micropython/micropython v1.12 on GitHub

This release sees a reduction in overall bytecode size due to compression of the bytecode prelude, saving 7 bytes of bytecode per function for roughly 80% of functions. The bytecode opcode values are also redefined to group them based on their argument size and format. Support is also added for the matrix multiplication operator "@" (PEP 465).

The .mpy file format moved to version 5 to support the new bytecode encoding, and added support for relocation of native machine code, along with separate rodata and BSS sections. This allows a MicroPython system to import dynamic native modules, .mpy files that are generated from C code. Examples of this feature are provided in "examples/natmod/" and documentation in "docs/develop/natmod.rst".

Some code-size saving optimisations were implemented leading to a reduction in size of minimal firmware: bare-arm reduced by 584 bytes, minimal x86 by 5476 bytes (partly due to changed compiler optimisation flags) and minimal ARM Thumb 2 by 1440 bytes (all measured with gcc 9.2.0).

A new mechanism to freeze scripts into firmware is provided - a frozen manifest - whereby scripts to freeze are listed in a Python file (eg manifest.py). All ports are updated to use this new feature.

When weak module links are enabled (via MICROPY_MODULE_WEAK_LINKS) an import will now automatically search for the built-in u-variant of a module if the non-u-variant fails (eg searches for "ufoo" if "foo" fails), so ports no longer provide an explicit list of these. The unix and windows ports now enable this feature.

A performance benchmarking test suite is added which can be used to compare changes in absolute performance when optimising features, as well as compare across different ports. See "tests/run-perfbench.py".

Bluetooth (BLE only) support is added via the "ubluetooth" module and provides the ability to implement the four BLE roles. The BLE stack is used is Mynewt Nimble and it currently runs on PYBD boards, STM32WB55 MCUs and ESP32 boards.

Support for littlefs filesystems is added through the MicroPython VFS interface, and it works on the unix, stm32, esp8266 and esp32 ports.

A new "machine.ADC.read_u16()" method is defined and implemented on stm32, esp8266, esp32 and nrf ports, providing a consistent way to read an ADC that returns a value in the range 0-65535. This new method should be preferred to the existing "ADC.read()" method.

The stm32 port sees support for the new PYBD range of pyboards which include a fully integrated CYW43xx WiFi/BT chip. USB is enhanced to support VCP+MSC+HID mode and up to 3x simultaneous VCP interfaces. Support is also added for STM32WBxx MCUs including BLE. There is a new machine.ADC class which is compatible with other ports, along with a new machine.Timer class that implements a software timer with millisecond resolution and number of active timers only limited by RAM. Support for littlefs is available by default via uos.VfsLfs2. Documentation for using littlefs is found in "docs/reference/filesystem.rst".

The esp8266 port has switched to use per-board configurations and builds, as well as the new frozen manifest feature. It also has optional littlefs support (requires a separate build).

The esp32 port has the following new features: native code generation, machine.SDCard, hardware I2C, mDNS queries and responder, esp32.Partition, esp32.RMT, BLE (requires IDF v4), and built-in support for VfsLfs2. It has switched to use per-board configurations and builds, and frozen manifests. The default SSL output buffer is resized from 16kiB down to 4kiB to save RAM.

There are new, minimal ports to Microchip SAMDxx microcontrollers, and the bare metal PowerPC architecture.

A code-of-conduct based on the PSF's code is added in CODEOFCONDUCT.md.

The following new Git submodules are added: mbedtls, asf4, tinyusb, mynewt-nimble. And a new third-party library: littlefs.

A detailed list of changes follows.

py core:

