Porting to SparkFun Thing Plus

[napei]

Hey 😄

Just wondering how easy this is to port to a SparkFun Thing Plus nRF9160 https://www.sparkfun.com/products/17354. All the shcematics and wiring are public I'm more struggling with the implementation of the "features"

I've gotten most of the way with pin mappings, but I'm stuck on the external flash, USB-UART, battery measurement and a couple of other things.

What I've achieved so far (does not work once flashed), is here: https://github.com/napei/nrf9160-sparkfun

There is also an LED, which is connected to D7, which is also made available as a header on the board so not sure how to handle that exclusivity.