Arduino ESP32 Version 2.0.5

The Arduino ESP32 version 2.0.5 based on the ESP-IDF v4.4.2 introduces bug fixes, improvements and new boards support.

Changes

Here is a summary of the major changes.

• ESP-IDF upgrade to v4.4.2

Improvements

• Update esptool to version 4.2.1
• Update get.py to support python 3.10+
• ESP-IDF v4.4.2 and build time elf2bin for the bootloaders
• Changes UART ISR to only trigger on RX FIFO Full and timeout
• Adds noInterrupt() and interrupt() functionality
• Update PlatformIO build scripts
• Get real Flash Chip Size via API call
• Add default SPI pin definitions if not defined in pins_arduino.h
• Add new ULP example for ESP32
• Adds an error message to HardwareSerial::setPins()
• Improve RGB driver
• Adds Wire::setBufferSize function
• Adds default Wire1 pins auto-setup
• Add erase flash option to Arduino IDE menu
• Improves time for setting touch interrupt

Bugfixes

• Fixed instances where qspi has been renamed to qio in boards.txt
• CameraWebServer example fix
• Fixes Arduino Wire::begin overload
• Fixes LwIP INADDR_NONE conflict with softAPConfig()
• Fixes HardwareSerial::availableForWrite + setTxBufferSize
• LEDC 1-bit mode duty fix
• Fix partition names in board.txt
• FIX: Added erase flash menu to all boards
• Fixed CHANNEL in ESPNow example
• Fixes Cookie Case Sensitivity

New Boards & updates

• Add the new MiniMain ESP32-S2 board
• Add SparkFun IoT RedBoard
• Add lolin s3 board def
• Added Smart Bee Design Boards
• Add support for new unphone boards
• Add boards WiFiduinoV2&WiFiduino32S3
• Add newly board (Deneyap Kart G)
• [NINA-W1] more build menu options
• [NORA-W1] Fix SPI pin assignments to match Arduino pinout
• Add new variant ESP32 Thing Plus C. Update boards file
• Update Adafruit boards
• Create M5Station pins_arduino.h and M5Station Board
• Itsy bitsy esp32 board working
• TTGO T-OI-Plus: pins LED_BUILTIN & BAT_ADC_PIN

Documentation

• Docs: add FAQ entry about modifying sdkconfig options
• Doc addition: How to compile libs with different debug level

See all bug fixes in the complete changelog below.

What's Changed

See the complete changelog down below:

• Add 2.0.4 version to Issue report template by @P-R-O-C-H-Y in #6985
• Added dont_mount option to LittleFS conf initialization by @econeale in #6953
• tests: Add options. by @Ouss4 in #6916
• CameraWebServer example fix by @PilnyTomas in #6993
• Improve RGB driver in pull #6808; solves #6968 by @santaimpersonator in #6979
• Fixed instances where qspi has been renamed to qio in boards.txt by @lbernstone in #6962
• Allow access to the PWM channel assigned to the Pin. Opportunity to change PWM configurations by @VasilyRakche in #6992
• Added keywords.txt with RGB_BUILTIN into libraries/ESP32 by @PilnyTomas in #7015
• Added #include into BLEAdvertisedDevice.h by @PilnyTomas in #6990
• docs: add FAQ entry about modifying sdkconfig options by @igrr in #7036
• Fixes Arduino Wire::begin overload by @SuGlider in #7000
• Add the new MiniMain ESP32-S2 board created by Department of Alchemy. by @cubeinhabitant in #6963
• Add TXD2 and RXD2 pin definitions by @Tinyu-Zhao in #6989
• [NINA-W1] more build menu options by @mazgch in #7008
• Add new variant ESP32 Thing Plus C. Update boards file. by @SFE-Brudnerd in #7038
• Adds an error message to HardwareSerial::setPins() by @SuGlider in #7040
• [WIFI] ifdef check should match log_x function call by @mazgch in #7004
• added http code param to WebServer.streamFile (#6899) by @r-downing in #6995
• ./.github/scripts: Restore the build directory by @Ouss4 in #7037
• update Adafruit boards by @hathach in #7025
• Update WiFiGeneric.cpp by @zhangyanjiaoesp in #7044
• Adds Wire::setBufferSize function by @SuGlider in #7016
• WiFiClientSecure: Fix warning about missing PSK-based ciphersuites by @kohlschuetter in #7020
• Adds default Wire1 pins auto-setup by @SuGlider in #7034
• Fixes LwIP INADDR_NONE conflict with softAPConfig() by @SuGlider in #7059
• IDF release/v4.4 by @me-no-dev in #6994
• Fixes HardwareSerial::availableForWrite + setTxBufferSize by @SuGlider in #6998
• Add SparkFun IoT RedBoard by @sfe-SparkFro in #7085
• Changed Neopixel related static constants to #defines by @ChuckVanzant in #7080
• add lolin s3 board def by @wemos in #7094
• LEDC 1-bit mode duty fix. by @P-R-O-C-H-Y in #7079
• Added Smart Bee Design Boards by @strid3r21 in #7093
• Add full setsocketoption to WifiClient and WifiClientSecure by @20162026 in #7030
• Add erase flash option to Arduino IDE menu by @PilnyTomas in #7043
• Add support for new unphone boards by @garethhcoleman in #7058
• UpdateClass - speedup flash erase/writes by @vortigont in #7002
• Add support for new unphone boards by @garethhcoleman in #7109
• Improves time for setting touch interrupt by @SuGlider in #7099
• WebServer: rename & expose internal 'contentLength' variable for POST... by @WebDust21 in #7012
• Added NVS test sketch + test script by @P-R-O-C-H-Y in #6885
• Create M5Station pins_arduino.h and M5Station Board by @Tinyu-Zhao in #7101
• Fix partition names in board.txt by @P-R-O-C-H-Y in #7120
• FIX: Added erase flash menu to all boards by @P-R-O-C-H-Y in #7129
• Fixed CHANNEL in ESPNow example by @PilnyTomas in #7104
• Fixes Cookie Case Sensitivity by @SuGlider in #7112
• Enable configuring target variants by @kohlschuetter in #7019
• Update .gitignore by @kohlschuetter in #7021
• Update esptool to version 4.2.1 by @me-no-dev in #7127
• Update get.py to support python 3.10+ by @me-no-dev in #7166
• fixed names on the VID and PID for my boards in boards.txt by @strid3r21 in #7144
• Compile error if CONFIG_FREERTOS_HZ != 1000 by @egnor in #6955
• Adding u-blox NORA-W10 series (ESP32-S3) by @mazgch in #7191
• Fixed switch rename issue in examples espressif/esp-rainmaker#152 by @sanketwadekar in #7171
• Update PlatformIO build scripts by @valeros in #7200
• itsy bitsy esp32 board working :) by @ladyada in #7199
• add TAMC Termod S3 board variant by @TAMCTec in #7217
• [NORA-W1] Fix SPI pin assignments to match Arduino pinout. by @mazgch in #7208
• Get real Flash Chip Size via API call by @Jason2866 in #7159
• TTGO T-OI-Plus: pins LED_BUILTIN & BAT_ADC_PIN by @FedericoBusero in #7241
• Fixed the ability to change CHANNEL by @PilnyTomas in #7154
• Add default SPI pin definitions if not defined in pins_arduino.h by @P-R-O-C-H-Y in #7161
• USBHIDKeyboard: Fix 200ms delay for every key by @RefactorFactory in #7218
• Updated warning message displayed when building as IDF component by @PilnyTomas in #7220
• Add new ULP example for ESP32 by @SuGlider in #7221
• add flash frequency to patched firmware by @Jason2866 in #7230
• Get correct (real) Flash mode via API by @Jason2866 in #7239
• Fixed issue of device crashing in R...

