How do I program the nrf9160 to communicate with a peripheral using SPI, I2C, other serial protocol, etc?

[duser]

Are there example scripts to take readings or communicate with other devices over serial? Like, if I attach a temperature sensor, distance sensor, etc, I want to read from it and then communicate the reading up using LTE network. Ideally I wouldn't have to use the 528xx chip and would do it all on the 9160 module but I will take any solutions at this point of the project.

[duser]

Looks like someone is trying to bring in an external sensor here but this looks pretty deep (I.e. not at API level). Still, anybody know about this joakim_tosteberg ?

[Martin Lesund]

Hi Duser,

If you want to add a peripheral to use with your nrf91DK: 

One option is to:

You add an .overlay file in the application folder (where the applications CMakeLists.txt is located). And when using the nrf91DK you call this file "nrf9160_pca10090.overlay".

In this file you add what pins you would like to use for the peripherals.

ex. to activate TWI

- add this to the .overlay file

&i2c2 {
	status = "ok";
	sda-pin = <11>;
	scl-pin = <12>;
	clock-frequency = <I2C_BITRATE_STANDARD>; 
};

- Activate the TWI in the prj.conf file (same as ninja menuconfig or the settings in SES)

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

[Yusuke]

Hi, Martin.

I have been trying to use I2C in nRF9160 DK but it doesn't work. Could you help me?

my post is here.

https://devzone.nordicsemi.com/f/nordic-q-a/45265/trouble-twi-i2c-stops-at-the-function-of-i2c_reg_read_byte-on-nrf9160-dk-why