nativeglue: make private glue funs all static, remove commented code
nativeglue: remove dependency on mp_fun_table in dyn-compiler mode
obj: optimise small-int comparison to 0 in mp_obj_is_true
nlrthumb: save and restore VFP registers s16-s21 when CPU has them
mkrules.mk: use $(CPP) not $(CC) -E for preprocessor rule
define EMIT_MACHINE_CODE as EMIT_NATIVE || EMIT_INLINE_ASM
persistentcode: fix compilation with load and save both enabled
persistentcode: ensure prelude_offset is always initialised
asmarm: use __clear_cache on Linux/GCC when creating new asm code
nlrthumb: check thumb2 instead of ARM_ARCH_6M
objgenerator: add missing #if guard for PY_GENERATOR_PEND_THROW
asmarm: use __builtin___clear_cache instead of __clear_cache
makeqstrdata.py: allow using \r\n as a qstr if a port requires it
scheduler: rename sched_stack to sched_queue
objstringio: guard bytesio_stream_p struct w/ MICROPY_PY_IO_BYTESIO
objdict: quote non-string types when used as keys in JSON output
builtinimport: populate file when importing frozen or mpy files
runtime: allow to override builtins.import with Python func
modio: call mp_import_name to do resource stream import
allow to pass in read-only buffers to viper and inline-asm funcs
showbc: fix off-by-one when showing address of unknown opcode
implement new sys.atexit feature
objarray: fix amount of free space in array when doing slice assign
modmath: implement math.isclose() for non-complex numbers
introduce MP_UNREACHABLE macro to annotate unreachable code
nlr: use MP_UNREACHABLE at the end of arch-specific nlr_jump funcs
compile: improve the line numbering precision for comprehensions
emitbc: rewrite switch in load_const_tok to reduce code size
emitbc: make all emit_write_bytecode_* funcs take a stack_adj arg
objgenerator: move defn of mp_const_GeneratorExit_obj here
vm: shorten error message for not-implemented opcode
vm: don't add traceback info for exc's propagated through a finally
vm: don't add traceback info for exceptions that are re-raised
add global default_emit_opt variable to make emit kind persistent
compile: improve the line numbering precision for lambdas
bc: factor out code to get bytecode line number info into new func
profile: add initial implementation of sys.settrace feature
integrate sys.settrace feature into the VM and runtime
profile: add debugging for sys.settrace feature
objtuple: allow compatible subclasses of tuple in mp_obj_tuple_get
modstruct: fix struct.unpack with unaligned offset of native type
modstruct: fix struct.pack_into with unaligned offset of native type
binary: change mp_uint_t to size_t for index, size, align args
bc: fix size calculation of UNWIND_JUMP opcode in mp_opcode_format
mkenv.mk: add GDB variable
vm: factor cached map lookup code to inline function
mkrules.mk: add QSTR_GLOBAL_REQUIREMENTS variable for qstr auto-gen
persistentcode: enable persistent code saving for Windows ports
lexer: reorder operator tokens to match corresponding binary ops
parse: use calculation instead of table to convert token to operator
compile: use calculation instead of switch to convert token to op
add support for matmul operator @ as per PEP 465
bc0: order opcodes into groups based on their size and format
bc: replace big opcode format table with simple macro
introduce and use constants for multi-opcode sizes
split RAISE_VARARGS opcode into 3 separate ones
nlr.h: factor out constants to specific macros
emitnative: factor sizeof/offsetof calculations to macros
rename MP_QSTR_NULL to MP_QSTRnull to avoid intern collisions
nativeglue: make mp_fun_table fixed size regardless of config
persistentcode: bump .mpy version to 5
ringbuf: add helpers for put16/get16
bc: change mp_code_state_t.exc_sp to exc_sp_idx
add n_state to mp_code_state_t struct
compress first part of bytecode prelude
rework and compress second part of bytecode prelude
bc: don't include mp_decode_uint funcs when not needed
compile: disallow 'import *' outside module level
makeqstrdefs.py: remove unused blacklist
vm: fix handling of unwind jump out of active finally
runtime: fix PEP479 behaviour throwing StopIteration into yield from
emitnative: add support for archs with windowed registers
emitnative: add support for using setjmp with native emitter
emitnative: add support for archs that cannot read executable data
asmxtensa: add support for Xtensa with windowed registers
add new Xtensa-Windowed arch for native emitter
persistentcode: make .mpy more compact with qstr directly in prelude
objtype: add type.bases attribute
mkrules.mk: add warning/error for invalid frozen config
objstr: size-optimise failure path for mp_obj_str_get_buffer
automatically provide weak links from "foo" to "ufoo" module name
modarray: rename "array" module to "uarray"
runtime: reorder some binary ops so they don't require conditionals
stream.h: add MP_STREAM_POLL_NVAL constant
nativeglue: remove unused mp_obj_new_cell from mp_fun_table
objgenerator: remove globals from mp_obj_gen_instance_t
objgenerator: allow pend_throw to an unstarted generator
persistentcode: move declarations for .mpy header from .c to .h file
modsys: report .mpy version in sys.implementation
emitnative: fix typo, REG_PARENT_ARG_RET should be REG_PARENT_RET
emitnx86: make mp_f_n_args table match order of mp_fun_kind_t
objdict: support ujson.dump() of OrderedDict objects
ringbuf: add peek16 method
compile: coalesce error message for break/continue outside loop
builtinimport: raise exception on empty module name
qstr: raise exception in qstr_from_strn if str to intern is too long
objstringio: slightly optimize stringio_copy_on_write for code size
objenumerate: check for valid args in enumerate constructor
persistentcode: add ability to relocate loaded native code
nativeglue: add new header file with native function table typedef
nativeglue: add funcs/types to native glue table for dynamic runtime
persistentcode: make ARM Thumb archs support multiple sub-archs
nativeglue: add float new/get functions with both single and double
dynruntime: add support for float API to make/get floats
dynruntime: implement uint new/get, mp_obj_len and mp_obj_subscr
persistentcode: move loading of rodata/bss to before obj/raw-code

extmod:

add network-level class binding to cyw43 driver
factor out makefile rules from py.mk to new extmod.mk file
extmod.mk: integrate mbedTLS so it is built from source
modussl_mbedtls: allow to build with object representation D
extmod.mk: include mdns app source in lwIP build
uos_dupterm: add mp_uos_dupterm_poll to poll all dupterms
moduwebsocket: make close_resp static array const to not use RAM
modwebrepl: make prompt/ver static arrays const to not use RAM
modwebrepl: add config option to put filebuf[512] on stack/bss
modlwip: for TCP send keep trying tcp_write if it returns ERR_MEM
modlwip: use mp_sched_schedule to schedule socket callbacks
modlwip: implement raw sockets for lwIP
modure: make regex dump-code debugging feature optional
moducryptolib: use "static" not "STATIC" for inline functions
give vars/funcs unique names so STATIC can be set to nothing
modujson: support passing bytes/bytearray to json.loads
crypto-algorithms: add source to header and populate copyright
vfs_posix: include stdio.h for declaration of function 'rename'
nimble: add nimble bindings
modbluetooth: add low-level Python BLE API
modbluetooth_nimble: implement modbluetooth API with Nimble
modbluetooth_nimble: use random addr if public isn't available
modbluetooth: allow MP_BLUETOOTH_MAX_ATTR_SIZE in board config
modbluetooth: allow config of scan interval/window
modbluetooth: use us instead of ms for advertising interval
modbluetooth: increase maximum connections from 1 to 4
modbluetooth: clear gap_advertise payload when data is empty
modbluetooth: fix order of params to IRQ_GATTS_WRITE event
modbluetooth: improve ringbuf handling
modbluetooth: make gap_disconnect not raise when disconnected
modbluetooth: in gap_advertise only accept None to stop adv
re1.5: support escaping within RE classes
modbluetooth: make UUID support the buffer protocol
modbluetooth: persist reference to NimBLE service instances
modbluetooth_nimble: use data_alloc length to truncate writes
modbluetooth: rename module to "ubluetooth"
factor out block-device struct to make independent of fatfs
vfs_blockdev: factor out block device interface code
vfs_blockdev: add extended read/write methods
add VFS littlefs bindings
vfs: rename BP_IOCTL_xxx constants to MP_BLOCKDEV_IOCTL_xxx
vfs: add MP_BLOCKDEV_IOCTL_BLOCK_ERASE constant
modbluetooth: add gatts_set_buffer
vfs_lfs: allow compiling in VfsLfs1 and VfsLfs2 separately
modlwip: unconditionally return POLLHUP when polling new socket
modlwip: make socket poll return POLLNVAL in case of bad file
modlwip: unconditionally return POLLHUP/POLLERR when polling
modussl_mbedtls: fix getpeercert to return None if no cert avail
modussl_mbedtls: check for invalid key/cert data
nimble: remove unneeded nimble_sprintf wrapper function
nimble: factor out stm32-specific HCI UART RX/TX code
modbtree: make FILEVTABLE const to put it in ROM
convert nlr_raise(mp_obj_new_exception_msg(x)) to mp_raise_msg(x)
vfs: add autodetect of littlefs filesystem when mounting
consolidate FAT FS config to MICROPY_VFS_FAT across all ports
modbluetooth: prioritise non-scan-result events
modbluetooth: create UUID from bytes and allow comparison ops
modbluetooth_nimble: make gap_scan_stop no-op if no scan ongoing
modbluetooh_nimble: fix UUID conversion for 16 and 32 bit values
modbluetooth: simplify management of pre-allocated event data
vfs_lfs: pass flag along to ioctl when init'ing bdev for lfs
vfs_lfs: fix bug when passing no args to constructor and mkfs
modbluetooth: simplify how BLE IRQ callback is scheduled
modbluetooth: remove limit on data coming from gattc data input
modbluetooth: add optional 4th arg to gattc_write for write mode
modbluetooth: allow setting ringbuf size via BLE.config(rxbuf=)
modbtree: use mp_printf instead of printf
add dynamic-runtime guards to btree/framebuf/uheapq/ure/uzlib
webrepl: move webrepl scripts to common place and use manifest

lib:

cmsis: upgrade to CMSIS 5.5.1
netutils: add DHCP server component
add new submodule for mbedtls, currently at v2.17.0
utils/sys_stdio_mphal: add support to poll sys.stdin and sys.stdout
add asf4 as a submodule
add tinyusb as a submodule
stm32lib: update library for updated H7xx, new L0xx, new WBxx
lwip: update lwIP to v2.1.2, tag STABLE-2_1_2_RELEASE
mynewt-nimble: add Apache mynewt nimble as a submodule
littlefs: add littlefs v1.7.2 source
littlefs: add littlefs v2.1.3 source
littlefs: add README describing origin and how to gen lfs1/lfs2
libc/string0: add simple implementations of strspn and strcspn

drivers:

add driver for CYW43xx WiFi SoCs
memory/spiflash: add support to put SPI flash in sleep mode
cyw43: add low-level CYW43xx Bluetooth HCI UART driver
onewire/ds18x20.py: add support for DS1822 sensor
sdcard: raise exception on timeout of readinto
wiznet5k: allow selecting maximum fixed buffer size for MACRAW

tools:

mpy-tool.py: fix linking qstrs in native code, and multiple files
mpy-tool.py: fix linking of qstr objects in native ARM Thumb code
add uf2conv.py from Microsoft/uf2 repository
pyboard.py: add filesystem commands to ls/cat/cp/rm remote files
mpy-tool.py: force native func alignment to halfword/word on ARM
mpy-tool.py: add initial support for frozen with settrace
mpy-tool.py: fix freezing of non-bytecode funcs with settrace
make-frozen.py: allow to run with no directory passed in
add mechanism to provide a manifest of frozen files
makemanifest.py: eval relative paths w.r.t. current manifest file
mpy-tool.py: use "@progbits #" attribute for native xtensa code
makemanifest.py: follow symlinks when freezing linked directories
makemanifest.py: skip freezing unsupported files with warning
makemanifest.py: use sys.executable when invoking Python scripts
mpy-tool.py: support qstr linking when freezing Xtensa native mpy
mpy-tool.py: add ability to merge multiple .mpy files into one
mpy_ld.py: add new mpy_ld.py tool and associated build files
mpy-tool.py: raise exception if trying to freeze relocatable mpy
pyboard.py: support executing .mpy files directly
tinytest-codegen.py: add extra newline and result message

