Changes since 2.7.1 (to 2.7.2)

Boot

• Xmc flash 2 (#7317) (fixes #6725 #7277)

Core

• Add namespace to FS references in CertStore (#7413)
• For UMM_CRITICAL_METRICS fixed time_stats initializer. (#7390)
• Add a "-- CUT HERE --" marker to exception output (#7369)
• CallbackList API: improve to facilitate executer to know the number of active callbacks (#7361)
• umm_malloc manual merge with upstream (#7337)
• Fix sign in configTime(tz,dst,) (#7320)
• Bring SPIFFS up to latest version (#7276)
• Allow non-aligned PSTR() (#7275)
• Crypto: Add required BearSSL include in header (#7310)

Build system

• Use a prebuild, portable Python3 for OSX (#7348)
• Recognize MSYS(MINGW) as Windows for toolchain get (#7358)
• elf2bin.py objcopy cleanup (#7351)

Libraries

• WiFiMulti: Ability to set connect timeout in WifiMulti->run (#7420)
• BearSSL: Add namespace to FS references in CertStore (#7413)
• httpclient: fix error meaning (#7401)
• EspSoftwareSerial 6.8.5: fixes parity for TX with odd word size modes (#7399, #7367, #7354)
• Add ESP8266WebServerTemplate::enableCORS(bool _ec) (#7388)
• SPI: abs -> std::abs and cast fixes (#7362)
• Fix oversight for ap gw (#7366)
• ESP8266WiFiAP: fix IP address in some cases (#7363)
• LittleFS: Return FALSE on seek past EOF (#7324)
• Webserver: Flash size reduction for mime-type (#7312)
• BearSSL: Allocate stack for SigningVerifier (#7291)
• ESP8266HTTPClient fixes (#6476)

Examples

• Update GitHub cert fingerprint in example (#7397)
• Multi-client Server Sent Event (aka EventSource) demo (#7012)
• Webserver: Graph example (#7299)

Documentation

• Add some pending methods to generic-class docs (#7427)
• doc fixes for LittleFS (#7385)
• Fix typo in readme.rst (#7379)
• Add documentation on recovering from deep sleep with WAKE_RF_DISABLED (#7338)
• Add FTP client/server lib link (#7336)
• Document ESP.getMaxFreeBlockSize() != max malloc size (#7328)

Boards

• modwifi: I2C pin assignment fix (#7416)

Building on host

• emulation on host: option for FS persistence location (#7424)
• emulation on host: FS: minor reset fix (#7417)
• emulation on host: missing mock functions, improve host interface handling (#7404)
• emulation on host: lwIP always receive multicast packets, enable and fix multicast udp server (#7386)
• emulation on host: fix binding from a particular interface (#7372)
• emulation on host: various fixes (#7355)

Changes since 2.7.0 (to 2.7.1)

Hotfixes

• Revert XMC changes in eboot that were causing OTA failure (#7277)
• Revert MDNS listen the current iface causing MDNS death (#7266)

Core (FS)

• Deprecate SPIFFS, move examples to LittleFS (#7263)

Documentation

• Document USTX in USS/UxS not working as expected (#7265)

Changes since 2.6.3 (to 2.7.0)

Breaking Changes

None

Great additions

• Allow GZIP compressed flash updates (#6820)
• Add CryptoInterface library (#6961, #7252)

Core

• Added missing "if (umm_heap == NULL) {..." to umm_free_heap_size_lw (#6929)
• Code size optimisations for ESP.getFullVersion() (#6936)
• I2C: allow clocks below 100KHz (#6934)
• Reduce mem footprint of ESP.getResetInfo() (#7030)
• Code size optimisation of ESP.getResetReason() (#7029)
• Low-Power demo (#6989)
• Fix WMath's map() implementation for inverse/round-trip mapping (#7027)
• Fix optimistic_yield to not yield on each call after x µs (#6804)
• Updated stack offsets for postmortem stack dump (#7066)
• Corrected stack start and end in stack_thunk_dump_stack() (#7085)
• configTime(tzsec,dstsec,): fix UTC/local management (#6993)
• dtostrf: round fix (#7068, #7093)
• simple TZ api: bypass sprintf/sscanf (= do not use 7KB flash) (#7109)
• Pull GPIO initialization into its own 'weak' function. (#7044)
• Attribute __real_system_restart_local() as (noreturn) (#7167)
• Move floating point from libgcc out of IRAM (#7180, #7188)
• Tone: extend to 20KHz (#7179)
• Add CryptoInterface library (#6961, #7252)
• Fix for MD5 leak bug (#7197, #7208)
• Use F_CPU if (?) CPU frequency switch is compile-time only (#6833)
• expose setTZ() (#7234)
• XMC flash support - WIP (#6725)
• Allow waveforms to be specified in clock cycles (#7211)
• Waveforms: cherry pick nice changes from ongoing #7122 (#7218)
• Allow stopWaveform to stop timed-out waveforms (#7236)
• Hold transmitter in reset during rate change (#7248)
• Fix minor GCC10 static analyzer warnings (#7255)

Core (FS)

