simple integration of GPIO and I2C

[purpleButterfly]

Hello,

I am currently trying to program the nRF52832 to be able to receive data from a heart rate sensor. The sensor uses I2C communication and has an additional two pins (RESET and MFIO) . The additional pins need to be toggled a certain way in order to put the sensor into application mode. 

I have been working off the example provided by the SDK called twi_sensor and have been able to write code relating to I2C. However, it appears the twi_sensor project does not have any GPIO library/files associated with it and because of this I can't access the RESET and MFIO pins.

I'm really confused as to exactly which files I should add to this project in order to gain access to the GPIO peripheral. I tried adding what I thought was the right file but then ended up going down a rabbit hole of build errors [not finding files being referenced in the one I added].

I would really appreciate some guidance.

Best.

[Jared]

Hi,

The GPIO API can be included by adding nrf_gpio.h to the project. Remember to also add the path to the project, if you use SES then watch this.

regards

Jared

[purpleButterfly]

so I added nrf_gpio.h and made sure the path was added to the project, however I can't seem to be able to enable it in the sdk_config file because it's not there at all. what should I do?

[Jared]

What error are you getting? In most cases the gpio api doesn't really require anything to be configured in the sdk config file for it work.