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  Arduino Release v3.3.1 based on ESP-IDF v5.5.1 Stable

  petr.gadorek released this 2025-09-16 21:13:35 +00:00 | 649 commits to master since this release

  What's Changed

  System PR

  • IDF release/v5.5 by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/11773
  • IDF release/v5.5 by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/11815
  • IDF release/v5.5 by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/11847

  Chip Support

  • fix(esp32): float conversion warning in String::toFloat by @martinbudden in https://github.com/espressif/arduino-esp32/pull/11829
  • fix(esp32): Compiler warning - parameter byte in function EspClass::magicFlashChipSize shadows typedef uint8_t byte; by @martinbudden in https://github.com/espressif/arduino-esp32/pull/11827
  • fix(esp32): Compiler warning - loop variable a shadows previous instance of a in function i2c_slave_gpio_mode by @martinbudden in https://github.com/espressif/arduino-esp32/pull/11828

  Peripherals

  I2S

  • fix: Put valid category for ESP_I2S by @ozzloy in https://github.com/espressif/arduino-esp32/pull/11729

  LEDC

  • fix(ledc): Allow setting AnalogWrite frequency and resolution before calling analogWrite by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11756

  Touch

  • feat(touch): Support all touch versions in NG driver by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11643

  UART

  • feat(core): Add wait time before setup by @tanakamasayuki in https://github.com/espressif/arduino-esp32/pull/11367
  • feat(core) Update package json for mklittlefs 4.0.2 by @lbernstone in https://github.com/espressif/arduino-esp32/pull/11779
  • fix(uart): always applies the user selected UART Clock Source by @SuGlider in https://github.com/espressif/arduino-esp32/pull/11747
  • feat(rmt): adds new function to send specific number of loops by @SuGlider in https://github.com/espressif/arduino-esp32/pull/11748

  USB

  • fix(usbmidi): use channel in int16_t USB MIDI pitch bend by @Skyslycer in https://github.com/espressif/arduino-esp32/pull/11795
  • feat(usb): allow the MIDI constructor to define a device name by @SuGlider in https://github.com/espressif/arduino-esp32/pull/11720

  Libraries

  • feat(hash): Add hashing library and new algorithms by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11676

  Bluetooth & BLE

  • BLE: BLECharacteristic::setValue() cleanup and optimization by @Kolcha in https://github.com/espressif/arduino-esp32/pull/11751
  • fix(ble): Fix BLESecurity and add examples by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11681
  • refactor(ble): minor BLE library cleanup by @Kolcha in https://github.com/espressif/arduino-esp32/pull/11789
  • feat(simpleBLE): Add support for NimBLE by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11813
  • fix(BLE): Fix double callback and secure examples by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11812
  • feat(ble): Enable BLE for ESP32-P4 through esp-hosted by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11804

  Ethernet

  • feat(eth): Add support for LAN867X ETH PHY by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/11843

  ESP-NOW

  • fix: Use correct category for ESP_NOW by @ozzloy in https://github.com/espressif/arduino-esp32/pull/11746

  ESP-SR

  • feat(sr): Update ESP-SR to 2.x and enable it for ESP32-P4 by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/11785
  • fix(sr): Fix ESP-SR lib and example for v2.x by @me-no-dev in https://github.com/espressif/arduino-esp32/pull/11797

  FS

  • fix(cpp): Fixes for cpp code scanning alerts by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11704

  Network

  • refactor(http-client): Replace USE_SERIAL with direct Serial by @JakubAndrysek in https://github.com/espressif/arduino-esp32/pull/11786
  • fix(package_index): Use HTTPS URL for online help link by @pillo79 in https://github.com/espressif/arduino-esp32/pull/11790
  • feat(HTTPClient): add support for collecting all HTTP headers by @JakubAndrysek in https://github.com/espressif/arduino-esp32/pull/11768
  • Update HTTPUpdateServer.h to Fix SPIFFS Update error: Bad Size Given by @kapyaar in https://github.com/espressif/arduino-esp32/pull/11586

  OTA

  • Feat: OTA inhibit sleep by @Rippanda12 in https://github.com/espressif/arduino-esp32/pull/11836

