The QN9080DK board can expose the I2C bus SDA and SCL in the pins
labeled D14 and D15 respectively in the J5 headers, and in the Pmod (J8)
connector in the pins 10 and 9 of the header respectively.
The bus has a 2K2 pull up resistor on each line when SB7 and SB8 (next
to the Pmod connector) are closed, which is the factory default.
The QN9080DK is the developer board reference from NXP for the QN908x
CPUs. The developer kit comes with two boards: a larger PCB with many
peripherals and a much smaller "USB dongle". This board adds initial
support for the larger "DK board". At the moment, with the minimal CPU
support this board only configures the GPIOs available in the board,
namely the RGB LED and the two user buttons.
