circuitpython/ports/qemu-arm
stijn 30840ebc99 all: Enable extra conversion warnings where applicable.
Add -Wdouble-promotion and -Wfloat-conversion for most ports to ban out
implicit floating point conversions, and add extra Travis builds using
MICROPY_FLOAT_IMPL_FLOAT to uncover warnings which weren't found
previously.  For the unix port -Wsign-comparison is added as well but only
there since only clang supports this but gcc doesn't.
2020-04-18 22:42:28 +10:00
..
test-frzmpy all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
main.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
Makefile all: Enable extra conversion warnings where applicable. 2020-04-18 22:42:28 +10:00
Makefile.test qemu-arm: Let tinytest.o be built by standard build rules. 2019-12-17 13:32:07 +11:00
modmachine.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
moduos.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
mpconfigport.h all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
mphalport.h qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
mps2.ld qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
nrf51.ld qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
qstrdefsport.h all: Add *FORMAT-OFF* in various places. 2020-02-28 10:31:07 +11:00
README.md ports/qemu-arm: Rework "test" target using upytesthelper. 2017-12-13 09:07:51 +02:00
startup.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
stm32.ld qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00
test_main.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
uart.c all: Reformat C and Python source code with tools/codeformat.py. 2020-02-28 10:33:03 +11:00
uart.h qemu-arm: Rework to run bare-metal on boards with Cortex-M CPUs. 2019-02-12 13:50:01 +11:00

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 with GCC ARM Embedded toolchain 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