CircuitPython - a Python implementation for teaching coding with microcontrollers https://git.suspectdevices.com/suspect-devices/circuitpython/atom?h=3.0.0-alpha.6 2018-01-24T18:33:46+00:00 2018-01-24T18:33:46+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2018-01-24T00:22:05+00:00 urn:sha1:416abe33ed44e44d8f75342731080217e123278b This adapts the allocation process to start from either end of the heap when searching for free space. The default behavior is identical to the existing behavior where it starts with the lowest block and looks higher. Now it can also look from the highest block and lower depending on the long_lived parameter to gc_alloc. As the heap fills, the two sections may overlap. When they overlap, a collect may be triggered in order to keep the long lived section compact. However, free space is always eligable for each type of allocation. By starting from either of the end of the heap we have ability to separate short lived objects from long lived ones. This separation reduces heap fragmentation because long lived objects are easy to densely pack. Most objects are short lived initially but may be made long lived when they are referenced by a type or module. This involves copying the memory and then letting the collect phase free the old portion. QSTR pools and chunks are always long lived because they are never freed. The reallocation, collection and free processes are largely unchanged. They simply also maintain an index to the highest free block as well as the lowest. These indices are used to speed up the allocation search until the next collect. In practice, this change may slightly slow down import statements with the benefit that memory is much less fragmented afterwards. For example, a test import into a 20k heap that leaves ~6k free previously had the largest continuous free space of ~400 bytes. After this change, the largest continuous free space is over 3400 bytes. 2017-10-25T05:31:16+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2017-10-25T05:31:16+00:00 urn:sha1:73c15dcf8b1b927757a595a867334b38355ddb8f This is prep for merging in the NRF5 pull request. 2017-09-04T13:35:46+00:00 Damien George damien.p.george@gmail.com 2017-09-04T13:35:46+00:00 urn:sha1:77a48e8cd493c0b0e0ca2d2ad58a110a23c6a232 2017-09-02T20:05:24+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2017-09-02T18:19:01+00:00 urn:sha1:9950865c39044e9fef295d0676af7c5fd55289ea These are now returned as "operation not supported" instead of raising TypeError. In particular, this fixes equality for float vs incompatible types, which now properly results in False instead of exception. This also paves the road to support reverse operation (e.g. __radd__) with float objects. This is achieved by introducing mp_obj_get_float_maybe(), similar to existing mp_obj_get_int_maybe(). 2017-08-29T22:39:24+00:00 Paul Sokolovsky pfalcon@users.sourceforge.net 2017-08-29T22:35:48+00:00 urn:sha1:784909ce1655bf8b2a97ac81a3842e844992082f NotImplemented means "try other fallbacks (like calling __rop__ instead of __op__) and if nothing works, raise TypeError". As MicroPython doesn't implement any fallbacks, signal to raise TypeError right away. 2017-08-29T03:16:30+00:00 Damien George damien.p.george@gmail.com 2017-08-29T03:04:01+00:00 urn:sha1:58321dd9854d71a96e5db2d361e0efc05d9de8cf The unary-op/binary-op enums are already defined, and there are no arithmetic tricks used with these types, so it makes sense to use the correct enum type for arguments that take these values. It also reduces code size quite a bit for nan-boxing builds. 2017-08-26T02:17:07+00:00 Dan Halbert halbert@halwitz.org 2017-08-26T02:17:07+00:00 urn:sha1:ef61b5ecb59e9b4e37e3e3c023c62d583c23eb16 cpx build compiles and loads and works in repl; test suite not run yet esp8266 not tested yet 2017-07-31T08:35:40+00:00 Alexander Steffen devel.20.webmeister@spamgourmet.com 2017-06-30T07:22:17+00:00 urn:sha1:55f33240f3d7051d4213629e92437a36f1fac50e There were several different spellings of MicroPython present in comments, when there should be only one. 2017-07-18T01:57:39+00:00 Alexander Steffen devel.20.webmeister@spamgourmet.com 2017-06-29T21:14:58+00:00 urn:sha1:299bc625864b9e624ed599c94a5f95870516139a The code conventions suggest using header guards, but do not define how those should look like and instead point to existing files. However, not all existing files follow the same scheme, sometimes omitting header guards altogether, sometimes using non-standard names, making it easy to accidentally pick a "wrong" example. This commit ensures that all header files of