How to connect temperature sensor to NRF52832 via i2c

[asabuncuoglu13]

Hello,

Here is a newbie question:

I have NRF52832 (sparkfun breakout board) and ADT7410 temperature sensor and, I want to create a data logger. But, i could not understand how to use i2c interface. I think we will assign the pins manually, but I could not understand how to assign them or use them.

Thank you for your help

[Jørn]

Hello asabuncuoglu13

You can find examples of how to use the I2C by looking at the TWI examples that comes with the SDK. You can find these in the [SDK Folder]\examples\peripheral folder. Description of the SDK13 examples can be found at the infocenter here.

The choice of pins is made when the TWI is initialized, where a config variable of type nrf_drv_twi_config_t is created. Here you have the .scl and .sda variables which will contain your pin numbers.

Best regards

Jørn Frøysa

[asabuncuoglu13]

Okay, I configured pins manually after this answer, but the problem for me was uart, example did not work for sparkfun breakout board so I modified the uart part of ble_app_uart example in the peripheral. I wanted to share my experience.

Thanks for your help.

[hedoluna]

Hi, asabuncuoglu13, would you please add HOW you modified the UART part? :) Thanks in advance :)

[asabuncuoglu13]

Hi hedoluna, when you simply initiate uart with uart_init function (as the peripheral example), you can call uart_put or uart_get to communicate. What wasn't working for me was pins. So for sparkfun breakout board I changed the rx pin to 26, tx pin to 27. Sorry for the late answer!

[hedoluna]

you're perfectly on time :) thanks, it's very useful to me!