Contributors

• @hathach
• @egnor
• @kohlschuetter
• @valeros
• @ladyada
• @cubeinhabitant
• @shutup
• @igrr
• @mazgch
• @wemos
• @Ouss4
• @me-no-dev
• @ChuckVanzant
• @WebDust21
• @i3water
• @lbernstone
• @Jason2866
• @vortigont
• @r-downing
• @VasilyRakche
• @zhangyanjiaoesp
• @garethhcoleman
• @PilnyTomas
• @FedericoBusero
• @santaimpersonator
• @20162026
• @mrengineer7777
• @Tinyu-Zhao
• @strid3r21
• @SuGlider
• @sanketwadekar
• @zeynepdicle
• @econeale
• @P-R-O-C-H-Y
• @TAMCTec
• @SFE-Brudnerd
• @sfe-SparkFro
• @RefactorFactory

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

New Contributors

A special thank you to all new contributors!

• @kumekay made their first contribution in #6688
• @smarq8 made their first contribution in #6425
• @0hotpotman0 made their first contribution in #6702
• @h-actsafe made their first contribution in #6728
• @sweetlilmre made their first contribution in #6763
• @sonictl made their first contribution in #6774
• @ma-lalonde made their...

Contributors

• @kumekay
• @earlephilhower
• @sweetlilmre
• @hathach
• @pedrominatel
• @ankostis
• @valeros
• @ladyada
• @sivar2311
• @gonzabrusco
• @smarq8
• @mazgch
• @Rotzbua
• @Ouss4
• @me-no-dev
• @patricklaf
• @jerry-jho
• @sonictl
• @MaxwellAlan
• @lbernstone
• @maxgerhardt
• @wxzed
• @PilnyTomas
• @Anx2k
• @Luuccc
• @mrengineer7777
• @0hotpotman0
• @ma-lalonde
• @SuGlider
• @hepr-skylotec
• @P-R-O-C-H-Y

Arduino ESP32 Version 2.0.3

The Arduino ESP32 version 2.0.3 based on the ESP-IDF v4.4 introduces the support for the ESP32-S3, new boards support, new APIs and refactoring improvements, and bug fixes.

About the ESP32-S3

Announced by Espressif in 2020, the ESP32-S3 is a dual-core XTensa LX7 MCU, capable of running at 240 MHz, 512 KB of internal SRAM, integrated 2.4 GHz, 802.11 b/g/n Wi-Fi and Bluetooth 5 (LE) connectivity, 45 programmable GPIOs and supports a rich set of peripherals.

To know more about the ESP32-S3, see the product page here.

Changes

Here is a summary of the major changes.

New Peripherals Support and Refactoring (ESP-IDF APIs based)

• ESP32-S3 support added
• Added ESP-SR support
• GPIO
• Touch

Improvements

• ESP-IDF release/v4.4
• Toolchain updated to gcc8_4_0-esp-2021r2-patch3
• New boards support was added
• New documentation chapters added
• Added support for the Dual-Antenna and ESP32-WROOM-DA
• RainMaker support for ESP32-S2, ESP32-S3, and ESP32-C3
• Update IDF libs and mbedtls options
• CI improvements
• KSZ8041 support
• Add cookie support on HttpClient
• New documentation chapters and tutorial

Bugfixes

• Fix bootloop issue and enable DSP optimization
• Fixes on UART
• Fix Ethernet clock runtime setting
• Fixes on LEDC
• Fix SD mount issue
• Fixed String(float) issue
• Fixed UART MODBUS and Loopback issue
• Fixed interrupts in LEDC
• Fixed SD mount issue and check status
• Fixes on USB CDC

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:

• Fixes String(float) issue with Stack Smashing by @SuGlider in #6138
• Allows user to bypass PSRAM test and boot faster with WROVER by @SuGlider in #6135
• Fixes UART MODBUS and Loopback issue by @SuGlider in #6133
• Adds UART RX IRQ Callback with onReceive() by @SuGlider in #6134
• NTP Examples: revert obsolete comment and updated Time example by @vortigont in #6073
• Add variantInit setups for adafruit boards by @ladyada in #6076
• Print.flush() - Arduino API conformance by @JAndrassy in #6084
• Add KSZ8041 support by @Darek7D in #6087
• BUGFIX - Sd check status by @P-R-O-C-H-Y in #6103
• Versions and feature Request Template updates by @VojtechBartoska in #6096
• Fix I2C Slave Compile by @mrengineer7777 in #6108
• Consistently change device index to singed integer in BluetoothSerial lib by @iltis42 in #6109
• WIFI STA AutoReconnect fix for assocfail reason, Proposed fix for #2501 by @tablatronix in #6113
• Add Core Debug Level option to Tools menu for all boards in boards.txt by @gcweeks in #6110
• ci: Miscellaneous improvements by @Ouss4 in #6132
• IDF release/v4.4 by @me-no-dev in #6075
• Implement Ticker::active() by @everslick in #6148
• Add LionBit Dev Board. by @niwantha33 in #6151
• Add certificate bundle capability to WiFiClientSecure by @esp32wrangler in #6106
• Rename file pins_Arduino.h to pins_arduino.h by @P-R-O-C-H-Y in #6153
• Fix variant definition for w32-eth01 by @me-no-dev in #6159
• Fixing interrupts in LEDC by @P-R-O-C-H-Y in #6160
• Add Watchy board by @sqfmi in #6158
• .github/scripts: Fix indentation and trailing spaces. by @Ouss4 in #6157
• Fixes UART1 and UART2 default pins for ESP32-S3 by @SuGlider in #6202
• Fix - SD mount issue by @P-R-O-C-H-Y in #6162
• [SSL] fix: restoring handshake timeout by @vlastahajek in #6166
• Use 8.4.0+2021r2-patch2 toolchains for CI by @Jason2866 in #6184
• Fixes onReceive deadlock by @SuGlider in #6201
• added explanatory comments to WebServer.h by @h-enes-simsek in #6204
• Add conditional include to WiFiProv.h by @mrengineer7777 in #6192
• Resolve WString TODO by @mrengineer7777 in #6190
• Allow HTTPCLIENT_1_1_COMPATIBLE to be disabled by @everslick in #6200
• Update RequestHandlersImpl.h to enable serveStatic on folders with LittleFS. by @mathertel in #6179
• Refactor the CI scripts by @Ouss4 in #6191
• Fix random CaptivePortal.ino crashes by @im-pro-at in #6206
• Docs cleanup and version updated to 2.0.2 by @pedrominatel in #6213
• Unnecessary operation removed from map() in WMath.cpp by @IanSC in #6218
• Update of CameraWebServer example by @renebohne in #6219
• Touch Sensor IDF Refactoring by @SuGlider in #6194
• Fix String.replace() broken by #6190 by @s-hadinger in #6224
• Add Github action for uploading arduino-esp32 component. by @magicarm22 in #6203
• add feather esp32 v2 and qtpy c3 board def by @ladyada in #6223
• Added dual antenna for WiFi (based on the ESP32-WROOM-DA module) by @pedrominatel in #6226
• Remove pinMode in ledc for ESP32C3 by @P-R-O-C-H-Y in #6229
• Fixes Touch Sensor for ESP32-S3 and any future SoC by @SuGlider in #6234
• HttpClient: Add cookie support (cookie jar) by @mattsches1 in #6216
• Support the updated MbedTLS in ESP-IDF v4.4 by @me-no-dev in #6243
• Fix compile with Arduino lib builder by @Jason2866 in #6244
• Fix CDC+JTAG is disabled when WiFi is used on ESP32-C3 by @me-no-dev in #6287
• Fix Check for _cookieJar in HTTPClient (#6266) by @bbsan2k in #6280
• Installing.rst_update by @VojtechBartoska in #6292
• Fixes softAPConfig() return by @SuGlider in #6294
• Adds BLE examples to ESP32-C3 CI cycle by @SuGlider in #6285
• Add Ethernet to CMakeLists by @copercini in #6261
• GPIO refactoring by @P-R-O-C-H-Y in #6259
• Added documentation for the Arduino IDE tools menu by @pedrominatel in #6284
• ADC esp32s2 attenuation fix for DAC pins by @P-R-O-C-H-Y in #6282
• Fixes UART pin setting + adds CTS/RTS HW Flow Control by @SuGlider in #6272
• fixed http.end taking too long by @yigitabi5444 in #6277
• add lolin c3 mini board def by @wemos in #6306
• (boards.txt) Add partition scheme menu for AI Thinker ESP-CAM boards by @Hacker-3000 in #6310
• The M5Core2 and M5Tough have 40 pins by @pgrawehr in #6315
• add lolin s2 mini board def by @wemos in #6320
• Make USBHIDKeyboard::sendReport() public by @tobozo in #6322
• Update doc: Arduino as IDF component; fixes #5833 by @PilnyTomas in #6299
• Added ADC API doc + simple example by @P-R-O-C-H-Y in #6301
• [Docs] Added more details about embedded FLASH and PSRAM on ESP32-S3. by @pedrominatel in #6321
• LEDC & SigmaDelta documentation by @P-R-O-C-H-Y in #6330
• [Docs] Timer API documentation by @P-R-O-C-H-Y in #6335
• [Docs] DAC API documentation by @P-R-O-C-H-Y in ht...