• Skip . and .. on LittleFS::dir::rewind() (#6959)
• Only update LittleFS timestamp when opened write (#6956)
• Update LittleFS to latest upstream head (#6986)
• Add SDFS::Dir::fileTime callback (#6985)
• Add LittleFS support to ESP8266WebServer.serveStatic() (#6987)
• Fix boolean/logical & mixup in LittleFS open (#6996)
• Add fileCreation/getCreation create-time accessors (#7000)
• Improve LittleFS support (#7071)
• Update to LittleFS v2.2.0 (#7240)

Network (Core, Library/ESP8266WiFi)

• lwip2: no more git sub-sub-module deps, faster checksum, backlog limitation and other fixes (#6887)
• Fix/enable UDP packet reassembly (#7036, #7132)
• SNTP: backport espressif sntp api for lwip2 (#7097)
• TCP: fixes backlog limit handling, and allows ephemeral TCP connections (#7096)
• lwip2 update: stop dhcp when interface goes down (#7114)
• Fix UDP send to IPv6 link local addresses (#6541)
• Fix TCP send to IPv6 link local addresses (#7207)
• Updating _port to really used port and made _port accessible (#7003)
• Make DNS resolution order selectable during runtime or compile time (#6865)
• WiFi: ARP gratuitous API for wifi station mode (#6889, #7203)
• fix null pointer call from WiFiClient::localIP() to IPAddress (#7221)

Library - ESP8266WiFi (SSL/TLS)

• Update BearSSL, increase SSL stack (#6980)
• Remove memory leak on multiple calls to initCertStore (#7021)
• Update to latest BearSSL (#7098)
• Abort if BearSSL stack allocation fails (#7152)

Flashing - OTA - Updater

• Allow GZIP compressed flash updates (#6820)
• Add documentation for compressed OTA, fix bug (#6924)
• Add a CRC32 over progmem and ESP.checkFlashCRC (#6566)
• Fix Updater potential overflow, add host tests (#6954)
• allow ".bin.gz" filter in HTTP updater file selector (#7026)
• Updater: prevent closing webserver (option) (#6969)
• Use 2nd stack for update signature verification (#7149)
• Fix espota completion success/fail check (#7204)

Library - SoftwareSerial

• EspSoftwareSerial release 6.8.1 (#6922, #6932, #6943, #7034, #7133, #7139, #7205)

Library - ESP8266WebServer

• PROGMEM footprint cleanup for responseCodeToString (#6950)
• Fix search order for index.htm(l)(.gz) files (#7069)
• Add Uri with support for regexUri and globUri (#6696)
• Add flash helper constructor to Uri (#7105)
• Expose webserver's chunk api (#7134)
• Make getContentType available for 3rd party usage (#7254)

Library - ESP8266HTTPClient

• Reduce temporary string creation in HTTPClient::sendHeader (#6937)
• Move a couple larger strings from rodata to flash (#6976)
• clear _canReuse in setUrl if its not a local redirect (#7039)
• Fixes large payload issues for sendRequest (#7051)
• Better follow redirection for HTTPClient (#7157)

Library - mDNS

• Update LEAmDNS.cpp (fix issue #6982) (#7025)
• use STA as default interface in mDNS (#7042)
• Additions to UdpContext needed for LEAmDNS2 (#7048)
• mDNS: protect MDNSResponder::queryService against misuse (#7216)
• Add isRunning getter to check is ::begin already called (#7219)
• Changing listen to listen the current iface only instead of 0 (#7217)

Library - Servo

• Define MAX_SERVOS to 12, like original Servo.h (#6999)

Libraries

• Various String handling cleanups (Libraries&Core) (#6945)
• Set a value for SSDP notify interval (#7110)

Documentation

• Installation guide for PlatformIO (#7142)
• Fix RST links for PlatformIO (#7143)
• (STA) Fixed misplacement of back quotes (#7247)

CI

• Fix Windows CI build (#6927)
• fix CI: switch to python3 for pio (#7035)
• update to new prebuilt win sed version (#7062)
• Switch espressif8266 platform to development branch in PlatformIO build (#7170)
• fix style checking: (#7222)

Examples

• CaptivePortal: improve HTML quality (#7227)
• ESP8266WebServer: Revamp of the FSBrowser and SDWebServer examples (#7182)

Boards

• Made changes to include "ESP8266_" with ITEAD board names, {build.board}, (#7024)
• Add support for eduino wifi (#6554)
• Add 2MB obtion to 8285 generic board (#7163)
• esp8285: properly initialize free gpio as input (#7165)

Build System

• Add back mklittlefs for linux32 target (#7011)
• Use a python3 script to call python3 (#6960)
• boards.txt.py: Use correct file name when writing (#7018)
• PIO: Allow using custom linker scripts (#7078)
• package builder: updates for alpha releases (#7088)
• Switch espressif8266 platform to development branch in PlatformIO build (#7170)
• Use F_CPU if (?) CPU frequency switch is compile-time only (#6833)

Device tests

• device tests: some of them can be run on host (#6912)
• Add test for FS::open("w+") (#7241)

Boot

• eboot: fix linking and padding (#7047)
• Allow GZIP compressed flash updates (#6820)

Building on host

• host build: optimistic_yield() wrongly delays() instead of avoiding excessive yields (#6802)