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 #6337
.github/workflows: Remove the selfhost runner test by @Ouss4 in #6343
Add new board (Deneyap Kart 1A) by @zeynepdicle in #6324
add lolin s2 pico board def by @wemos in #6325
Update esp32-hal-log.h by @cyberman54 in #6351
Fix some hardware definition pins by @ladyada in #6353
Fix DNSServer crash by @BlueAndi in #6354
Added more details about PlatformIO by @pedrominatel in #5540
FIX - wifiBegin works every 2nd time when connecting to same AP by @P-R-O-C-H-Y in #6359
WiFi DA: Added Dual Antenna to the docs and example created by @pedrominatel in #6357
[esp32-hal-log.h] add #ifdef for LOG_LOCAL_LEVEL by @cyberman54 in #6358
Added ESP32-WROOM-DA module to boards.txt by @pedrominatel in #6361
FEATURE: Implemented new types of Wifi SmartConfig by @P-R-O-C-H-Y in #6367
Fixes DHCP Server Lease Range for any AP Server Static IP Address by @SuGlider in #6296
Adds C++ std::function to Serial.onReceive() by @SuGlider in #6364
log_printf may cause memory leak and unexpected behaviour by @BlueAndi in #6360
Build (using arduino-builder) and run tests by @Ouss4 in #6313
Fixes rmtDeinit() and tests RX/TX before operations by @SuGlider in #6369
CameraWebServer duplicate line fix by @VojtechBartoska in #6370
Fix ledc panic’ed when wrong setup of frequency and bit width by @P-R-O-C-H-Y in #6371
Fixed the antenna GPIO argument on the DA example by @pedrominatel in #6392
Allows setting only one pin (rx or tx) in the first begin() by @SuGlider in #6394
publish.yml: Remove the debug job and fix an error in the workflow. by @Ouss4 in #6408
Implemented tone and noTone; fixes #980 by @PilnyTomas in #6402
publish.yml: Limit the running scope of the publish Workflow. by @Ouss4 in #6428
Add missing include in AsyncUDP.h by @mrengineer7777 in #6412
Some board variant fixes by @ladyada in #6411
Added another overloaded WiFiSTAClass::begin() function that provides… by @jpswensen in #6398
[Docs] Added the guideline for documentation by @pedrominatel in #6409
Fix boot freeze when trying to init PSRAM on Pico D4 by @s-hadinger in #6434
Adds HardwareSerial::setTxBufferSize() by @gonzabrusco in #6383
Fixes USB CDC setRxBufferSize(), begin(), _onRX() by @SuGlider in #6413
Change "python" to "python3" by @tomorrow56 in #6448
Warns about SPP only available for ESP32 by @SuGlider in #6455
Edited VFSFileImpl::read to use both read/fread by @P-R-O-C-H-Y in #6456
Adding sectorsize() and numSectors() to SD by @tobozo in #6457
(boards.txt) Add partition scheme menu for WeMos WiFi&Bluetooth Battery by @garubi in #6479
Add Preferences library API and tutorial documents by @Xylopyrographer in #6442
Esp32 s3 support by @me-no-dev in #6341
add variant init code for the feather s2 tft by @ladyada in #6447
Adds HardwareSerial::setRxTimeout() by @gonzabrusco in #6397
Fix linking failure for space in path in PlatformIO builder scripts by @maxgerhardt in #6464
Add S3 in Headline by @Jason2866 in #6491
Reordering - HardwareSerial Constructor by @SuGlider in #6492
IDF release/v4.4 by @me-no-dev in #6493
Fix Reading MAC from efuse for ESP32 Arduino 2.x.x by @smuellener in #6459
Update toolchain to gcc8_4_0-esp-2021r2-patch3 by @me-no-dev in #6497
SDWebServer example fix for 2.x.x versions by @P-R-O-C-H-Y in #6505
add package.json to release zip by @Jason2866 in #6501
add S3 board in package_esp32_index.template.json by @Jason2866 in #6518
Compiler error by @nimaltd in #6523
BLEAddress: Correct less- and greater-than operators by @BrianRossmajer in #6521
Fix Ticker::Active crash if _ticker null (#6511) by @GitNik1 in #6513
Add better esptool support (ArduinoIDE 2.0.0) by @me-no-dev in #6506
PHY8720(A) init timout failures: need to revert "GPIO refactoring (#6259)" by @dok-net in #6527
IDF release/v4.4 by @me-no-dev in #6594
Update camera example to support face detection and recognition by @me-no-dev in #6603
Change pinMode OUTPUT to INPUT_OUTPUT by @P-R-O-C-H-Y in #6602
Changed type of LEDC frequency from double to uint32_t by @P-R-O-C-H-Y in #6570
BUGFIX: FS read + speed improvements for SD by @P-R-O-C-H-Y in #6569
workflows/publish.yml: Run the workflow on success and failure only. by @Ouss4 in #6531
Pull request/Issue Templates and Readme update by @VojtechBartoska in #6577
PlatformIO minor updates by @valeros in #6625
publish.yml: Minor fix to the workflow syntax by @Ouss4 in #6620
LittleFs is working with C3 by @Jason2866 in #6618
LittleFS Platformio example update by @Jason2866 in #6617
Added RainMaker support on Arduino IDE for ESP32-C3/S2/S3 by @pedrominatel in #6598
Touch change to init only selected GPIO. by @P-R-O-C-H-Y in #6609
Allow BluetoothSerial::connect() with specified channel and more options by @ferbar in #6380
Fixes stream load memory leak in WifiSecureClient for SSL CACert, Certificate, and Private Key by @fillybrese in #6387
Call i2c_set_timeout in i2cSetClock by @PaulZC in #6537
Uniform behaviour of WiFiClientSecure and WiFiClient setTimeout() by @gonzabrusco in #6562
Salvage ESP_IDF TAGs when ArduinoCore logging is enabled by @ankostis in #6567
add AirM2M_CORE_ESP32C3 board by @dreamcmi in #6613
Added Unexpected Maker Reflow Master Pro (UM RMP) board + Fixed TinyS2 pins by @UnexpectedMaker in #6630
Add CI job which tries to build arduino-esp32 as a component by @igrr in #5842
[Docs] Actualize PlatformIO installation instructions by @valeros in #6629
Fix HTTP Client failing to connect because of wrong timeout by @me-no-dev in #6633
Added support for Trueverit ESP32 Universal IoT Driver MK III by @Simonefardella in #6640
Fix onRequest being called for every slave address by @me-no-dev in #6649
Add more controls over WiFi.begin and WiFi.scan by @me-no-dev in #6651
Fixes INADDR_NONE by @SuGlider in #6659
Properly handle ARDUINO_PARTITION define in PlatformIO by @valeros in #6681
Added new "Non TinyUF2 bootloader only" capability for boards that support TinyUF2 bootloaders by @UnexpectedMaker in #6668
Fix uploader tool for ESPduino32 in boards.txt by @DeuxVis in #6665

