micropython/ports/qemu-arm

This is experimental, community-supported port for Cortex-M emulation as provided by QEMU (http://qemu.org).

The purposes of this port are to enable:

1. Continuous integration
   • run tests against architecture-specific parts of code base
2. Experimentation
   • simulation & prototyping of anything that has architecture-specific code
   • exploring instruction set in terms of optimising some part of MicroPython or a module
3. Streamlined debugging
   • no need for JTAG or even an MCU chip itself
   • no need to use OpenOCD or anything else that might slow down the process in terms of plugging things together, pressing buttons, etc.

This port will only work with the [GNU ARM Embedded Toolchain]( https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads and not with CodeSourcery toolchain. You will need to modify LDFLAGS if you want to use CodeSourcery's version of arm-none-eabi. The difference is that CodeSourcery needs -T generic-m-hosted.ld while ARM's version requires --specs=nano.specs --specs=rdimon.specs to be passed to the linker.

To build and run image with builtin testsuite:

make -f Makefile.test test