For my Thingy91 project I need to hook into a variety of hardware interfaces including I2C. I am struggling to relate the pins https://infocenter.nordicsemi.com/topic/ug_thingy91/UG/thingy91/hw_description/pin_maps.html to what I see on the board. e.g. on the board it says things like P1, P2, 1D, 2D, P6 etc How are they related?
There appears to be a bit more information here: https://infocenter.nordicsemi.com/topic/ug_thingy91/UG/thingy91/hw_description/hw_interface.html
But nothing comprehensive and the numbering system in the pinout is completely different from the board. Where can I find this information and specifically how can I connect to I2C?
