unable to obtain the binding of the I2C_2 bus on the asset_tracker project

[lecozahu]

Hello,

I am working on a custom NRF9160 and I am on SDK 1.3.0.
I am working on the asset_tracker project and I want to put my own accelerometer there.
To do this, I changed the accelerometer pins in the boards :

&i2c2 {
	compatible = "nordic,nrf-twim";
	status = "okay";
	sda-pin = <3>;
	scl-pin = <4>;	
};

To do this, I changed the accelerometer pins in the boards
and I added the use of i2c in prj.conf. :

# I2C
#CONFIG_I2C=y
#CONFIG_I2C_NRFX=y
#CONFIG_I2C_2=y
#CONFIG_I2C_2_NRF_TWIM=y

I also put the variable: CONFIG_ACCEL_USE_SIM = n

However, when I do device_get_binding ("I2C_2"); the variable remains null

Can someone help me?

Best regards,

Lecozahu

[Simonr]

Hi

First off, please make sure that this instance (2) is not used by any other peripherals (SPI or UART) in your project. You also need to specify the pins in an overlay file. If there's no file called nrf9160_pca10090ns.overlay in your project directory youo need to make one and set the GPIOs from there.

You can also check out the Configurations chapter (1.5) in our nRF Connect SDK tutorial where my colleague explains specifically how to configure the I2C_2 instance in an NCS project.

Best regards,

Simon