Thread support, ESP8266 memory improvements, btree module, improved docs
This release brings multi-threading support in the form of the _thread
module, which closely matches the semantics of the corresponding CPython
module. There is support for GIL and non-GIL builds; without the GIL
enabled one must protect concurrent access to mutable Python state at the
Python level using Lock objects. Threading with the GIL is enabled in
the cc3200 port on the WiPy. Threading without the GIL is enabled on the
unix port. The ESP8266 port has support for frozen bytecode (for scripts
in the modules/ subdirectory), as well as optimisations for reduced
memory usage and decreased memory fragmentation. The ESP8266 RTC also
resumes correctly after a deepsleep. An initial "btree" module has been
implemented for database support (unix port only), and the documentation
has been further improved, with pre-built PDF versions of the docs now
available.
py core:
- parse: treat constants that start with underscore as private
- objdict: implemented OrderedDict equality check
- support to build berkeley db 1.85 and "btree" module
- mpconfig.h: MP_NOINLINE is universally useful, move from unix port
- makeqstrdefs.py: remove restriction that source path can't be absolute
- mkrules.mk: define "lib" outside conditional block
- rename __QSTR_EXTRACT flag to NO_QSTR
- objtype: instance: inherit protocol vtable from a base class
- mphal.h: if virtpin API is used, automagically include its header
- objtype: inherit protocol vtable from base class only if it exists
- add MP_STATE_THREAD to hold state specific to a given thread
- add basic _thread module, with ability to start a new thread
- modthread: properly cast concrete exception pointer to an object
- modthread: add stack_size() function
- modthread: add exit() function
- modthread: implement lock object, for creating a mutex
- modthread: add with-context capabilities to lock object
- gc: make memory manager and garbage collector thread safe
- modthread: satisfy unused-args warning
- gc: fix 2 cases of concurrent access to ATB and FTB
- modthread: be more careful with root pointers when creating a thread
- modthread: call mp_thread_start/mp_thread_finish around threads
- gc: fix GC+thread bug where ptr gets lost because it's not computed
- make interning of qstrs thread safe
- implement a simple global interpreter lock (GIL)
- don't use gc or qstr mutex when the GIL is enabled, there is no need
- modthread: make Lock objects work when GIL is enabled
- mpthread.h: move GIL macros outside MICROPY_PY_THREAD block
- modthread: allow to properly set the stack limit of a thread
- nlrthumb: convert NLR thumb funcs from asm to C with inline-asm
- nlrsetjmp: update to take into account new location of nlr_top
- mpthread: include mpstate.h when defining GIL macros
- gc: be sure to count last allocated block at heap end in stats
- gc: calculate (and report) maximum contiguous free block size
- builtinimport: disable "imported as namespace package" warning
- mpconfig.h: mention MICROPY_PY_BTREE config option
- objarray: split out header to allow direct access to object
- rename mp_obj_type_t::stream_p to "protocol"
extmod:
- modbtree: initial implementation of "btree" module based on BerkeleyDB
- modbtree: handle default value and error check
- modbtree: implement .items() iterator
- modbtree: actually implement end key support for .items()
- modbtree: items(): Implement "end key inclusive" flag
- modbtree: items(): Implement DESC flag
- modbtree: __getitem__() should raise KeyError for non-existing key
- modbtree: open(): Support "in-memory" database with filename=None
- machine_pinbase: implementation of PinBase class
- machine_pinbase: fix nanbox build
- modlwip: store a chain of incoming pbufs, instead of only one
- modbtree: implement keys(), values(), items() iterators
- modbtree: cleverly implement "for key in btree:" syntax
- modwebsocket: add readinto() method
- modwebrepl: add readinto() method
- modbtree: fix unused argument warning
- modbtree: fixes for nanbox build
- moduos_dupterm: reserve buffer bytearray object for dupterm
- moduos_dupterm: reuse dupterm_arr_obj for write operations
lib:
- berkeley-db-1.xx: add Berkeley DB 1.85 as a submodule
- berkeley-db-1.xx: update to upstream which builds for uPy
- fatfs/option/ccsbcs: follow uPy optional features model
- libm: format code to pass gcc v6.1.1 warning
- libm: remove unused definition of "one"
drivers:
- display/ssd1306: add width arg and support 64px wide displays
tests:
- recursive_iternext: clang/Linux is even more stack-frugal than MacOS
- bench: add testcase to compare bytes(N) vs b"\0" * N
- add testcase for OrderedDict equality
- add a testcase for machine.PinBase class
- extmod: add "btree" module test
- btree1: add testcase for iterating btree object directly
- add tests for _thread module
- add 3 more tests for _thread module
- thread: remove need to sleep to wait for completion in some tests
