Releases · esp8266/Arduino (original) (raw)

Release 3.1.2

Release 3.1.2 Notes

Second patch release (includes 3.1.1 and 3.1.0)

Core

• Fix weak assignment in flash_hal.h (#8884)
• Remove stale patch required for older SDK releases (#8858)
• Show 'Exception' cause and 'epc1=...' address when interrupted by Soft WDT (#8851)
• Issue warning when reallocating String buffer too much (#8821, #8849)
• Fix stack offset and division-by-zero origin in postmortem message (#8839)
• IPAddress: Properly handle u8 pointers when assigning and comparing (#8818)

Build system

General

• Don't use -g++ or -gcc suffixes in command line arguments (#8829)
• Log all exceptions in upload.py (#8813)

mkbuildoptglobals.py

• Assert python version (#8886)
• Resolve Windows path encoding problems (#8860)
• Fix not finding preferences.txt (#8814, #8812)

Libraries

• Ethernet: fix library.properties (#8880)
• EspSoftwareSerial 8.0.1: onReceive bug fix and new namespace (#8869)
• Make http-server less verbose in debug mode (#8850)
• SdFat: Fix long operations triggering watchdog (#8844)
• LowPowerDemo: Fix typo (#8841)
• SdFat: FS HAL mode fixes & test (#8833)
• Ticker: Safeguard for internal storage that may be changed during callback execution (#8820)
• HTTPClient example: Fix typo (#8819)
• Basichttpsclient example: fingerprint handled by update scripts (#8311)

Documentation

• Expand the hardware debugging limitations section (#8879)

CI

• Emulation on host: fix UDP seek&peek (#8827)

Release 3.1.1 Notes

Core

• Transparently manage recurrent scheduled functions in delay() (#8802)
• Fix C builds when including coredecls.h and / or core_esp8266_features.h (#8795)
• Typo in EAP patch (#8797)
• Fix clang warnings related to constexpr usage (#8796)
• Fix printf format in Updater debug messages (#8791)

Examples

• Remove 400b stack allocation from Advanced Web example (#8793)

Build system

• Also apply #8226 portable python fix to mkbuildopts script (#8804)
• Attempt to fix elf2bin.py not always working on Windows (#8799)

CI

• Document updating the GitHub deployment keys (#8790, #8792)

Release 3.1 Notes

Great additions

• NONOS SDK 3.0.5 (#8736, #8746, #8755, #8770)
• Support for global build defines and options for Arduino IDE (#8504)
• WPA2-Enterprise (#8529, #8566)
• (experimental) Flash-size agnostic builds (#6690)

Additions

• DHCP custom option(s) for DhcpServer (#8582)
• Updater lifetime callbacks (#8653)
• Add WiFiClient::abort() (#8738)

Notable changes

• hostByName timeout fixes (#8787)
• PHY status API for ethernet drivers (#8784)
• Update to EspSoftwareSerial 7.0.0 (#8781)
• Keep Servo in the same position after re-attaching (#8753)
• Fix WiFiClientSecure remoteIP(), remotePort(), localIP(), localPort() functions (#8693)
• mDNS - valid board for _adruino._tcp service (#8634)
• Allow longer delays for Ticker (#8625)
• ArduinoOTA and ESP8266HTTPUpdate no longer stop all WiFiClient/WiFiUDP (#8598)
• WiFiServer - rename available() to accept(), deprecate available() (#8419)
• Avoid out-of-bounds reads in String (#8463, #8597)
• Fix compilation issues and update toolchain (#8393, #8613)
• Update to SdFat 2.1.1 with UTF-8 support (#8355)
• lwIP v2.1.3 + various fixes (#8319, #8596)
• WiFiServer - 'rename' available() to accept() (#8419)
• WiFiServer - don't inherit from Server class (#8418)
• I2C clock phase correction in START condition (#8383)
• MMU functions strict aliasing fixes (#8290)
• Add FSTools with examples of how to convert between SPIFFS and LittleFS (#7696)
• Rename esp_yield() to esp_suspend(), update esp_yield() to also call esp_schedule() (#7148)

Breaking changes

None

Changes

SDK

• Added NONOS SDK 3.0.5 (#8736, #8770)
• Resolve flash address issues with SDK 3.0.x (#8755)
• Heap addendum to handle changes in NON-OS SDK 3.0.x (#8746)
• Fix missing NONOS SDK 2.2.x 19-03-13 (#7965, #8363)

Core

• Fix flashinit panic not printing (#8762)
• Fix Stream::parseFloat() (#8785)
• Added missing DRAM fallback to pvPortCallocIram, pvPortZallocIram, and (#8765)
• Fix pre-SDK Cache_Read_Enable for PUYA flash (#8658)
• OTA: Updater lifetime callbacks (#8653)
• Nice stack smashing postmortem message (#8670)
• Ensure xPortGetFreeHeapSize reports DRAM (#8680)
• SPI: writePattern() should not call setDataBits(0) (#8636)
• Correctly handle unaligned address in EspClass::flashWrite u8 overload (#8605)
• Add esp_is_8285(), check for ESP8285 at runtime (#8604)
• Allow to use temporary strings in configTime (#8606)
• Allow UART1 to be inverted (#8601)
• Avoid reading past end of non-zero terminated char arrays (#8597)
• Fix DTR offset value (#8586)
• WString: remove operator==(const __FlashStringHelper*) (#8569)
• Permit using the Updater _hash function, even if we don't have a signature appended to the image (#8507, #8545)
• Test: fixing itoa implementation and clean-up of tests and test Makefile (#8531)
• WString: unify numeric conversion and fix assignments (#8526)
• Fix OOM print handling of NULL file pointer (#8527)
• Heap panic / abort cleanup (#8465)
• Heap init code improvements and updates (#8458)
• Fix, calloc now fails on extra-large request. (#8482)
• Flash-size agnostic builds (#6690)
• WString: avoid writing to const storage (#8463)
• Fix Stream::read into buffer ignoring every second byte (#8452, #8453)
• Fix VM Address mask (#8440)
• Import getLocalTime() from esp32/Arduino (#8413)
• Sync umm_malloc style with upstream (#8426)
• StreamConstPtr: disallow passing a String temporary (#8410)
• Fix umm_blocks() (#8429)
• Missing includes in StreamString.h (#8367)
• Implement esp_yield() as a replacement for delay(0) (#7148)
• Update mmu_get... and mmu_set... (#8290)
• Reduce build size by implementing flash string overloads for String (#8106)

Libraries - FS

• Update to LittleFS 2.5.1 (#8543, #8786)
• Fix File::readString to work with binary data (#8742)
• Add FSTools with examples of how to convert between SPIFFS and LITTLEFS. (#7696)
• Correctly using fs:: namespace in SD & SDFS (#8493)
• Move ESP8266SDFat library to master, not branch (#8460)
• Fix info.usedBytes calculation giving weird result (#8445)
• LittleFS: add overrides for Stream::send (#8386)
• Update to SdFat 2.1.1 with UTF-8 support (#8355)
• Clean up SpeedTest output, avoid div-by-0 (#8340)

Libraries - Network

• hostByName timeout fixes (#8787)
• PHY status API for ethernet drivers (#8784)
• lwip2: cleanup logging and use newlib printf (#8769)
• Consistent netif->status_callback (#8676)
• Make WiFi/Ethernet interface compatible with Arduino Ethernet API (#8645)
• Fix WiFi/Ethernet hostname management (#8626)
• Add WiFiClient::abort() (#8738)
• Provide wl_tcp_state as tcp_state alias (#8609)
• Do not call tcp/udp ::stopAll() when it is not required to do so (#8598)
• Fix lwip2 ping (#8596)
• DHCP custom option(s) for DhcpServer (#8582)
• lwIP on ethernet: examples (#8395)
• Define lwIP's s32/u32 to int (#8560)
• Update RFC 5246 URL (#8564)
• lwIP: v2.1.3 + dhcp fixes (#8319)
• WiFiServer - 'rename' available() to accept() (#8419)
• WiFiServer - don't inherit from Server class (#8418)
• WiFi library ArduinoWiFiServer update (#8238)
• Place deprecated attribute in front of function (#8258)

