2021-03-12 10:03:03 +00:00
|
|
|
The bare-arm port
|
|
|
|
|
=================
|
|
|
|
|
|
|
|
|
|
This port is intended to be the bare-minimum amount of code and configuration
|
|
|
|
|
required to get MicroPython compiling and running on a bare-metal ARM-based
|
|
|
|
|
target. No external dependencies or libraries are needed for this build and
|
|
|
|
|
it shows exactly what hardware and system functionality MicroPython needs to
|
|
|
|
|
run.
|
|
|
|
|
|
|
|
|
|
To build, simply run `make` in this directory. The output will be
|
|
|
|
|
`build/firmware.elf` (and also corresponding `.bin` and `.dfu` files). This
|
|
|
|
|
firmware can run on an STM32F405-based board (eg a PYBv1.x) and `make deploy`
|
|
|
|
|
will program it to such an MCU when put in USB DFU mode. The output is a UART
|
|
|
|
|
at 115200 baud, with TX on PA0.
|
|
|
|
|
|
|
|
|
|
There are some simple demonstration code strings (see `main.c`) which are
|
|
|
|
|
compiled and executed when the firmware starts. They produce output on the
|
|
|
|
|
system's stdout.
|
|
|
|
|
|
|
|
|
|
The size of the firmware (the machine code that is programmed to the
|
2021-04-27 14:52:40 +01:00
|
|
|
microcontroller's flash/ROM) is currently around 57900 bytes.
|