Contributors

• @pedrominatel
• @ankostis
• @gcweeks
• @renebohne
• @jpswensen
• @tablatronix
• @valeros
• @mathertel
• @ladyada
• @tobozo
• @everslick
• @bbsan2k
• @DeuxVis
• @gonzabrusco
• @smuellener
• @UnexpectedMaker
• @nimaltd
• @niwantha33
• @igrr
• @BrianRossmajer
• @booptech
• @rtu-dataframe
• @im-pro-at
• @ferbar
• @PaulZC
• @Darek7D
• @IanSC
• @BlueAndi
• @cyberman54
• @wemos
• @JAndrassy
• @garubi
• @Ouss4
• @me-no-dev
• @tomorrow56
• @pgrawehr
• @yigitabi5444
• @dok-net
• @copercini
• @Jason2866
• @vortigont
• @maxgerhardt
• @magicarm22
• @sqfmi
• @H3wastooshort
• @vlastahajek
• @iltis42
• @PilnyTomas
• @GitNik1
• @mrengineer7777
• @esp32wrangler
• @s-hadinger
• @dreamcmi
• @h-enes-simsek
• @SuGlider
• @zeynepdicle
• @VojtechBartoska
• @Xylopyrographer
• @P-R-O-C-H-Y
• @mattsches1

Arduino ESP32 Version 2.0.3-RC1

The Arduino ESP32 version 2.0.3 based on the ESP-IDF v4.4 introduces the support for the ESP32-S3, new boards support, new APIs and refactoring, improvements, and bug fixes.

About the ESP32-S3

Announced by Espressif in 2020, the ESP32-S3 is a dual-core XTensa LX7 MCU, capable of running at 240 MHz, 512 KB of internal SRAM, integrated 2.4 GHz, 802.11 b/g/n Wi-Fi and Bluetooth 5 (LE) connectivity, 45 programmable GPIOs and supports a rich set of peripherals.

To know more about the ESP32-S3, see the product page here.

Changes

Here is a summary of the major changes.

New Peripherals Support and Refactoring (ESP-IDF APIs based)

• ESP32-S3 support added
• Added ESP-SR support
• GPIO
• Touch

Improvements

• ESP-IDF release/v4.4
• Toolchain updated to gcc8_4_0-esp-2021r2-patch3
• New boards support was added
• New documentation chapters added
• Added support for the Dual-Antenna and ESP32-WROOM-DA
• RainMaker support for ESP32-S2, ESP32-S3, and ESP32-C3
• Update IDF libs and mbedtls options
• CI improvements
• KSZ8041 support
• Add cookie support on HttpClient
• New documentation chapters and tutorial

Bugfixes

• Fix bootloop issue and enable DSP optimization
• Fixes on UART
• Fix Ethernet clock runtime setting
• Fixes on LEDC
• Fix SD mount issue
• Fixed String(float) issue
• Fixed UART MODBUS and Loopback issue
• Fixed interrupts in LEDC
• Fixed SD mount issue

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:

• Fixes String(float) issue with Stack Smashing by @SuGlider in #6138
• Allows user to bypass PSRAM test and boot faster with WROVER by @SuGlider in #6135
• Fixes UART MODBUS and Loopback issue by @SuGlider in #6133
• Adds UART RX IRQ Callback with onReceive() by @SuGlider in #6134
• NTP Examples: revert obsolete comment and updated Time example by @vortigont in #6073
• Add variantInit setups for adafruit boards by @ladyada in #6076
• Print.flush() - Arduino API conformance by @JAndrassy in #6084
• Add KSZ8041 support by @Darek7D in #6087
• BUGFIX - Sd check status by @P-R-O-C-H-Y in #6103
• Versions and feature Request Template updates by @VojtechBartoska in #6096
• Fix I2C Slave Compile by @mrengineer7777 in #6108
• Consistently change device index to singed integer in BluetoothSerial lib by @iltis42 in #6109
• WIFI STA AutoReconnect fix for assocfail reason, Proposed fix for #2501 by @tablatronix in #6113
• Add Core Debug Level option to Tools menu for all boards in boards.txt by @gcweeks in #6110
• ci: Miscellaneous improvements by @Ouss4 in #6132
• IDF release/v4.4 by @me-no-dev in #6075
• Implement Ticker::active() by @everslick in #6148
• Add LionBit Dev Board. by @niwantha33 in #6151
• Add certificate bundle capability to WiFiClientSecure by @esp32wrangler in #6106
• Rename file pins_Arduino.h to pins_arduino.h by @P-R-O-C-H-Y in #6153
• Fix variant definition for w32-eth01 by @me-no-dev in #6159
• Fixing interrupts in LEDC by @P-R-O-C-H-Y in #6160
• Add Watchy board by @sqfmi in #6158
• .github/scripts: Fix indentation and trailing spaces. by @Ouss4 in #6157
• Fixes UART1 and UART2 default pins for ESP32-S3 by @SuGlider in #6202
• Fix - SD mount issue by @P-R-O-C-H-Y in #6162
• [SSL] fix: restoring handshake timeout by @vlastahajek in #6166
• Use 8.4.0+2021r2-patch2 toolchains for CI by @Jason2866 in #6184
• Fixes onReceive deadlock by @SuGlider in #6201
• added explanatory comments to WebServer.h by @h-enes-simsek in #6204
• Add conditional include to WiFiProv.h by @mrengineer7777 in #6192
• Resolve WString TODO by @mrengineer7777 in #6190
• Allow HTTPCLIENT_1_1_COMPATIBLE to be disabled by @everslick in #6200
• Update RequestHandlersImpl.h to enable serveStatic on folders with LittleFS. by @mathertel in #6179
• Refactor the CI scripts by @Ouss4 in #6191
• Fix random CaptivePortal.ino crashes by @im-pro-at in #6206
• Docs cleanup and version updated to 2.0.2 by @pedrominatel in #6213
• Unnecessary operation removed from map() in WMath.cpp by @IanSC in #6218
• Update of CameraWebServer example by @renebohne in #6219
• Touch Sensor IDF Refactoring by @SuGlider in #6194
• Fix String.replace() broken by #6190 by @s-hadinger in #6224
• Add Github action for uploading arduino-esp32 component. by @magicarm22 in #6203
• add feather esp32 v2 and qtpy c3 board def by @ladyada in #6223
• Added dual antenna for WiFi (based on the ESP32-WROOM-DA module) by @pedrominatel in #6226
• Remove pinMode in ledc for ESP32C3 by @P-R-O-C-H-Y in #6229
• Fixes Touch Sensor for ESP32-S3 and any future SoC by @SuGlider in #6234
• HttpClient: Add cookie support (cookie jar) by @mattsches1 in #6216
• Support the updated MbedTLS in ESP-IDF v4.4 by @me-no-dev in #6243
• Fix compile with Arduino lib builder by @Jason2866 in #6244
• Fix CDC+JTAG is disabled when WiFi is used on ESP32-C3 by @me-no-dev in #6287
• Fix Check for _cookieJar in HTTPClient (#6266) by @bbsan2k in #6280
• Installing.rst_update by @VojtechBartoska in #6292
• Fixes softAPConfig() return by @SuGlider in #6294
• Adds BLE examples to ESP32-C3 CI cycle by @SuGlider in #6285
• Add Ethernet to CMakeLists by @copercini in #6261
• GPIO refactoring by @P-R-O-C-H-Y in #6259
• Added documentation for the Arduino IDE tools menu by @pedrominatel in #6284
• ADC esp32s2 attenuation fix for DAC pins by @P-R-O-C-H-Y in #6282
• Fixes UART pin setting + adds CTS/RTS HW Flow Control by @SuGlider in #6272
• fixed http.end taking too long by @yigitabi5444 in #6277
• add lolin c3 mini board def by @wemos in #6306
• (boards.txt) Add partition scheme menu for AI Thinker ESP-CAM boards by @Hacker-3000 in #6310
• The M5Core2 and M5Tough have 40 pins by @pgrawehr in #6315
• add lolin s2 mini board def by @wemos in #6320
• Make USBHIDKeyboard::sendReport() public by @tobozo in #6322
• Update doc: Arduino as IDF component; fixes #5833 by @PilnyTomas in #6299
• Added ADC API doc + simple example by @P-R-O-C-H-Y in #6301
• [Docs] Added more details about embedded FLASH and PSRAM on ESP32-S3. by @pedrominatel in #6321
• LEDC & SigmaDelta documentation by @P-R-O-C-H-Y in #6330
• [Docs] Timer API documentation by @P-R-O-C-H-Y in #6335
• [Docs] DAC API documentation by @P-R-O-C-H-Y in https://github.com/espressif/ardui...

