08 Aug 2019 21:47:22 GMT

This looks like a missing .h file.

Please post hole your compiler output as a code snippit. Easier to find what's missing.