- thread: add tests for running GC within a thread, and heap stress
- thread: rename thread_stress_XXX.py to stress_XXX.py
- thread: add tests that mutate shared objects
- thread: add test for concurrent interning of strings
- thread: add test for concurrent mutating of user instance
- thread: make stack-size test run correctly and reliable on uPy
- thread: make sure that thread tests don't rely on floating point
- thread: allow thread_sleep1 to run without floating point
- thread: allow some tests to run on ports with not much heap
- meminfo: update for addition of "max free sz" output
- run-tests: If running thread tests on unix, don't run mutate ones
unix port:
- unbreak "minimal" target by disabling FatFs
- mpconfigport_minimal.h: clearly mark where user-define config ends
- deprecate support for GNU Readline (MICROPY_USE_READLINE=2)
- time to build with --gc-sections
- move "utime" module config to C level instead of make level
- Makefile: libffi: Build with -Os
- alloc: add option to use uPy's alloc-exec implementation even for libffi
- alloc: make coverage build and its overzealous warnings happy
- disable FatFs VFS for normal build, keep enabled for coverage
- modmachine: include PinBase class
- modmachine: enable time_pulse_us() function
- fix Makefile to handle gc-sections linker flags on Mac OS
- add basic thread support using pthreads
- file: if write syscall returns because of EINTR then try again
- implement garbage collection with threading
- mpthreadport: use SA_SIGINFO for GC signal handler
- gccollect: provide declaration of exported function
- mpthreadport: suppress compiler warning about unused arguments
- modtime: release the GIL when sleeping
- enable btree module
- Makefile: make "minimal" build be minimal again
- mpconfigport_minimal.h: allow to print a string within 1KB of heap
- main: error out on unknown value of suffix in -X heapsize= option
- main: improve help for -X options a bit
- main: when preparing sys.path, allocate exact strings on uPy heap
- disable the GIL to improve performance of non-thread code
windows port:
- follow unix port changes regarding "utime" module
- msvc: include machine_pinbase.c in build and enable umachine module
stmhal port:
- add board definition files for Olimex STM32-E407
- port of f4 hal commit 1d7fb82 to l4 hal (SD card modifications)
- correct DMA to allow SD card on L4 MCUs
- enable SD card on L4 MCUs
cc3200 port:
- update FreeRTOS to v9.0.0
- define our own FreeRTOS heap so it can go in a special segment
- add basic threading capabilities
- fix call to new exception to be _msg instead of _arg1
- use xTaskCreateStatic instead of osi_TaskCreate
- mpthreadport: make mutex statically allocated
- mpthreadport: properly initialise the main thread's data
- gccollect: use MP_STATE_THREAD(stack_top) to get top of stack
- mpthreadport: scan more root pointers from thread data
- mpthreadport: move mem alloc outside the thread_mutex lock
- enable the GIL
- in FreeRTOSConfig.h, comment on configSUPPORT_STATIC_ALLOCATION
- remove .boot section attribute from osi_TaskCreate function
- start the simplelink spawn task using the static task creator
- shrink the FreeRTOS heap and place TCB+stack in freed location
- allow to compile bootloader with threading enabled
- remove obsolete singleton heart-beat object
teensy port:
- update the README with OSX specific information and tips
esp8266 port:
- modnetwork: use struct bss_info::ssid_len for ESSID length
- let RTC work correctly after deepsleep
- switch floating-point arith routines to BootROM
- Makefile: enable --verify option for esptool.py write_flash
- use RTC to set date & time stamps for files
- main.c: clear the command line history when (re)booting
- enable frozen bytecode, with scripts in modules/ subdir
- README: describe how to build mpy-cross
- websocket_helper.py: avoid extra string allocations
- websocket_helper.py: fix typo in debug output
- modpybuart: allow setting baudrate and other params
- explicitly collect garbage in bootstrap scripts
- switch webrepl_setup to use frozen bytecode
- switch webrepl to use frozen bytecode
- README: promote from "highly experimental" to "experimental"
- main: init recently added dupterm_arr_obj port state var
- esp_mphal: call_dupterm_read: Use readinto() method
- esp_mphal: properly handle dupterm EOF after switching to readinto()
qemu-arm port:
- disable gcc LTO option for nlrthumb.c
docs:
- esp8266/tutorial/network_basics: minor typo fix, ap becomes ap_if
- add link to PDF version of docs in sidebar
- library/network: wipy: fix literal block indentation
- esp.socket: remove unused file
- ure: typo fix
- usocket: there must be empty line after .only::
- library/machine.Pin: mention GPIO and cross-link .value() function
- machine.*: add "currentmodule:: machine" directive
- pyb.*: add "currentmodule:: pyb" directive
- machine.Pin: remove explicit target
- machine.UART: cleanup pyboard section
- machine.*: use proper class case in method headers