tests:

rename "bench" tests to "internal_bench" and run-internalbench.py
add performance benchmarking test-suite framework
perf_bench: add some benchmarks from python-performance
perf_bench: add some miscellaneous performance benchmarks
perf_bench: add some viper performance benchmarks
stress/recursive_iternext.py: increase large depth to 5000
run-perfbench.py: add --emit option to select emitter for tests
add tests for overriding builtins.import
misc/sys_atexit: add test for new sys.atexit feature
unix: update extra_coverage expected output with new atexit func
extmod: split json.loads of bytes/bytearray into separate test
split out test for optimisation level and line-no printing
add tests for sys.settrace feature
basics: add test for matmul operator
update tests for changes to opcode ordering
micropython: add test for native generators
basics: add test for getting name of func with closed over locals
basics: add test for throw into yield-from with normal return
perf_bench: add bm_fft test
run-perfbench.py: show error when truth check fails
run-perfbench.py: skip complex tests if target doesn't enable it
cpydiff: fix typo in types_bytes_keywords.py doc comments
rename "array" module to "uarray"
extmod: add littlefs tests
extmod: add test for blockdev with standard and extended protocol
basics: use str.format instead of % for formatting messages
basics/builtin_dir.py: look for "version" in dir(sys)
add feature check for bytearray and skip corresponding tests
basics: split out specific bytearray tests to separate files
basics: use bytes not bytearray when checking user buffer proto
add feature check for slice and skip corresponding tests
basics: split out specific slice tests to separate files
run-tests: add misc list of tests that use slice, to skip them
basics: automatically skip tests that use str/bytes modulo-format
add feature check for uio module and skip corresponding tests
basics: split sys.exit test to separate file so it can be skipped
extmod: add test for ussl when passing in key/cert params
stress: add test for maximum length limit of qstrs
import: add test for importing viper code with additional flags
add script to run dynamic-native-module tests
add .exp files for basics/parser and import/import_override
stress/qstr_limit: tune params to run with stm32 port
basics/memoryview_itemsize: make portable to 32- and 64-bit archs
extmod/vfs_lfs_error: use small ints in seek error test
pyb: refactor pyboard tests to work on PYBv1, PYBLITEv1 and PYBD

mpy-cross:

do not automatically build mpy-cross, rather do it manually
main: only accept full emit cmdline options if native enabled
make mpconfigport.h compatible with msvc compiler
add msvc build of mpy-cross
set number of registers in nlr_buf_t based on native arch
enable Xtensa-Windowed native emitter
support armv7em, armv7emsp, armv7emdp architectures
README.md: add notes about -march and -O

all ports:

provide mp_hal_stdio_poll for sys.stdio polling where needed
add new make target "submodules" which inits required modules

minimal port:

use soft float for CROSS=1 Cortex-M4 target
frozentest: recompile now that mpy version has changed
set CSUPEROPT=-Os to get minimal firmware size

unix port:

mpconfigport.mk: update comment about TLS implementations
unix_mphal: use CLOCK_MONOTONIC for ticks_ms/us when available
enable sys.atexit, triggered after the main script ends
main: only accept full emit cmd-line options if native enabled
coverage: add coverage tests for ringbuf
convert to use FROZEN_MANIFEST to specify frozen code
enable module weak links
enable uos.VfsLfs1, uos.VfsLfs2 on coverage build
modtermios: fix output speed setter in tcsetattr

windows port:

mpconfigport.h: define empty MP_WEAK symbol
mpconfigport.h: don't define restrict/inline/alignof for C++
msvc: treat compiler warnings as errors
Makefile: make use of CFLAGS_EXTRA, LDFLAGS_EXTRA and SRC_MOD
msvc: remove unneeded definitions for qstr generation
msvc: move build options from .vcxproj to .props files
msvc: enable overriding directories used in the build
msvc: change the way sources are listed
default to binary mode for files
enable module weak links

qemu-arm port:

add testing of frozen native modules
convert to use FROZEN_MANIFEST to specify frozen code
add ldscript dependency in the final firmware.elf target
let tinytest.o be built by standard build rules
Makefile: allow overriding CROSS_COMPILE from another makefile

stm32 port:

