Arduino ESP32 Version 2.0.4

The Arduino ESP32 version 2.0.4 based on the ESP-IDF v4.4.1 introduces new boards support, improvements, and bug fixes.

Changes

Here is a summary of the major changes.

• ESP-IDF upgrade to v4.4.1

Improvements

• Added documentation about the minimum security for connection
• Implemented a simple RGB driver via digitalWrite
• WireMaster example
• Refactor PlatformIO build scripts
• Added USB DFU and CDC tools guide in the documentation
• ADC fixes and improvements
• Added an option to skip image verification after OTA
• Improved String to print 64-bit integers
• Added DHCP Range Setup to APMode
• Update Kconfig to autoselect the proper running core
• Changed pinMode() default interrupt type DISABLED

Bugfixes

• Fixed failure paths not setting the socket to -1 consistently
• Fixed wrong #define for BUTTON
• Fixed BLE-related issues
• Fixed timerAttachInterrupt() and timerDetachInterrupt()
• Fixed TIMER timer_dev definition
• Fixed DNS Server Memory Leak when deleted

New Boards

• Added Wemos D1 Uno
• Added two more dfrobot boards
• Added add two more Feather S3s Adafruit boards
• Added Connaxio's Espoir board

Known Issues (from ESP-IDF)

Some ESP-IDF known issues may affect the Arduino ESP32 core. For a list of known issues on ESP-IDF, see the Known Issues in v4.4 in the ESP-IDF release notes.

See all bug fixes in the complete changelog below.

What's Changed

See the complete changelog down below:

• Upload component to the registry on any tag by @kumekay in https://github.com/espressif/arduino-esp32/pull/6688
• Fixes DNS Server Memory Leak when deleted by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6707
• Fix TIMER timer_dev definition by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/6716
• hil.yml: Run the Event-file job only when the PR is labeled or the by @Ouss4 in https://github.com/espressif/arduino-esp32/pull/6717
• Changed pinMode() default interrupt type DISABLED to previously set by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/6695
• Added compiler.warning_flags to platform.txt; fixing #6118 by @PilnyTomas in https://github.com/espressif/arduino-esp32/pull/6596
• fixing beginTransaction() thread safety by @smarq8 in https://github.com/espressif/arduino-esp32/pull/6425
• fix: compiler warnings about printf-format for pointers in esp32-hal-cpu.c by @ankostis in https://github.com/espressif/arduino-esp32/pull/6705
• Adds Arduino standard macro-functions by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6726
• Add support for NINA-W106 with bigger flash sizes by @mazgch in https://github.com/espressif/arduino-esp32/pull/6722
• Added overload on send to cleanly handle char arrays in WebServer by @lbernstone in https://github.com/espressif/arduino-esp32/pull/6721
• Bugfix WiFiGeneric - SoftAP DHCPServer Corrupt Log Entry by @mrengineer7777 in https://github.com/espressif/arduino-esp32/pull/6719
• Add new board XIAO_WIFI by @0hotpotman0 in https://github.com/espressif/arduino-esp32/pull/6702
• Update Kconfig to autoselect the proper running core by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/6718
• Change SPI::transfer signature to match official Arduino API by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/6734
• Adjustable Serial Event Task Stack Size And Priority by @gonzabrusco in https://github.com/espressif/arduino-esp32/pull/6685
• workflows/hil.yml: Don't run the scheduled HIL workflow on forks. by @Ouss4 in https://github.com/espressif/arduino-esp32/pull/6753
• Adds DHCP Range Setup to APMode by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6731
• Extends String to print 64-bit integers by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6768
• HW TEST - Timer by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/6754
• Add option to skip image verification after OTA by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/6779
• Update bootloaders with dont-append-digest by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/6800
• adds verbose message for WPA3 by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6812
• ADC fixes and improvements by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/6799
• Doc: WiFi library description: remove specific mention of wifi encryption. by @Rotzbua in https://github.com/espressif/arduino-esp32/pull/6671
• BluetoothSerial : Re-set _isRemoteAddressSet to false if connect() fails by @h-actsafe in https://github.com/espressif/arduino-esp32/pull/6728
• SD library: reduce stack size requirement by 4k by moving work buffer to heap by @mazgch in https://github.com/espressif/arduino-esp32/pull/6745
• Fix timerAttachInterrupt() and timerDetachInterrupt() in esp32-hal-timer.c by @sweetlilmre in https://github.com/espressif/arduino-esp32/pull/6763
• workflows/upload-idf-component.yml: Fix the wildcard. by @Ouss4 in https://github.com/espressif/arduino-esp32/pull/6771
• Update littlefsbuilder.py by @sonictl in https://github.com/espressif/arduino-esp32/pull/6774
• Remove GCC -Wextra warnings from build process by @earlephilhower in https://github.com/espressif/arduino-esp32/pull/6782
• Remove nonexisting folder from include path by @maxgerhardt in https://github.com/espressif/arduino-esp32/pull/6798
• Fix linking to make initVariant() work by @maxgerhardt in https://github.com/espressif/arduino-esp32/pull/6809
• [UART/SERIAL] CTS / RTS pins were swapped in this API by @mazgch in https://github.com/espressif/arduino-esp32/pull/6816
• Add support for Connaxio's Espoir devboard by @ma-lalonde in https://github.com/espressif/arduino-esp32/pull/6822
• update adafruit boards tinyuf2 and partition scheme by @hathach in https://github.com/espressif/arduino-esp32/pull/6770
• [DOCS] Added partition table tutorial by @pedrominatel in https://github.com/espressif/arduino-esp32/pull/6758
• Fix fail to set single byte that contains the slave address by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/6840
• Hide get.py download percent when not interactive by @earlephilhower in https://github.com/espressif/arduino-esp32/pull/6852
• wifi: fix esp32 dual antenna issue by @MaxwellAlan in https://github.com/espressif/arduino-esp32/pull/6841
• changed the board name Seeed XIAO wifi to XIAO esp32c3 by @0hotpotman0 in https://github.com/espressif/arduino-esp32/pull/6826
• [WiFiSTA] Remove duplicate setting of SSID and password. by @Rotzbua in https://github.com/espressif/arduino-esp32/pull/6825
• Feature/aw2eth by @patricklaf in https://github.com/espressif/arduino-esp32/pull/6829
• fixes BLE HID Battery Level Indicator by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6864
• [DOCS] Added USB DFU and CDC tools guide by @pedrominatel in https://github.com/espressif/arduino-esp32/pull/6756
• [WiFi] Clarify arduino wifi debug output by @Rotzbua in https://github.com/espressif/arduino-esp32/pull/6907
• Fixes reading BLE Remote Descriptor by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6903
• Fixing Tone; solving #6877 by @PilnyTomas in https://github.com/espressif/arduino-esp32/pull/6898
• fixes BLE and WiFi Debug log messages by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6902
• Refactor PlatformIO build scripts by @valeros in https://github.com/espressif/arduino-esp32/pull/6887
• Doc: update wifi encryption description by @Rotzbua in https://github.com/espressif/arduino-esp32/pull/6880
• WireMaster example clarity by @Luuccc in https://github.com/espressif/arduino-esp32/pull/6844
• Implement simple RGB driver via digitalWrite; solving #6783 by @PilnyTomas in https://github.com/espressif/arduino-esp32/pull/6808
• Added maxOpenFiles to SDMMC by @lbernstone in https://github.com/espressif/arduino-esp32/pull/6912
• Doc: Update deprecation of setAutoConnect, etc.. by @Rotzbua in https://github.com/espressif/arduino-esp32/pull/6908
• add two more feather S3s by @ladyada in https://github.com/espressif/arduino-esp32/pull/6881
• Fixes BLE Server descriptor update by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6919
• Doc: Add doc about minimum security for connection to AP by @Rotzbua in https://github.com/espressif/arduino-esp32/pull/6909
• Add two more dfrobot microcontroller board definitions by @wxzed in https://github.com/espressif/arduino-esp32/pull/6890
• Fixes wrong #define for BUTTON by @SuGlider in https://github.com/espressif/arduino-esp32/pull/6941
• Add Wemos D1 Uno R32 by @jerry-jho in https://github.com/espressif/arduino-esp32/pull/6944
• IDF release/v4.4 by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/6910
• Fixed failure paths not setting socket to -1 consistently, changed close to lwip_close to resolve assert by @Anx2k in https://github.com/espressif/arduino-esp32/pull/6942
• WIP; Reworked HiFreq_ADC example; Closing #6832 by @PilnyTomas in https://github.com/espressif/arduino-esp32/pull/6917
• Rainmaker library extension by @sivar2311 in https://github.com/espressif/arduino-esp32/pull/6813