- machine.Pin: add class designator to all constants
- pyb.CAN: mark CAN.initfilterbanks() as classmethod explicitly
- pyb.Pin: af_list() is a normal method, not a class method
- pyb.ExtInt,pyb.Pin: mark up class methods as such
- pyb.*: use proper class case in method headers
- pyb.Pin: sort .af() and .af_list() methods together
- builtins: enumerate all builtin functions implemented
- library/index: add builtins.rst
- machine.Pin: disambiguate object call method
- machine*: remove explicit targets and "machine." prefixes on classes
- uctypes: improve documentation
- sys: detailed description of print_exception() diff from traceback module
- add sphinx_selective_exclude extension suite
- conf.py: active sphinx_selective_exclude extensions
- rebuild docs from scratch, as required for proper only:: handling
- select: add an article
- sys: print_exception: Fixes/clarifications
- conf.py: exclude cmath from modindex for wipy
- library: fix typo in docs for usocket.listen()
examples:
- unix/ffi_example.py: update for current "ffi" module API
- unix/ffi_example.py: remove TODO, make output more clear
Many ESP8266 improvements, enhanced WebREPL, and support for STM32L4 MCUs
This release brings general improvements and bug fixes, and some new
features. There is now a uerror module for consistent errno handling
across ports, as well as textual names of OS errors that are printed when
an OSError is raised. There is support for frozen packages, via both
frozen scripts and frozen bytecode. WebREPL on the ESP8266 is greatly
improved with many bug fixes and now supports an unlimited (or very large)
number of reconnects. The os module on the ESP8266 now has rename, chdir,
getcwd and stat. The unix port now includes the ussl module by default.
The stmhal port has support for STM32L4 MCUs including the STM32L476
Discovery board and the LimiFrog board.
README:
- add explicit note that subdirs contain more READMEs
- add "make deplibs" to quick build section
- "quick build": Use "make axtls" after all
CODECONVENTIONS.md:
- describe git commit messages conventions
py core:
- obj: add warning note about get_array return value and GC blocks
- objstr: binary type of str/bytes for buffer protocol is 'B'
- runtime: properly handle passing user mappings to ** keyword args
- repl: if there're no better alternatives, try to complete "import"
- mpz: fix bug with overflowing C-shift in division routine
- mpz: do Python style division/modulo within bignum divmod routine
- mpz: fix mpn_div so that it doesn't modify memory of denominator
- vstr: vstr_null_terminated_str(): Extend string by at most one byte
- vstr: change allocation policy, +16 to requested size, instead of *2
- add mperrno.h file with uPy defined errno constants
- add uerrno module, with errno constants and dict
- parse: add uerrno to list of modules to look for constants in
- mperrno: add EAFNOSUPPORT definition
- repl: fix handling of backslash in quotes when checking continuation
- gc: gc_dump_alloc_table(): Show byte/str and (byte)array objects
- gc: make (byte)array type dumping conditional on these types being enabled
- gc: use '=' char for tail blocks when dumping heap
- mperrno: add some more MP_Exxx constants, related to networking
- moduerrno: add more constants to the errno module
- add mp_errno_to_str() and use it to provide nicer OSError msgs
- objfloat, py/modmath: ensure M_PI and M_E defined
- emitglue: fix build on AArch64 (ARMv8, etc.) related to loading .mpy files
- objexcept: don't convert errno to str in constructor, do it in print
- moduerrno: add EACCES, pretty common error on Unix
- gc: gc_dump_alloc_table(): dump heap offset instead of actual address
- objstr: make dedicated splitlines function, supporting diff newlines
- objstringio: add TODO comment about avoiding copying on .getvalue()
- modstruct: raise ValueError on unsupported format char
- stream: support both "exact size" and "one underlying call" operations
- declare constant data as properly constant
- stream: add mp_stream_close() helper function
- mphal.h: provide default prototypes for mp_hal_delay_us/mp_hal_ticks_us
- rework frozen modules support to support packages
- objstr: implement str.center()
- allow to stat and import frozen mpy files using new frozen "VFS"
- makeqstrdata.py: allow to have double-quote characters in qstrs
- objnamedtuple: allow passing field names as a tuple
- moduerrno: add EEXIST, EISDIR, ECONNREFUSED
- modstruct: allow to have "0s" in struct format
extmod:
- modlwip: convert errno's to use MP_Exxx symbols
- modlwip: rework how Python accept callback is called
- when including extmod headers, prefix path with extmod/
- modwebsocket: add close() method
- modwebrepl: add close() method
- moduos_dupterm: dumpterm subsystem is responsible for closing stream
- modussl: make more compatible with non-default obj representations
- machine_i2c: redo mp_hal_pin macros to use open_drain and od_low
- virtpin: initial implementation of open-ended C-level Pin interface
