NRF/NRFX TWI manager configurations & NRFX_TWI0_INST_IDX undeclared

[birdmachine]

Cheers!

I've been working to enable TWI0 for our current project, but I've been getting stuck on this compile error:

../SDK/modules/nrfx/drivers/include/nrfx_twi.h:73:35: error: 'NRFX_TWI0_INST_IDX' undeclared here (not in a function); did you mean 'NRFX_TWIM0_INST_IDX'?
     .drv_inst_idx = NRFX_CONCAT_3(NRFX_TWI, id, _INST_IDX), \

I've updated my sdk_config to enable NRFX_TWI0, and I've attempted both to enable the legacy TWI/TWI0 as well as remove them from the sdk_config completely (per a suggestion for SPI posted here devzone.nordicsemi.com/.../142936 )

Additionally I've tossed in an if else in my main.c that'll tell me at compile time if TWI0 is enabled or not (Doesn't compile with this on, but I'll uncomment it and compile to check what it can see) and so far, regardless of what I do, I end up with NRFX_TWI0_ENABLED FALSE

[Simon]

Have you tried to set TWI0_ENABLED and TWI_ENABLED to 1 (not NRFX_TWI..), I think that will solve your problem.

The reason for this is that NRFX_TWI0_ENABLED is defined as follows (in the file apply_old_config.h):

#undef NRFX_TWI0_ENABLED
#define NRFX_TWI0_ENABLED   (TWI0_ENABLED && !TWI0_USE_EASY_DMA)

Best regards, Simon

[birdmachine]

UPDATE
I get TRUE finally when I do the opposite, actually. I took another shot at purging every non-nrfx mention of TWI from the sdk_config and now it gives me both true and compiles as intended! I must have left something behind last I tried this. THANK YA'LL for the help :D !!
 

Gave it a shot with
TWI0_ENABLED 1
TWI0_USE_EASY_DMA 1
with the nrfx_twi definitions both present and completely striped from the sdk_config. Seems like it simply overwrites if it's already present/defined, but at this point I'm trying everything. Neither method fixes this unfortunately.

so nrfx_twi.c is definitely being brought in and compiled; Added  a few tests in here as well to see what's going on...
 

#if NRFX_CHECK(NRFX_TWI_ENABLED)
    #error "NRFX_TWI_ENABLED TRUE"
#else
    #error "NRFX_TWI_ENABLED FALSE"
#endif

With the above I'm getting NRFX_TWI_ENABLED FALSE on compile.
Also tried massaging that into

#if NRFX_TWI_ENABLED==0
    #error "NRFX_TWI_ENABLED FALSE"
#else
    #error "NRFX_TWI_ENABLED TRUE"
#endif

And still, FALSE.

The result's the same
No matter what I change, add, or remove, NRFX_TWI_ENABLED is 0

[Simon]

Glad to hear that you finally made it work. Please ask if you enter any more problems.

Cheers, Simon

[nikhilesh]

Hey birdmachine,

So you resolved the error?

I keep getting this error please help me

Error[Pe020]: identifier "NRFX_TWIM0_INST_IDX" is undefined 

in main.c

:(

[nikhilesh]

Hey Simon. Could you please help me?

[Simon]

Check out this answer, where I tried to explain the relation between the nrfx and the legacy API. If you are still confused, please explain what you don't understand and I will try to help.

Best regards,

Simon