I2C function sdk v1.6.0-rc2

[Fb62]

Hello,

I need to connect a custom I2C device to the nRF52-DK, and I am using the sdk v1.6.0-rc2.

I am new to this development environment and I don't know how to initialize I2C and what functions to use to write / read a register with I2C.

There is a minimal example where I can see how to initialize the i2c bus (i2c0) and what are the functions to write and read on the i2c bus.

I have seen the examples in the sdk, but I cannot understand how it works.

Thanks in advance.

[Heidi]

Hi!

Unfortunately, we don't have any official basic I2C samples available in NCS. 

But a colleague of mine has this I2C sample on his private GitHub, a simple I2C scanner for the nRF5340 DK or the nRF9160 DK. It should be easy enough to port to the nRF52 DK you are using. 

I recommend starting with taking a look at the I2C documentation available in Zephyr (see Peripherals I2C). And also take a look at how the Devicetree works (see Devicetree HOWTOs).

The functions used to configure the I2C driver.

i2c_dev = device_get_binding("I2C_1");
i2c_configure(i2c_dev, dev_config);

And then i2c_transfer() to perform the data transfer.

Best regards,

Heidi

[Fb62]

Hi,

when i call:

i2c_dev = device_get_binding("I2C_1");

I get error bindig failed.

Where are defined the device NAME?

Thanks 

Regards

Fausto