- vfs_fat: replace text error messages by POSIX error numbers
- vfs_fat: add chdir() method
- vfs_fat: add getcwd() method
- vfs_fat: add vfs.stat() method
- add machine time_pulse_us function (at C and Python level)
- machine: add MICROPY_PY_MACHINE_PULSE config for time_pulse_us
lib:
- timeutils/timeutils: timeutils_mktime may accept negative time values
drivers:
- cc3000: rename timeval to cc3000_timeval, to avoid clash
- add C-level function to read DHT11 and DHT22 devices
- display/ssd1306: update SSD1306_SPI to work with new API
tools:
- make-frozen.py: properly escape hex chars when making C strings
- make-frozen.py: quick fix to support package-modules
- mpy-tool.py: add checks for critical configuration vars
- make-frozen.py: update for latest changes in frozen modules support
- mpy-tool.py: include .py extension in frozen filename
- mpy-tool.py: don't strip directories from the frozen source name
- upgrade upip to 0.7: SSL cert warning, use uerrno, better usage message
tests:
- run-tests: factor out list of supported external boards
- disable memoryview tests that overflow int conversion
- basics/string_splitlines: reinstate feature test for splitlines
- struct1: add testcase for an unknown type char
- add testcase for str.center()
- extmod/vfs_fat_ramdisk: add testcases for chdir(), getcwd()
- misc/recursive_iternext.py: increase depth N from 1000 to 2000
- misc/recursive_iternext.py: provide more fine-grained selection of N
- pyb/rtc: make RTC test on pyboard more reliable by calling init()
mpy-cross:
- add -s option to specify the embedded source filename
unix port:
- mphalport: add mp_hal_delay_us() for consistency with other ports
- enable uerrno module
- add ability to include frozen bytecode in the build
- mpconfigport_coverage.h: add dedicated config file for coverage build
- unix_mphal: implement mp_hal_ticks_us()
- support frozen packages
- Makefile: nanbox build is not compatible with modussl, disable
- enable "ussl" module
- mpconfigport.mk: document MICROPY_STANDALONE make-level option
- Makefile: "make axtls": automatically fetch submodules if missing
windows port:
- enable multi-processor compilation for msvc
stmhal port:
- l4: adapt DMA to be able to support STM32L4 MCU series
- l4: adapt startup code, clock configuration and interrupts
- l4: make CCM/DTCM RAM start-up conditional on MCU type
- l4: add support for machine.sleep on STM32L4 MCUs
- dma: make DAC DMA descriptors conditional on having a DAC
- add board files for LIMIFROG board
- for LIMIFROG board, add early-init function to get to DFU mode
- dma: fix builds for boards with an F4 or F7 but no DAC
- sdcard: fix initialisation of DMA TX so that writes work
- can: allow to get existing CAN obj if constructed without args
- fix clock configuration for STM32L476-discovery; also add I2C2
- convert to use internal errno symbols; enable uerrno module
- for network drivers, convert to use MP_Exxx errno symbols
- led: allow LEDs to be in PWM mode with TIM1 and channels 1-4
- i2c: expose I2CHandle3 for use by custom C code
- sdcard: allow to do unaligned read-from/write-to SD card
- support frozen packages using .mpy files
- moduos: getcwd(): use mp_obj_new_exception_arg1()
- dac: add DAC deinit() method
- uart: fix wrong baudrate calculation for stm32l4 series
esp8266 port:
- scripts/: remove use of pin.PULL_NONE
- scripts/inisetup: don't start WebREPL on boot in master branch
- scripts/: add fill() to NeoPixel
- scripts/webrepl: add optional password argument to webrepl.start()
- scripts/webrepl: add start_foreground() method
- main: bump heap size to 28K
- mpconfigport: reduce various parser-related allocation params
- help: add "sta_if.active(True)" command
- convert to use new MP_Exxx errno symbols
- enable uerrno module, weak linked also as errno
- change to use internal errno's
- moduos.c: addition of the rename method to module uos
- scripts/port_diag: add network diagnostic output
- scripts/webrepl_setup: show password placeholder char
- scripts/webrepl_setup: add max password length check
- README: add a very first start section
- add APA102 serial individually controllable LEDs support
- enable collections.OrderedDict
- main: update _boot module loading for recent frozen modules refactors
- scripts/port_diag: dump network interface IP settings
- esp_mphal: fix NLR buffer leak in call_dupterm_read()
- esp_mphal: handle Ctrl+C from dupterm (e.g. WebREPL)
- esp_mphal: mp_uos_dupterm_deactivate() may raise exception
- add mp_hal_pin_input() and mp_hal_pin_output() functions
- modpybspi: configure pins when initialising an SPI object
- xtirq: add xtirq.h for controlling xtensa irqs
- ets_alt_task: don't run ets_loop_iter if irqs are disabled
- modmachine: add disable_irq and enable_irq functions
- enable DHT C-level driver
- add dht.py script for high-level control of DHT11/DHT22 sensor
- Makefile: document "disable" value for UART_OS
- modnetwork: scan() is only supported by STA when it's enabled
