Artemis Module target doesn't compile #406
Description
This target was added in the initial release of v2.0.0, but was never given the attention to fully work.
I doing this now.
The goal is to define as little about the target as possible so that a user who wants to make their own custom board can quickly do so.
So far I have only defined 3 things.
USB_SERIAL_RX 49
USB_SERIAL_TX 48
LED1/LED_BUILTIN 5
I believe all of these to be required to make an mbed library and arduino core. They could also assist someone bringing up a board for the first time and allow them to test code on a custom board and and ATP for side by side comparisons. A user may want to change these and a recompile of the mbed library would be required, but this would be also be true if these values were left blank for a user to define themselves anyways.
All other SPI, UART, and Wire interfaces are left undefined for the user to define as they desire.