usb: refactor CDC VCP code to enable N CDC interfaces
usb: support up to 3 VCP interfaces on USB device peripheral
boards/make-pins.py: allow pins.csv to skip or hide board-pin name
boards/pllvalues.py: search nested headers for HSx_VALUE defines
boards: add board definition files for PYBD -SF2, -SF3, -SF6
modpyb: add pyb.country() function to set the country
extint: add extint_set() function for internal C access to EXTI
mphalport: add support for having MAC in OTP region
add low-level SDIO interface for cyw43 driver
integrate in the cyw43 driver and network.WLAN class
boards/PYBD_SFx: enable CYW43 WLAN driver
modnetwork: replace generic netif NIC polling with specific code
integrate optional mbedTLS component for ussl module
boards/PYBD_SFx: enable ussl module using mbedTLS
support optional lwIP mDNS responder
lwip_inc: update to enable mDNS, TCP listen backlog, faster DHCP
usbd_msc: rework USBD MSC code to support multiple logical units
usbd_msc: provide custom irquiry processing by MSC interface
usbd_msc: provide Mode Sense response data in MSC interface
usb: use ARG_xxx enums to access kw args in pyb_usb_mode
usb: add "msc" kw-arg to pyb.usb_mode to select MSC logical units
usbd_msc: allow to compile when USB enabled and SD card disabled
in link script, define start of stack separately from heap end
boards: enable ussl module via mbedtls for boards with network
Makefile: print info messages about use of mboot/QSPI flash
enter bootloader via a system reset
boards/pllvalues.py: support HSx_VALUE defined without uint32_t
boards: add stm32??xx_hal_conf_base.h files with common settings
boards: rework all stm32??xx_hal_conf.h files to use common code
usb: fix regression with auto USB PID value giving PID=0xffff
boards: optimise flash and RAM allocation for L4 boards
mpu: add helper functions for configuring MPU
eth: use MPU helper functions to configure MPU for ETH use
sdram: use MPU helper functions to configure MPU for SDRAM use
qspi: use MPU to allow access to valid memory-mapped QSPI region
qspi: force a reset of the QSPI peripheral when initialising it
qspi: handle bus acquisition
powerctrl: add hooks for a board to perform actions on sleep/wake
boards/PYBD_SFx: put SPI flash to sleep during sleep modes
mpconfigport.h: enable useful networking modules if lwIP enabled
usb: add support to auto-detect USB interface, either FS or HS
usb: add "port" keyword argument to pyb.usb_mode, to select FS/HS
spi: factor out code to calculate SPI source frequency
extint: simplify bitband support config for different MCUs
modmachine: make RTC class available in machine module
boards/PYBD_SF2: put mbedtls library code in external QSPI flash
update components to work with new H7xx HAL
Makefile: remove Wno-attributes for ll_usb HAL file
Makefile: use startup_stm32*.s file from stm32lib
boards: remove startup_stm32*.s files now they are in stm32lib
mpu: include MPU functions when ETH is enabled
lwip_inc: define LWIP_NO_CTYPE_H=1 to use lwIP ctype funcs
modmachine: disable IRQs before entering bootloader
boards/PYBD_SFx: configure EN_3V3 pin as output on boot
sdcard: add hook for a board to power on SD/MMC
boards/PYBD_SFx: automatically turn on EN_3V3 when powering SD/MMC
add initial support for STM32L0xx MCUs
boards: add MCU support files for STM32L072
mpconfigport.h: make "framebuf" module configurable by a board
boards/NUCLEO_L073RZ: add definition files for new board
powerctrl: move L0's SystemClock_Config to powerctrlboot.c file
powerctrl: move F0's SystemClock_Config to powerctrlboot.c
remove SystemInit funcs, use stm32lib versions instead
boards/NUCLEO_F446RE: enable DAC
add support for STM32L452 MCUs
boards/NUCLEO_L452RE: add definition files for new board
boards/NUCLEO_F413ZH: remove STARTUP_FILE, it's defined globally
mboot: make _estack an array to avoid compiler warnings
mboot: remove use of BSRRL/H for H7 MCUs due to stm32lib update
mboot: use STARTUP_FILE from stm32lib
mboot: update dependencies to enable parallel build with -j
boards/B_L072Z_LRWAN1: add definition files for new board
gccollect: always use MP_STATE_THREAD(stack_top) to get stack top
usb: add config options to disable USB MSC and/or HID
usbd_cdc_interface: make CDC TX/RX buffer sizes configurable
add support for USB on L0 MCUs
powerctrlboot: increase SYSCLK to 32MHz for L0 MCUs
mphalport: fix GPIO clock enable for L0 MCUs
Makefile: allow a board to disable float support
boards/B_L072Z_LRWAN1: enable USB VCP support
boards/STM32F769DISC: fix length of FLASH_APP section
make-stmconst.py: allow more variation in parens and int-suffix L
add initial support for STM32WBxx MCUs
boards: add MCU support files for STM32WB55
boards/NUCLEO_WB55: add definition files for new board
boards/USBDONGLE_WB55: add definition files for new board
flashbdev: support internal filesystem on STM32F722/23/32/33
boards/stm32f722.ld: provide memory regions for internal FS
boards/NUCLEO_F722ZE: add definition files for new board
dma: fix re-start of DMA stream by clearing all event flags
usbd_hid_interface: rewrite USB HID interface code
boards/xxx_WB55: enable USB HID now that it works on WB MCUs
usbd_hid_interface: include extra header to build with threading
lwip_inc: enable raw socket type
mpconfigport.h: enable lwIP raw sockets