Libraries - WiFi

• Allow passing beacon interval to SoftAP config (#8695)
• Optimize disconnect method in WiFiSTA class (#8760)
• Add eraseap option to WiFi disconnect method. (#8758)
• Allow to access bss_info after scan (#8683)
• Patch eap.o memory leak (#8566)
• Fix double-free when connecting to WPA2-Enterprise networks (#8529)
• Initialize SoftAP DhcpServer object on demand (#8546)
• Correctly access WIFI_EVENT_MODE_CHANGE event info (#8343)
• Return WL_WRONG_PASSWORD when calling begin() w/ invalid password (#8229)

Libraries - TLS/SSL

• Don't return true with WiFiClientSecureBearSSL::connected() when really disconnected (#8330)
• Only check the actual used length of the hash (#8709)
• Fix WiFiClientSecure remoteIP(), remotePort(), localIP(), localPort() functions (#8693)
• SSL examples updates (#8643)
• Update example certs (#8642)
• Update to latest BearSSL (#8600)
• Delete operator=(Self&) when copy constructor is deleted (#8535)
• Update sessions example to show speed difference (#8528)

Libraries - ESP8266WebServer

• Stop incorrectingly increase number of arguments when setting up arg("plain") (#8599)
• Use String when working with Basic authentication (#8548)
• Fix missing implementation of send stream by reference (#8533)
• Drop inactive connection when another is waiting to improve page load time (#8216)
• Optional ETag support, custom generator function (#8227)

Libraries - Wire

• Buffer length improvements (#8398)
• Allow to override buffer length (#8390)
• I2C clock phase correction in START condition (#8383)

Libraries - HTTPUpdate

• Allow passing custom HTTPClient (#8773)
• Correct class name in readme.rst (#8751)
• Add DEBUG payload output (#8745)
• Add setClientTimeout() (#8740)
• Fix missing include in OTA example (#8667)
• Catch a possible null-dereference (#8508)
• Allow manually setting MD5 checksum (#8204)

Libraries - HTTPClient

• Fix connection reuse for different URIs in ::begin (#8466)
• Prevent empty user-agent in header (#8411)
• Movable HTTPClient and fixing WiFiClient copy (#8237)
• Add writeToPrint (#8056)
• Pass authorization String by value (#8225)
• Add ::DELETE() (#8214)

Libraries - ArduinoOTA

• Fix compilation when no global MDNS instance is available (#8478)
• Add ::end() (#8379)

Libraries - mDNS

• Restart mDNS when network state changes (#8705)
• Also increase # of sends when a send fails (#8641)
• Report valid Board ID (#8634)
• Fix ti...

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Release 3.1.1

Release 3.1.1 Notes

(includes 3.1.0 release notes)

Core

• Non-interruptible delay(), wait for the full duration (#8802)
• Transparently manage recurrent scheduled functions in delay() (#8802)
• Fix C builds when including coredecls.h and / or core_esp8266_features.h (#8795)
• Typo in EAP patch (#8797)
• Fix clang warnings related to constexpr usage (#8796)
• Fix printf format in Updater debug messages (#8791)

Examples

• Remove 400b stack allocation from Advanced Web example (#8793)

Build system

• Also apply #8226 portable python fix to mkbuildopts script (#8804)
• Attempt to fix elf2bin.py not always working on Windows (#8799)

CI

• Document updating the GitHub deployment keys (#8790, #8792)

Release 3.1.0 Notes

Great additions

• NONOS SDK 3.0.5 (#8736, #8746, #8755, #8770)
• Support for global build defines and options for Arduino IDE (#8504)
• WPA2-Enterprise (#8529, #8566)
• (experimental) Flash-size agnostic builds (#6690)

Additions

• DHCP custom option(s) for DhcpServer (#8582)
• Updater lifetime callbacks (#8653)
• Add WiFiClient::abort() (#8738)

Notable changes

• hostByName timeout fixes (#8787)
• PHY status API for ethernet drivers (#8784)
• Update to EspSoftwareSerial 7.0.0 (#8781)
• Keep Servo in the same position after re-attaching (#8753)
• Fix WiFiClientSecure remoteIP(), remotePort(), localIP(), localPort() functions (#8693)
• mDNS - valid board for _adruino._tcp service (#8634)
• Allow longer delays for Ticker (#8625)
• ArduinoOTA and ESP8266HTTPUpdate no longer stop all WiFiClient/WiFiUDP (#8598)
• WiFiServer - rename available() to accept(), deprecate available() (#8419)
• Avoid out-of-bounds reads in String (#8463, #8597)
• Fix compilation issues and update toolchain (#8393, #8613)
• Update to SdFat 2.1.1 with UTF-8 support (#8355)
• lwIP v2.1.3 + various fixes (#8319, #8596)
• WiFiServer - 'rename' available() to accept() (#8419)
• WiFiServer - don't inherit from Server class (#8418)
• I2C clock phase correction in START condition (#8383)
• MMU functions strict aliasing fixes (#8290)
• Add FSTools with examples of how to convert between SPIFFS and LittleFS (#7696)
• Rename esp_yield() to esp_suspend(), update esp_yield() to also call esp_schedule() (#7148)

Breaking changes

None

Changes

SDK

• Added NONOS SDK 3.0.5 (#8736, #8770)
• Resolve flash address issues with SDK 3.0.x (#8755)
• Heap addendum to handle changes in NON-OS SDK 3.0.x (#8746)
• Fix missing NONOS SDK 2.2.x 19-03-13 (#7965, #8363)

Core

• Fix flashinit panic not printing (#8762)
• Fix Stream::parseFloat() (#8785)
• Added missing DRAM fallback to pvPortCallocIram, pvPortZallocIram, and (#8765)
• Fix pre-SDK Cache_Read_Enable for PUYA flash (#8658)
• OTA: Updater lifetime callbacks (#8653)
• Nice stack smashing postmortem message (#8670)
• Ensure xPortGetFreeHeapSize reports DRAM (#8680)
• SPI: writePattern() should not call setDataBits(0) (#8636)
• Correctly handle unaligned address in EspClass::flashWrite u8 overload (#8605)
• Add esp_is_8285(), check for ESP8285 at runtime (#8604)
• Allow to use temporary strings in configTime (#8606)
• Allow UART1 to be inverted (#8601)
• Avoid reading past end of non-zero terminated char arrays (#8597)
• Fix DTR offset value (#8586)
• WString: remove operator==(const __FlashStringHelper*) (#8569)
• Permit using the Updater _hash function, even if we don't have a signature appended to the image (#8507, #8545)
• Test: fixing itoa implementation and clean-up of tests and test Makefile (#8531)
• WString: unify numeric conversion and fix assignments (#8526)
• Fix OOM print handling of NULL file pointer (#8527)
• Heap panic / abort cleanup (#8465)
• Heap init code improvements and updates (#8458)
• Fix, calloc now fails on extra-large request. (#8482)
• Flash-size agnostic builds (#6690)
• WString: avoid writing to const storage (#8463)
• Fix Stream::read into buffer ignoring every second byte (#8452, #8453)
• Fix VM Address mask (#8440)
• Import getLocalTime() from esp32/Arduino (#8413)
• Sync umm_malloc style with upstream (#8426)
• StreamConstPtr: disallow passing a String temporary (#8410)
• Fix umm_blocks() (#8429)
• Missing includes in StreamString.h (#8367)
• Implement esp_yield() as a replacement for delay(0) (#7148)
• Update mmu_get... and mmu_set... (#8290)
• Reduce build size by implementing flash string overloads for String (#8106)

Libraries - FS

• Update to LittleFS 2.5.1 (#8543, #8786)
• Fix File::readString to work with binary data (#8742)
• Add FSTools with examples of how to convert between SPIFFS and LITTLEFS. (#7696)
• Correctly using fs:: namespace in SD & SDFS (#8493)
• Move ESP8266SDFat library to master, not branch (#8460)
• Fix info.usedBytes calculation giving weird result (#8445)
• LittleFS: add overrides for Stream::send (#8386)
• Update to SdFat 2.1.1 with UTF-8 support (#8355)
• Clean up SpeedTest output, avoid div-by-0 (#8340)

