The Arduino ESP32 version 3.0.1 is first bugfix release based on the ESP-IDF v5.1.4 (release notes).

For version migration, please check Migration Guide from v2.X to 3.X

Libraries

• Fix getFlashChipMode breaking on S3 and C3 by @me-no-dev in #9758

Networking

• fix(net): Don't unregister events if there are interfaces still open by @me-no-dev in #9706
• fix(net): Fix IPv4 address construction from ip_addr_t and comparison (#9724) by @mathieucarbou in #9725
• feat (WiFiScan): Allow setting scan timeout in milliseconds by @me-no-dev in #9738
• fix(tls): do not attach bundle from runtime by @me-no-dev in #9763
• fix(ssl): Fix load stream memory leak by @me-no-dev in #9767

Peripherals

USB

• feat(usb): Support the new USB IDF API by @me-no-dev in #9761

Arduino as ESP-IDF component

• fix(IDF): Define max IDF version for the component by @me-no-dev in #9703
• feat(idf): Require esp_psram when as component by @me-no-dev in #9762
• fix(idf): Require MDNS as public by @me-no-dev in #9764

Boards Updates & Additions

• fix(3rd party board): Changed Board name to describe board more clearly by @SooDragon in #9773
• Updated Smart Bee Boards for IDE2 & CLI by @strid3r21 in #9778
• add upload_port vid/pid for Adafruit boards by @hathach in #9779
• Addition (3rd_party_board): Add board support for Autosport Labs ESP32-CAN-X2 development board by @brentpicasso in #9683
• fix(boards): Remove duplicate VID/PID from boards.txt and add default CDC/JTAG board by @me-no-dev in #9717
• fix(variant): Arduino Nano ESP32 variant fix for core 3 by @JAndrassy in #9722
• Updated UM boards for IDE2 & CLI by @UnexpectedMaker in #9726
• feat(boards): Add Zigbee menu for all C6/H2 boards by @P-R-O-C-H-Y in #9754
• Add missing parameter to esp32_family board for IDE1 by @me-no-dev in #9759
• feat(partition): Add 4MB No File System partition scheme by @me-no-dev in #9769

Tooling

• fix(release): install missing 'packaging' package by @me-no-dev in #9698
• feat(tools):Use Windows native path separator in ESP_SR model copy command pattern by @per1234 in #9649
• feat(tools): Updated get.py with ability to verify extracted files and skip if ok by @me-no-dev in #8720
• fix(release): Shorten all toolchain names/versions by @me-no-dev in #9760

CI & Testing

• ci(wokwi): Self host Wokwi CLI server by @lucasssvaz in #9701
• fix(ci): Compare correct name of the artifact by @P-R-O-C-H-Y in #9708
• ci(external_libs): Add ZACwire to External libraries compilation test by @lebuni in #9705
• ci(external_libs): Add EthernetESP32 to ext. libraries compilation test by @JAndrassy in #9747
• ci(sizes): Sites test between master and 2.x branch by @P-R-O-C-H-Y in #9755

Documentation

• feat(reports): Update Issue-report.yml with new versions by @me-no-dev in #9699
• change(readme): Update C6 and H2 support by @lucasssvaz in #9697
• docs(libraries): Add new SoCs H2 and C6 to missing parts in docs by @P-R-O-C-H-Y in #9709
• docs(component): Improve Arduino as component documentation by @lucasssvaz in #9765

Full Changelog: 3.0.0...3.0.1

New Contributors

• @lebuni made their first contribution in #9705
• @brentpicasso made their first contribution in #9683
• @mathieucarbou made their first contribution in #9725

Thank you for your contribution 🎉

Contributors

• @mathieucarbou
• @hathach
• @UnexpectedMaker
• @brentpicasso
• @per1234
• @JAndrassy
• @me-no-dev
• @lucasssvaz
• @strid3r21
• @lebuni
• @SooDragon
• @P-R-O-C-H-Y

The Arduino ESP32 version 3.0.0-stable is based on the ESP-IDF v5.1.4 (release notes) and is major release introducing new SoCs & features support.

This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6. ESP32-C2 support added, for usage you need to build the libraries using ESP32 Arduino Lib builder.

