v1.8.6

SP8266 port uses SDK 2.0, has more heap, has support for 512k devices

A detailed list of changes follows.    

py core:

•     - py.mk: automatically add frozen.c to source list if FROZEN_DIR is defined

•     - be more specific with MP_DECLARE_CONST_FUN_OBJ macros

•     - specialise builtin funcs to use separate type for fixed arg count

•     - {modbuiltins,obj}: use MP_PYTHON_PRINTER where possible

•     - modbuiltins: add builtin "slice", pointing to existing slice type

•     - add "delattr" builtin, conditional on MICROPY_CPYTHON_COMPAT

•     - sequence: fix reverse slicing of lists

•     - fix null pointer dereference in mpz.c, fix missing va_end in warning.c

•     - remove asserts that are always true in emitbc.c

•     - fix wrong assumption that m_renew will not move if shrinking

•     - change config default so m_malloc0 uses memset if GC not enabled

•     - add MICROPY_FLOAT_CONST macro for defining float constants

•     - move frozen bytecode Makefile rules from ports to common mk files

•     - strip leading dirs from frozen mpy files, so any path can be used

extmod:

•     - vfs_fat_file: check fatfs f_sync() and f_close() returns for errors

•     - vfs_fat_file: make file.close() a no-op if file already closed

•     - utime_mphal: ticks_diff(): switch arg order, return signed value

•     - utime_mphal: add MP_THREAD_GIL_EXIT/ENTER warppers for sleep functions

•     - utime_mphal: implement ticks_add(), add to all maintained ports

•     - utime_mphal: allow ticks functions period be configurable by a port

lib:

•     - utils/pyhelp.c: use mp_printf() instead of printf()

•     - utils/pyexec: add mp_hal_set_interrupt_char() prototype

•     - libm: move Thumb-specific sqrtf function to separate file

drivers:

•     - add "from micropython import const" when const is used

tools:

•     - upgrade upip to 1.1.4: fix error on unix when installing to non-existing absolute path

•     - pip-micropython: remove deprecated wrapper tool

•     - check_code_size.sh: code size validation script for CI

•     - replace upip tarball with just source file, to make its inclusion as frozen modules in multiple ports less magic

tests:

•     - extmod/vfs_fat: improve VFS test coverage

•     - basics/builtin_slice: add test for "slice" builtin name

•     - basics: add test for builtin "delattr"

•     - extmod/vfs_fat_fsusermount: improve fsusermount test coverage

•     - extmod/vfs_fat_oldproto: test old block device protocol

•     - basics/gc1: garbage collector threshold() coverage

•     - extmod/uhashlib_sha1: coverage for SHA1 algorithm

•     - extmod/uhashlib_sha256: rename sha256.py test

•     - btree1: fix out of memory error running on esp8266

•     - extmod/ticks_diff: test for new semantics of ticks_diff()

•     - extmod/framebuf1: test framebuffer pixel clear, and text function

minimal port:

•     - Makefile: split rule for firmware.bin generation

unix port:

•     - Makefile: remove references to deprecated pip-micropython

•     - modtime: use ticks_diff() implementation from extmod/utime_mphal.c

•     - mphalport.h: add warning of mp_hal_delay_ms() implementation

•     - modtime: switch ticks/sleep_ms/us() to utime_mphal

•     - fix symbol references for x86 Mac

•     - replace upip tarball with just source file

windows port:

•     - enable utime_mphal following unix, define mp_hal_ticks_*

•     - fix utime_mphal compilation for msvc

•     - implement mp_hal_ticks_cpu in terms of QueryPerformanceCounter

qemu-arm port:

•     - exclude ticks_diff test for qemu-arm port

•     - exclude extmod/vfs_fat_fileio.py test

•     - exclude new vfs_fat tests

•     - enable software floating point support, and float tests

stmhal port:

•     - modutime: refactor to use extmod's version of ticks_cpu

•     - refactor pin usage to use mp_hal_pin API

•     - led: refactor LED to use mp_hal_pin_output() init function

•     - Makefile: use standard rules for frozen module generation

•     - modutime: consistently convert to MP_ROM_QSTR/MP_ROM_PTR

•     - enable SD power save (disable CLK on idle)

cc3200 port:

•     - use mp_raise_XXX helper functions to reduce code size

•     - mods/pybspi: allow "write" arg of read/readinto to be positional

•     - enable loading of precompiled .mpy files

•     - fix thread mutex's so threading works with interrupts

teensy port:

•     - update to provide new mp_hal_pin_XXX functions following stmhal

esp8266 port:

•     - Makefile: use latest esptool.py flash size auto-detection

•     - esp_init_data: auto-initialize system params with vendor SDK 2.0.0

•     - esp8266.ld: move help.o to iROM

•     - esp8266.ld: move modmachine.o to iROM

•     - esp8266.ld: move main.o to iROM

•     - add MP_FASTCODE modifier to put a function to iRAM

•     - main: mark nlr_jump_fail() as MP_FASTCODE

•     - modules/webrepl: enforce only one concurrent WebREPL connection

•     - etshal.h: add few more ESP8266 vendor lib prototypes

•     - modesp: add flash_user_start() function

•     - add support for building firmware version for 512K modules

•     - scripts: make neopixel/apa102 handle 4bpp LEDs with common code

•     - modutime: consistently convert to MP_ROM_QSTR/MP_ROM_PTR

•     - modnetwork: config(): fix copy-paste error in setting "mac"

•     - scripts/port_diag: add descriptions for esf_buf types

•     - modnetwork.c: allows AP reconnection without WiFi credentials

•     - main: bump heap size to 36K

•     - etshal.h: add prototypes for SPIRead/SPIWrite/SPIEraseSector

•     - etshal.h: adjust size of MD5_CTX structure

•     - modules: fix negative temperature in ds18x20 driver

•     - rename "machine" module implementation to use contemporary naming

•     - rework webrepl_setup to run over wired REPL

•     - espneopixel.c: solve glitching LED issues with cpu at 80MHz

•     - include upip as a standard frozen bytecode module

•     - update docs for esptool 1.2.1/SDK 2.0 (--flash_size=detect)

•     - modnetwork.c: expose configuration for station DHCP hostname

zephyr port:

•     - implement utime module

•     - use board/SoC values for startup banner based on Zephyr config

•     - initial implementation of machine.Pin

•     - zephyr_getchar: update for recent Zephyr refactor of console hooks

•     - support time -> utime module "weaklink"

•     - README: update for the current featureset, add more info

•     - mpconfigport.h: move less important params to the bottom

•     - Makefile: allow to adjust heap size from make command line

•     - Makefile: update comments to the current state of affairs

•     - Makefile: allow to override Zephyr config from make command line

•     - Makefile: add minimal port

•     - Makefile: add -fomit-frame-pointer to reduce code size

•     - mphalport.h: update for new "unified" kernal API (sleep functions)

docs:

•     - machine.SPI: bring up to date with Hardware API, make vendor-neutral

•     - machine.SPI: improve descriptions of xfer methods

•     - library/builtins: add docs for delattr and slice

•     - library/network: reword intro paragraph

•     - library/network: typo fixes, consistent acronym capitalization

•     - library/index: update TOCs so builtins sorted before modules

•     - utime: document ticks_cpu() in more detail

•     - utime: describe new semantics of ticks_diff() (signed ring arithmetics)

•     - utime: add docs for ticks_add(), improvements for other ticks_*()

•     - esp8266: update for new WebREPL setup procedure

•     - */quickref.rst: use new semantics of ticks_diff()

•     - library/machine.Pin: update Pin docs to align with new HW API

travis:

•     - integrate tools/check_code_size.sh

•     - minimal: Use CROSS=1, for binary size check

examples:

•     - http_server_simplistic: add "not suitable for real use" note

•     - hwapi: example showing best practices for HW API usage in apps

•     - hwapi: add hwconfig for DragonBoard 410c