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Display garbage on OLED SSD1306 screen when using core version 1.5.2 for Arduino R4 Nano

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: imperfectionPerceived defect in any part of projectPerceived defect in any part of project

Status: Open.

#520 In arduino/ArduinoCore-renesas;

· vbturri opened on Jan 17, 2026

Imperfection Report: Arduino Portenta C33: CAN1.write() corrupts CAN0 RX FIFO (message RAM overlap)

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: imperfectionPerceived defect in any part of projectPerceived defect in any part of project

Status: Open.

#513 In arduino/ArduinoCore-renesas;

· hamatyo0126 opened on Dec 28, 2025

Arduino Uno R4 Wifi UDP Delay

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: imperfectionPerceived defect in any part of projectPerceived defect in any part of project

Status: Open.

#512 In arduino/ArduinoCore-renesas;

· danielbchapman opened on Dec 18, 2025

lwipClient::write() returns 0 on failure instead of number of bytes written

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: imperfectionPerceived defect in any part of projectPerceived defect in any part of project

Status: Open.

#511 In arduino/ArduinoCore-renesas;

· iofarm opened on Dec 16, 2025

R4 delay() does not properly handle millis() wrap-around

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: imperfectionPerceived defect in any part of projectPerceived defect in any part of project

Status: Open.

#506 In arduino/ArduinoCore-renesas;

· WestfW opened on Nov 26, 2025

add full support for mTLS to WiFiSSLClient

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: enhancementProposed improvementProposed improvement

Status: Open.

#499 In arduino/ArduinoCore-renesas;

· Matthew-Reidy opened on Oct 10, 2025

Provide a WebServer library for the UNO R4 WiFi

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: enhancementProposed improvementProposed improvement

Status: Open.

#491 In arduino/ArduinoCore-renesas;

· ArsiTheFox opened on Sep 13, 2025

Add safety check to prevent system crash when calling Serial1.end() without Serial1.begin() on Arduino Uno R4

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: enhancementProposed improvementProposed improvement

Status: Open.

#489 In arduino/ArduinoCore-renesas;

· a10036gt opened on Sep 3, 2025

random() is very slow on Uno R4

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: imperfectionPerceived defect in any part of projectPerceived defect in any part of project

Status: Open.

#484 In arduino/ArduinoCore-renesas;

· WestfW opened on Aug 5, 2025

RA4M2 Support?

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: enhancementProposed improvementProposed improvement

Status: Open.

#482 In arduino/ArduinoCore-renesas;

· pwnept opened on Jul 27, 2025

CAN write possible bug

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: imperfectionPerceived defect in any part of projectPerceived defect in any part of project

Status: Open.

#473 In arduino/ArduinoCore-renesas;

· domw95 opened on Jun 26, 2025

Exposing the PwmArray in analog.cpp

topic: codeRelated to content of the project itselfRelated to content of the project itself

type: enhancementProposed improvementProposed improvement

Status: Open.

#462 In arduino/ArduinoCore-renesas;

· landret opened on Apr 19, 2025