For version migration, please check Migration Guide from v2.X to 3.X

Overview of major changes in 3.0.0 Release

• in progress

Release notes of development releases

• in progress

Libraries

Networking

• fix(eth): Attach ETH events at the correct place by @me-no-dev in #9658
• feat(eth): Enable the possibility to use SPI ETH with only 4 wires by @me-no-dev in #9659
• fix(eth): Fix ETH.end() by @me-no-dev in #9661
• fix(eth): Fix ETH.stop() with IDF SPI by @me-no-dev in #9693

Peripherals fixes

• fix(adc): Remove masking for ADC channel number by @P-R-O-C-H-Y in #9692
• fix(esp-hal-log):Provide a default TAG name for USE_ESP_IDF_LOG logging macro by @mairas in #9686

3rd party boards updates & editions

• Update(3rd_party_board): Updated ESPDuino with extra options by @alexceltare2 in #9642
• feat (3rd_party_board): add support for WeAct Studio ESP32C3 by @loozhengyuan in #9653
• Nano ESP32: delete programmer.default entry (on main) by @pillo79 in #9666
• feat(3rd_party_board):Add GPIO pin mappings for M5Stack CamS3 Unit and select OPI PSRAM by default by @tarosay in #9688

Documentation

• docs(ledc.rst):Fixed outdated function signature (ledcWrite) by @leandromattioli in #9680

Tooling

• Update Kconfig.projbuild to fix LittleFS selective compilation by @monte-monte in #9684
• fix(release): Update merge_package.py by @me-no-dev in #9694

Full Changelog: 3.0.0-rc3...3.0.0

New Contributors

• @loozhengyuan made their first contribution in #9653
• @monte-monte made their first contribution in #9684
• @leandromattioli made their first contribution in #9680
• @tarosay made their first contribution in #9688
• @mairas made their first contribution in #9686

Thanks for your contribution 🎉

Contributors

• @pillo79
• @mairas
• @leandromattioli
• @tarosay
• @loozhengyuan
• @monte-monte
• @alexceltare2
• @me-no-dev
• @P-R-O-C-H-Y

The Arduino ESP32 version 2.0.17 is based on the ESP-IDF v4.4.7 (release notes) and is bug fix release for Arduino ESP32 Core version 2.X.X.

Fixes

Peripherals

• feat(hwcdc): Fixes HWCDC fw uploading by @SuGlider in #9660

Boards updates & additions

• Nano ESP32: delete programmer.default entry (on 2.0.x) by @pillo79 in #9665

Full Changelog: 2.0.16...2.0.17

Thanks for your contribution 🎉

Contributors

• @pillo79
• @SuGlider

The Arduino ESP32 release candidate version 3.0.0-RC3 is based on the ESP-IDF v5.1 (release notes) and is major release supporting new version of ESP-IDF 5.1.

This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6. ESP32-C2 support added, for usage you need to build the libraries using ESP32 Arduino Lib builder.

For version migration, please check Migration Guide from v2.X to 3.X

Libraries updates

Networking

• fix(net): Add back the friend classes required for Ethernet.h to work by @me-no-dev in #9635
• NetworkClientSecure - copyability improvements and _timeout shadowing fixed by @JAndrassy in #9632
• Add support for specifying a WPA2 EAP-TTLS phase 2 method to WiFi.begin by @me-no-dev in #9639

USB

• feat(usb): Remove redundant absolute mouse support by @me-no-dev in #9640

Peripherals updates

LEDC

• fix(ledc): Match channel number with groups by @P-R-O-C-H-Y in #9638

HWCDC

• fix(cdc): Disable SOF interrupt and CDC reset on begin() by @me-no-dev in #9628

UART

• Fixes log with NULL ptr by @SuGlider in #9637

Examples

• Zigbee examples update by @P-R-O-C-H-Y in #9627

Documentation

• docs(lib-builder): Add docker image documentation by @lucasssvaz in #9621
• docs(c2): Add note about ESP32-C2 support to documentation by @lucasssvaz in #9629

CI & Testing

• ci(wokwi): Fix concurrency by @lucasssvaz in #9625

Full Changelog: 3.0.0-rc2...3.0.0-rc3

Thanks for your contribution! 🎉

Contributors

• @JAndrassy
• @me-no-dev
• @lucasssvaz
• @SuGlider
• @P-R-O-C-H-Y

The Arduino ESP32 release candidate version 3.0.0-RC2 is based on the ESP-IDF v5.1 (release notes) and is major release supporting new version of ESP-IDF 5.1.

This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6. ESP32-C2 support added, for usage you need to build the libraries using ESP32 Arduino Lib builder.