- modnetwork: protect scan() callback against memory errors
- modnetwork: allow to press ctrl-C while scan() is running
- uart: properly initialise UART0 RXD pin in uart_config
- moduos: add chdir() and getcwd() functions
- scripts/ntptime: allow to override NTP server
- modmachine: add machine.time_pulse_us function
- enable MICROPY_PY_IO_FILEIO to get compliant text/binary streams
- moduos.c: add stat() to the module uos of esp8266
- rtc: set RTC user memory length to 0 on first boot
- provide a dedicated variable to disable ets_loop_iter
- modpybrtc: handle RTC overflow
docs:
- machine.UART: filter out unimplemented UART methods from esp8266 docs
- esp8266/quickref: new way to get MAC address
- esp8266/quickstart: remove i2c examples with stop=False
- ustruct: describe supported type codes
- ussl: add basic description of axTLS-based modussl
- esp8266: Include ussl module in the docs
- machine: make disable_irq and enable_irq docs available for all
- library/machine: add documentation for machine.time_pulse_us
- math, cmath: add port availability information
- library/index: add intro paragraph regarding availability of modules
- README: add some hints for PDF docs generation
- wipy/tutorial: add note about screen key bindings on OS X
- esp8266/quickref: update WebREPL section for 1.8.1 release
- esp8266: fix ESP8266 Network tutorial
- esp8266/quickref: use local image of Adafruit Huzzah board
- esp8266/general: add note about RTC overflow
travis:
- install gcc-arm-none-eabi with --force-yes for now
First general release of ESP8266 port, and support for frozen bytecode
This release marks the first general release of official ESP8266 support
within the MicroPython code base. The ESP8266 port has many improvements
and additions, including: websocket and webrepl modules, deep-sleep mode,
reading on UART, enhanced I2C support, enhanced network configuration,
full sequence of start-up scripts (built-in _boot.py, boot.py and
main.py), improved filesystem support with automatic flash-size detection
as well as documentation and a tutorial.
Known issues with ESP8266 port are:
- Basic SSL support is available but it works only with relatively short
data lengths (a few kilobytes).
- WebREPL over SSL is not supported.
- Only 5 or so WebREPL sessions in succession can be started (including
file transfer sessions), after that the board requires a hard reset.
- File transfer over WebREPL has issues with large files (above a few
tens of kilobytes).
- By design, only one concurrent WebREPL connection is supported.
- Soft reset doesn't reset the network stack.
In addition to ESP8266 support, this release brings frozen bytecode
which allows to compile bytecode offline and link it into the firmware,
completely eliminating the need for compilation (and the associated
RAM usage) at runtime. Basic async/await syntax is now supported, and
qstrs are now auto-generated in the build system.
A detailed list of changes is given below.
README:
- explicitly point to required dependencies section
- promote "docs" and "tests" to "major components"
- mention support "async" keyword from Python 3.5
ACKNOWLEDGEMENTS:
- add list of 842 backers from the ESP8266 campaign
py core:
- modbuiltins: add comment about setting "_" special var
- add async/await/async for/async with syntax
- fix constant folding and inline-asm to work with new async grammar
- emitglue: move typedef of mp_raw_code_t from .c to .h file
- emitglue: make mp_raw_code_t* arguments constant pointers
- makeqstrdata: factor out some code to functions that can be reused
- add ability to have frozen persistent bytecode from .mpy files
- makeqstrdata: add more names for escaped chars and esc non-printable
- simplify "and" action within parser by making ident-rules explicit
- makeqstrdata: fix rendering of qstrs that have non-printable ASCII
- makeqstrdata: add special case to handle \n qstr
- declare help, input, open builtins in core
- map: change hash-table allocation policy to be less aggressive
- makeqstrdefs: add script to automate extraction of qstr from sources
- frozenmod: pass the source name of the frozen module to the lexer
- rework QSTR extraction to work in simple and obvious way
- divide "split" and "cat" phases of qstr extraction for better efficiency
- fix bug passing a string as a keyword arg in a dict
- move call_function_*_protected() functions to py/ for reuse
- makeqstrdefs.py: windows compatibility
- obj.h: when constructing a small-int cast to mp_uint_t for bit-shift
- emitnative: use MP_OBJ_NEW_SMALL_INT instead of manual bit shifting
- vm: "yield from" didn't handle MP_OBJ_STOP_ITERATION optimization
- modio: rename module name to "uio" for consistency with other modules
- modcollections: rename module name have "u" prefix for consistency
extmod:
- add initial framebuf module
- add generic machine.I2C class, with bit-bang I2C
- machine_i2c: fix I2C reading by sending ack/nack at end of byte
- machine_i2c: implement I2C memory reading/writing