Contributors

• @pedrominatel
• @gcweeks
• @renebohne
• @jpswensen
• @tablatronix
• @mathertel
• @ladyada
• @tobozo
• @everslick
• @bbsan2k
• @gonzabrusco
• @smuellener
• @niwantha33
• @im-pro-at
• @Darek7D
• @IanSC
• @BlueAndi
• @cyberman54
• @wemos
• @JAndrassy
• @garubi
• @Ouss4
• @me-no-dev
• @tomorrow56
• @pgrawehr
• @yigitabi5444
• @copercini
• @Jason2866
• @vortigont
• @maxgerhardt
• @magicarm22
• @sqfmi
• @H3wastooshort
• @vlastahajek
• @iltis42
• @PilnyTomas
• @mrengineer7777
• @esp32wrangler
• @s-hadinger
• @h-enes-simsek
• @SuGlider
• @zeynepdicle
• @VojtechBartoska
• @Xylopyrographer
• @P-R-O-C-H-Y
• @mattsches1

The Arduino ESP32 version 2.0.2 based on the ESP-IDF v4.4-beta1 includes mainly peripheral APIs refactoring, improvements and bug fixes.

Here is a summary of the major changes.

Peripherals refactored to use ESP-IDF APIs:

• Timer
• LedC
• DAC
• RMT
• SigmaDelta

Improvements:

• Boards added and some updated (TTGO-LoRa32, Adafruit boards, DPU ESP32...)
• Added Sonoff DUALR3 support with RainMaker example
• GPIO defines for C3 added
• Github CLI workflow updates
• Added support to change LoopTask Stack size
• New Documentation added (USB, GPIO, Arduino as component)

Bugfixes:

• I2C Clock stretching
• SD card status check
• Baudrate with CPU Freq < 80MHz
• SetCpuFrequencyMhz() changes Serial bauds if frequency<80Mhz
• Lib Builder compiling errors
• WiFiSecureClient memory leaks when SSL/TLS connection fails
• Change default WiFi STA encryption to WIFI_AUTH_WPA2_PSK
• Forces UART Flush() to wait until all bits are sent

See all bug fixes in the complete changelog below.

What's Changed

See the complete changelog down below:

• Fix compiler.libraries.ldflags Option by @tanakamasayuki in #5866
• [Docs] Add link to supported soc list on README and ESP32-S3 datasheet by @pedrominatel in #5891
• Fix compilation error of Deneyap Mini Board by @zeynepdicle in #5903
• cbuf: allow inheritance by @FrankBoesing in #5883
• Fix I2C clock stretching issue with ESP32 by @me-no-dev in #5910
• IDF release/v4.4 by @me-no-dev in #5911
• [DOCS] Editing usage of Arduino as a component in ESP-IDF by @P-R-O-C-H-Y in #5896
• [Docs] Update on the Windows install procedures by @pedrominatel in #6018
• Update boards.txt for Adafruit Feather ESP32-S2 by @hathach in #6006
• SD Card status check fix by @P-R-O-C-H-Y in #5988
• Delete .travis.yml file. by @Ouss4 in #5987
• Correct the execute bit of some files. by @Ouss4 in #5986
• .github/workflows: Update checkout and setup-python actions to their V2 version. by @Ouss4 in #5985
• Update Boards.txt by @woodif in #5984
• Prevent self hosted jobs to run on forks. by @Ouss4 in #5983
• [Feature] Added Sonoff DUALR3 support with RainMaker example by @pedrominatel in #5980
• Merged all TTGO-LoRa32 Board profiles (see #5933) by @tobozo in #5961
• Use WIFI_FAST_SCAN if a specific channel was used by @obaterspok in #5975
• Don't clear custom HTTP headers on redirect in HTTPClient by @wojtekka in #5973
• add board variant for WT32-ETH01 (wt32-eth01) from Wireless-Tag by @mondbaron in #5946
• [DOCS] Writing a new Arduino documentation about GPIO by @halyssonJr in #5894
• Implement Timer based on ESP-IDF API by @P-R-O-C-H-Y in #5931
• MD5Builder update for esp_rom API usage by @atanisoft in #5941
• Add DPU ESP32 variant by @TAMCTec in #5884
• Fix for BluetoothSerial build when using nimBLE instead of Bluedroid by @JakubRybakowski in #5920
• Fix WiFiSecureClient memory leaks when SSL/TLS connection fails by @ppescher in #5945
• Adding Issue and Feature template by @VojtechBartoska in #5999
• using ksz8081 only from ESP-IDF 4.4 onwards by @vitorrussi in #5918
• Refactoring TwoWire::requestFrom() headers in Wire.cpp by @Maelstrom96 in #5935
• IDF release/v4.4 by @me-no-dev in #5996
• Add some more adafruit boards and fix some board typos by @ladyada in #6014
• Change default WiFi STA encryption to WIFI_AUTH_WPA2_PSK by @me-no-dev in #6022
• Implement DAC based on ESP-IDF API by @P-R-O-C-H-Y in #5959
• Forces UART Flush() to wait until all bits are sent by @SuGlider in #6026
• Adds support to change LoopTask Stack size by @SuGlider in #6025
• [Fix] Added the Win32 not supported notice/warning by @pedrominatel in #6031
• fix variant wt32-eth01 (initializer not constant) by @mondbaron in #6040
• HID_BRAILLE_DISPLAY by @discapacidad5 in #6043
• Implement LEDC based on ESP-IDF API by @P-R-O-C-H-Y in #6045
• Fixes baudrate with CPU Freq < 80MHz by @SuGlider in #6037
• [Docs] Added USB documentation by @pedrominatel in #6036
• [Examples] README revision to include missing and remove old entries by @pedrominatel in #6049
• RMT refactoring based on IDF by @SuGlider in #6024
• IDF release/v4.4 by @me-no-dev in #6048
• Update pinout for two adafruit boards by @ladyada in #6050
• add GPIO defines for C3 by @NiklasVoigt in #6005
• Fixes Lib Builder compiling errors by @SuGlider in #6052
• Implement SigmaDelta based on ESP-IDF API by @P-R-O-C-H-Y in #6053

New Contributors

A special thank you to all new contributors!