For version migration, please check Migration Guide from v2.X to 3.X

Libraries updates

BLE

• BLEAdvertising.h: Fix spelling mistake in setScanFilter parameter by @Deadolus in #9609

Networking

• Add support for PPP Modems to Arduino by @me-no-dev in #9518
• fix(config): Fix wrong names in Kconfig that cause Network and NetworkClientSecure to fail by @me-no-dev in #9583
• NetworkClient - close the connection in stop() method by @JAndrassy in #9542
• NetworkClientSecure made copyable by @JAndrassy in #9612
• Ethernet - MAC address parameter for beginSPI by @JAndrassy in #9539

Updater

• Fix typo in Updater.cpp by @eltociear in #9511

WebServer

• fix(RAM): define HTTP_METHOD_STR as static const to save RAM by @craiglink in #9594

Eeprom

• Arduino core for the esp32 - Add new function "bool isDirty()" to EEPROM.h and EEPROM.cpp by @Rob58329 in #9611

Peripherals updates

ADC

• Fixed typo for adc_continuous_data typedef in esp32-hal-adc.h/.c by @Darkl0ud in #9529

UART

• Fix hal-uart truncated tx/rx buffer size (uint16_t -> uint32_t) by @Unbinilium in #9554
• Change log level of UART events by @SuGlider in #9563

HWCDC

• feat (hwcdc): ports changes made in 2.0.15 by @SuGlider in #9565

USBMSC

• feat(usbmsc): Add is_writable function to the USBMSC class. by @happycodefarm in #9569

Boards additions & updates

• change(roboheart): Update of LED_ROBOHEART in RoboHeart Hercules pins... by @evgenimelan in #9494
• fix GeebkleMINI ESP32C3: add variable for support internal built in switch by @SooDragon in #9499
• Reduced GPIO17 (Ethernet clock GPIO) signal strength to reduce noise. by @OlimexSupport in #9623
• change(variant): add additional pin mappings and #define to variant/unphone9 by @garethhcoleman in #9577
• fix: I2C pin are relocated for arduino nano compatability by @SooDragon in #9610

CI & Testing

• Refactor repository with pre-commit hooks by @lucasssvaz in #9515
• Style Checker and Pre-commit hook CI by @lucasssvaz in #9132
• Convert script from Python 2 to 3 by @lucasssvaz in #9513
• fix(ftm): Fix compilation warning by @lucasssvaz in #9508
• ci(touch_test): Change released test value for ESP32 by @lucasssvaz in #9521
• [CI] Add Sizes Results workflow + fix of External lib results by @P-R-O-C-H-Y in #9523
• ci(pre-commit): Enforce that the pre-commit checks are run before merge by @lucasssvaz in #9525
• [CI] Get sizes from push workflow, updated build scripts by @P-R-O-C-H-Y in #9524
• Convert script from Python 2 to 3 by @lucasssvaz in #9513
• ci(install): Change "arch" to distro-agnostic "uname -m" by @lucasssvaz in #9537
• ci(pre-commit): Fix PR checks and cache by @lucasssvaz in #9531
• ci(qemu): Add QEMU emulator to CI by @lucasssvaz in #9558
• Fix External libs test to not upload PR number if not labeled by @P-R-O-C-H-Y in #9534
• ci(performance): Add performance tests to CI by @lucasssvaz in #9560
• feat(ci): Run Wokwi tests on PR by @P-R-O-C-H-Y in #9597
• ci(wokwi): Add Wokwi emulator to workflow by @lucasssvaz in #9540
• ci(libs): Add concurrency group to external libs test by @lucasssvaz in #9535
• refactor(style): Change some style options by @lucasssvaz in #9526
• ci(hil): Touch skip file when platform is skipped by @P-R-O-C-H-Y in #9605

Documentation

• feat(doc): Add note about default pin changes to migration guide by @lucasssvaz in #9507
• docs(flags): Add build system breaking changes to migration guide by @lucasssvaz in #9574
• Docs: Typo fix in installing guide by @VojtechBartoska in #9581

Tooling

• fix(release): Temporary halt JSON uploads on release, until generator is fixed by @me-no-dev in #9536
• add LittleFS as partition type to debug report by @Jason2866 in #9354

Full Changelog: 3.0.0-rc1...3.0.0-rc2

New Contributors

• @eltociear made their first contribution in #9511
• @evgenimelan made their first contribution in #9494
• @Darkl0ud made their first contribution in #9529
• @Unbinilium made their first contribution in #9554
• @craiglink made their first contribution in #9594
• @Rob58329 made their first contribution in #9611
• @Deadolus made their first contribution in #9609
• @happycodefarm made their first contribution in #9569
• @OlimexSupport made their first contribution in #9623

