HOW TO IMPLEMENT I2C WITH NRF PRODUCT

[overflow]

Hello, I have an aht20 sensor from adafruit and an rtc ds3221, the 2 sensors are i2c, except that I am taking this course academy.nordicsemi.com/.../, but the course in question they used a shield for i2c communication, already for me I don't think it was the best example,  can you help me? Thanks. 

[overflow]

Hi, I relied on the datasheet of the soc nrf5340, what I can see is that the pins from 0 to 31 of port 0 and 1 can be configured for by the psel register in order to select the sda   and the scl?  I came across this code on github https://github.com/crfosse/ncs_projects/tree/main/peripheral_zephyr/i2c  where it scanned the i2c devices, I configured pins 2 for the sda   and 1 for the scl as you can see in my overlay, but I can't see the devices, I  I'm new, maybe I'm having trouble, I hope I can find a solution, you have the screenshots with the result in terminal.

datasheet

i2c devices scan code

overlay DT

Terminal

[overflow]

I found the solution, thanks to open my eyes, all was in the course. I found the address(0x38) for  the adafruit aht20 TH and I changed  my overlay fil to be like this 

&i2c1 {

    mysensor: mysensor@038{

        compatible = "i2c-device";

        status = "okay";

        reg = < 0x38 >;

    };

};

After that my terminal show this "I2C bus i2c@9000 with address Ox38 is ready!" ;)

[AHaug]

That also works

In this case VDD becomes 3.6V, which is also maximum for IOVDD on the 7002

Kind regards,
Andreas

[overflow]

Alright, all things work now, problem slove. 

Thank you! 

[AHaug]

Happy to hear that! 

I will be closing this case now :) Please feel free to open a new one if you have new questions
Kind regards,
Andreas

[Obaid Mufiz]

Hello there,
I'm in a bit of a similar situation.
I'm trying to integrate LIS2dw12 accelerometer with nrf7002dk.
Can you tell me what finally worked in your case?

Thanks & Regards,

Obaid

[overflow]

What's the problem you're facing?

I think, for my case, I wasn't able to find my i2c address, the problem was input voltage was not enough for my i2c device, that's all. 

[Obaid Mufiz]

So for starters, I tried using the same code you linked above & in that I don't see any overlay file for nrf7002dk. So I made one myself with the content you had provided in your overlay file screenshot.
But when I build the application its throwing error: FATAL ERROR: command exited with status 1: 'C:\ncs\toolchains\ce3b5ff664\opt\bin\cmake.EXE' -DWEST_PYTHON=C:/ncs/toolchains/ce3b5ff664/opt/bin/python.exe '-Bc:\Users\FCI\Desktop\i2c\build' -GNinja -DBOARD=nrf7002dk/nrf5340/cpuapp -DNCS_TOOLCHAIN_VERSION=NONE -DCONF_FILE=prj.conf '-Sc:\Users\FCI\Desktop\i2c'

I've setup everything very similar to yours.