New Contributors

A special thank you to all new contributors!

@JAndrassy made their first contribution in #6084
@Darek7D made their first contribution in #6087
@mrengineer7777 made their first contribution in #6108
@iltis42 made their first contribution in #6109
@gcweeks made their first contribution in #6110
@niwantha33 made their first contribution in #6151
@esp32wrangler made their first contribution in #6106
@sqfmi made their first contribution in #6158
@h-enes-simsek made their first contribution in #6204
@mathertel made their first contribution in #6179
@im-pro-at made their first contribution in #6206
@IanSC made their first contribution in #6218
@renebohne made their first contribution in #6219
@s-hadinger made their first contribution in #6224
@magicarm22 made their first contribution in #6203
@mattsches1 made their first contribution in #6216
@bbsan2k made their first contribution in #6280
@yigitabi5444 made their first contribution in #6277
@pgrawehr made their first contribution in #6315
@BlueAndi made their first contribution in #6354
@jpswensen made their first contribution in #6398
@gonzabrusco made their first contribution in #6383
@tomorrow56 made their first contribution in #6448
@garubi made their first contribution in #6479
@Xylopyrographer made their first contribution in #6442
@smuellener made their first contribution in #6459
@nimaltd made their first contribution in #6523
@BrianRossmajer made their first contribution in #6521
@GitNik1 made their first contribution in #6513
@ferbar made their first contribution in #6380
@fillybrese made their first contribution in #6387
@PaulZC made their first contribution in #6537
@ankostis made their first contribution in #6567
@dreamcmi made their first contribution in #6613
@DeuxVis made their first contribution in #6665

Full Changelog: 2.0.2...2.0.3

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

espressif/arduino-esp32 2.0.3 ESP32 Arduino 2.0.3 based on ESP-IDF 4.4.1 on GitHub