Libraries - Network

• hostByName timeout fixes (#8787)
• PHY status API for ethernet drivers (#8784)
• lwip2: cleanup logging and use newlib printf (#8769)
• Consistent netif->status_callback (#8676)
• Make WiFi/Ethernet interface compatible with Arduino Ethernet API (#8645)
• Fix WiFi/Ethernet hostname management (#8626)
• Add WiFiClient::abort() (#8738)
• Provide wl_tcp_state as tcp_state alias (#8609)
• Do not call tcp/udp ::stopAll() when it is not required to do so (#8598)
• Fix lwip2 ping (#8596)
• DHCP custom option(s) for DhcpServer (#8582)
• lwIP on ethernet: examples (#8395)
• Define lwIP's s32/u32 to int (#8560)
• Update RFC 5246 URL (#8564)
• lwIP: v2.1.3 + dhcp fixes (#8319)
• WiFiServer - 'rename' available() to accept() (#8419)
• WiFiServer - don't inherit from Server class (#8418)
• WiFi library ArduinoWiFiServer update (#8238)
• Place deprecated attribute in front of function (#8258)

Libraries - WiFi

• Allow passing beacon interval to SoftAP config (#8695)
• Optimize disconnect method in WiFiSTA class (#8760)
• Add eraseap option to WiFi disconnect method. (#8758)
• Allow to access bss_info after scan (#8683)
• Patch eap.o memory leak (#8566)
• Fix double-free when connecting to WPA2-Enterprise networks (#8529)
• Initialize SoftAP DhcpServer object on demand (#8546)
• Correctly access WIFI_EVENT_MODE_CHANGE event info (#8343)
• Return WL_WRONG_PASSWORD when calling begin() w/ invalid password (#8229)

Libraries - TLS/SSL

• Don't return true with WiFiClientSecureBearSSL::connected() when really disconnected (#8330)
• Only check the actual used length of the hash (#8709)
• Fix WiFiClientSecure remoteIP(), remotePort(), localIP(), localPort() functions (#8693)
• SSL examples updates (#8643)
• Update example certs (#8642)
• Update to latest BearSSL (#8600)
• Delete operator=(Self&) when copy constructor is deleted (#8535)
• Update sessions example to show speed difference (#8528)

Libraries - ESP8266WebServer

• Stop incorrectingly increase number of arguments when setting up arg("plain") (#8599)
• Use String when working with Basic authentication (#8548)
• Fix missing implementation of send stream by reference (#8533)
• Drop inactive connection when another is waiting to improve page load time (#8216)
• Optional ETag support, custom generator function (#8227)

Libraries - Wire

• Buffer length improvements (#8398)
• Allow to override buffer length (#8390)
• I2C clock phase correction in START condition (#8383)

Libraries - HTTPUpdate

• Allow passing custom HTTPClient (#8773)
• Correct class name in readme.rst (#8751)
• Add DEBUG payload output (#8745)
• Add setClientTimeout() (#8740)
• Fix missing include in OTA example (#8667)
• Catch a possible null-dereference (#8508)
• Allow manually setting MD5 checksum (#8204)

Libraries - HTTPClient

• Fix connection reuse for different URIs in ::begin (#8466)
• Prevent empty user-agent in header (#8411)
• Movable HTTPClient and fixing WiFiClient copy (#8237)
• Add writeToPrint (#8056)
• Pass authorization String by value (#8225)
• Add ::DELETE() (#8214)

Libraries - ArduinoOTA

• Fix compilation when no global MDNS instance is available (#8478)
• Add ::end() (#8379)

Libraries - mDNS

• Restart mDNS when network state changes (#8705)
• Also increase # of sends when a send fails (#8641)
• Report valid Board ID (#8634)
• Fix timeout type (#8394)
• Remove obsolete comments about legacy mDNS impl. (#8377)

Libraries - others

• Update to EspSoftwareSerial 7.0.0 (#8260, #8295, #8353, #8370, #8373, #8541, #8739, #8754, #8781)
• Remove temporary buffer in common ConfigFile example .ino (#8298)
• DNS Server: Add DNS forwarder to DNSServer (#7237)
• Netbios: Use current netif address in response (#8622)
• Servo: Keep Servo in the same position after re-attaching (#8753)
• HTTPUpdateServer Allow external POSTS (CORS) (#6824)
• Ticker: Allow longer delays and some internal updates (#8625)

Tools

• Stack decoder script (#8661)
• Do not show python traceback when esptool fails (#8603, #8608)
• Table output for segment size script (#8551, #8572, #8573)

Documentation

• Correction on Heap API available from ISR (#8708)
• We are no longer using Travis CI (#8706)
• Update WiFi scan docs (#8685)
• Fix Sphinx build warnings (#8686)
• Add missing license headers (#8630)
• Update FS documentation (#8619)
• Document side effects for wifi-off-at-boot (#8614)
• Correct "list" formatting (#8610)
• Update broken links (#8589)
• Add documentation entry about compiler warnings (#8492)
• Remove Python installation from OTA doc (#8417)
• comments on Arduino flush() method (#8318)

Boards

• Add Wemos ESP-WROOM-...

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Release 3.1.0

Release 3.1.0 Notes

Great additions

• NONOS SDK 3.0.5 (#8736, #8746, #8755, #8770)
• Support for global build defines and options for Arduino IDE (#8504)
• WPA2-Enterprise (#8529, #8566)
• (experimental) Flash-size agnostic builds (#6690)

Additions

• DHCP custom option(s) for DhcpServer (#8582)
• Updater lifetime callbacks (#8653)
• Add WiFiClient::abort() (#8738)

Notable changes

• hostByName timeout fixes (#8787)
• PHY status API for ethernet drivers (#8784)
• Update to EspSoftwareSerial 7.0.0 (#8781)
• Keep Servo in the same position after re-attaching (#8753)
• Fix WiFiClientSecure remoteIP(), remotePort(), localIP(), localPort() functions (#8693)
• mDNS - valid board for _adruino._tcp service (#8634)
• Allow longer delays for Ticker (#8625)
• ArduinoOTA and ESP8266HTTPUpdate no longer stop all WiFiClient/WiFiUDP (#8598)
• WiFiServer - rename available() to accept(), deprecate available() (#8419)
• Avoid out-of-bounds reads in String (#8463, #8597)
• Fix compilation issues and update toolchain (#8393, #8613)
• Update to SdFat 2.1.1 with UTF-8 support (#8355)
• lwIP v2.1.3 + various fixes (#8319, #8596)
• WiFiServer - 'rename' available() to accept() (#8419)
• WiFiServer - don't inherit from Server class (#8418)
• I2C clock phase correction in START condition (#8383)
• MMU functions strict aliasing fixes (#8290)
• Add FSTools with examples of how to convert between SPIFFS and LittleFS (#7696)
• Rename esp_yield() to esp_suspend(), update esp_yield() to also call esp_schedule() (#7148)

Breaking changes

None

Changes

SDK

• Added NONOS SDK 3.0.5 (#8736, #8770)
• Resolve flash address issues with SDK 3.0.x (#8755)
• Heap addendum to handle changes in NON-OS SDK 3.0.x (#8746)
• Fix missing NONOS SDK 2.2.x 19-03-13 (#7965, #8363)

Core

• Fix flashinit panic not printing (#8762)
• Fix Stream::parseFloat() (#8785)
• Added missing DRAM fallback to pvPortCallocIram, pvPortZallocIram, and (#8765)
• Fix pre-SDK Cache_Read_Enable for PUYA flash (#8658)
• OTA: Updater lifetime callbacks (#8653)
• Nice stack smashing postmortem message (#8670)
• Ensure xPortGetFreeHeapSize reports DRAM (#8680)
• SPI: writePattern() should not call setDataBits(0) (#8636)
• Correctly handle unaligned address in EspClass::flashWrite u8 overload (#8605)
• Add esp_is_8285(), check for ESP8285 at runtime (#8604)
• Allow to use temporary strings in configTime (#8606)
• Allow UART1 to be inverted (#8601)
• Avoid reading past end of non-zero terminated char arrays (#8597)
• Fix DTR offset value (#8586)
• WString: remove operator==(const __FlashStringHelper*) (#8569)
• Permit using the Updater _hash function, even if we don't have a signature appended to the image (#8507, #8545)
• Test: fixing itoa implementation and clean-up of tests and test Makefile (#8531)
• WString: unify numeric conversion and fix assignments (#8526)
• Fix OOM print handling of NULL file pointer (#8527)
• Heap panic / abort cleanup (#8465)
• Heap init code improvements and updates (#8458)
• Fix, calloc now fails on extra-large request. (#8482)
• Flash-size agnostic builds (#6690)
• WString: avoid writing to const storage (#8463)
• Fix Stream::read into buffer ignoring every second byte (#8452, #8453)
• Fix VM Address mask (#8440)
• Import getLocalTime() from esp32/Arduino (#8413)
• Sync umm_malloc style with upstream (#8426)
• StreamConstPtr: disallow passing a String temporary (#8410)
• Fix umm_blocks() (#8429)
• Missing includes in StreamString.h (#8367)
• Implement esp_yield() as a replacement for delay(0) (#7148)
• Update mmu_get... and mmu_set... (#8290)
• Reduce build size by implementing flash string overloads for String (#8106)