  WebServer

  • feat(WebServer): Add support for JavaScript modules by @cosstab in https://github.com/espressif/arduino-esp32/pull/11782

  WiFi

  • Fix (WiFi): Do not steal scan results by @vlastahajek in https://github.com/espressif/arduino-esp32/pull/11838

  Zigbee

  • feat(zigbee): Update ESP-ZIGBEE-SDK to 1.6.6 by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11641
  • feat(zigbee): Update esp-zigbee-lib to 1.6.7 by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11772
  • fix(zigbee): Add lock in scanNetworks to avoid race condition by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11792
  • feat(zigbee): Add stop/start methods + add missing license headers by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11791
  • feat(zigbee): Add multistate endpoint support by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11609
  • feat(zigbee): Add Binary Output support by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11560
  • feat(zigbee): Add Write Response Handler + option to allow multi endpoint binding by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11817

  Boards Additions & Updates

  • Add senseBox Eye board by @PaulaScharf in https://github.com/espressif/arduino-esp32/pull/11608
  • change(partitions): Reorder No OTA TinyUF2 partition scheme to come first on 4MB boards by @tyeth in https://github.com/espressif/arduino-esp32/pull/11692
  • fix(esp32:m5stack_atoms3) : Update pins_arduino.h of variant m5stack_atoms3 with correct LED_BUILTIN value matching GPIO #35 by @brice-fr in https://github.com/espressif/arduino-esp32/pull/11689
  • variant lilyho_t3_s3_sx127x duplicates LORA_BUSY - deleting one of them by @mitra42 in https://github.com/espressif/arduino-esp32/pull/11678
  • feat(esp32): Added a new device(xiao esp32c5) by @AZKKXL in https://github.com/espressif/arduino-esp32/pull/11677
  • fix flash_size for denky32 by @GitNik1 in https://github.com/espressif/arduino-esp32/pull/11750
  • Add OTA to senseBox Eye board by @PaulaScharf in https://github.com/espressif/arduino-esp32/pull/11684
  • Added FoBE Quill ESP32S3 Mesh board support by @chihosin in https://github.com/espressif/arduino-esp32/pull/11698
  • feat: Add Twin AIoT Module support for ESP32-S3-N4R2 by @bekirr12 in https://github.com/espressif/arduino-esp32/pull/11755
  • docs: Fix link and formatting in core_compatibility.rst by @eMUQI in https://github.com/espressif/arduino-esp32/pull/11764
  • fix(pins_arduino): Fixes te mask for the Watchy Device pins by @SuGlider in https://github.com/espressif/arduino-esp32/pull/11738
  • Update tinyuf2 0.35 by @tyeth in https://github.com/espressif/arduino-esp32/pull/11631
  • Add 4D Systems' ESP32-P4 MIPI Display Modules by @cruzjuniel in https://github.com/espressif/arduino-esp32/pull/11819
  • feat(variants): Add variant for M5Tab5 by @lboue in https://github.com/espressif/arduino-esp32/pull/11832
  • feat(axiometa_pixie_m1): Add Axiometa PIXIE M1 by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11840
  • feat(board): add support for Silicognition ManT1S by @xorbit in https://github.com/espressif/arduino-esp32/pull/11848

  CI & testing

  • feat(codeql): Add CodeQL analysis for interpreted languages by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11662
  • feat(codeql): Add CPP analysis by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11682
  • ci(component): Move component compilation to a separate workflow by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11673
  • fix(component): Use external diag logs to avoid error by @P-R-O-C-H-Y in https://github.com/espressif/arduino-esp32/pull/11661
  • fix(actions): Add missing permissions for workflows by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11709
  • Add function to handle library installation from ci.json by @JakubAndrysek in https://github.com/espressif/arduino-esp32/pull/11766
  • ci(build): Improve dependency detection by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11770
  • ci(pre-commit): Add label if manual fixes are required by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11776
  • ci(component): Enable ESP32-C5 for component testing by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11794
  • fix(pre-commit): Make tagging work for forks by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11799
  • ci(pre-commit): Comment when fixes are needed by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11802
  • fix(ltoa): Use proper labs for long values and fix affected sketches detection by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11814

