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This commit renames the NORETURN macro, indicating to the compiler
that a function does not return, into MP_NORETURN to maintain the same
naming convention of other similar macros.
To maintain compaitiblity with existing code NORETURN is aliased to
MP_NORETURN, but it is also deprecated for MicroPython v2.
This changeset was created using a similar process to
decf8e6a8b ("all: Remove the "STATIC"
macro and just use "static" instead."), with no documentation or python
scripts to change to reflect the new macro name.
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
The minimal port
This port is intended to be a minimal MicroPython port that actually runs. It can run under Linux (or similar) and on any STM32F4xx MCU (eg the pyboard).
Building and running Linux version
By default the port will be built for the host machine:
$ make
To run the executable and get a basic working REPL do:
$ make run
Building for an STM32 MCU
The Makefile has the ability to build for a Cortex-M CPU, and by default includes some start-up code for an STM32F4xx MCU and also enables a UART for communication. To build:
$ make CROSS=1
If you previously built the Linux version, you will need to first run
make clean to get rid of incompatible object files.
Building will produce the build/firmware.dfu file which can be programmed to an MCU using:
$ make CROSS=1 deploy
This version of the build will work out-of-the-box on a pyboard (and anything similar), and will give you a MicroPython REPL on UART1 at 9600 baud. Pin PA13 will also be driven high, and this turns on the red LED on the pyboard.
Building without the built-in MicroPython compiler
This minimal port can be built with the built-in MicroPython compiler disabled. This will reduce the firmware by about 20k on a Thumb2 machine, and by about 40k on 32-bit x86. Without the compiler the REPL will be disabled, but pre-compiled scripts can still be executed.
To test out this feature, change the MICROPY_ENABLE_COMPILER config
option to "0" in the mpconfigport.h file in this directory. Then
recompile and run the firmware and it will execute the frozentest.py
file.