Thanks for your contribution! 🎉

Contributors

• @craiglink
• @Deadolus
• @happycodefarm
• @JAndrassy
• @Darkl0ud
• @me-no-dev
• @Unbinilium
• @eltociear
• @Jason2866
• @Rob58329
• @garethhcoleman
• @lucasssvaz
• @SuGlider
• @VojtechBartoska
• @SooDragon
• @P-R-O-C-H-Y
• @evgenimelan
• @OlimexSupport

The Arduino ESP32 version 2.0.16 is based on the ESP-IDF v4.4.7 (release notes) and is bug fix release for Arduino ESP32 Core version 2.X.X.

Fixes

• fix: restores UART1/2 pins as in 2.0.14 by @SuGlider in #9502
• feat (uart): uses the same IDF 32bits size for TX/RX buffers by @SuGlider in #9561

Full Changelog: 2.0.15...2.0.16

Thanks for your contribution 🎉

Contributors

• @SuGlider

The Arduino ESP32 release candidate version 3.0.0-RC1 is based on the ESP-IDF v5.1 (release notes) and is major release supporting new version of ESP-IDF 5.1.

This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6. ESP32-C2 support added, for usage you need to build the libraries using ESP32 Arduino Lib builder.

For version migration, please check Migration Guide from v2.X to 3.X

Major changes

• IPv6 Support for ESP32 Arduino by @me-no-dev in #9016
• 3.0.0 Network Refactoring by @me-no-dev in #8760
• Implement official Arduino IDE debugger API by @pillo79 in #9116
• Feature: New Class MacAddress similar to IPAddress by @P-R-O-C-H-Y in #9304
• Add ESP-NOW Arduino library by @P-R-O-C-H-Y and @me-no-dev in #9395

Peripherals updates

UART

• UART: fixes begin() after a previous begin() :: deleting previous RX/TX buffers and its data by @SuGlider in #9095
• HardwareSerial Available For Write by @SuGlider in #9319
• HardwareSerial:begin() changes RTS and CTS pins preventing detaching those pins by @SuGlider in #9353
• Fixes HW Serial attaching pins, PHY initialization, crash after end() by @SuGlider in #9365

I2C

• Fix i2c compilation when #define CONFIG_DISABLE_HAL_LOCKS=1 by @P-R-O-C-H-Y in #9164
• Fix ambiguous for TwoWire::requestFrom() methods and align API with Arduino.cc by @safocl in #8817

RMT

• Adds RMT End of Transmission Level API by @SuGlider in #9238
• Update new RMT function rmtSetEOT(pin, EOT_Level) in the pin remap macros by @SuGlider in #9266

LEDC

• Add missing include for SemaphoreHandle_t to LEDC header file by @sgryphon in #9134
• LEDC - Allow custom channel selection by @P-R-O-C-H-Y in #9031
• feature(ledc): Add output invert option for LEDC pin + minor fixes by @P-R-O-C-H-Y in #9257

SPI

• SPI - Allow detaching of some SPI pins without stopping SPI by @P-R-O-C-H-Y in #9117
• SPI (fix): Adds SPI 3 to the ESP32-S2 and adds comments about it by @SuGlider in #9216
• Fix spiTransaction not updating clock line immediately (#9221) by @and3rson in #9333
• Fix spiTransaction not updating clock line immediately (C2,C6,H2) by @P-R-O-C-H-Y in #9335

GPIO

• Add methods to enable/disable GPIOs interrupt by @P-R-O-C-H-Y in #9025
• Improve Log Messages in GPIO HAL by @SuGlider in #9011
• Add: make digitalRead() for RGB_BUILTIN work by @holgerlembke in #9419

HWCDC

• Fixes the hardware cdc jtag plugged/unplugged status and related timeout/delay by @SuGlider in #9275
• fixes default 100ms delay with HWCDC write() is CDC is not connected by @SuGlider in #9307
• fix: perimgr + begin by @SuGlider in #9331
• fix: HW CDC write() by @SuGlider in #9401