- moduos_dupterm: don't swallow exceptions in dupterm's read()/write()
- modlwip: lwip_tcp_receive(): Properly handle EOF for non-blocking sock
- modlwip: more debug messages for various edge conditions
- fsusermount: in mount/mkfs, deregister VFS object on error
- modlwip: lwip_tcp_send(): full error handling
- modlwip: lwip_tcp_receive(): full error handling
- modlwip: add ability to run callback on "recv" and "accept" events
- machine_i2c: allow mp_hal_pin_obj_t to be any type, not a ptr
- modlwip: protect recv/accept Python callback against exceptions
- modlwip: workaround esp8266 sendto issue where 1 is returned
- modlwip: add print_pcbs() debug function
- modwebsocket: handle CLOSE control frame
- modussl: throw Python exceptions in case of errors
- modussl: support server-side SSL sockets
- modussl: SSL_OK from ssl_read() means "no user data so far"
- modwebrepl: module to handle WebREPL protocol
- modwebrepl: initial implementation of "get file" operation
- modwebrepl: keep reading data when there's something to read
- modwebrepl: GET_FILE: Send length-prefix chunk with one write()
- modwebrepl: add rate-limiting workaround for broken network drivers
- modwebrepl: set debugging by default to off
- modwebrepl: add support for password
- modlwip: implement sendall() method for TCP sockets
- fix typo of macro that detects if float is enabled
lib:
- utils/printf: rework overriding printer of DEBUG_printf()
- utils/pyexec: condition-out GC calls from pyexec
- utils/pyhelp: extract implementation of help(obj) to a library function
- axtls: update to the latest upstream, fix reported MacOSX build issue
drivers:
- add SSD1306 OLED driver, with I2C and SPI interfaces
tools:
- mpy-tool.py: new tool to work with .mpy files; currently it can freeze them
- mpy-tool.py: add support for Python 2.7
tests:
- add 6 tests for async await/for/with
- add .exp files for async tests, so they can run with Python 3.4
- fix dict1.py so it doesn't rely on the order of dict elems
- extmod: move split-on-empty-match tests to a separate test file
- add testcase for yielding from a stopped generator
- run-bench-tests: process tests in alphabetical order
- update for _io/_collections module having been renamed
minimal port:
- add example of frozen persistent bytecode (.mpy file)
- disable async/await syntax
unix port:
- build with MICROPY_PY_UHASHLIB_SHA1 if already building with axTLS
- make sure build dir exists before accessing it for freezing upip
- Makefile: make install more compatible (BSD, etc.)
windows port:
- msvc: implement automatic qstr generation using makeqstrdefs
stmhal port:
- implement basic C-level pin HAL
- use new generic I2C object in machine module
- enable framebuf module
- properly handle RTS/CTS flow control for buf/unbuf transfers
- add Makefile option FROZEN_MPY_DIR to support frozen bytecode
- for frozen bytecode generation, add dependency of qstr file
- l4: add CMSIS files to support STM32L476
- l4: add basic STM32L4xx HAL files
- l4: adapt UART HAL to avoid 64-bit integer division
- update HALCOMMITS due to change to hal
- l4: add board definition files for STM32L476DISC
- l4: add line to Makefile for building L4 series
- l4: modify adc.c to add support for STM32L4 series
- l4: modify uart.c to support L4 MCU
- l4: modify usbd_conf.c to support L4 MCU
- l4: modify rtc.c to support L4 MCU
- l4: modify timer.c to support L4 MCU
- fix machine.unique_id() function to work for all MCUs
- l4: modify mphalport to support L4 MCU
- l4: modify flash.c and storage.c to support L4 MCU
- l4: add support for external interrupts/events
- accel: raise an exception if the accel couldn't be initialised
- use pyhelp_print_obj function
- change i2c.scan() method to scan addresses 0x08-0x77
- fix typo of macro that detects if float is enabled
cc3200 port:
- use pyhelp_print_obj function
- change i2c.scan() method to scan addresses 0x08-0x77
- disable async/await syntax
esp8266 port:
- enable websocket module
- modnetwork: .config(): Check interface whose config is requested
- modnetwork: .config(): Add "authmode" param
- modnetwork: .config(): Add "password" param (W/O)
- add Python modules for initial configuration
- scripts/inisetup.py: set WPA/WPA2 AP mode with a predefined password
- protect modpyb.h header file from multiple inclusions
- implement basic C-level pin HAL
- switch from using custom I2C driver to generic extmod one
- enable framebuf module
- in callback helpers, pop nlr_buf on successful call
- esp_mphal: don't swallow exceptions in dupterm's read()/write()
- esp_mphal: call_dupterm_read(): Fix order of deactivating on EOF
- remove pin_id field from C pin object
- add dummy entries for non-existing pins to simplify pin logic
- add hard IRQ callbacks for pin change on GPIO0-15
- separate 1-wire timing funcs from Python module to save iRAM
- switch integer arith routines to BootROM
- scripts/port_diag.py: module to collect diagnostic info
- enable input() builtin
- scripts/_boot: mount block device on "" instead of "/"