Libraries - FS

• Update to LittleFS 2.5.1 (#8543, #8786)
• Fix File::readString to work with binary data (#8742)
• Add FSTools with examples of how to convert between SPIFFS and LITTLEFS. (#7696)
• Correctly using fs:: namespace in SD & SDFS (#8493)
• Move ESP8266SDFat library to master, not branch (#8460)
• Fix info.usedBytes calculation giving weird result (#8445)
• LittleFS: add overrides for Stream::send (#8386)
• Update to SdFat 2.1.1 with UTF-8 support (#8355)
• Clean up SpeedTest output, avoid div-by-0 (#8340)

Libraries - Network

• hostByName timeout fixes (#8787)
• PHY status API for ethernet drivers (#8784)
• lwip2: cleanup logging and use newlib printf (#8769)
• Consistent netif->status_callback (#8676)
• Make WiFi/Ethernet interface compatible with Arduino Ethernet API (#8645)
• Fix WiFi/Ethernet hostname management (#8626)
• Add WiFiClient::abort() (#8738)
• Provide wl_tcp_state as tcp_state alias (#8609)
• Do not call tcp/udp ::stopAll() when it is not required to do so (#8598)
• Fix lwip2 ping (#8596)
• DHCP custom option(s) for DhcpServer (#8582)
• lwIP on ethernet: examples (#8395)
• Define lwIP's s32/u32 to int (#8560)
• Update RFC 5246 URL (#8564)
• lwIP: v2.1.3 + dhcp fixes (#8319)
• WiFiServer - 'rename' available() to accept() (#8419)
• WiFiServer - don't inherit from Server class (#8418)
• WiFi library ArduinoWiFiServer update (#8238)
• Place deprecated attribute in front of function (#8258)

Libraries - WiFi

• Allow passing beacon interval to SoftAP config (#8695)
• Optimize disconnect method in WiFiSTA class (#8760)
• Add eraseap option to WiFi disconnect method. (#8758)
• Allow to access bss_info after scan (#8683)
• Patch eap.o memory leak (#8566)
• Fix double-free when connecting to WPA2-Enterprise networks (#8529)
• Initialize SoftAP DhcpServer object on demand (#8546)
• Correctly access WIFI_EVENT_MODE_CHANGE event info (#8343)
• Return WL_WRONG_PASSWORD when calling begin() w/ invalid password (#8229)

Libraries - TLS/SSL

• Don't return true with WiFiClientSecureBearSSL::connected() when really disconnected (#8330)
• Only check the actual used length of the hash (#8709)
• Fix WiFiClientSecure remoteIP(), remotePort(), localIP(), localPort() functions (#8693)
• SSL examples updates (#8643)
• Update example certs (#8642)
• Update to latest BearSSL (#8600)
• Delete operator=(Self&) when copy constructor is deleted (#8535)
• Update sessions example to show speed difference (#8528)

Libraries - ESP8266WebServer

• Stop incorrectingly increase number of arguments when setting up arg("plain") (#8599)
• Use String when working with Basic authentication (#8548)
• Fix missing implementation of send stream by reference (#8533)
• Drop inactive connection when another is waiting to improve page load time (#8216)
• Optional ETag support, custom generator function (#8227)

Libraries - Wire

• Buffer length improvements (#8398)
• Allow to override buffer length (#8390)
• I2C clock phase correction in START condition (#8383)

Libraries - HTTPUpdate

• Allow passing custom HTTPClient (#8773)
• Correct class name in readme.rst (#8751)
• Add DEBUG payload output (#8745)
• Add setClientTimeout() (#8740)
• Fix missing include in OTA example (#8667)
• Catch a possible null-dereference (#8508)
• Allow manually setting MD5 checksum (#8204)

Libraries - HTTPClient

• Fix connection reuse for different URIs in ::begin (#8466)
• Prevent empty user-agent in header (#8411)
• Movable HTTPClient and fixing WiFiClient copy (#8237)
• Add writeToPrint (#8056)
• Pass authorization String by value (#8225)
• Add ::DELETE() (#8214)

Libraries - ArduinoOTA

• Fix compilation when no global MDNS instance is available (#8478)
• Add ::end() (#8379)

Libraries - mDNS

• Restart mDNS when network state changes (#8705)
• Also increase # of sends when a send fails (#8641)
• Report valid Board ID (#8634)
• Fix timeout type (#8394)
• Remove obsolete comments about legacy mDNS impl. (#8377)

Libraries - others

• Update to EspSoftwareSerial 7.0.0 (#8260, #8295, #8353, #8370, #8373, #8541, #8739, #8754, #8781)
• Remove temporary buffer in common ConfigFile example .ino (#8298)
• DNS Server: Add DNS forwarder to DNSServer (#7237)
• Netbios: Use current netif address in response (#8622)
• Servo: Keep Servo in the same position after re-attaching (#8753)
• HTTPUpdateServer Allow external POSTS (CORS) (#6824)
• Ticker: Allow longer delays and some internal updates (#8625)

Tools

• Stack decoder script (#8661)
• Do not show python traceback when esptool fails (#8603, #8608)
• Table output for segment size script (#8551, #8572, #8573)

Documentation

• Correction on Heap API available from ISR (#8708)
• We are no longer using Travis CI (#8706)
• Update WiFi scan docs (#8685)
• Fix Sphinx build warnings (#8686)
• Add missing license headers (#8630)
• Update FS documentation (#8619)
• Document side effects for wifi-off-at-boot (#8614)
• Correct "list" formatting (#8610)
• Update broken links (#8589)
• Add documentation entry about compiler warnings (#8492)
• Remove Python installation from OTA doc (#8417)
• comments on Arduino flush() method (#8318)

Boards

• Add Wemos ESP-WROOM-02 board (#8664)
• MOD-WIFI-ESP8266(-DEV) update (#8297)

Build system

• PIO: Fix CPPDEFINES loop (#8744)
• ldscripts: Fix typo in section list (#8726)
• Add debug support for build.opt (#8637)
• Rebuilt HAL w/latest toolchain and fixed configure (#8615)
• PIO: Move _GNU_SOURCE from CCFLAGS to CPPDEFINES (#8579)
• PIO: Improve support for hand-written asm source files (#8583)
• platform.txt: Override python3 anon pipe encoding to utf-8 for 'tools/sizes.py' (#8570)
• Add support for global build defines and options (#8504, #8565)
• Table output for segment size script (#8551)
• Properly quote paths for GCC warnings files (#8523)
• Fix minor typo in generated comment (#8503)
• Migrate from astyle to clang-format (#8464)
• Minor ...