• @Ouss4 made their first contribution in #5987
• @obaterspok made their first contribution in #5975
• @wojtekka made their first contribution in #5973
• @mondbaron made their first contribution in #5946
• @halyssonJr made their first contribution in #5894
• @TAMCTec made their first contribution in #5884
• @JakubRybakowski made their first contribution in #5920
• @vitorrussi made their first contribution in #5918
• @Maelstrom96 made their first contribution in #5935
• @discapacidad5 made their first contribution in #6043
• @NiklasVoigt made their first contribution in #6005

Full Changelog: 2.0.1...2.0.2

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

Contributors

• @hathach
• @pedrominatel
• @ladyada
• @wojtekka
• @tobozo
• @FrankBoesing
• @obaterspok
• @mondbaron
• @atanisoft
• @woodif
• @ppescher
• @discapacidad5
• @Maelstrom96
• @tanakamasayuki
• @Ouss4
• @me-no-dev
• @JakubRybakowski
• @NiklasVoigt
• @vitorrussi
• @halyssonJr
• @SuGlider
• @zeynepdicle
• @VojtechBartoska
• @P-R-O-C-H-Y
• @TAMCTec

The Arduino ESP32 version 2.0.1, based on the master ESP-IDF development branch, is out. This new version adds new functionalities, improvements, and bug fixes.

Here is a summary of the major changes and new features added.

On peripherals:

• Serial now uses ESP-IDF API
• Wire now uses ESP-IDF API and works on all supported chips
• Wire-Slave is now implemented
• analogWrite basic support based on LEDC

Improvements:

• Smaller memory footprint (smaller than even v1.0.6)
• Improved USB-CDC support for both ESP32-S2 and ESP32-C3
• Added more information on the docs, including the blink tutorial
• Added the I2C library documentation
• Minor improvements on SPI, SD/MMC, SSL, etc
• Added ALPN support

Bugfixes:

• Several boards definitions are fixed (boards.txt).
• Fix on build error with verbose log
• Fixed error messages on Static IP using Ethernet

See all bug fixes in the complete changelog below.

What's Changed

See the complete changelog down below:

• Supported devices table updated due the 2.0.0 release by @pedrominatel in #5616
• Add dummy test for self hosted GitHub runners by @tomassebestik in #5521
• [USB CDC] Fix data might not be transmitted until more is written by @me-no-dev in #5652
• [HWCDC] Improve HW CDC Implementation by @me-no-dev in #5643
• Update README.MD - "Type: For reference" labels link by @VojtechBartoska in #5619
• Docs integration with Wokwi - Blink Tutorial by @pedrominatel in #5685
• TTGO T-OI PLUS RISC-V ESP32-C3 Development Board Added by @thambirm in #5576
• Update ESP.getChipModel() to support ESP32-S2 by @kintel in #5598
• only use ksz8081 for idf versions later than 4.3 (this fixes compile as component for idf 4.3) by @liebman in #5599
• Fixes boards.txt entries for the atmegazero_esp32s2, and also the pla... by @eddieespinal in #5673
• SD_MMC max_freq_khz is set to HIGHSPEED by default by @dizcza in #5631
• Append '/' to an URL with empty path in HTTPClient::begin by @long-long-float in #5634
• Fix compilation of HardwareSerial.cpp by @everslick in #5677
• Enable progress bar on ArduinoOTA upload (platform.txt) by @tbertels in #5657
• Return size_t instead of uint8_t from BLECharacteristic::getLength().... by @felixcollins in #5687
• SDMMC frequency selection based on board type by @dukess in #5688
• fix off-by-one error in cores/esp32/libb64/cdecode.c by @kokke in #5648
• Fix analogWidth for ESP32S2 in esp32-hal-adc.c by @caternuson in #5711
• update Adafruit ESP32-S2 boards variants (feather, funhouse, magtag, metro) by @hathach in #5718
• include pin_arduino.h for variant USB defines by @hathach in #5719
• SD.open() new feature for creating all folders in path by @P-R-O-C-H-Y in #5721
• Added comment for user clarity in SDWebserver example by @akym in #5724
• Implement Thread-Safe I2C based on ESP-IDF API by @me-no-dev in #5683
• IDF master by @me-no-dev in #5479
• Remove git submodule update by @Michal-Szczepaniak in #5696
• Fix: SD_MMC deinit by @P-R-O-C-H-Y in #5732
• Fix build error when compiling with verbose logging by @urish in #5747
• Add support M5Stack Unit CAM by @otakuto in #5748
• feat: Add the ability to get the peer certificate of an SSL connection by @dirkx in #5744
• [Docs] Added Python is missing on the troubleshooting section by @pedrominatel in #5753
• IDF master by @me-no-dev in #5761
• I2C Slave Implementation by @me-no-dev in #5746
• IDF master by @me-no-dev in #5792
• libraries/SPI/src/SPI.h: SPIClass: add method to get SS pin number by @michlv in #5788
• Allows spiram malloc with wifi dynamic buffers - better free heap by @SuGlider in #5791
• removes deprecated esp_eth_set_default_handlers() by @SuGlider in #5795
• log statement missing parameter #5778 by @SuGlider in #5796
• analogRead() return value according to value set in analogReadResolution() by @P-R-O-C-H-Y in #5776
• IDF release/v4.4 by @me-no-dev in #5801
• Correct CDC on boot custom menu for Deneyap Mini by @stonehippo in #5767
• Remove _user_defined_size from EEPROMClass and EEPROM::length() just returns _size by @hideakitai in #5775
• Add ALPN support to WiFiClientSecure by @torntrousers in #5633
• yay for esp32-s2 mini module with PSRAM :) by @ladyada in #5811
• IDF release/v4.4 by @me-no-dev in #5814
• fix double promotions in rmtSetTick() by @FrankBoesing in #5847
• Fix double promotion in Stream::parseFloat() by @FrankBoesing in #5846
• Support additional authorization schemes by @Scott8440 in #5845
• Allow use of log_x() in if by @FrankBoesing in #5844
• [Docs] Added supported peripherals list on libraries section by @pedrominatel in #5829
• [Docs] Added useStaticBuffers function description by @pedrominatel in #5820
• [Docs] Added I2C driver docs by @pedrominatel in #5770
• [Examples] WiFi and Ethernet examples organization by @pedrominatel in #5830
• Solving "wifi:channel=0 is invalid" when using FTM example code by adjusting default channel in WiFiGeneric.h by @bestaar in #5809
• [FEATURE] add -D ARDUINO_PARTITION_xxx build flag to platform.txt by @tobozo in #5804
• Add precompiled by @tanakamasayuki in #5854
• [Docs] Peripheral list updated to include all supported SoCs by @pedrominatel in #5851
• Add another Wire requestFrom function signature by @torntrousers in #5768
• eliminates error messages when using Ethernet Static IP by @SuGlider in #5836
• Add basic analogWrite support based on LEDC by @me-no-dev in #5861

New Contributors

A special thank you to all new contributors!