sdcard: support configuring the SD/MMC bus width to 1 or 4 bits
modpyb: support building with PY_PYB_LEGACY on and HW_USB_HID off
usbd: introduce MICROPY_HW_USB_IS_MULTI_OTG to simplify USB config
usbd: support USB device mode on STM32L432 MCUs
boards/NUCLEO_L432KC: add config for USB VCP support
usbd: make USB device FIFO sizes dynamically configurable
i2c: fix generation of restart condition for hw I2C on F0/F7
mphalport: put PYBD specific MAC code in board specific file
mboot/Makefile: define "BUILDING_MBOOT" when building mboot
boards/PYBD_SF2: exclude certain things when building mboot
extint: fix EXTI mapping of PVD and RTC events for H7 MCUs
stm32_it: include correct EXTI interrupt handlers for L0 MCUs
dma: fix DMA config for L0 MCUs
powerctrl: fix machine.bootloader() for L0 MCUs
machine_adc: add machine.ADC class
machine_adc: improve operation of ADC for H7, L4 and WB MCUs
boards/stm32wb55_af.csv: fix ADC pin-channel function mapping
mboot: support boards with only two LEDs
boards/NUCLEO_L073RZ: fix typo in MCU name
boards/MIKROE_CLICKER2_STM32: add MikroElektronika Clicker2 board
boards/STM32F769DISC: fix number of SDRAM row bits
board/NUCLEO_F746ZG: enable Ethernet periph, lwip and ussl
usb: add support for VCP+MSC+HID mode, incl 2xVCP and 3xVCP
usb: verify number of used endpoints doesn't exceed maximum
lwip_inc: allocate additional MEMP_SYS_TIMEOUT when mDNS enabled
lwip_inc: enable LWIP_NETIF_EXT_STATUS_CALLBACK for mDNS
machine_adc: fix build for F4 and L4 MCUs that only have ADC1
modusocket: fix NULL deref when accept() an unbound socket
machine_i2c: add ability to specify I2C(4) by name
can: factor CAN driver into low-level and Python bindings
add support for FDCAN peripheral, exposed as pyb.CAN
boards/NUCLEO_H743ZI: enable FDCAN on this board
use mp_printf with MICROPY_ERROR_PRINTER for uncaught exceptions
can: guard header file by MICROPY_HW_ENABLE_CAN
usbd_cdc_interface: add CTS flow control option for USB VCP
support disabling the compiler
powerctrlboot: fix clock and PLL selection for HSI48 on F0 MCUs
powerctrlboot: add support for HSI at 8MHz on F0 MCUs
uart: add RTS/CTS pin configuration support to UART4
provide port-specific implementation for Nimble on STM32
mpconfigport.h: add modbluetooth module to stm32
boards/PYBD: enable BLE for Pyboard D
system_stm32: support selection of HSE and LSI on L4 MCUs
boards: enable MICROPY_HW_RTC_USE_LSE on L4 boards
{adc,machine_adc}: change ADC clock and sampling time for F0 MCUs
usbdev: fix compile error if MICROPY_HW_USB_CDC_NUM is set to 2
boards/PYBD_SF2: put nimble library in external QSPI XIP flash
extract port-specific Nimble implementation
mboot: add option to automatically reset when USB is disconnected
sdcard: support boards with no SD card detect pin
use hardware double sqrt on F7/H7 MCUs
boards: add new board ADAFRUIT_F405_EXPRESS
convert to use FROZEN_MANIFEST to specify frozen code
adc: update ADC driver to work with the new H7 HAL
adc: remove unused macro and channel check, and fix spacing
adc: use IS_CHANNEL_INTERNAL macro to check for internal channels
adc: fix sampling for internal channels on H7 MCUs
mpu: save and restore the IRQ state when configuring MPU
accel: rename MMA I2C macro constants to make it generic
accel: add support for KXTJ3
boards: add NADHAT_PYB405 board
accel: fix Accel.read() method so it does read a byte
powerctrlboot: fix config of systick IRQ priority on F0/L0/WB MCU
sdram: fix to use new mpu_config_start/mpu_config_end signature
Makefile: only enable hardware sqrt on parts that support it
timer: fix Timer.freq() calc so mult doesn't overflow uint32_t
add soft timer implementation, using SysTick at 1ms resolution
add machine.Timer with soft timer implementation
add support for RF coprocessor on WB55 MCUs
boards: enable support for bluetooth on WB55 boards
mpthreadport: include runtime.h to get defn of mp_raise_msg
boards/stm32f405_af.csv: fix typo in ETH_RMII_REF_CLK on PA1
nimble_hci_uart.c: prevent scheduler running during CYW-BT wakeup
generalise flash mounting code so it supports arbitrary FS
storage: make pyb.Flash configurable, and support ext block proto
main: auto detect block device used for main filesystem
moduos: add VfsLfs1 and VfsLfs2 to uos module, if enabled
boards: enable LFS2 on PYBv1.x and PYBD boards
storage: change storage_read/write_blocks to return int type
storage: make start/len args of pyb.Flash keyword only
qstrdefsport.h: remove unused qstrs and make USB ones conditional
boards/NUCLEO_L073RZ: skip board-pin names for CPU only pins
main: fix auto creation of pyb.Flash on boot with kw-only args
mpconfigport.h: use IRQ_PRI_PENDSV to protect bluetooth ringbuf
uart: add support for UART4/5 on L0 MCUs
boards/xxx_WB55: enable littlefs2 on WB55 boards
main: fix SKIPSD file detection so SD card is mounted by default
Makefile: enable max buffer size on W5200 NIC when used with lwIP
modusocket: handle case of NULL NIC in socket ioctl
boards/PYBD_SF2: configure LEDs as inverted, for LED.intensity()
boards/NUCLEO_F767ZI: add pins and config for using an SD card
boards/NUCLEO_F767ZI: update pins, peripherals and total flash
boards/NUCLEO_H743ZI: add extra pins and peripheral definitions
timer: add missing TIM 1/15/16/17 IRQ handlers for H7 MCUs
boards/PYBD: include webrepl helper scripts in frozen manifest