- moduos: add uos.mkdir function
- modmachine: add reset_cause() function
- adapt port to use new auto-qstr generation
- moduos: add dupterm_notify() function
- esp_mphal: protect dupterm_task_handler() from recursive exec
- README.md: update feature list for current state of affairs
- modesp: allow esp.deepsleep to take 2nd arg for RF wake opt
- scripts/flashbdev: use all available space in 1MB FlashROM for FS
- modesp: add flash_size() function
- scripts: don't try to create filesystem on 512KB devices or less
- modnetwork: .config(): Add "channel" param
- scripts/flashbdev: disable debug output/checks
- scripts/_boot: print notice when initial setup is executed
- scripts/flashbdev: correct bootloader flash size to match real size
- modnetwork: .config(): Add "hidden ESSID" param
- implement basic deep-sleep capabilities
- add uart_rx_wait and uart_rx_char functions
- implement UART.read functionality
- uart: remove obsolete UART rx buffering code
- esp_mphal: remove mp_hal_feed_watchdog
- convert mp_hal_pin_obj_t from pin ptr to simple integer
- allow GPIO16 to be used as a pin in the uPy pin HAL
- change software SPI driver to use general pin HAL
- scripts/websocket_helper: module encapsulating handshake sequences
- scripts/websocket_helper: disable debug output
- scripts/webrepl: webREPL based on C-level websocket object
- scripts/webrepl: convert to persistent daemon
- scripts/webrepl: don't start on import
- scripts/webrepl: allow to override port
- scripts/webrepl: print connection address
- scripts/webrepl: print client address for incoming connections
- scripts/flashbdev: use all available Flash for filesystem
- scripts/webrepl: add "ws://" to "daemon started at" message
- Makefile: add target to build axTLS
- esp8266.ld: put axTLS to FlashROM
- Makefile: override abort() when building axtls
- axtls_helpers: helper/wrapper functions for axTLS
- tests/onewire.py: don't run test on import
- Makefile: support linking with axTLS built from source
- Makefile: enable "ussl" module; axTLS should be built first using "make axtls"
- move pyb.info() function to esp module and remove pyb module
- move onewire.py, neopixel.py drivers from tests/ to scripts/
- scripts/onewire.py: simplify and improve 1-wire driver
- scripts/neopixel.py: remove test function from neopixel driver
- set suitable values for axtls's RT_MAX_PLAIN_LENGTH & RT_EXTRA
- README: add recently required step of 'make axtls'
- modnetwork: make WLAN.ifconfig() read/write
- help: implement help() builtin
- help: add cheatsheet for basic WiFi configuration
- enable WebREPL file transfer rate limiting
- enable webrepl module
- scripts: move all of initial setup to inisetup module
- scripts/inisetup: create default boot.py in filesystem
- scripts/webrepl: connection ack prompt is now printed by modwebrepl
- scripts/webrepl: switch to using _webrepl object wrapper
- scripts/webrepl: add "first connection" mode to setup password
- README: mention WebREPL
- Makefile: be sure to pass cross-compiling AR when building axtls
- scripts/webrepl_setup: reject too short passwords
- change platform name from ESP8266 to esp8266
- modnetwork: remove deprecated wifi_mode()
- esp_mphal: add ets_esf_free_bufs(), etc. functions
- modesp: add esf_free_bufs() debugging function
- modesp: add malloc() and free() functions
- scripts/inisetup: enable WebREPL auto-start on boot
- modnetwork: remove .mac() method, move to .config("mac")
- scripts/inisetup: update for nic.mac() method being gone
- scripts/neopixel.py: swap red and green in pixel accessor
- modpybpin: use enum+array instead of struct for parsing args
- modpybpin: use None instead of PULL_NONE for no-pull config
- modpybpin: make pin.irq() methods take keyword args
- tutorial: mention that esptool is available via pip
- scripts/ntptime: add simple NTP client
docs:
- esp: enumerate flash access functions
- machine: start to update for esp8266 port
- speed_python: clarify/generalize "Buffers" subsection
- speed_python: generalize "Floating point" subsection
- speed_python: add many more details on memoryviews
- machine: reset_cause() has been implemented for esp8266
- topindex.html: esp8266: Enable quickref/general on the main page
- esp8266/general: start "General information" for esp8266
- esp8266: add info about using deep-sleep mode to quickref
- esp8266/tutorial: add tutorial placeholder page
- ustruct: there's no complete "struct" module, only "ustruct" subset
- esp8266: include usocket module reference
- library/usocket: add link to CPython's socket module
- usocket: socket-specific exceptions are for WiPy only
- usocket: socket.IPPROTO_SEC is WiPy-specific
- usocket: describe address format once at the beginning
- network: esp8266: scan(): add note that bssid is bytes object
- library: group MicroPython-specific modules under separate heading
- library/index: move WiPy "micro-libraries" under corresponding heading
- library/index: esp8266 has the same set of stdlibs as pyboard/unix