New Contributors

A special thank you to all new contributors!

• @kumekay made their first contribution in https://github.com/espressif/arduino-esp32/pull/6688
• @smarq8 made their first contribution in https://github.com/espressif/arduino-esp32/pull/6425
• @0hotpotman0 made their first contribution in https://github.com/espressif/arduino-esp32/pull/6702
• @h-actsafe made their first contribution in https://github.com/espressif/arduino-esp32/pull/6728
• @sweetlilmre made their first contribution in https://github.com/espressif/arduino-esp32/pull/6763
• @sonictl made their first contribution in https://github.com/espressif/arduino-esp32/pull/6774
• @ma-lalonde made their first contribution in https://github.com/espressif/arduino-esp32/pull/6822
• @MaxwellAlan made their first contribution in https://github.com/espressif/arduino-esp32/pull/6841
• @patricklaf made their first contribution in https://github.com/espressif/arduino-esp32/pull/6829
• @Luuccc made their first contribution in https://github.com/espressif/arduino-esp32/pull/6844
• @wxzed made their first contribution in https://github.com/espressif/arduino-esp32/pull/6890
• @jerry-jho made their first contribution in https://github.com/espressif/arduino-esp32/pull/6944
• @Anx2k made their first contribution in https://github.com/espressif/arduino-esp32/pull/6942
• @sivar2311 made their first contribution in https://github.com/espressif/arduino-esp32/pull/6813

Full Changelog: https://github.com/espressif/arduino-esp32/compare/2.0.3...2.0.4

To see how to contribute to the Arduino ESP32 project, see this reference: Contributing