esp8266 port:

uart: fix invalid ringbuf name when event driven REPL enabled
provide custom machine_time_pulse_us that feeds soft WDT
mpconfigport.h: enable lwIP raw sockets
machine_uart: allow remapping UART TX/RX pins from 1/3 to 15/13
put new profile code in iROM
machine_adc: rename pyb_adc_* to machine_adc_*
machine_adc: add read_u16 method and refactor
add per-board configs, following other ports
modules/ntptime.py: always close socket, and set day-of-week
convert to use FROZEN_MANIFEST to specify frozen code
allow building without a manifest
boards: add manifest_release.py with files for a release
modules/flashbdev.py: support extended block protocol
moduos: add optional support for VfsLfs1 and VfsLfs2

esp32 port:

machine_timer: reuse Timer handles, deallocate only on soft-reset
add machine.SDCard class using built-in HW SD/MMC controller
update to use ESP IDF v3.3-beta3
modnetwork: still try to reconnect to WLAN even with AUTH_FAIL
Makefile: include all driver/*.c source files in the build
network_ppp: add ppp_set_usepeerdns(pcb, 1) when init'ing iface
add support for hardware I2C
Makefile: fix path expansion for ESPIDF_DRIVER_O
Makefile: put OBJ and LIB rule additions in gen_espidf_lib_rule
Makefile: simplify include of IDF source by using wildcards
pin MicroPython tasks to a specific core
Makefile: include CFLAGS_EXTRA in CFLAGS definition
network_ppp: add authentication support to the PPP interface
add support for mDNS queries and responder
modules: on initial setup mount internal flash at root
add per-board configs, following other ports
add esp32.Partition class to expose partition and OTA funcs
add 'config' function to network.LAN, reusing network.WLAN
Makefile: fix subst->patsubst in ESPIDF_BOOTLOADER_SUPPORT_O
machine_adc: add ADC.read_u16() method
update to use ESP IDF v3.3
boards/TINYPICO: switch to use QIO and 80MHz for SPI interface
add VFS FAT partition to partitions.csv and mount it as the FS
add support for ESP32-D2WD with 2MiB internal flash
modules/inisetup.py: use bdev.ioctl instead of bdev.SEC_SIZE
Makefile: add SDKCONFIG_H to QSTR_GLOBAL_REQUIREMENTS
support building with ESP IDF 4.0-beta1
add check to Makefile for pyparsing version
add check to Makefile that the toolchain is in PATH
main: use both 3.3 and 4.0 config vars to enable SPIRAM
Makefile: fix printing of supported git hash
enable native emitter
implement BLE using Nimble from IDF 4.x
boards: enable BLE by default when building with IDF 4.x
add 4.x version of IDLE WDT config
run NimBLE on the app core
convert to use FROZEN_MANIFEST to specify frozen code
machine_uart: add ability to invert UART pins
boards: split out CPU frequency config, make 160MHz the default
machine_hw_spi: fix exception msg when host is already in use
Makefile: add correct arch to MPY_CROSS_FLAGS for native code
remove unused "esponewire.c" in favour of extmod/modonewire
esp32_partition: support extended block protocol
moduos: enable uos.VfsLfs2 for littlefs filesystems
boards/sdkconfig.base: resize SSL output buffer from 16 to 4kiB
rtc: set system microseconds when setting time via RTC.datetime()
machine_rtc: make RTC.memory size and availability configurable
machine_rtc: reduce memory footprint of user mem functionality
boards: enable ULP in base sdk configuration
boards/TINYPICO: add tinypico.py, dotstar.py with custom manifest
esp32_rmt: add initial support for RMT peripheral

javascript port:

enable support for frozen bytecode via FROZEN_MPY_DIR

nrf port:

led: adjust how board LEDs are defined
clean up source by removing tabs, trailing spaces, non-ASCII chars
machine/adc: add ADC.read_u16() method
add ADC channel mapping to alt function table
machine/adc: allow to pass a Pin object in to ADC constructor
machine/adc: fix mapping of ADC channel to pin
boards/make-pins.py: fix gen of board pins to use correct index
Makefile: add support for flashing with a Black Magic Probe
boards: add Particle Xenon board configuration (an nRF52840)
boards: add board definition for uBlox Nina B1 series BLE modules
i2c: add support for TWIM (EasyDMA)
temp: move module configuration guard
uart: add support for UARTE (EasyDMA)
flash: update flash driver to use nrfx_nvmc driver
led: expose public API for LED manipulation
main: update the way the LED is used on startup
add support to activate MICROPY_PY_SYS_STDFILES
device: correct SPIM3 IRQ handler entry for nrf52840
add tinyusb support for nrf52840
boards: add support for pca10059
add nrf9160 base support
boards: add nrf9160 pca10090 board
main: execute boot.py/main.py frozen modules without a file system
boards/particle_xenon: enable USB CDC on Particle Xenon board