Read more

Release 3.0.2

Release 3.0.2 Notes

(includes 3.0.1 and 3.0.0 release notes)

Core

• Internal API: add comments and corrections (#8201)
• String: Avoid copying past end of buffer in ::concat (#8198)
• Call umm_init just before starting SDK (#8207)
• Clean up use of "byte" as a type. uint8_t or (C++17) std::byte are better. (#8090)
• Fix PRxxx printf format macros (#8222)

Libraries

• Update to EspSoftwareSerial bug fix release 6.12.7 (#8195)
• Fixes failing https connections to HelloServerBearSSL (w/MMU48KIRAM) (#8206)
• Use valid categories in library.properties of bundled libraries (#8221)
• Netdump printf fix (#8215)
• Fix with NO_GLOBAL_INSTANCES (#8184)
• Make multiple FS begin calls noops() SDFS/LittleFS (#8235)

CI

• Copy released JSON to board URL, not new one (#8182)

Build system

• Make mkdir.py work under python<3.5 (#8194)
• Certificate and public keys automatic updater (#8218)
• Use only installed Python on Windows (#8226)

Board definitions

• Add wifi kit 8 to boards (#8190)

Release 3.0.1 Notes

Breaking Changes

• BREAKING: "i2s.h" removed, I2S library added (#8108)

Core

• Make String reallocation warning more descriptive (#8131)
• Normalize core header's include guard. (#8110)
• makeword: sync header and implementation (#8097)
• Use optimal bundled library names (#8088) (#8098)
• Added IRAM_ATTR to _stopPWM() so that digitalWrite() would work inside ISR. Fixes #8043 (#8044) (#8048)
• makecorever.py: restore ARDUINO_ESP8266_GIT_VER even without .git/ (#8138)

IDE

• Update debug level list link (#8172)
• Add missing menu.UploadTool name definition (#8153)

Libraries - LittleFS

• Re-add mklittlefs to package.json, fixing "ESP8266 LittleFS Data Upload" (#8060)
• Don't crash when including LittleFS.h w/no FS (#8173)

Libraries - SD/SDFS

• SDFS: fix AvailableForWrite: do not always return 0 when space is available (#8167)

Libraries - ESP8266httpUpdate

• ESP266httpUpdate: remove dead API and fix doc (#8063)

Libraries - ESP8266WiFi

• Fix stopAllExcept with WiFiClientSecure (#8136)
• LwipIntfDev.h - apply static DNS config (#8076)

Libraries - SoftwareSerial

• Update EspSoftwareSerial to bug fix release 6.12.6

Libraries - ESP8266HTTPClient

• ESP8266HTTPClient: remove old example (#8111)
• Change protocol detection so uppercase or lowercase works (#8137)

Toolchain

• Update toolchain to gcc 10.3 w/patches (#8104) (#8103)
• Update toolchain to fix pgm_read_float_unaligned (#8091)
• Remove include and lib folders removed since 3.0.0 core (#8125)
• Add errors on invalid/missing function return type (#8165)
• GNU source: honoring libc requirements (#8147)

PlatformIO

• PIO: use CCFLAGS for -Werror (#8175) (#8092)
• Documentation: Note about options on PIO (#8174)

Documentation

• Fix readthedoc python dependencies (#8166)
• Documentation: Arduino IDE options: fix hyperlinks and format, options (#8158) (#8154)

CI / Release / Environment

• Add code-spell spelling checks to CI (#8067)
• Release script: protect bash variables and add logs, major/minor/rev macro addition, BASH fix (#8074) (#8126) (#8127) (#8168)
• Remove some no longer applicable artifacts from .gitignore (#8170)

Release 3.0.0 Notes

Great additions

• PoC cache configuration control (aka +16KB heap!) (#7060)
• Hardware WDT Stack Dump Tool (#7010)
• Update to GCC 10.2 (#7607)

Breaking: Deprecation - Removal

• BREAKING: httpclient: remove deprecated API (#7617)
• BREAKING: Update Arduino.h, remove TIM_DIV265 (#7440)
• BREAKING: Remove lwip-v1.4 specific code (#7436)
• BREAKING: Remove axTLS from code and documentation (#7437)

Breaking changes summary

• BREAKING: WString: return bool instead of unsigned char (#7939)
• BREAKING: wifi: remove pseudo-modes for shutdown, expose ::[resumeFrom]shutdown() (#7956)
• BREAKING: Disable WiFi at boot by default (#7902, #7990, #7993)
• BREAKING: base64::encode() compat with esp32: no newlines by default (#7910)
• BREAKING: Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
• BREAKING: Upgrade to upstream newlib 4.0.0 release (64 bits time_t) (#7708)
• BREAKING: Change servo defaults to safer defaults (#7023)
• BREAKING: Add Print::availableForWrite method (#7658)
• BREAKING: Change return EEPROM.end() to bool (#7630)
• BREAKING: Change return type of channel() (#7656)
• BREAKING: Change return type of RSSI() (#7657)
• BREAKING: Add Wrong Password wifi status case (#7652)
• BREAKING: analogWriteRange 8-bit default (#7456)
• BREAKING: HTTPClient: RequestHandler: Pass String by const reference (#6583)

Boot

• eboot: .RODATA, upstream uzlib, move CRC, save 112 bytes (#7844)
• Update eboot to build with C17, not C99 standard (#7837, #7838)
• Fix eboot crash with exception 28. ets_printf() should take pointer argument. (#7666)
• Use 32b loads to set print strings (#7545)
• Comment out verify step in eboot.c (#7468)

Core

• BREAKING: WString: return bool instead of unsigned char (#7939)
• ESP class should be a singleton: make all member functions static. (#8006)
• Updated HWDT to use IRAM_ATTR instead of ICACHE_RAM_ATTR. (#8013, #8018)
• Hardware WDT Stack Dump Tool (#7010)
• WString: direct operator overloads instead of StringSumHelper (#7781)
• Clean up ICACHE_RAM_ATTR in VM PR (#7924)
• Added ESP32 compatible methods for setting/getting sleep mode (#7901)
• Enable 128K virtual memory via external SPI SRAM (#6994)
• Stream::send() (#6979, #7935, #7951, #7987, #7995)
• [BREAKING] base64::encode() compat with esp32: no newlines by default (#7910)
• BREAKING - Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
• OOM debug: warn about String reallocation (#7908)
• OOM: avoid warn when calling *alloc(0) (#7909)
• String: add missing long long operator implementations (#7888)
• Support to reboot into UART download mode (#7854, #7897)
• String: compatibility with 64 bits scalars (#7863)
• Update toolchain to support std::remainder (#7849)
• allow to set pin to OUTPUT_OPEN_DRAIN in analogWriteMode (#7841)
• Add 24-bit mode to I2S (#7835)
• Hexdump fix&update (#7831)
• improve silicon aes_unwrap (#7773)
• Supersede #3856, remove undef min/max (#7824)
• Add stub for analogReference() (#7809)
• UART: add yield (#7799)
• BREAKING - Upgrade to upstream newlib 4.0.0 release (#7708)
• Update to latest uzlib upstream (#7776, #7782)
• i2s: adds i2s_rxtxdrive_begin(enableRx, enableTx, driveRxClocks, driveTxClocks) (#7748)
• PoC cache configuration control (#7060, #7754, #7767, #7768, #7812, #7816, #7820, #7790)
• Receiving no data in Updater is an error (#7729)
• PROGMEM compatibility changes to String (#7724)
• schedule_recurrent_function_us should be in iram (#7713)
• Re-implement PWM generator (#7715, #7712, #7022, #7231, #7800, #7996)
• WString: Optimize a bit (#7553)
• Fix sntp_get_real_time prototype in header (#7707)
• Provide String::indexOf for a char* needle (#7706)
• Fix newlib to support <+-nn> timezone names (#7699, #7702)
• BREAKING: Add Print::availableForWrite method (#7658)
• settimeofday_cb: distinguish from user or sntp (#7637)
• Add Copyright notice to Schedule.h (#7653)
• BREAKING: Add Wrong Password wifi status case (#7652)
• New flash writing method with offset/memory/size alignment handling (#7514)
• Add missing sntp_init/sntp_stop (#7628)
• Use direct member initialization instead of ctr initialisation (#7558)
• Prevent rewriting Updater_Signing.h if content unchanged (#7627)
• WString: c_str() returns null pointer after move (#7611)
• WString: mark move ctor as noexcept (#7610)
• sntp: use one time source and fix unsynchronized sntp time stamp (#7595)
• Add clear method to IPAddress (#7586)
• Check also if IP is not IPADDR_NONE (#7585)
• Fix gzip+signed OTA error (#7577)
• new w/ OOM now aborts by defaults, or throw an exception (#7536)
• getCpuFreqMHz(): fix when F_CPU is not defined (#7554)
• Updater MD5 cleanup on begin (#7534)
• Add synthetic IntegerDivideByZero exception (#7496)
• avoid circular #include dependence for PolledTimeout (#7356)
• base64 class uses String, adding harmless #include (#7517)
• sys/pgmspace.h: Refactor inline asm (#7510)
• Add SerialEvent() callback to loop processing (#7505)
• Remove warnings when building NoAssert (#7499)
• BREAKING - analogWriteRange 8-bit default (#7456)
• BREAKING - Pass String by const reference [3.0] (#6583)