Other peripherals changes

• Fixes sigmaDeltaAttach() when another peripheral is already attached using the same pin by @SuGlider in #9268
• Fixed the String::lastIndexOf bug by @a1ext in #9003
• Fixes EspClass::deepSleep(64 bits) by @SuGlider in #9077
• change(esp32): Added clearing of queue with unTone() by @tanakamasayuki in #9055
• change(MD5Builder): Const-correctness. by @StefanOberhumer in #9104
• Rework cbuf to use FreeRTOS Ringbuffer by @me-no-dev in #7860
• Update binary.h by @Jason2866 in #9323
• core Server class back to Arduino Core API version by @JAndrassy in #9447

Libraries updates

WiFi (Network) related

• Fix race condition in WiFiGenericClass::hostByName by @MattiasTF in #8672
• ESPLwIPClient::setTimeout conflict fix with Stream::setTimeout by @P-R-O-C-H-Y in #6676
• Remove setTimeout from WifiClientSecure by @P-R-O-C-H-Y in #8998
• WiFiClients.setConnectionTimeout added by @JAndrassy in #8863
• Add v6 support to IPAddress to match ArduinoCore-API by @sgryphon in #7174
• Fix IPv6-only DNS by checking IPv6 first if have a public scope address by @sgryphon in #9443
• Revert "WiFiSTA - allow using DHCP again after disconnecting static IP" by @JAndrassy in #8873
• undeprecate WiFiServer::available() by @SuGlider in #9027
• WiFi.disconnect() "aligned with Aduino.cc". waiting for status change. by @JAndrassy in #9062
• WiFiClient - assignment shouldn't stop connection by @JAndrassy in #9029
• Revert "undeprecate available() (#9027)" by @JAndrassy in #9165
• WiFiServer - don't inherit from Print and Server by @JAndrassy in #8930
• Improves WiFiMulti by @SuGlider in #9139
• Add support for hidden networks in WiFiMulti by @lucasssvaz in #9202
• feat(wifi): Add support for NAPT to WIFI AP by @me-no-dev in #9478
• fix(ethernet): move event listener earlier to avoid missing event ETH_CONNECTED by @s-hadinger in #9481
• fix(tls): Enable IPv6 support in ssl_client connect by @sgryphon in #9470
• feat(dns): Check type of IP addresses and clear DNS cache if they changed by @sgryphon in #9476
• WiFi.config handle Arduino parameters ordering and auto dns,gw,mask by @JAndrassy in #9425
• Ensure that Static IP configuration for network interfaces is kept until STOP by @me-no-dev in #9445
• WiFi BSSID getter fix by @JAndrassy in #9434
• Use WiFi.mode to enable/disable the Network Interfaces by @me-no-dev in #9436
• WiFiClient - rename flush() to clear() by @JAndrassy in #9453
• ETH: Support physical address auto detection by @P-R-O-C-H-Y in #9313
• Network refactoring - fix some IPv6 DNS issues by @sgryphon in #9439
• Add option to specify AP auth mode and cipher by @me-no-dev in #9454
• Add MacAddress string constructor by @lucasssvaz in #9400
• Add method to set the WiFi radio channel by @lucasssvaz in #9405
• Support for STARTLS/STARTSSL in-band transport upgrades/renegotation by @dirkx in #9100
• [Enhancement] Support no-IRQ for SPI Ethernet W5500 by @TD-er in #9251
• Fix NetworkManager compilation warning by @lucasssvaz in #9452
• feat(net): Add support for selecting the default network interface by @me-no-dev in #9457
• feat(net): Add support for esp_netif flags by @me-no-dev in #9460

Bluetooth & BLE related

• fix(esp32): Added a timeout option to the BLEClient's connect function by @LiveSparks in #9005
• Fixes Pointer and Call using Serial BT callback by @SuGlider in #9245

USB

• Enable USB Serial only if selected by @me-no-dev in #9294
• Fixes ESP32-S2 CDC Debug Logging by @SuGlider in #7284
• fix: USB HID Keyboard raw report by @SuGlider in #9473
• Add ...

