I2C, SPI and RF access on the nRF52840 Dongle

[bitbank]

I would like to use the nRF52840 Dongle for evaluating the platform for a custom product. I need to make use of I2C, SPI, BLE and maybe 802.15.4 raw packet access. I'm new to the "Nordic" way of doing things and am doing some experiments with the Segger IDE. I'm able to access GPIO pins without issue by modifying the blinky project, but when I try to use the twi support, it complains that the include file can't be found. I can build the TWI examples for other board types, but not the PCA10059. There are almost no example projects for the PCA10059, so is there some trick to modifying a PCA10056 project so that it will compile and run on the PCA10059?

[bitbank]

I understand that I will be steered towards using the nrf52840 DK board, but I need this SoC to be inside a small prototype for testing its suitability for a particular project. I would like to test power consumption of the nRF52840 in a functional prototype without creating a custom PCB. The dongle is the ideal starting point for such testing if I can get my software to run on it.