Libraries - softserial

• Maintenance release 6.12.3: better dependency declarations for Platformio (#8030)
• EspSoftwareSerial 6.12.2: Inlining push() functions that must be in IRAM for calling from ISRs (#7986)
• Bug-fix release 6.12.1: a documentation error was reported by a user; dropped bit-patterns that masked the stop-bit fixed. (#7938)
• EspSoftwareSerial minor release 6.12.0 completes adaptation to new Stream::send() (#7923)
• Minor EspSoftwareSerial release 6.11.7, for deprecated ICACHE_RAM_ATTR in upcoming ESP8266 Arduino core 3.0.0. (#7922)
• EspSoftwareSerial, bump up Arduino library manager related files 6.11.6 (#7891)
• Update to EspSoftwareSerial 6.11.5 (#7889)
• EspSoftwareSerial bug-fix release 6.11.4 (#7862)
• Update to EspSoftwareSerial 6.11.3: prepares for ESP8266 Arduino core PR 6979. (#7840)
• EspSoftwareSerial 6.11.2: Delegate<> assign operators added. (#7815)
• Minor EspSoftwareSerial release 6.11.1 (#7804)
• Minor EspSoftwareSerial release 6.11.0 (#7802)
• EspSoftwareSerial bug fix release 6.10.1: preciseDelay() could delay() for extremely long time, if period duration was exceeded on entry. (#7771)
• EspSoftwareSerial 6.10.0: override keyword for recent Print::availableForWrite() addition (#7710)
• EspSoftwareSerial 6.9.0: data/strings in flash alignment handling fix. Yielding during write() improvement. (#7604)

Libraries - FS

• Update mklittlefs executable (#7906)
• Track creation time of ...

Read more

Release 3.0.1

Breaking Changes

• BREAKING: "i2s.h" removed, I2S library added (#8108)

Core

• Make String reallocation warning more descriptive (#8131)
• Normalize core header's include guard. (#8110)
• makeword: sync header and implementation (#8097)
• Use optimal bundled library names (#8088) (#8098)
• Added IRAM_ATTR to _stopPWM() so that digitalWrite() would work inside ISR. Fixes #8043 (#8044) (#8048)
• makecorever.py: restore ARDUINO_ESP8266_GIT_VER even without .git/ (#8138)

IDE

• Update debug level list link (#8172)
• Add missing menu.UploadTool name definition (#8153)

Libraries - LittleFS

• Re-add mklittlefs to package.json, fixing "ESP8266 LittleFS Data Upload" (#8060)
• Don't crash when including LittleFS.h w/no FS (#8173)

Libraries - SD/SDFS

• SDFS: fix AvailableForWrite: do not always return 0 when space is available (#8167)

Libraries - ESP8266httpUpdate

• ESP266httpUpdate: remove dead API and fix doc (#8063)

Libraries - ESP8266WiFi

• Fix stopAllExcept with WiFiClientSecure (#8136)
• LwipIntfDev.h - apply static DNS config (#8076)

Libraries - SoftwareSerial

• Update EspSoftwareSerial to bug fix release 6.12.6

Libraries - ESP8266HTTPClient

• ESP8266HTTPClient: remove old example (#8111)
• Change protocol detection so uppercase or lowercase works (#8137)

Toolchain

• Update toolchain to gcc 10.3 w/patches (#8104) (#8103)
• Update toolchain to fix pgm_read_float_unaligned (#8091)
• Remove include and lib folders removed since 3.0.0 core (#8125)
• Add errors on invalid/missing function return type (#8165)
• GNU source: honoring libc requirements (#8147)

PlatformIO

• PIO: use CCFLAGS for -Werror (#8175) (#8092)
• Documentation: Note about options on PIO (#8174)

Documentation

• Fix readthedoc python dependencies (#8166)
• Documentation: Arduino IDE options: fix hyperlinks and format, options (#8158) (#8154)

CI / Release / Environment

• Add code-spell spelling checks to CI (#8067)
• Release script: protect bash variables and add logs, major/minor/rev macro addition, BASH fix (#8074) (#8126) (#8127) (#8168)
• Remove some no longer applicable artifacts from .gitignore (#8170)

Release 3.0.0 Notes

Great additions

• PoC cache configuration control (aka +16KB heap!) (#7060)
• Hardware WDT Stack Dump Tool (#7010)
• Update to GCC 10.2 (#7607)

Breaking: Deprecation - Removal

• BREAKING: httpclient: remove deprecated API (#7617)
• BREAKING: Update Arduino.h, remove TIM_DIV265 (#7440)
• BREAKING: Remove lwip-v1.4 specific code (#7436)
• BREAKING: Remove axTLS from code and documentation (#7437)

Breaking changes summary

• BREAKING: WString: return bool instead of unsigned char (#7939)
• BREAKING: wifi: remove pseudo-modes for shutdown, expose ::[resumeFrom]shutdown() (#7956)
• BREAKING: Disable WiFi at boot by default (#7902, #7990, #7993)
• BREAKING: base64::encode() compat with esp32: no newlines by default (#7910)
• BREAKING: Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
• BREAKING: Upgrade to upstream newlib 4.0.0 release (64 bits time_t) (#7708)
• BREAKING: Change servo defaults to safer defaults (#7023)
• BREAKING: Add Print::availableForWrite method (#7658)
• BREAKING: Change return EEPROM.end() to bool (#7630)
• BREAKING: Change return type of channel() (#7656)
• BREAKING: Change return type of RSSI() (#7657)
• BREAKING: Add Wrong Password wifi status case (#7652)
• BREAKING: analogWriteRange 8-bit default (#7456)
• BREAKING: HTTPClient: RequestHandler: Pass String by const reference (#6583)

Boot

• eboot: .RODATA, upstream uzlib, move CRC, save 112 bytes (#7844)
• Update eboot to build with C17, not C99 standard (#7837, #7838)
• Fix eboot crash with exception 28. ets_printf() should take pointer argument. (#7666)
• Use 32b loads to set print strings (#7545)
• Comment out verify step in eboot.c (#7468)

Core

• BREAKING: WString: return bool instead of unsigned char (#7939)
• ESP class should be a singleton: make all member functions static. (#8006)
• Updated HWDT to use IRAM_ATTR instead of ICACHE_RAM_ATTR. (#8013, #8018)
• Hardware WDT Stack Dump Tool (#7010)
• WString: direct operator overloads instead of StringSumHelper (#7781)
• Clean up ICACHE_RAM_ATTR in VM PR (#7924)
• Added ESP32 compatible methods for setting/getting sleep mode (#7901)
• Enable 128K virtual memory via external SPI SRAM (#6994)
• Stream::send() (#6979, #7935, #7951, #7987, #7995)
• [BREAKING] base64::encode() compat with esp32: no newlines by default (#7910)
• BREAKING - Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
• OOM debug: warn about String reallocation (#7908)
• OOM: avoid warn when calling *alloc(0) (#7909)
• String: add missing long long operator implementations (#7888)
• Support to reboot into UART download mode (#7854, #7897)
• String: compatibility with 64 bits scalars (#7863)
• Update toolchain to support std::remainder (#7849)
• allow to set pin to OUTPUT_OPEN_DRAIN in analogWriteMode (#7841)
• Add 24-bit mode to I2S (#7835)
• Hexdump fix&update (#7831)
• improve silicon aes_unwrap (#7773)
• Supersede #3856, remove undef min/max (#7824)
• Add stub for analogReference() (#7809)
• UART: add yield (#7799)
• BREAKING - Upgrade to upstream newlib 4.0.0 release (#7708)
• Update to latest uzlib upstream (#7776, #7782)
• i2s: adds i2s_rxtxdrive_begin(enableRx, enableTx, driveRxClocks, driveTxClocks) (#7748)
• PoC cache configuration control (#7060, #7754, #7767, #7768, #7812, #7816, #7820, #7790)
• Receiving no data in Updater is an error (#7729)
• PROGMEM compatibility changes to String (#7724)
• schedule_recurrent_function_us should be in iram (#7713)
• Re-implement PWM generator (#7715, #7712, #7022, #7231, #7800, #7996)
• WString: Optimize a bit (#7553)
• Fix sntp_get_real_time prototype in header (#7707)
• Provide String::indexOf for a char* needle (#7706)
• Fix newlib to support <+-nn> timezone names (#7699, #7702)
• BREAKING: Add Print::availableForWrite method (#7658)
• settimeofday_cb: distinguish from user or sntp (#7637)
• Add Copyright notice to Schedule.h (#7653)
• BREAKING: Add Wrong Password wifi status case (#7652)
• New flash writing method with offset/memory/size alignment handling (#7514)
• Add missing sntp_init/sntp_stop (#7628)
• Use direct member initialization instead of ctr initialisation (#7558)
• Prevent rewriting Updater_Signing.h if content unchanged (#7627)
• WString: c_str() returns null pointer after move (#7611)
• WString: mark move ctor as noexcept (#7610)
• sntp: use one time source and fix unsynchronized sntp time stamp (#7595)
• Add clear method to IPAddress (#7586)
• Check also if IP is not IPADDR_NONE (#7585)
• Fix gzip+signed OTA error (#7577)
• new w/ OOM now aborts by defaults, or throw an exception (#7536)
• getCpuFreqMHz(): fix when F_CPU is not defined (#7554)
• Updater MD5 cleanup on begin (#7534)
• Add synthetic IntegerDivideByZero exception (#7496)
• avoid circular #include dependence for PolledTimeout (#7356)
• base64 class uses String, adding harmless #include (#7517)
• sys/pgmspace.h: Refactor inline asm (#7510)
• Add SerialEvent() callback to loop processing (#7505)
• Remove warnings when building NoAssert (#7499)
• BREAKING - analogWriteRange 8-bit default (#7456)
• BREAKING - Pass String by const reference [3.0] (#6583)