Contributors

• @AronRubin
• @pillo79
• @and3rson
• @pedrominatel
• @sgryphon
• @dirkx
• @squix78
• @leifclaesson
• @lboue
• @ladyada
• @sebromero
• @Stanimir-Petev
• @everslick
• @StefanOberhumer
• @holgerlembke
• @prplz
• @cydanil
• @deisterhold
• @imyelo
• @UnexpectedMaker
• @tcsullivan
• @TD-er
• @nathannau
• @kinoh
• @Viproz
• @lyusupov
• @tanakamasayuki
• @JAndrassy
• @arendst
• @me-no-dev
• @a1ext
• @bkari02
• @LiveSparks
• @edspark
• @dok-net
• @lbernstone
• @Jason2866
• @safocl
• @vortigont
• @andreock
• @dependabot
• @jhiggason
• @lucasssvaz
• @Heltec-Aaron-Lee
• @theeprawn
• @mrengineer7777
• @Gitshaoxiang
• @Maxwelltoo
• @s-hadinger
• @Quency-D
• @SuGlider
• @akeemlh
• @VojtechBartoska
• @DevZillion
• @SooDragon
• @econeale
• @matthias-bs
• @P-R-O-C-H-Y
• @sfe-SparkFro
• @MattiasTF
• @c4801725870
• @powerfeatherdev

The Arduino ESP32 version 2.0.15 is based on the ESP-IDF v4.4.7 (release notes) and is bug fix release for Arduino ESP32 Core version 2.X.X.

Known Issues

• UART pins definition changed (breaking change) - (related issue with workaround)

Major changes & fixes

• IDF 38eeba213a by @me-no-dev in #9339 (update to ESP-IDF v4.4.7)
• backports HWCDC to v2.0.15 by @SuGlider in #9462
• Fixes set pins return value in 2.0.13 by @SuGlider in #8644
• feat: adds baudrate detection to S3 and C3 using LL API for all SoC by @SuGlider in #9261
• feat(uart): backports UART pin attachment from 3.0.0 to 2.0.15 by @SuGlider in #9176

Peripherals

• fix(adc): Always use default read resolution in __analogReadMilliVolts by @bkari02 in #9006
• Fixes issue related to writing RGB LED fast in a row by @SuGlider in #9374
• fix: UART0 boot pin setup by @SuGlider in #9373
• fix: HWCDC removed clearing USB Serial/JTAG interrupts during begin (#9316) by @kiran-desilva in #9344

Libraries

• SD library: Fix format by @Jason2866 in #9124
• Backport for v2.x : fix(sd): AquireSPI lock in sdcard_uninit by @P-R-O-C-H-Y in #9469
• Adjust Update Library license by @SuGlider in #9448
• Backport fix linker failure by @Jason2866 in #9121
• Add and init new LittleFS options by @Jason2866 in #9122
• WebServer: use MD5Builder instead of mbedtls by @Jason2866 in #9123
• Backport: simplifying webserver file uploads via form POST by @Jason2866 in #9211
• Backport: ArduinoOTA upload intermittent failure fixed by @Jason2866 in #9215
• Backport: Fix ESP32-Solo WDT on HTTP OTA update by @Jason2866 in #9223
• Handle large octet-stream by @nathannau in #9430

Boards additions and updates

• Rename variants/heltec_wifi_kit_32_V3 to match entry in boards.txt. by @audiophyl in #8886
• Add support for the MotorGo Mini board by @SwapnilPande in #9269
• MotorGo Mini 1 - Update LED_STATUS to match latest board revision by @SwapnilPande in #9298
• add senseBox MCU-S2 by @mariopesch in #9263
• ESP32-S3 PowerFeather Support for v2.x by @powerfeatherdev in #9325
• Define Wire1 pins for ESP32-S3 PowerFeather by @powerfeatherdev in #9398
• backport: variants from 3.0.0 + fixes by @SuGlider in #9381

Tooling

• Support relative paths in UNIX search PATH by @me-no-dev in #8622
• fix(platform): use numbers in all recipe hooks (on 2.x) by @pillo79 in #9219
• Implement official Arduino IDE debugger API on 2.x by @pillo79 in #9118

Documentations

• Added isKey documentation for the Preferences library by @Viproz in #9142

Full Changelog: 2.0.14...2.0.15

New Contributors

• @audiophyl made their first contribution in #8886
• @SwapnilPande made their first contribution in #9269
• @kiran-desilva made their first contribution in #9344

Thanks for your contribution! 🎉

Contributors

• @pillo79
• @audiophyl
• @nathannau
• @Viproz
• @mariopesch
• @SwapnilPande
• @me-no-dev
• @bkari02
• @Jason2866
• @kiran-desilva
• @SuGlider
• @P-R-O-C-H-Y
• @powerfeatherdev

The Arduino ESP32 pre-release version 3.0.0-aplha 3 is based on the ESP-IDF v5.1 (release notes) and is major release supporting new version of ESP-IDF 5.1. This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6.

