Configuring TWIS

RE: Configuring TWIS

Gerber — Wed, 22 May 2019 22:21:07 GMT

Edvin,

It is working now. Thanks for looking at my file.

RE: Configuring TWIS

Edvin — Wed, 22 May 2019 06:31:46 GMT

Ok. So since you do not have TWIS_ENABLED, the apply_old_config.h will not overwrite the NRFX_TWIS defines in sdk_config.h. That is good.

So is your TWIS working as you intend to?

RE: Configuring TWIS

Gerber — Tue, 21 May 2019 22:58:34 GMT

devzone.nordicsemi.com/.../5584.sdk_5F00_config.h

Here is my sdk_config.h file.

Thank you in advance.

RE: Configuring TWIS

Edvin — Tue, 21 May 2019 07:22:58 GMT

[quote user="Gerber"]When I examine apply_old_config.h, most of the code under the TWI and TWIS sections is greyed out. Does mean I failed to configure the TWIS peripheral correctly?[/quote]

No. It either means that TWI is not defined, but you have the NRFX_TWI defines instead, or it could simply be an IDE bug.

What I meant to highlight is that whether you use the NRFX defines or the "old " defines (the old names), it will use the nrfx drivers either way, as long as you use one of the latest SDKs.

If you are in doubt, I can take a look at your sdk_config.h. But as long as the peripheral works, it is using the nrfx drivers.

RE: Configuring TWIS

Gerber — Tue, 21 May 2019 04:24:17 GMT

Hello Edwin,

The example I was referring to is "twi_master_with_twis_slave."

When I examine apply_old_config.h, most of the code under the TWI and TWIS sections is greyed out. Does mean I failed to configure the TWIS peripheral correctly?

RE: Configuring TWIS

Edvin — Mon, 20 May 2019 13:04:37 GMT

Hello,

I am sorry. We don't have step by step guides for all of our peripherals, but the examples typically is a good starting point to getting started.

[quote user=""]I've tried to source some of the code from the master/slave example in the peripheral examples folder. However, this code is configured using the older NRF_DRV directives. [/quote]

What example is that? The spis example? It doesn't use the old drivers. They actually use the nrfx drivers, but they typically use a wrapper (the non-nrfx names). I believe this is only for backwards compatibility.

Take the spis example, you can see that from main() it calls:

nrf_drv_spis_init() -> nrfx_spis_init()

You can of course skip the wrappers if you want to.

One thing to be aware of when you configure the sdk_config.h defines is that there is a file called apply_old_config.h. This can cause some confusion if you have both the old driver defines, and the new NRFX defines defined differently. Take a look in that file, apply_old_config.h, and you will understand.

Best regards,

Edvin