- module "time" is actually "utime"
- library/index: make single section for "micro-ified" modules
- library/index: order sections from the most to least standard modules
- Makefile: default BUILDDIR based on MICROPY_PORT
- library: "os" module is actually "uos"
- fix uos and utime heading underlines to be the correct length
- library/utime: add more time functions for unix and esp8266 ports
- utime: describe time() peculiarities in MicroPython
- utime: describe sleep() peculiarities in MicroPython
- library: consistently use admonitions for CPython differences
- ubinascii: clean up grammar
- network: esp8266: Add wlan.ifconfig() method
- network: esp8266: Describe wlan.config() method
- make the short port names in the port/version sidebar lowercase
- esp8266: update quickref to reflect changes to 1-wire and NeoPixel
- library/utime: elaborate on epochs and calendar time maintenance
- esp8266/quickref: add info about WebREPL
- ustruct: document pack_into(), unpack_from()
- sys: document sys.modules
- ustruct: fix argument formatting
- sys: remove port-specific details from description of stdin/out/err
- sys: clarify description of sys.exit()
- sys: clean up print_exception() description
- sys: describe sys.implementation
- sys: describe sys.maxsize
- sys: describe sys.platform is port-neutral manner
- add _collections module reference
- add _io module reference
- _io and _collections were renamed to have standard "u" prefix
- library/machine.I2C: update to reflect ESP8266 implementation
- esp8266/general: webREPL is described in quickref for now
- esp8266/general: add more points to "Multitude of boards" section
- esp8266/general: fix list formatting
- esp8266/general: add techspec section
- esp8266/general: add "Boot process" section
- esp8266_contents: reference general and tutorial docs
- network: esp8266: MAC address is set via .config() method
- esp8266: add ESP8266 tutorial
- machine: generalize docs from just WiPy to other ports
- machine: move WiPy-specific hardware details to its general reference
- machine: more generic description of sleep's, WiPy details to its genref
- machine: idle() description generalization
- library/machine.Pin: update pin docs to reflect ESP8266 support
- esp8266/tutorial: update pins tutorial to reflect changes in API
examples:
- http_server_ssl.py: add HTTPS server example
Threading support is still very new so stay conservative at this point
and enable threading without the GIL. This requires users to protect
concurrent access of mutatable Python objects (eg lists) with locks at
the Python level (something you should probably do anyway). The
advantage is that there is less of a performance hit for non-threaded
code, because the VM does not need to constantly release/acquire the GIL.
In the future the GIL will be made more efficient. There is also room to
improve the efficiency of non-GIL code by not using mutex's if there is
only one thread active.
Due to the way modern compilers work (allocating space for stack vars once
at tha start of function, and deallocating once on exit from), using
intermediate stack buffer of big size caused blockage of 4K (PATH_MAX)
on stack for the entire duration of MicroPython execution.
This follows source code/header file organization similar to few other
objects, and intended to be used only is special cases, where efficiency/
simplicity matters.
Previously, if there was chain of allocated blocks ending with the last
block of heap, it wasn't included in number of 1/2-block or max block
size stats.
To start with, the critical scripts _boot.py and flashbdev.py are frozen
to improve performance and reduce RAM consumption.
Saves about 1000 bytes of heap RAM for a bare boot with filesystem.
The 16k FreeRTOS heap originally had all TCBs and stacks dynamically
allocated within it (plus semaphores and some other things). Now that
xTaskCreateStatic is used instead of xTaskCreate, the TCBs and stacks
are allocated statically and no longer use any of the FreeRTOS heap.
Therefore, the FreeRTOS stack can be shrunk by the amount that has been
made static. Furthermore, the TCBs and stack that are now static should
be placed in the .rtos_heaps section of RAM because this RAM is treated
specially by the bootloader (the bootloader executes from the first 16k
of RAM and loads the firmware into the section starting after the 16k).
After this patch the FreeRTOS heap (ucHeap) is 7200 bytes. The memory
available for the MicroPython heap is 54936 bytes (including GC overhead).
In VStartSimpleLinkSpawnTask we change xTaskCreate to xTaskCreateStatic
so that the task is created using statically allocated memory for the TCB
and stack.
This means that xTaskCreate function is no longer needed (the static
version is now used exclusively).
This function is no longer used. Having the .boot section attribute
meant that it was included in the firmware regargless of use. Without
this attribute the linker can remove the function.