ESP32-C2 support was added, for usage you need to build the libraries using ESP32 Arduino Lib builder.

Major changes

• Add ESP32-C2 support by @Jason2866 in #8881
• [I2S][SR] Add new I2S library and Sound Recognition support by @me-no-dev in #8714
• Zigbee protocol support by @P-R-O-C-H-Y in #8844
• Fixes Rainmaker to be a Managed Component by @SuGlider in #8842
• IDF release/v5.1 by @me-no-dev in #8865
• IDF release/v5.1 by @me-no-dev in #8943

Peripherals updates

UART

• UART: Change default Serial1/2 pins and move definition to header by @lucasssvaz in #8800
• Fixes uart attach/detach by @SuGlider in #8820
• Serial as a #define by @SuGlider in #8798
• HardwareSerial::end(bool) review + Baud Rate detection review and example by @SuGlider in #8762

I2S

• Makes MP3 header files public for I2S code by @SuGlider in #8868
• Add support for I2S Slot Mask by @me-no-dev in #8936
• I2S fix missing perimanSetBusDeinit() by @P-R-O-C-H-Y in #8782

I2C

• Fully guard I2C Slave in preparation for C2 support by @me-no-dev in #8882
• Add lock in Wire.cpp to protect concurrent i2c transactions performed by different tasks by @mircopz in #8127

ADC

• Fix ADC detach bus calibration handle error when not existing. by @P-R-O-C-H-Y in #8932

RMT

• Update RMT initialization code by @diplfranzhoepfinger in #8927
• RMT: Fix RMT TX interrupt level by @lucasssvaz in #8813

Other peripherals changes

• Neopixel fix by @SuGlider in #8845
• fix S3 cannot reset to bootrom with USB OTG due to new gpio deinit() by @hathach in #8880

Libraries updates

WiFi related

• WiFiSTA - allow using DHCP again after disconnecting static IP by @JAndrassy in #8848
• WiFiSTA - new status constant WL_STOPPED by @JAndrassy in #8849
• WiFi.BSSID and scan result BSSID with parameter as in WiFi libraries by Arduino by @JAndrassy in #8853
• WiFiSTA - method setDNS as in WiFi libraries by Arduino by @JAndrassy in #8854
• WiFiServer - deprecate available(), use accept() everywhere by @JAndrassy in #8860
• Added WiFi Bandwidth Setting Methods for AP and STA modes. by @gonzabrusco in #7619
• Add missing function getSocketOption by @rtpmsys in #7807

Bluetooth & BLE related

• Bluetooth-classic: release BLE memory when BT classic only is requested by @ferbar in #8051
• Added methods to remove service UUID from BLEAdvertising by @dpnebert in #8747
• Kernel panic when delete BLEClient object with descriptor characteristic by @chesterkwan in #8010
• Fixes BLEScanResults to be used by reference by @SuGlider in #8759
• BluetoothSerial: Fix SPP service mode by @lucasssvaz in #8806
• Fix linker failure when using BluetoothSerial on latest release with Arduino as Component. by @blackhack in #8784
• Increase BT SPP task priority by @SuGlider in #8859

USB

• Added KEY_SPACE to USBHIDKeyboard.h by @lbernstone in #8920
• Absolute mouse support (was #6331) by @tobozo in #8831
• Make USBHIDKeyboard work at boot by @RefactorFactory in #6964
• Add USB MIDI support to libraries/USB by @EleotleCram in #8166

Other libraries changes

• Fix linker failure when using SPIFFS or LittleFS with Arduino as component by @blackhack in #8768
• provide LittleFS feature grow_on_mount by @Jason2866 in #8769
• Supporting ETag http headers on static files by @mathertel in #7687
• feat: adding possibility to manually set MD5 checksum and authorization for HTTP update by @vlastahajek in #7629
• UpdateClass::setMD5 store expected md5 in lowercase by @P-R-O-C-H-Y in #8959

Other general changes

• Add platform specific flash speed to magicFlashChipSpeed by @TD-er in #8864
• Add 120Mhz cpu frequency option to setCpuFrequencyMhz() by @P-R-O-C-H-Y in #8956
• Remove unsupported DOUT and QOUT options by @lucasssvaz in #8805
• Fix compilation when NO_GLOBAL_SERIAL is defined. by @everslick in #8933
• Support relative paths in UNIX search PATH by @me-no-dev in #8938
• Fix Wire.setClock() causing assert by @me-no-dev in #8777
• Fix "fatal error: esp_partition.h: No such file or directory" by @Msq001 in #8787