• @tomassebestik made their first contribution in #5521
• @thambirm made their first contribution in #5576
• @kintel made their first contribution in #5598
• @liebman made their first contribution in #5599
• @dizcza made their first contribution in #5631
• @long-long-float made their first contribution in #5634
• @tbertels made their first contribution in #5657
• @felixcollins made their first contribution in #5687
• @dukess made their first contribution in #5688
• @kokke made their first contribution in #5648
• @caternuson made their first contribution in #5711
• @P-R-O-C-H-Y made their first contribution in #5721
• @akym made their first contribution in #5724
• @Michal-Szczepaniak made their first contribution in #5696
• @urish made their first contribution in #5747
• @otakuto made their first contribution in #5748
• @michlv made their first contribution in https://github.com/espressif/arduino-e...

Contributors

• @stonehippo
• @kintel
• @eddieespinal
• @hathach
• @pedrominatel
• @akym
• @dirkx
• @hideakitai
• @urish
• @ladyada
• @felixcollins
• @kokke
• @liebman
• @tobozo
• @everslick
• @michlv
• @FrankBoesing
• @long-long-float
• @tbertels
• @otakuto
• @dukess
• @dizcza
• @thambirm
• @caternuson
• @tanakamasayuki
• @Michal-Szczepaniak
• @me-no-dev
• @torntrousers
• @Scott8440
• @bestaar
• @tomassebestik
• @SuGlider
• @VojtechBartoska
• @P-R-O-C-H-Y

The Arduino ESP32 version 2.0.1, based on the master ESP-IDF development branch, is out. This new version adds new functionalities, improvements, and bug fixes.

Here is a summary of the major changes and new features added.

On peripherals:

• Serial now uses ESP-IDF API
• Wire now uses ESP-IDF API and works on all supported chips
• Wire-Slave is now implemented

Improvements:

• Smaller memory footprint (smaller than even v1.0.6)
• Improved USB-CDC support for both ESP32-S2 and ESP32-C3
• Added more information on the docs, including the blink tutorial
• Minor improvements on SPI, SD/MMC, SSL, etc
• Added ALPN support

Bug fixes:

• Several boards definitions are fixed (boards.txt).
• Fix on build error with verbose log

What's Changed

See the complete change log down below:

• Supported devices table updated due the 2.0.0 release by @pedrominatel in #5616
• Add dummy test for self hosted GitHub runners by @tomassebestik in #5521
• [USB CDC] Fix data might not be transmitted until more is written by @me-no-dev in #5652
• [HWCDC] Improve HW CDC Implementation by @me-no-dev in #5643
• Update README.MD - "Type: For reference" labels link by @VojtechBartoska in #5619
• Docs integration with Wokwi - Blink Tutorial by @pedrominatel in #5685
• TTGO T-OI PLUS RISC-V ESP32-C3 Development Board Added by @thambirm in #5576
• Update ESP.getChipModel() to support ESP32-S2 by @kintel in #5598
• only use ksz8081 for idf versions later than 4.3 (this fixes compile as component for idf 4.3) by @liebman in #5599
• Fixes boards.txt entries for the atmegazero_esp32s2, and also the pla... by @eddieespinal in #5673
• SD_MMC max_freq_khz is set to HIGHSPEED by default by @dizcza in #5631
• Append '/' to an URL with empty path in HTTPClient::begin by @long-long-float in #5634
• Fix compilation of HardwareSerial.cpp by @everslick in #5677
• Enable progress bar on ArduinoOTA upload (platform.txt) by @tbertels in #5657
• Return size_t instead of uint8_t from BLECharacteristic::getLength().... by @felixcollins in #5687
• SDMMC frequency selection based on board type by @dukess in #5688
• fix off-by-one error in cores/esp32/libb64/cdecode.c by @kokke in #5648
• Fix analogWidth for ESP32S2 in esp32-hal-adc.c by @caternuson in #5711
• update Adafruit ESP32-S2 boards variants (feather, funhouse, magtag, metro) by @hathach in #5718
• include pin_arduino.h for variant USB defines by @hathach in #5719
• SD.open() new feature for creating all folders in path by @P-R-O-C-H-Y in #5721
• Added comment for user clarity in SDWebserver example by @akym in #5724
• Implement Thread-Safe I2C based on ESP-IDF API by @me-no-dev in #5683
• IDF master by @me-no-dev in #5479
• Remove git submodule update by @Michal-Szczepaniak in #5696
• Fix: SD_MMC deinit by @P-R-O-C-H-Y in #5732
• Fix build error when compiling with verbose logging by @urish in #5747
• Add support M5Stack Unit CAM by @otakuto in #5748
• feat: Add the ability to get the peer certificate of an SSL connection by @dirkx in #5744
• [Docs] Added Python is missing on the troubleshooting section by @pedrominatel in #5753
• IDF master by @me-no-dev in #5761
• I2C Slave Implementation by @me-no-dev in #5746
• IDF master by @me-no-dev in #5792
• libraries/SPI/src/SPI.h: SPIClass: add method to get SS pin number by @michlv in #5788
• Allows spiram malloc with wifi dynamic buffers - better free heap by @SuGlider in #5791
• removes deprecated esp_eth_set_default_handlers() by @SuGlider in #5795
• log statement missing parameter #5778 by @SuGlider in #5796
• analogRead() return value according to value set in analogReadResolution() by @P-R-O-C-H-Y in #5776
• IDF release/v4.4 by @me-no-dev in #5801
• Correct CDC on boot custom menu for Deneyap Mini by @stonehippo in #5767
• Remove _user_defined_size from EEPROMClass and EEPROM::length() just returns _size by @hideakitai in #5775
• Add ALPN support to WiFiClientSecure by @torntrousers in #5633

New Contributors

A special thank you to all new contributors!

• @tomassebestik made their first contribution in #5521
• @thambirm made their first contribution in #5576
• @kintel made their first contribution in #5598
• @liebman made their first contribution in #5599
• @dizcza made their first contribution in #5631
• @long-long-float made their first contribution in #5634
• @tbertels made their first contribution in #5657
• @felixcollins made their first contribution in #5687
• @dukess made their first contribution in #5688
• @kokke made their first contribution in #5648
• @caternuson made their first contribution in #5711
• @P-R-O-C-H-Y made their first contribution in #5721
• @akym made their first contribution in #5724
• @Michal-Szczepaniak made their first contribution in #5696
• @urish made their first contribution in #5747
• @otakuto made their first contribution in #5748
• @michlv made their first contribution in #5788
• @stonehippo made their first contribution in #5767
• @hideakitai made their first contribution in #5775
• @torntrousers made their first contribution in #5633

Full Changelog: 2.0.0...2.0.1-RC1

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

Contributors

• @stonehippo
• @kintel
• @eddieespinal
• @hathach
• @pedrominatel
• @akym
• @dirkx
• @hideakitai
• @urish
• @felixcollins
• @kokke
• @liebman
• @everslick
• @michlv
• @long-long-float
• @tbertels
• @otakuto
• @dukess
• @dizcza
• @thambirm
• @caternuson
• @Michal-Szczepaniak
• @me-no-dev
• @torntrousers
• @tomassebestik
• @SuGlider
• @VojtechBartoska
• @P-R-O-C-H-Y

Summary of Major Changes and New Features Added

• Support for ESP32-S2.
• Support for ESP32-C3.
• Upload over CDC.
• Support for the KSZ8081 (Ethernet PHY).
• LittleFS update for partition label and multiple partitions.
• Added support for RainMaker.
• BLE5 features for ESP32-C3 (ESP32-S3 ready).
• ESPTOOL update.
• Added FTM support.
• Online Documentation added. See here.
• USB MSC and HID support (ESP32-S2 only).
• UART refactoring (SerialHardware).
• New examples.
• Boards added.
• Bugs fixed.

