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================ Python-on-a-Chip ================ featuring PyMite ================ :Author: Dean Hall :Copyright: Copyright 2002 Dean Hall. See License_ for details. :Release: 09 :Site: https://www.pythononachip.org Purpose ------- Python-on-a-Chip (p14p) is a project to develop a reduced Python virtual machine (codenamed PyMite) that runs a significant subset of the Python 2.6 language on microcontrollers without an OS. The other parts of p14p are the device drivers, high-level libraries and other tools. Please join the `python-on-a-chip google group`_ to discuss this project. .. _`python-on-a-chip google group`: https://groups.google.com/group/python-on-a-chip License ------- See the LICENSE_ file to understand the terms of licensing for each component of the Python-on-a-Chip program. .. _LICENSE: LICENSE Build ----- P14p is built, for most platforms, using a POSIX-like terminal, a Makefile (or using SCons) and a GCC [cross] compiler. The desktop64 platform is the default target platform and it builds for Mac OS X, Linux or Cygwin. GNU Make should be installed since other forms of Make aren't 100% compatible. The development system should have installed the `GNU Compiler Collection`_ version 3.4 or later and `Python`_ 2.6. The SCons build system is experimental. Please read ``docs/src/BuildSystem.txt`` for more details. To build p14p for the desktop platform and run the interactive prompt:: $ make ipm ... ipm> print "Hello world." Hello world. ipm> ^D Press Control+D when done with the interactive prompt. To run the system tests on the desktop:: $ make check To cross-compile for a different platform, type ``make PLATFORM=<plat>`` where ``<plat>`` is the name of a subdirectory in ``src/platform/``. For example:: $ make PLATFORM=avr The author uses avr-gcc to compile for Atmel AVR microcontrollers. Other platforms use other compilers. The windows platform uses a MicroSoft IDE. Since p14p is so deeply embedded, it does not rely on many libraries. For example, the avr platform needs only avr-libc and the econotag platform requires newlib but also uses libmc1322x for advanced wireless features. .. _`GNU Compiler Collection`: https://gcc.gnu.org/ .. _`Python`: https://www.python.org/download Discussion ---------- Please browse the `Python-on-a-chip project`_ site for up-to-date information. and join the `Python-on-a-chip maillist`_ for discussion about the p14p project. .. _`Python-on-a-chip project`: https://code.google.com/p/python-on-a-chip/ .. _`Python-on-a-chip maillist`: https://groups.google.com/group/python-on-a-chip Thanks ------ My personal thanks go out to these people for their recent contribution to p14p: r0A ~~~ - David Earlam: finding and fixing a defect with backtraces. - JT: reporting and fixing a defect with the mbed build. - Sitti: suggested an improvement for the mbed Makefile. - James Thomas: Created issues and patches for ipm, mbed and __bi.py. - Sergiu Mihai: Reported that arduino_mega port wasn't working - Andrej Antonov: Reported and sent patch to desktop/ipm.py - Tonio Monnet: Maintained the pmHeapDump.py tool r09 ~~~ - Oscar Lindberg: Porting p14p to the MoSync platform. - Alex Litz: Reported an error on the windows platform. - Tonio Monnet: Recommended to use 'const' for the native func table to save RAM, enhancements to src/tools/pmHeapDump.py. - Michael (michaelnt): Reporting mbed sys.time() and including a patch. - Angus Gratton: enhancements to lib/avr, port to Teensy++ - J.W. Bruce: Reporting build issue and provided fix. - Michael (xinx): Found mbed name conflict, reported PySerial issue in ipm and provided fix, reported error in the porting document, donated code to allow hex string formatting. - Michael