  Documentation

  • docs: Correct ADC default resolution statement for ESP32-S2 by @eMUQI in https://github.com/espressif/arduino-esp32/pull/11653
  • fix(docs): Correct list indentation for analogWrite parameter by @eMUQI in https://github.com/espressif/arduino-esp32/pull/11727
  • fix(docs): Updates SPI reference link in documentation by @eMUQI in https://github.com/espressif/arduino-esp32/pull/11753

  Tooling

  • change(esptool): Upgrade esptool to 5.0.2 by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11680
  • fix(python): Fixes for Python code scanning alerts by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11668
  • change(esptool): Upgrade to version 5.1.0 by @lucasssvaz in https://github.com/espressif/arduino-esp32/pull/11845

  Others

  • Allow calls to timer functions within ISR by @angelnu in https://github.com/espressif/arduino-esp32/pull/11629
  • feat(github): remove ESP32 forum from issue template by @Parsaabasi in https://github.com/espressif/arduino-esp32/pull/11639
  • feat(github): remove ESP32 forum from issue template by @Parsaabasi in https://github.com/espressif/arduino-esp32/pull/11639
  • feat(github): Update template type by @Parsaabasi in https://github.com/espressif/arduino-esp32/pull/11640
  • fix(github-template): indentation by @Parsaabasi in https://github.com/espressif/arduino-esp32/pull/11667
  • Add header check for esp_bt.h in esp32-hal-misc.c by @Jason2866 in https://github.com/espressif/arduino-esp32/pull/11793
  • feat(perimgr): add function to retrieve detaching CB by @SuGlider in https://github.com/espressif/arduino-esp32/pull/11700
  • Fix warnings with c++23 (gcc 15.1) by @Jason2866 in https://github.com/espressif/arduino-esp32/pull/11824

  New Contributors

  • @angelnu made their first contribution in https://github.com/espressif/arduino-esp32/pull/11629
  • @Parsaabasi made their first contribution in https://github.com/espressif/arduino-esp32/pull/11639
  • @ozzloy made their first contribution in https://github.com/espressif/arduino-esp32/pull/11729
  • @AZKKXL made their first contribution in https://github.com/espressif/arduino-esp32/pull/11677
  • @mitra42 made their first contribution in https://github.com/espressif/arduino-esp32/pull/11678
  • @brice-fr made their first contribution in https://github.com/espressif/arduino-esp32/pull/11689
  • @chihosin made their first contribution in https://github.com/espressif/arduino-esp32/pull/11698
  • @bekirr12 made their first contribution in https://github.com/espressif/arduino-esp32/pull/11755
  • @Kolcha made their first contribution in https://github.com/espressif/arduino-esp32/pull/11751
  • @cosstab made their first contribution in https://github.com/espressif/arduino-esp32/pull/11782
  • @Skyslycer made their first contribution in https://github.com/espressif/arduino-esp32/pull/11795
  • @cruzjuniel made their first contribution in https://github.com/espressif/arduino-esp32/pull/11819
  • @martinbudden made their first contribution in https://github.com/espressif/arduino-esp32/pull/11829
  • @Rippanda12 made their first contribution in https://github.com/espressif/arduino-esp32/pull/11836
  • @kapyaar made their first contribution in https://github.com/espressif/arduino-esp32/pull/11586

  Full Changelog: https://github.com/espressif/arduino-esp32/compare/3.3.0...3.3.1

  Downloads

  • esp32-3.3.1.zip
    0 downloads · 2026-07-17 18:46:06 +00:00 · 26 MiB
  • package_esp32_dev_index.json
    0 downloads · 2026-07-17 18:46:08 +00:00 · 413 KiB
  • package_esp32_dev_index_cn.json
    0 downloads · 2026-07-17 18:46:10 +00:00 · 428 KiB
  • package_esp32_index.json
    0 downloads · 2026-07-17 18:46:12 +00:00 · 341 KiB
  • package_esp32_index_cn.json
    0 downloads · 2026-07-17 18:46:13 +00:00 · 353 KiB