For more details check the list of Commits below.

Commits

• 44c11981 Added UM FeatherS2 Neo to boards.txt and added appropriate variants. (#5615)
• 9eea85f9 Check if m_pServerCallbacks is not null before calling method. (#5603)
• 24b76cbb Add string constructor and concat routines taking explicit length args (#5586)
• 4a55ff97 Add support for the hardware CDC in ESP32-C3 (#5614)
• a62979d8 Add missing upload.flags (#5589)
• 1f59c5ab Adds HardwareSerial::setRxBufferSize() (#5583)
• 0730e0ec Include nvs_commit() on three methods (#5309)
• c45cff5f Implement USB HID Device Support for ESP32-S2 (#5538)
• b1d072df Implements UART SerialHardware Refactoring on top of IDF (#5549)
• 929cf2c2 Add ATMegaZero ESP32-S2 microcontroller (#5569)
• 87853353 Add SparkFun ESP32 MicroMod microcontroller (#5556)
• e265bd0d Add new board (Deneyap Mini) (#5531)
• 94809ce3 fix: timerRead() is returning the last read value, not the actual #3434 (#5498)
• 29455a04 Fix issue #5507 "Constructor WebServer::WebServer(IPAddress addr, int... (#5509)
• 78499c45 Added Franzininho WiFi board support (#5570)
• ce680708 Fixed the external link to a new tab (LOLIN boards) (#5571)
• 90c01dab Fix build error in ESP-IDF
• 000d967d Merge pull request #5547 from pedrominatel/docs/wemos_boards
• 44dd99f5 Merge branch 'master' into docs/wemos_boards
• b580bb23 Add log_buf to pretty print buffers
• a7ea737f Added LOLIN boards o the boards list.
• 2af8cc34 Fixes Touchpad Interrupt (#5527)
• e5bd18d6 Fix I2C Scan for S2 and C3 (#5528)
• a4118ea8 Add ET-Board BUILTIN_LED pin (#5490)
• c4fcab28 Fix issue #5506 "WebServer serveStatic () can cause LoadProhibited exception in _svfprintf_r" (#5508)
• 0acbe781 Increase default timeout for WiFiClient from 3ms to 3s (#5496)
• 0b0dfab3 Fix race in log_printf (#5523)
• 5fd73792 Fix wrong attenuation being set to pins (#5522)
• 5bb8177a Add initial support for USB MSC (#5466)
• be84c821 [WiFiClient] Default connection timeout, when no timeout provided (#5487)
• 31127f42 Support for Transfer-Encoding headers that specify "identify" (#5486)
• 4365a454 Fix WiFi Deinit bug
• 023ae75b Rework pulseIn to work on ESP32-C3
• c5a1f3ef Corrected CLASSIC_BT_ENABLED to CONFIG_BT_CLASSIC_ENABLED. (#5471)
• 9406f8e4 Weaken tinyusb callbacks (#5475)
• 65eafd16 Fixes ESP32-S2 LEDC PWM #5375 #5050 (#5452)
• d5a98f9a Doc: Updated Troubleshooting file (#5430)
• 3780b5c9 Unbreak integer to string conversion functions. (#5423) (#5438)
• 1775dd1f Add ReadTheDocs CI (#5456)
• 6972695d IDF master c69f0ec32 (#5449)
• e0e5c886 Create PULL_REQUEST_TEMPLATE.md (#5439)
• 6e47e18a Add files via upload (#5433)
• 34125cee Examples update, add a note for configTime() that only one ntp server is supported by lwip (#5343)
• ee247360 Update README.md
• 5458df0a Fixes Serial.end() hanging on ESP32-S2 (#5434)
• e12d8c8f fix: WiFiClientSecure connection timeout (#5398) (#5418)
• 4ada3f58 Fix Windows USB issues
• 268595c7 Various USB fixes (#5422)
• 4a0305a0 Fixes SD begin() end() memory leak #2897 (#5419)
• 6393dbc9 Fix gh-pages update script
• 49df8778 Merge pull request #5417 from pedrominatel/docs/readme_docs_update
• f79411f3 Links to the new docs updated and new docs build badge added
• db4e7667 add callback to HTTPUpdate (#5408)
• f64ca2e0 Fixed typo in comments. (#5407)
• 1effae46 Docs: Initial documentation structure using Sphinx (#5355)
• d9833f9b Remove mkfatfs tool from package json
• 0aafa05e Added function to retrieve the amount of data received from an BLECharacteristic (#5339)
• 16f4b0f5 IDF master d93887f9f (#5336)
• 780588dc Remove undocumented and uncontrollable WiFI RSSI filter. (#5393)
• eac8b2de fix port{Input,Output,Mode}Register macros for chips with <=32 pins (#5402)
• a9bd39de Fix pin attenuation being overwritten (#5399)
• 5eda2781 Update camera example (#5397)
• c8a4010f Rename LITTLEFS to LittleFS to match ESP8266 (#5396)
• dd25e2b9 Fix some WiFi issues (#5395)
• cf6ab9c8 component: Remove circular dependency around 'main' (#5391)
• 676f5cfe fix UART FIFO test for being full (#5390)
• f4f1c895 pinMatrixInDetach() has wrong parameter (#5385)
• cbcba53d Improve error message when ADC2 can not be used because WiFi is On
• c37557c7 Update .gitignore (#5323)
• 8f46bade Fix hardware timers
• 21947ebe Make String::concat() faster for some types. (#5307)
• c7bdb234 Update stale.yml (#5299)
• cf43d174 Add FTM support and examples (#5272)
• b1bcec08 Update boards_manager.md (#5296)
• 46d888eb Fix #5293 by adding missing dependency to nghttp (#5294)
• 1f4f2b6e Enable clock output for Ethernet RMII on ESP32 (#5274)
• ea236e28 Fix incorrect Flash Size in Esp...