the MicroPython project (that were not simply copied from somewhere else) follow the same pattern, that was already present in the majority of files, especially in the py folder. The rules are as follows. Naming convention: * start with the words MICROPY_INCLUDED * contain the full path to the file * replace special characters with _ In addition, there are no empty lines before #ifndef, between #ifndef and one empty line before #endif. #endif is followed by a comment containing the name of the guard macro. py/grammar.h cannot use header guards by design, since it has to be included multiple times in a single C file. Several other files also do not need header guards as they are only used internally and guaranteed to be included only once: * MICROPY_MPHALPORT_H * mpconfigboard.h * mpconfigport.h * mpthreadport.h * pin_defs_*.h * qstrdefs*.h 2017-06-20T17:56:05+00:00 Scott Shawcroft scott.shawcroft@gmail.com 2017-06-20T17:56:05+00:00 urn:sha1:30ee7019ca651bce1fe966c1089fe977d51dc92b Fixes for stmhal USB mass storage, lwIP bindings and VFS regressions This release provides an important fix for the USB mass storage device in the stmhal port by implementing the SCSI SYNCHRONIZE_CACHE command, which is now require by some Operating Systems. There are also fixes for the lwIP bindings to improve non-blocking sockets and error codes. The VFS has some regressions fixed including the ability to statvfs the root. All changes are listed below. py core: - modbuiltins: add core-provided version of input() function - objstr: catch case of negative "maxsplit" arg to str.rsplit() - persistentcode: allow to compile with complex numbers disabled - objstr: allow to compile with obj-repr D, and unicode disabled - modsys: allow to compile with obj-repr D and PY_ATTRTUPLE disabled - provide mp_decode_uint_skip() to help reduce stack usage - makeqstrdefs.py: make script run correctly with Python 2.6 - objstringio: if created from immutable object, follow copy on write policy extmod: - modlwip: connect: for non-blocking mode, return EINPROGRESS - modlwip: fix error codes for duplicate calls to connect() - modlwip: accept: fix error code for non-blocking mode - vfs: allow to statvfs the root directory - vfs: allow "buffering" and "encoding" args to VFS's open() - modframebuf: fix signed/unsigned comparison pendantic warning lib: - libm: use isfinite instead of finitef, for C99 compatibility - utils/interrupt_char: remove support for KBD_EXCEPTION disabled tests: - basics/string_rsplit: add tests for negative "maxsplit" argument - float: convert "sys.exit()" to "raise SystemExit" - float/builtin_float_minmax: PEP8 fixes - basics: convert "sys.exit()" to "raise SystemExit" - convert remaining "sys.exit()" to "raise SystemExit" unix port: - convert to use core-provided version of built-in import() - Makefile: replace references to make with $(MAKE) windows port: - convert to use core-provided version of built-in import() qemu-arm port: - Makefile: adjust object-file lists to get correct dependencies - enable micropython.mem_*() functions to allow more tests stmhal port: - boards: enable DAC for NUCLEO_F767ZI board - add support for NUCLEO_F446RE board - pass USB handler as parameter to allow more than one USB handler - usb: use local USB handler variable in Start-of-Frame handler - usb: make state for USB device private to top-level USB driver - usbdev: for MSC implement SCSI SYNCHRONIZE_CACHE command - convert from using stmhal's input() to core provided version cc3200 port: - convert from using stmhal's input() to core provided version teensy port: - convert from using stmhal's input() to core provided version esp8266 port: - Makefile: replace references to make with $(MAKE) - Makefile: add clean-modules target - convert from using stmhal's input() to core provided version zephyr port: - modusocket: getaddrinfo: Fix mp_obj_len() usage - define MICROPY_PY_SYS_PLATFORM (to "zephyr") - machine_pin: use native Zephyr types for Zephyr API calls docs: - machine.Pin: remove out_value() method - machine.Pin: add on() and off() methods - esp8266: consistently replace Pin.high/low methods with .on/off - esp8266/quickref: polish Pin.on()/off() examples - network: move confusingly-named cc3200 Server class to its reference - uos: deconditionalize, remove minor port-specific details - uos: move cc3200 port legacy VFS mounting functions to its ref doc - machine: sort machine classes in logical order, not alphabetically - network: first step to describe standard network class interface examples: - embedding: use core-provided KeyboardInterrupt object