Reithinger: Reported GC defects and provided fixes. - Davide Carboni: Reported a build break, implemented module loading in ipm. - Markus Gritsch: Feedback on PIC port and ipm docs. - Bryan Jones: Making Doxygen docs, developing port to PIC24/dsPIC33 platform, mainlining VM bug fixes and helping the windows port. - Trammell Hudson: Patches for string concatenation and backtick operator (UNARY_CONVERT). - Duncan McGreggor: Creating an excellent Python-on-a-Chip logo. - Jan Wedel: Reporting an issue and providing a fix for the DELETE_ATTR bytecode. - Tyler Wilson: Porting and maintaining p14p on the Windows platform and making good VM improvement suggestions. - Thomas Fenzl: Patching and testing for 64-bit systems. - Alex Clausen: Reporting a build break and including a patch for 64-bit systems. - James Snyder: Porting and maintaining p14p on the STM32 platform. Target Platforms ---------------- Platforms in **bold** are new since the previous release: - **arduino_mega**: The Atmel ATmega1280 based `Arduino Mega board`_ - at91sam7s-ek: The Atmel `evaluation kit for the ARM7 AT91SAM7S64`_ **[Not Recommended]** - avr: Generic `Atmel AVR`_ - desktop: Mac OS X, Linux, Cygwin or any other Posix-like desktop OS - **desktop64**: Mac OS X, Linux, Cygwin or any other 64-bit Posix-like desktop OS - **econotag**: The Freescale MC13224 based `Redbee EconoTAG`_ 802.15.4 wireless module - mbed: The NXP LPC1368 based mbed_ microcontroller platform - mmb103: The Atmel ATmega103 based Mega Mini Board **[Not Recommended]** - **mosync**: The MoSync_ cross-platform framework for mobile platforms. - **pic24**: The `Microchip PIC24/dsPIC family`_ - **stm32**: The ST Microelectronics STM32F103 `ET-STM32 Stamp Module`_ - **teensy**: The Atmel ATmega 1280 based `Teensy++ 2.0`_ - **windows**: The MicroSoft Windows desktop OS .. _`Arduino Mega board`: https://arduino.cc/en/Main/ArduinoBoardMega .. _`evaluation kit for the ARM7 AT91SAM7S64`: https://www.atmel.com/dyn/products/tools_card.asp?tool_id=3784 .. _`Atmel AVR`: https://www.atmel.com/products/AVR/megaavr.asp?family_id=607&source=avrhomereadmore .. _`Redbee EconoTAG`: https://redwirellc.com/store/index.php?route=product/product&product_id=56 .. _mbed: https://mbed.org/ .. _MoSync: https://www.mosync.com/ .. _`Microchip PIC24/dsPIC family`: https://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2629¶m=en533465 .. _`ET-STM32 Stamp Module`: https://www.futurlec.com/ET-STM32_Stamp.shtml .. _`Teensy++ 2.0`: https://www.pjrc.com/teensy/ Release Notes ------------- This is release 09 * Release 09, 2010/09/21 For a complete list of changes for this release, `go here`_. Added support for the following major new features: - Classes with multiple inheritance - Generators with iterators, expressions and coroutines - String concatenation using the addition operator '+' - Migrated to Python 2.6 compiler and bytecodes - The backtick operator (s=`x`) for integers and floats - String format (%) using %d,s,f format chars - Closures. Also allows decorators with an argument - The Bytearray class: packet = bytearray(128); b = bytearray(b"abc") And: - Improved appearance of ipm - Fixed three nasty defects in the Garbage Collector - Improved readability of exception tracebacks for some platforms - Moved native function tables to "const" to save RAM - Added iter() to builtins (commented out) - Fixed string.count and string.find * Release 08, 2009/04/20 * Release 07, 2009/03/08 * Release 06, 2009/01/30 * Release 05, 2007/05/10 * Release 04, 2006/12/14 * Release 03, 2006/09/17 * Release 02, 2006/08/11 * Release 01, 2003/03/18 .. _`go here`: https://code.google.com/p/python-on-a-chip/issues/list?can=1&q=Milestone%3D09 .. :mode=rest:
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