Commits

• c45cff5f Implement USB HID Device Support for ESP32-S2 (#5538)
• b1d072df Implements UART SerialHardware Refactoring on top of IDF (#5549)
• 929cf2c2 Add ATMegaZero ESP32-S2 microcontroller (#5569)
• 87853353 Add SparkFun ESP32 MicroMod microcontroller (#5556)
• e265bd0d Add new board (Deneyap Mini) (#5531)
• 94809ce3 fix: timerRead() is returning the last read value, not the actual #3434 (#5498)
• 29455a04 Fix issue #5507 "Constructor WebServer::WebServer(IPAddress addr, int... (#5509)
• 78499c45 Added Franzininho WiFi board support (#5570)
• ce680708 Fixed the external link to a new tab (LOLIN boards) (#5571)
• 90c01dab Fix build error in ESP-IDF
• 000d967d Merge pull request #5547 from pedrominatel/docs/wemos_boards
• 44dd99f5 Merge branch 'master' into docs/wemos_boards
• b580bb23 Add log_buf to pretty print buffers
• a7ea737f Added LOLIN boards o the boards list.
• 2af8cc34 Fixes Touchpad Interrupt (#5527)
• e5bd18d6 Fix I2C Scan for S2 and C3 (#5528)
• a4118ea8 Add ET-Board BUILTIN_LED pin (#5490)
• c4fcab28 Fix issue #5506 "WebServer serveStatic () can cause LoadProhibited exception in _svfprintf_r" (#5508)
• 0acbe781 Increase default timeout for WiFiClient from 3ms to 3s (#5496)
• 0b0dfab3 Fix race in log_printf (#5523)
• 5fd73792 Fix wrong attenuation being set to pins (#5522)
• 5bb8177a Add initial support for USB MSC (#5466)
• be84c821 [WiFiClient] Default connection timeout, when no timeout provided (#5487)
• 31127f42 Support for Transfer-Encoding headers that specify "identify" (#5486)
• 4365a454 Fix WiFi Deinit bug
• 023ae75b Rework pulseIn to work on ESP32-C3
• c5a1f3ef Corrected CLASSIC_BT_ENABLED to CONFIG_BT_CLASSIC_ENABLED. (#5471)
• 9406f8e4 Weaken tinyusb callbacks (#5475)
• 65eafd16 Fixes ESP32-S2 LEDC PWM #5375 #5050 (#5452)
• d5a98f9a Doc: Updated Troubleshooting file (#5430)
• 3780b5c9 Unbreak integer to string conversion functions. (#5423) (#5438)
• 1775dd1f Add ReadTheDocs CI (#5456)
• 6972695d IDF master c69f0ec32 (#5449)
• e0e5c886 Create PULL_REQUEST_TEMPLATE.md (#5439)
• 6e47e18a Add files via upload (#5433)
• 34125cee Examples update, add a note for configTime() that only one ntp server is supported by lwip (#5343)
• ee247360 Update README.md
• 5458df0a Fixes Serial.end() hanging on ESP32-S2 (#5434)
• e12d8c8f fix: WiFiClientSecure connection timeout (#5398) (#5418)

Commits

• 4ada3f58 Fix Windows USB issues
• 268595c7 Various USB fixes (#5422)
• 4a0305a0 Fixes SD begin() end() memory leak #2897 (#5419)
• 6393dbc9 Fix gh-pages update script
• 49df8778 Merge pull request #5417 from pedrominatel/docs/readme_docs_update
• f79411f3 Links to the new docs updated and new docs build badge added
• db4e7667 add callback to HTTPUpdate (#5408)
• f64ca2e0 Fixed typo in comments. (#5407)
• 1effae46 Docs: Initial documentation structure using Sphinx (#5355)
• d9833f9b Remove mkfatfs tool from package json
• 0aafa05e Added function to retrieve the amount of data received from an BLECharacteristic (#5339)
• 16f4b0f5 IDF master d93887f9f (#5336)
• 780588dc Remove undocumented and uncontrollable WiFI RSSI filter. (#5393)
• eac8b2de fix port{Input,Output,Mode}Register macros for chips with <=32 pins (#5402)
• a9bd39de Fix pin attenuation being overwritten (#5399)
• 5eda2781 Update camera example (#5397)
• c8a4010f Rename LITTLEFS to LittleFS to match ESP8266 (#5396)
• dd25e2b9 Fix some WiFi issues (#5395)
• cf6ab9c8 component: Remove circular dependency around 'main' (#5391)
• 676f5cfe fix UART FIFO test for being full (#5390)
• f4f1c895 pinMatrixInDetach() has wrong parameter (#5385)
• cbcba53d Improve error message when ADC2 can not be used because WiFi is On
• c37557c7 Update .gitignore (#5323)
• 8f46bade Fix hardware timers
• 21947ebe Make String::concat() faster for some types. (#5307)
• c7bdb234 Update stale.yml (#5299)
• cf43d174 Add FTM support and examples (#5272)
• b1bcec08 Update boards_manager.md (#5296)
• 46d888eb Fix #5293 by adding missing dependency to nghttp (#5294)
• 1f4f2b6e Enable clock output for Ethernet RMII on ESP32 (#5274)
• ea236e28 Fix incorrect Flash Size in Esp32c3 (#5279)
• 5ae3e836 Fix wrong password same SSID (#5124)
• eca328e5 Add support for build_opt.h in the sketch folder to use additional global build options (#5237)
• 5b5cbb49 Fix softap_config_equal compare auth_mode/cipher #5115 (#5121)
• aec2635b WifiAP disable insecure TKIP (#5122)
• e7e94ea2 Enable I2C_BUFFER_LENGTH definition for Wire lib (#5172)
• b5ee7dde Convert hall read to use hal/idf (#5268)
• 10602939 Added support for Trueverit ESP32 Universal IoT Driver MK II (#5269)
• 23820874 Added the README template for examples and libraries (#5228)
• 4f9e583b IDF master 1d7068e4b (#5257)
• 7f87d0fc Fix compilation for use as IDF component (#5265)
• 90fc68d8 doitESPduino32 - Add definitions for SPI pins names (#5248)
• 4f8e5b54 Add new board (Deneyap Kart) (#5236)
• 483a424d restore apache-2.0 licence to to BLE library (#5261)
• e7d0ad2e Update BLEScan.cpp (#5241)
• 77f50445 WMath.cpp doesn't include Arduino.h, where makeWord(h, l) is declared, common denominator type therefore is uint8_t, which is in use already in Arduino.h, too. (#5230)
• 67de199b add onMtuChanged to BLEServerCallbacks (#5222)
• 39155e70 ssl_client.cpp: Fix parameter name in _handle_error. (#5217)
• f385ee42 Fixed labels on the boards pinouts images (#5213)
• e30b821b Add missing Wifi Provisioning dependency (#5203)
• cb7aef1e Fix crash in WiFiClient when read() called after stop() (#5197)
• fb513c79 Add uPesy ESP32 DevKit boards support (#5144)
• 90d3ae25 Added support for Trueverit Universal IoT Driver (#5219)
• a618fc13 IDF master c13afea63 (#5214)
• 0db9e2f4 Update esptool
• a1d8b959 Fix length typo (#5189)
• de66c39f Bump library versions to 2.0.0 (#5182)
• 1b5696a5 Bug fix for Heltec boards defintion (#5180)
• 955675e7 Adding build.mcu to save name killed export. reverting. fixes #5174 (#5177)
• 2082945d Make LOOP_STACK_SIZE user configurable at compile-time. (#5173)
• 0d6b1422 Update BLE_client.ino (#5156)
• 7c3a82a5 Fix (en|dis)able typo on BLEAdvertising start() (#5142)
• dadc1015 Add files via upload - CONTRIBUTING.rst (#5138)
• 1b2f34b0 MDNSResponder: Add method to get TXT key values. (#5135)
• 76f0a80f Removed second NTP server from configTime. SNTP only uses one (#5127)
• 5bfbcfc9 Added condition to only use tinyusb as needed (#5123)
• 7a53c2d3 softAP should only start modern WPA2 (#5114)
• cb2fbe44 Added new boads pinout images for ESP32, ESP32-S2 and ESP32-C3 (#5133)
• 48becf89 Update boards.txt (#5113)
• 15f88538 RMaker_readme: Minor corrections (#5175)
• 7856de7a BLE5 features to use with C3/S3 (#5085)
• e62ff6dc RainMaker library: Minor changes (#5092)
• 18249907 Still finding missing bits for the tinys2 board definition :( (#5098)
• cdd48e4e Re-add TinyS2 to boards.txt (#5093)
• 0c3597f8 readme: minor fixes around chip names (#5097)
• 82161beb Use cpu_hal_get_cycle_count for all chips
• 55b8f67d In esp32-hal-log, direct calls to ESP_LOG_x macros is more efficient than using intermediate function log_to_esp (#5081)
• 9c20f1bd added denky boards (#5079)
• b45cf11f Fixed ESP::getCycleCount for S2/C3 (#5075)
• fb0d63b5 Update README.md