a simple Nim template with the arm-none-eabi-gcc toolchain and qemu. qemu's versatilepb machine emulation is used. newlib's "_write" is retargeted so "echo" outputs to uart0.
run the example with "nim run_armdemo project.nims"
- example is not running on real hardware because of the simplified uart function
- tested with Nim compiler version 1.5.1 / GNU-ARM toolchain 9.2.1 20191025 (release) with windows10 host
- TODO: get the timertick running