Peripheral Manager improvements

• Extend bus types and structure for Peripheral Manager by @P-R-O-C-H-Y in #8888
• PeriMan: Improve log messages by @lucasssvaz in #8812
• fix: pin_remap: make periman APIs private and non-remapped by @pillo79 in #8940

Boards additions and updates

• Add new uPesy boards as variant by @uPesy in #8778
• Add the DFRobot Beetle ESP32C6 and the DFRobot FireBeetle2 ESP32C6 as two development boards by @wxzed in #8793
• Added entry for octal flash S3 by @lbernstone in #8660
• Add new UM TinyC6 board and re-ordered UM boards in boards.txt file. by @UnexpectedMaker in #8814
• Set M5Stack Core2 Flash Mode to QIO by @me-no-dev in #8937
• Update Adafruit boards by @hathach in #8897
• correct adafruit metro esp32s3 pins for rev B by @hathach in #8903
• Add support for ESP32-S3 PowerFeather by @powerfeatherdev in #8889
• Adds support for missing Olimex boards by @Stanimir-Petev in #8896
• add tinyuf2 partitions csv by @hathach in #8894
• Added arduino uno backward compatibility pins by @alexceltare2 in #8833
• Add senseBox MCU-S2 with ESP32S2 by @mariopesch in #8891
• Fix Heltec boards build.board to be uppercase by @P-R-O-C-H-Y in #8958
• Add support for the Arduino Nano ESP32 on 3.x branch by @pillo79 in #8909

Tools improvements

• [REDO] Update espota.py by @me-no-dev in #8797

Documentation & Examples

• [Docs] Add Migration guide + some API updates by @P-R-O-C-H-Y in #8716
• Removed YML file and changed the YAML file structure by @pedrominatel in #8785
• [Docs] Fixed the RTD theme and core version by @pedrominatel in #8794
• [Docs] Add ESP32C6 + ESP32H2 by @P-R-O-C-H-Y in #8799
• Fix of Readme by @VojtechBartoska in #8852
• Update/upgrade OTAWebUpdater.ino example by @lbernstone in #8839
• Update boards.rst by @VojtechBartoska in #8851
• Update warning note about PlatformIO related issues by @VojtechBartoska in #8866
• Added troubleshoot...

Contributors

• @pillo79
• @hathach
• @pedrominatel
• @egnor
• @EleotleCram
• @mathertel
• @blackhack
• @Stanimir-Petev
• @tobozo
• @everslick
• @gonzabrusco
• @UnexpectedMaker
• @TD-er
• @ferbar
• @dpnebert
• @chesterkwan
• @mariopesch
• @alexceltare2
• @JAndrassy
• @me-no-dev
• @lbernstone
• @Jason2866
• @Msq001
• @vlastahajek
• @wxzed
• @lucasssvaz
• @diplfranzhoepfinger
• @mircopz
• @uPesy
• @SuGlider
• @VojtechBartoska
• @P-R-O-C-H-Y
• @rtpmsys
• @RefactorFactory
• @powerfeatherdev

The Arduino ESP32 pre-release version 3.0.0-aplha 2 is based on the ESP-IDF v5.1 (release notes) and is major release supporting new version of ESP-IDF 5.1. This release introduce breaking changes and support for new SoCs, ESP32-H2 and ESP32-C6.

Major changes

• Fixes installation on ArduinoIDE 1.x and RV toolchain on Windows
• Update toolchains to use the tar.gz format for IDE1 compatibility by @me-no-dev in #8757
• Rename the RV32 toolchain on release to fit paths in GCC limit by @me-no-dev in #8750

Other changes

• Fix standalone component build and enable CI check for it by @me-no-dev in #8743
• Add the sketch folder as the first include search path by @me-no-dev in #8734
• IDF release/v5.1 by @me-no-dev in #8758

Boards additions and updates

• Add SparkFun ESP32-C6 Qwiic Pocket Development Board Variant by @sfe-SparkFro in #8754
• Fixed bug for LilyGo T-display on boards.txt by @thebear132 in #8744

Full Changelog: 3.0.0-alpha1...3.0.0-alpha2

New Contributors

• @thebear132 made their first contribution in #8744

Thanks for your contribution! 🎉

Contributors

• @me-no-dev
• @thebear132
• @sfe-SparkFro