4.4.0

• Added compatibility with PIO Core 6.0
• Improved support for bare assembly programming

4.3.0

• Added new boards: Adafruit Feather ESP32-S3 No PSRAM, Adafruit Feather ESP32 V2, Adafruit QT Py ESP32, Adafruit QT Py ESP32-C3, Adafruit QT Py ESP32-S3, AirM2M CORE ESP32C3, Deneyap Kart 1A, Espressif ESP32-S3-DevKitC-1, Espressif ESP32-S3-Box, ESP32S3 CAM LCD, WEMOS LOLIN C3 Mini, WEMOS LOLIN S2 Mini, WEMOS LOLIN S2 PICO, Trueverit ESP32 Universal IoT Driver MK III, Unexpected Maker FeatherS3, Unexpected Maker PROS3, Unexpected Maker RMP, Unexpected Maker TinyS3, SQFMI Watchy v2.0
• Added support for Arduino v2.0.3 (release notes)
• Refactored processing of IDF linker fragments #760
• Fixed an issue with improper optimization level for IDF bootloader that caused bootloop in debug mode #739

4.2.0

• Added new boards:
  • Adafruit Feather ESP32-S2 TFT
  • Adafruit QT Py ESP32-S2
  • DPU ESP32
  • PyCom WiPy3
  • Wireless-Tag WT32-ETH01
• Added support for Arduino v2.0.2 (release notes)
• Updated esptoolpy to v3.3 (#770) (release notes)
• Added CMSIS-DAP as available debug probe (#771)
• Minor fixes and improvements

4.1.0

• Added new board TTGO T-OI PLUS RISC-V ESP32-C3
• Added support for Arduino v2.0.1 (#619) (release notes)
• Updated toolchain packages to v8.4.0-patch3

4.0.0

• Added new boards:
  • Adafruit FunHouse, Adafruit MagTag 2.9, Adafruit Metro ESP32-S2, ATMegaZero ESP32-S2, Deneyap Kart, Deneyap Mini, Denky32, Denky D4, Franzininho WiFi, Franzininho WiFi MSC, MakerAsia KB32-FT, microS2, SparkFun ESP32 MicroMod, SparkFun ESP32-S2 Thing Plus, Trueverit ESP32 Universal IoT Driver, Trueverit ESP32 Universal IoT Driver MK II, Unexpected Maker FeatherS2, Unexpected Maker FeatherS2 Neo, Unexpected Maker TinyS2, uPesy ESP32 Wroom DevKit, uPesy ESP32 Wrover DevKit
• Added support for Arduino v2.0.0 (#619, #652, #591) (release notes)
• Added support for LittleFS and FFat filesystems (#546, #570, #643)
• Updated OpenOCD package to v0.11.0-esp32-20220411 (release notes)
• Added a feature of uploading filesystem images via a debug tool (#177, #422)
• Fixed an issue with incorrect objcopy binary used for embedding external files (#714)
• Fixed an inconsistency with not used offset_address option when uploading via esptool (#538)
• Deprecated support for Simba and Pumbaa frameworks
• Minor fixes and improvements (#547, #603)

Dynamic toolchain configuration for upstream Arduino framework

The Arduino framework for ESP32 SoCs is being rapidly developed and sometimes depends on cutting-edge packages that are not available in the stable version of the development platform. For this reason, we added some user-friendly functionality that dynamically parses relevant toolchain versions directly from a remote source and configures the development platform accordingly. Please note that this new functionality may possibly affect only those who have manually overridden the framework-arduinoespressif32 package to point to a Github repository via the platform_packages option. In case you're experiencing any problems with this feature, you can disable it via the board_build.arduino.upstream_packages option in your platformio.ini file:

[env:ttgo-lora32-v21]
platform = espressif32
framework = arduino
board = ttgo-lora32-v21
platform_packages = 
    framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git

; Disable dynamic toolchain configuration for upstream Arduino packages
; board_build.arduino.upstream_packages = no

Notes on deprecating Simba and Pumbaa frameworks:

This release deprecates support for the Simba and Pumbaa frameworks. To keep projects based on these frameworks compilable please lock the platform version to v3.5.0 in your platformio.ini file:

[env:nano32]
platform = espressif32 @ ~3.5.0
framework = pumbaa
board = nano32

3.5.0

• Added new boards:
  • Franzininho WiFi
  • LionBit
• Updated ESP-IDF to v4.3.2 (release notes)
• Updated toolchains for ESP-IDF to v8.4.0r2-patch2
• Removed redundant PSRAM fix for M5 Stack Core2 (#676)

3.4.0

• Updated ESP-IDF to the latest 4.3.1 (release notes) (#635)
• Updated toolchains for ESP-IDF to v8.4.0 (#655)
• Fixed partition offset calculation process (#627)
• Fixed a regression with incorrect flash modes used for uploading (#584, #623, #630)
• Fixed an issue with incorrect command used for embedding plain files in IDF-based projects (#639)

3.3.2

• Better handling of custom ESP-IDF packages (#593)
• Fixed RAM size for M5Stack Core2 and M5Stack FIRE (#596)
• Fixed an issue with whitespace characters in file names specified as binary data (#604)
• Fixed flash mode for the TinyPICO board (#615)

3.3.1

• Esp32ExceptionDecoder now supports uppercase hex addresses in backtraces (#582)
• Better handling of ESP-IDF configuration files (#588)
• Disabled dynamic reconfiguration of SPI Flash mode for esptoolpy (#584)

3.3.0

• Added new board: Espressif ESP32-C3-DevKitM-1
• Updated ESP-IDF to the latest stable 4.3
  • Support for the ESP32-C3 SoC
  • Updated FreeRTOS, based on upstream version v10.2.0
  • Improved heap algorith based on TLSF
  • See more changes in the release notes
• Updated OpenOCD to the latest v0.10.0-20210401 (release notes)
• sdkconfig files are now generated for each environment separately (#539)
• The global IDF_TOOLS_PATH variable is now disabled within the isolated PlatformIO environment (#555)
• Minor bugfixes and improvements