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The MicroPython project
2 825 Commity
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265 MiB
C 89.3%
Python 8.8%
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Dave Hylands 39296b40d4 Fix timer overflow code. 
Teensy doesn't need to worry about overflows since all of
its timers are only 16-bit.

For PWM, the pulse width needs to be able to vary from 0..period+1
(pulse-width == period+1 corresponds to 100% PWM)

I couldn't test the 0xffffffff cases since we can't currently get a
period that big in python. With a prescaler of 0, that corresponds
to a freq of 0.039 (i.e. cycle every 25.56 seconds), and we can't
set that using freq or period.

I also tested both stmhal and teensy with floats disabled, which
required a few other code changes to compile.
 		2014-09-27 19:40:37 -07:00
bare-arm py: Free non-interned strings in the parser when not needed. 2014-09-23 15:31:56 +00:00
docs docs: Make images and youtube video links work for LCD and AMP docs. 2014-09-25 19:42:27 +01:00
drivers drivers, cc3k: Move cc3000 driver from stmhal to drivers directory. 2014-09-26 00:56:45 +01:00
examples examples: Added pins.py example script to list pin config/af. 2014-08-24 18:34:38 +01:00
extmod Fix timer overflow code. 2014-09-27 19:40:37 -07:00
lib lib: Add basic README. 2014-09-18 00:13:03 +01:00
logo
…
py py: Simplify JSON str printing (while still conforming to JSON spec). 2014-09-25 17:35:56 +01:00
qemu-arm py: Free non-interned strings in the parser when not needed. 2014-09-23 15:31:56 +00:00
stmhal Fix timer overflow code. 2014-09-27 19:40:37 -07:00
teensy Fix timer overflow code. 2014-09-27 19:40:37 -07:00
tests py: Simplify JSON str printing (while still conforming to JSON spec). 2014-09-25 17:35:56 +01:00
tools stmhal: Fix bugs in documentation so it compiles. 2014-09-17 23:27:42 +00:00
unix py: For malloc and vstr functions, use size_t exclusively for int type. 2014-09-25 15:49:26 +01:00
unix-cpy Put call to qstr_init and mp_init_emergency_exc_buf in mp_init. 2014-08-04 10:05:16 +01:00
windows windows: Enable input(), sys.maxsize(), ujson module, emergency exception buf, os module 2014-09-22 11:10:27 +02:00
.gitignore Add GNUmakefile to the .gitignore file. 2014-07-24 00:09:56 -07:00
.travis.yml tests: Add option to run-tests to enable native emitter. 2014-08-29 19:47:10 +01:00
CODECONVENTIONS.md Updated CODECONVENTIONS to clarify use of integer types. 2014-09-25 15:49:26 +01:00
LICENSE
…
README.md README: Add USB VID/PID to dfu-util command. 2014-07-31 18:45:34 +01:00

README.md

[![Build Status][travis-img]][travis-repo] [travis-img]: https://travis-ci.org/micropython/micropython.png?branch=master [travis-repo]: https://travis-ci.org/micropython/micropython

The Micro Python project

MicroPython Logo

This is the Micro Python project, which aims to put an implementation of Python 3.x on a microcontroller.

WARNING: this project is in early beta stage and is subject to large changes of the code-base, including project-wide name changes and API changes.

Micro Python implements the entire Python 3.4 syntax (including exceptions, "with", "yield from", etc.). The following core datatypes are provided: str (no Unicode support yet), bytes, bytearray, tuple, list, dict, set, array.array, collections.namedtuple, classes and instances. Builtin modules include sys, time, and struct. Note that only subset of Python 3.4 functionality implemented for the data types and modules.

See the repository www.github.com/micropython/pyboard for the Micro Python board, the officially supported reference electronic circuit board.

Major components in this repository:

  • py/ -- the core Python implementation, including compiler and runtime.
  • unix/ -- a version of Micro Python that runs on Unix.
  • stmhal/ -- a version of Micro Python that runs on the Micro Python board with an STM32F405RG (using ST's Cube HAL drivers).
  • teensy/ -- a version of Micro Python that runs on the Teensy 3.1 (preliminary but functional).

Additional components:

  • bare-arm/ -- a bare minimum version of Micro Python for ARM MCUs. Start with this if you want to port Micro Python to another microcontroller.
  • unix-cpy/ -- a version of Micro Python that outputs bytecode (for testing).
  • tests/ -- test framework and test scripts.
  • tools/ -- various tools, including the pyboard.py module.
  • examples/ -- a few example Python scripts.

"make" is used to build the components, or "gmake" on BSD-based systems. You will also need bash and Python (at least 2.7 or 3.3).

The Unix version

The "unix" port requires a standard Unix environment with gcc and GNU make. x86 and x64 architectures are supported (i.e. x86 32- and 64-bit), as well as ARMv7. Porting to other architectures require writing some assembly code for the exception handling.

To build:

$ cd unix
$ make

Then to test it:

$ ./micropython
>>> list(5 * x + y for x in range(10) for y in [4, 2, 1])

Debian/Ubuntu/Mint derivative Linux distros will require build-essentials and libreadline-dev packages installed. To build FFI (Foreign Function Interface) module, libffi-dev package is required. If you have problems with some dependencies, they can be disabled in unix/mpconfigport.mk .

The STM version

The "stmhal" port requires an ARM compiler, arm-none-eabi-gcc, and associated bin-utils. For those using Arch Linux, you need arm-none-eabi-binutils and arm-none-eabi-gcc packages from the AUR. Otherwise, try here: https://launchpad.net/gcc-arm-embedded

To build:

$ cd stmhal
$ make

You then need to get your board into DFU mode. On the pyboard, connect the 3V3 pin to the P1/DFU pin with a wire (on PYBv1.0 they are next to each other on the bottom left of the board, second row from the bottom).

Then to flash the code via USB DFU to your device:

$ make deploy

You will need the dfu-util program, on Arch Linux it's dfu-util-git in the AUR. If the above does not work it may be because you don't have the correct permissions. Try then:

$ sudo dfu-util -a 0 -d 0483:df11 -D build-PYBV10/firmware.dfu