powerpc port:

add initial port to bare metal PowerPC arch

samd port:

add new port to Microchip SAMDxx microcontrollers
make common linker scripts, rename board.mk to mpconfigboard.mk
boards: add Adafruit Feather M0 Express board configuration
boards: add Mini SAM M4 board configuration
add minimum config for Atmel SAMD21-XPLAINED-PRO board

zephyr port:

main: use mp_stack API instead of local pointer for stack top

docs:

machine: add initial docs for new machine.SDCard class
library/framebuf: add missing module reference in example code
library/sys: add documentation for sys.atexit function
pyboard: update name of mounted volume to match code
pyboard: clarify initial files on pyboard and fix up formatting
library: document that sys.version_info returns a 3-tuple only
pyboard: emphasize the instructions for making a USB mouse
reference/speed_python: update that read-only buffers are accepted
reference/speed_python: add missing self to var caching example
library/pyb.DAC.rst: correct frequency for triangle mode output
rename machine.ADC docs to machine.ADCWiPy
library: specify new machine.ADC class
library/pyb.rst: update docs for pyb.usb_mode() function
library/pyb.rst: update pyb.usb_mode() to mention VCP+MSC+HID
library/pyb.USB_VCP.rst: add info about id and flow params
develop/qstr.rst: add documentation for string interning
library/bluetooth: add initial BLE documentation
reference/glossary.rst: add new terms and reduce complexity of old
library/bluetooth.rst: clarify gap_advertise adv_data behavior
library/bluetooth.rst: explain how to increase char buffer size
library/bluetooth.rst: fix typo in HR/UART services example
esp8266/tutorial: make http_get sample function self contained
library: clarify relation between machine and port-specific mods
esp8266: add ntptime usage to esp8266 quickref
fix spelling in various parts of the docs
wipy/tutorial: link Blynk examples to the official library
library: rename "array" module to "uarray"
library/bluetooth: rename to "ubluetooth"
move ubluetooth under "MicroPython-specific libraries"
library: add documentation for extended block device protocol
library/ubluetooth: add docs for gatts_set_buffer
conf.py: fix path to favicon.ico
templates/topindex.html: replace usage of deprecated defindex.html
library/machine.SDCard.rst: fix various typos
library/ubluetooth: fix name and link to FLAG_xxx constants
reference: add docs describing use of pyboard.py
library: add docs for pyb.Flash class
add littlefs docs and a filesystem tutorial
reference/filesystem: fix typo in block device code example
reference/filesystem: add note and example about using filesystem
library/ubluetooth: add note about API being under development
library/uos: add notes and links about littlefs failures
library/uos.rst: clarify why the extended interface exists
esp8266/quickref: add note that machine.RTC is not fully supported
reference: add documentation describing use of .mpy files
develop: add documentation on how to build native .mpy modules
esp32: add quickref and full docs for esp32.RMT class

travis:

build PYBD_SF2 board as part of the stm32 job
selectively fetch git submodules only when needed
build esp8266 firmware as part of Travis CI
build esp32 firmware as part of Travis CI
enable performance benchmark tests on standard unix build
add samd port to Travis build
build stm32 mboot for PYBD_SF6 as part of CI
switch unix stackless build to use clang
build an stm32 board with threading enabled to test it with CI
add new job to test unix port with sys.settrace enabled
add ESP32 build with IDF v4
build more stm32 boards to cover all supported MCUs
build unix nanbox with PYTHON=python2
add BLE submodules to ESP32 IDF4 build
add esp8266 GENERIC_512K build to CI
use "make submodules" to init required modules for each port
add job to build and test unix minimal port
add tests for building and importing dynamic native modules
build urandom native module in coverage job

examples:

bluetooth: add basic BLE peripheral examples
bluetooth: use UUIDs directly to add services to adv payload
bluetooth/ble_uart_peripheral.py: add usage demo
embedding: replace symlink of mpconfigport.h with real file
bluetooth/ble_uart_peripheral: use append mode for RX char
embedding: remove obsolete fatfs files from build
bluetooth: add helpers for decoding advertising payloads
bluetooth: add example for reading temperature sensor
natmod: add btree example
natmod: add uheapq example
natmod: add uzlib example
natmod: add framebuf example
natmod: add ure example
natmod: add features1 and features2 examples
natmod: add urandom native module example
network: add testing key/cert to SSL HTTP server example
natmod: add very simple features0 example to compute factorial

miscellaneous:

top: add CODEOFCONDUCT.md document based on the PSF code of conduct
gitignore: put build-*/ pattern in top-level gitignore file
gitattributes: mark *.a files as binary

micropython/micropython v1.12 PYBD boards, BLE and littlefs, dynamic native modules, samd and powerpc on GitHub

micropython/micropython v1.12
PYBD boards, BLE and littlefs, dynamic native modules, samd and powerpc

on GitHub