Libraries - softserial

• Maintenance release 6.12.3: better dependency declarations for Platformio (#8030)
• EspSoftwareSerial 6.12.2: Inlining push() functions that must be in IRAM for calling from ISRs (#7986)
• Bug-fix release 6.12.1: a documentation error was reported by a user; dropped bit-patterns that masked the stop-bit fixed. (#7938)
• EspSoftwareSerial minor release 6.12.0 completes adaptation to new Stream::send() (#7923)
• Minor EspSoftwareSerial release 6.11.7, for deprecated ICACHE_RAM_ATTR in upcoming ESP8266 Arduino core 3.0.0. (#7922)
• EspSoftwareSerial, bump up Arduino library manager related files 6.11.6 (#7891)
• Update to EspSoftwareSerial 6.11.5 (#7889)
• EspSoftwareSerial bug-fix release 6.11.4 (#7862)
• Update to EspSoftwareSerial 6.11.3: prepares for ESP8266 Arduino core PR 6979. (#7840)
• EspSoftwareSerial 6.11.2: Delegate<> assign operators added. (#7815)
• Minor EspSoftwareSerial release 6.11.1 (#7804)
• Minor EspSoftwareSerial release 6.11.0 (#7802)
• EspSoftwareSerial bug fix release 6.10.1: preciseDelay() could delay() for extremely long time, if period duration was exceeded on entry. (#7771)
• EspSoftwareSerial 6.10.0: override keyword for recent Print::availableForWrite() addition (#7710)
• EspSoftwareSerial 6.9.0: data/strings in flash alignment handling fix. Yielding during write() improvement. (#7604)

Libraries - FS

• Update mklittlefs executable (#7906)
• Track creation time of LittleFS FS (#7873)
• Invalid read return value fix (#7817)
• Update to SdFat 2.0.2, speed SD access (#7779)
• Rationalize File timestamp callback (#7785)
• Update to LittleFS v2.3 (#7787)

Libraries - Network

• added ArduinoWiFiServer with send-to-all-clients functionality (#7612)
• internal: rename ClientContext::wait_until_sent() to wait_until_acked() (#7896)
• Added ESP32 compatible methods for setting/getting hostname (#7900)
• AP & dhcp-server: fix uninitialized variables (#7905)
• Netdump: Avoid UB and abort on nullptr buffer (#7822)
• lwip2: use pvPortXalloc/vPortFree and "-free -fipa-pta" (#7793)
• more lwIP physical interfaces (#6680)
• Netump (#7527, #7659)
• replace old Ethernet Arduino-library with v2, submoduled (#6812)

Library - WiFi

• WiFi: clean up AP SSID setter & getter, support 32 chars (#7941)
• [BREAKING] wifi: remove pseudo-modes for shutdown, expose ::[resumeFrom]shutdown() (#7956)
• [BREAKING] Disable WiFi at boot by default (#7902)
• Added broadcastIP method to WiFiSTA class (#7899)
• ...

Read more

Release 3.0.0

Great additions

• PoC cache configuration control (aka +16KB heap!) (#7060)
• Hardware WDT Stack Dump Tool (#7010)
• Update to GCC 10.2 (#7607)

Breaking: Deprecation - Removal

• BREAKING: httpclient: remove deprecated API (#7617)
• BREAKING: Update Arduino.h, remove TIM_DIV265 (#7440)
• BREAKING: Remove lwip-v1.4 specific code (#7436)
• BREAKING: Remove axTLS from code and documentation (#7437)

Breaking changes summary

• BREAKING: WString: return bool instead of unsigned char (#7939)
• BREAKING: wifi: remove pseudo-modes for shutdown, expose ::[resumeFrom]shutdown() (#7956)
• BREAKING: Disable WiFi at boot by default (#7902, #7990, #7993)
• BREAKING: base64::encode() compat with esp32: no newlines by default (#7910)
• BREAKING: Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
• BREAKING: Upgrade to upstream newlib 4.0.0 release (64 bits time_t) (#7708)
• BREAKING: Change servo defaults to safer defaults (#7023)
• BREAKING: Add Print::availableForWrite method (#7658)
• BREAKING: Change return EEPROM.end() to bool (#7630)
• BREAKING: Change return type of channel() (#7656)
• BREAKING: Change return type of RSSI() (#7657)
• BREAKING: Add Wrong Password wifi status case (#7652)
• BREAKING: analogWriteRange 8-bit default (#7456)
• BREAKING: HTTPClient: RequestHandler: Pass String by const reference (#6583)

Boot

• eboot: .RODATA, upstream uzlib, move CRC, save 112 bytes (#7844)
• Update eboot to build with C17, not C99 standard (#7837, #7838)
• Fix eboot crash with exception 28. ets_printf() should take pointer argument. (#7666)
• Use 32b loads to set print strings (#7545)
• Comment out verify step in eboot.c (#7468)

