How to use I2C on nRF52840 Dongle ?

[rickygai]

Hi,

I am not sure whether there is I2C pins on nRF52840 Dongle board as based on the Adafruit Feather nRF52840 Express the pin is P0.11 and P0.12 as shown below:
SCL 0.11 and SCK 0.14 are at the back of the nRF52840 Dongle but SDA 0.12 is missing from the nRF52840 Dongle board.





There is a Youtube link shown the use of I2C display with nRF52840 Dongle but lacking explanation.

https://www.youtube.com/watch?v=vJUrG41tYFw


I am new to Nordic nRF52840 Dongle board and trying to support it under Arduino platform, but found out many missing important protocol pins.
Otherwise, I will just use Adafruit Feather nRF52840 Express.

May I know is the pin number held on Nordic nRF52840 (eg. 0.11) and on the schematic diagram (SCL P0.11) from Adafruit nRF52840 Express the same ?

Please advise.

[NikTheNordicUser]

Are you using the twi library or peripheral… if so the pins can be easily programmed to use almost any pins you wish. I recommend either showing us a code snippet as it will be easier to interpret or you can also look at this YouTube channel I found it very helpful during my implementations sumair’s embedded electronics

[Kazi Afroza Sultana]

Hello Nikolai,

Yes, TWI example is a good source to know about pin selection. I mentioned this in my comment as well. You might have forgotten to send the YouTube link here what you recommended in your reply. 

BR

Kazi