Issues

• ETH.linkSpeed() returns 100 on a 1000 Mbps link (ESP32-S31, RGMII)

  Status: Awaiting triage
  espressif/arduino-esp32#12989 · Filter by author xreef opened on Oct 14, 2026
  

• HWCDC: writes can stall for ~2 s after Serial Monitor closes

  espressif/arduino-esp32#12983 · Filter by author ladyada-eagleclaw opened on Oct 8, 2026
  1

  

• ESP32-P4 (ES): Store access fault in hw_cdc_isr_handler (USB_SERIAL_JTAG.ep1) when CORE_DEBUG_LEVEL>0 with HW CDC

  Area: UARTArea: USB
  espressif/arduino-esp32#12966 · Filter by author tyeth-ai-assisted opened on Oct 2, 2026
  2

  

• esp_matter: Optional attributes not provisioned for Water Heater endpoint

  Area: Matter
  espressif/arduino-esp32#12948 · Filter by author lboue opened on Sep 26, 2026
  

• analogRead() has strange noise on ESP32-S2 and no error checking for use of adc_oneshot_read()

  IDE: Arduino IDEStatus: Awaiting triage
  espressif/arduino-esp32#12944 · Filter by author kevinjwalters opened on Sep 25, 2026
  7

  

• Complex Zigbee Coordinator example request

  Area: ZigbeeType: Feature request
  espressif/arduino-esp32#12904 · Filter by author patience4711 opened on Sep 16, 2026
  1

  

• large_littlefs_32MB.csv contains wrong partition subtype

  IDE: Arduino IDEStatus: Awaiting triage
  espressif/arduino-esp32#12898 · Filter by author landall opened on Sep 12, 2026
  2

• Upload to ESP32-CAM fails for board versions 3.3.9-3.3.11

  IDE: Arduino IDEStatus: Awaiting triage
  espressif/arduino-esp32#12884 · Filter by author DaveBolt opened on Sep 5, 2026
  2

• Add support for ESP32-H21

  Type: Feature request
  espressif/arduino-esp32#12862 · Filter by author brolly759 opened on Aug 28, 2026

• [Matter] Support Endpoint for Soil Sensor (Soil Measurement cluster 0x0430)

  Area: MatterType: Feature request
  espressif/arduino-esp32#12854 · Filter by author lboue opened on Aug 24, 2026
  2

  

• [Matter] Add support for Water Heater device type

  Area: MatterType: Feature request
  espressif/arduino-esp32#12850 · Filter by author lboue opened on Aug 24, 2026
  

• [Matter] Add support for Water Valve device type

  Area: MatterType: Feature request
  espressif/arduino-esp32#12849 · Filter by author lboue opened on Aug 24, 2026 · 4.0.0
  

• Some pins cannot be used as SPI ChipSelect as they block/disable the MISO pin (GPIO19)?

  Status: Awaiting triage
  espressif/arduino-esp32#12840 · Filter by author I-Connect opened on Aug 19, 2026
  6

• adding std::string to the Preferences object getter and putter.

  Feature

  espressif/arduino-esp32#12831 · Filter by author SuGlider opened on Aug 17, 2026
  1

  

• [Documentation] I2C Slave: Use Wire.write() in onRequest, not Wire.slaveWrite() - Reference Implementation

  IDE: Arduino IDEStatus: Awaiting triage
  espressif/arduino-esp32#12828 · Filter by author Damika3002 opened on Aug 15, 2026

• ESP32-P4 USBSerial can not receive data from the host PC + no USB event occuring

  Area: USBIDE: Arduino IDEStatus: Awaiting triage
  espressif/arduino-esp32#12819 · Filter by author sporubcan opened on Aug 11, 2026
  3

  

• [USB HWCDC] 'connected' state isn't reset leaving port in limbo state after ~2 minutes

  Area: USBStatus: Awaiting triage
  espressif/arduino-esp32#12782 · Filter by author TD-er opened on Jul 26, 2026
  9

  

• Using touch causes Arduino IDE upload to fail

  Area: Peripherals APIIDE: Arduino IDE
  espressif/arduino-esp32#12770 · Filter by author liffiton opened on Jul 20, 2026
  2

  

• half-closed TCP connection results in premature closure

  Status: Awaiting triage
  espressif/arduino-esp32#12751 · Filter by author JonNelson opened on Jul 9, 2026
  6

  

• [Zigbee] Second IAS Zone endpoint fails to persist CIE address across reboots (NOT_AUTHORIZED on enroll)

  Area: ZigbeeIDE: Arduino IDEStatus: Blocked upstream 🛑
  espressif/arduino-esp32#12748 · Filter by author Etilicato opened on Jul 6, 2026
  4

  

• Zigbee Gateway example - watch dog triggered issue

  Area: Zigbee
  espressif/arduino-esp32#12604 · Filter by author robertgregor opened on May 19, 2026
  4

  

• ESP-P4 X: The SPI CLK high level does not stabilize at 3.3V

  Status: Test needed
  espressif/arduino-esp32#12598 · Filter by author RadioDisney opened on May 18, 2026
  3

  

• ESP32C6 can not connect with Arduino IDE to Rainmaker app

  Status: Awaiting triage
  espressif/arduino-esp32#12579 · Filter by author flippe0456 opened on May 8, 2026
  3

  

• Zibgee: unable to pair device

  Area: Zigbee
  espressif/arduino-esp32#12520 · Filter by author jmuchemb opened on Apr 16, 2026
  5

  

• Zigbee Door Lock cluster implementation

  Area: ZigbeeType: Feature request
  espressif/arduino-esp32#12492 · Filter by author P-R-O-C-H-Y opened on Mar 30, 2026
  4