Core

• BREAKING: WString: return bool instead of unsigned char (#7939)
• ESP class should be a singleton: make all member functions static. (#8006)
• Updated HWDT to use IRAM_ATTR instead of ICACHE_RAM_ATTR. (#8013, #8018)
• Hardware WDT Stack Dump Tool (#7010)
• WString: direct operator overloads instead of StringSumHelper (#7781)
• Clean up ICACHE_RAM_ATTR in VM PR (#7924)
• Added ESP32 compatible methods for setting/getting sleep mode (#7901)
• Enable 128K virtual memory via external SPI SRAM (#6994)
• Stream::send() (#6979, #7935, #7951, #7987, #7995)
• [BREAKING] base64::encode() compat with esp32: no newlines by default (#7910)
• BREAKING - Use IRAM_ATTR in place of ICACHE_RAM_ATTR (#7921)
• OOM debug: warn about String reallocation (#7908)
• OOM: avoid warn when calling *alloc(0) (#7909)
• String: add missing long long operator implementations (#7888)
• Support to reboot into UART download mode (#7854, #7897)
• String: compatibility with 64 bits scalars (#7863)
• Update toolchain to support std::remainder (#7849)
• allow to set pin to OUTPUT_OPEN_DRAIN in analogWriteMode (#7841)
• Add 24-bit mode to I2S (#7835)
• Hexdump fix&update (#7831)
• improve silicon aes_unwrap (#7773)
• Supersede #3856, remove undef min/max (#7824)
• Add stub for analogReference() (#7809)
• UART: add yield (#7799)
• BREAKING - Upgrade to upstream newlib 4.0.0 release (#7708)
• Update to latest uzlib upstream (#7776, #7782)
• i2s: adds i2s_rxtxdrive_begin(enableRx, enableTx, driveRxClocks, driveTxClocks) (#7748)
• PoC cache configuration control (#7060, #7754, #7767, #7768, #7812, #7816, #7820, #7790)
• Receiving no data in Updater is an error (#7729)
• PROGMEM compatibility changes to String (#7724)
• schedule_recurrent_function_us should be in iram (#7713)
• Re-implement PWM generator (#7715, #7712, #7022, #7231, #7800, #7996)
• WString: Optimize a bit (#7553)
• Fix sntp_get_real_time prototype in header (#7707)
• Provide String::indexOf for a char* needle (#7706)
• Fix newlib to support <+-nn> timezone names (#7699, #7702)
• BREAKING: Add Print::availableForWrite method (#7658)
• settimeofday_cb: distinguish from user or sntp (#7637)
• Add Copyright notice to Schedule.h (#7653)
• BREAKING: Add Wrong Password wifi status case (#7652)
• New flash writing method with offset/memory/size alignment handling (#7514)
• Add missing sntp_init/sntp_stop (#7628)
• Use direct member initialization instead of ctr initialisation (#7558)
• Prevent rewriting Updater_Signing.h if content unchanged (#7627)
• WString: c_str() returns null pointer after move (#7611)
• WString: mark move ctor as noexcept (#7610)
• sntp: use one time source and fix unsynchronized sntp time stamp (#7595)
• Add clear method to IPAddress (#7586)
• Check also if IP is not IPADDR_NONE (#7585)
• Fix gzip+signed OTA error (#7577)
• new w/ OOM now aborts by defaults, or throw an exception (#7536)
• getCpuFreqMHz(): fix when F_CPU is not defined (#7554)
• Updater MD5 cleanup on begin (#7534)
• Add synthetic IntegerDivideByZero exception (#7496)
• avoid circular #include dependence for PolledTimeout (#7356)
• base64 class uses String, adding harmless #include (#7517)
• sys/pgmspace.h: Refactor inline asm (#7510)
• Add SerialEvent() callback to loop processing (#7505)
• Remove warnings when building NoAssert (#7499)
• BREAKING - analogWriteRange 8-bit default (#7456)
• BREAKING - Pass String by const reference [3.0] (#6583)

Libraries - softserial

• Maintenance release 6.12.3: better dependency declarations for Platformio (#8030)
• EspSoftwareSerial 6.12.2: Inlining push() functions that must be in IRAM for calling from ISRs (#7986)
• Bug-fix release 6.12.1: a documentation error was reported by a user; dropped bit-patterns that masked the stop-bit fixed. (#7938)
• EspSoftwareSerial minor release 6.12.0 completes adaptation to new Stream::send() (#7923)
• Minor EspSoftwareSerial release 6.11.7, for deprecated ICACHE_RAM_ATTR in upcoming ESP8266 Arduino core 3.0.0. (#7922)
• EspSoftwareSerial, bump up Arduino library manager related files 6.11.6 (#7891)
• Update to EspSoftwareSerial 6.11.5 (#7889)
• EspSoftwareSerial bug-fix release 6.11.4 (#7862)
• Update to EspSoftwareSerial 6.11.3: prepares for ESP8266 Arduino core PR 6979. (#7840)
• EspSoftwareSerial 6.11.2: Delegate<> assign operators added. (#7815)
• Minor EspSoftwareSerial release 6.11.1 (#7804)
• Minor EspSoftwareSerial release 6.11.0 (#7802)
• EspSoftwareSerial bug fix release 6.10.1: preciseDelay() could delay() for extremely long time, if period duration was exceeded on entry. (#7771)
• EspSoftwareSerial 6.10.0: override keyword for recent Print::availableForWrite() addition (#7710)
• EspSoftwareSerial 6.9.0: data/strings in flash alignment handling fix. Yielding during write() improvement. (#7604)

Libraries - FS

• Update mklittlefs executable (#7906)
• Track creation time of LittleFS FS (#7873)
• Invalid read return value fix (#7817)
• Update to SdFat 2.0.2, speed SD access (#7779)
• Rationalize File timestamp callback (#7785)
• Update to LittleFS v2.3 (#7787)

Libraries - Network

• added ArduinoWiFiServer with send-to-all-clients functionality (#7612)
• internal: rename ClientContext::wait_until_sent() to wait_until_acked() (#7896)
• Added ESP32 compatible methods for setting/getting hostname (#7900)
• AP & dhcp-server: fix uninitialized variables (#7905)
• Netdump: Avoid UB and abort on nullptr buffer (#7822)
• lwip2: use pvPortXalloc/vPortFree and "-free -fipa-pta" (#7793)
• more lwIP physical interfaces (#6680)
• Netump (#7527, #7659)
• replace old Ethernet Arduino-library with v2, submoduled (#6812)

Library - WiFi

• WiFi: clean up AP SSID setter & getter, support 32 chars (#7941)
• [BREAKING] wifi: remove pseudo-modes for shutdown, expose ::[resumeFrom]shutdown() (#7956)
• [BREAKING] Disable WiFi at boot by default (#7902)
• Added broadcastIP method to WiFiSTA class (#7899)
• WIFI_RESUME improve speed and example (#7877)
• WiFiServer.cpp: Fix warning (#7755)
• update documentation example (#7697)
• Refactor WiFi scan example (#7655)
• BREAKING: Change return type of channel() (#7656)
• BREAKING: Change return type of RSSI() (#7657)
• Reduce codesize of setOutputPower (#7572)

Library - TLS/SSL

• Fix a warning (#8014)
• Adding comment to ignore SSL certificate in sample code. (#7994)
• Update Root Certificate in example (#7932)
• Adds the method setSSLVersions() also to WiFiClientSecure in order to use that new feature. (#7925)
• Add setSSLVersion call to SSL object (#7920)
• Allow users to inherit and override CertStore (#7827)
• Reduce BearSSL code size by not -O2 FSMs (#7807)
• WiFiServerSecure: Cache SSL sessions (#7774)
• WiFiClientSecure: use context (#7680)
• Update to latest BearSSL as of Nov 2020 (#7732)
• Add Stream loaders for BearSSL (#7675)
• Catch and display SSL errors for fatal alerts (#7681)
• Fix error when debug enabled but no port chosen (#7648)
• Remove stray axtls refs, deprecated compat funcs (#7626)
• Fix error message typo (#7581)
• Update DigestAuthorization.ino (Simple example update) (#7579)
• Update certs-from-mozilla.py (#7573, #7578)
• Use root cert, not fingerprint for api.github.com (#7490)
• Update FP for tls.mbed.org (#7479)
• Change BSSL_CertStore test URL (#7370)
• Update to BearSSL version lost in GCC10 update (#7453)

Library - Webserver

• ESP8266WebServer: Add variadic template version of collectHeaders() (#7296)
• Fix header FSM in webserver, fix Windows uploads (#7805)
• ETag support for WebServer (#7709)
• Rewrite multipart boundary detection (#7728)
• Fixed bug in parsing POST file uploads (#7543)
• Fix long password validation in WebServer (#7676)
• FIX MIME-Type for txt-suffix (#7608)
• FIX StaticRequestHandler crashes when cache_header is null and DEBUG_ESP_CORE is enabled (#7609)
• Avoid #includes with a surrounding namespace (#7560)
• webserver hook: allow to handle external http protocol (#7459, #7492, #7515)
• Made ESP8266WebServer::client() return a reference (fixes #7075) (#7080)
• WebServer: Allow client to send many requests on the same connection (#7414)
• we...

Read more

Release 2.7.4

Hotfixes:

• Backport #7478: Fix uninitted class variables from #7464
• Backport #7491: Fixed PUYA flash write buffer alignment

Release 2.7.3

Hotfix against "OTA of large files results in device hangs" (#7458)

Also includes backports from 3.0.0-dev:

• boards: 4dsystems (gen4iod) updates (#7433)
• Free space of overwritten files in LittleFS (#7434)
• Keep client certs when server authentication set (#7464)
• CVE-2020-12638 workaround for WPA downgrade attack (#7486)
• Initialize _ledPin (#7487)
• Correct stack string buffer length (#7488)

Release 2.7.2

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)

Release 2.7.1

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)