arduino/ArduinoCore-samd

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Arduino Core for SAMD21 CPU

Stars: 502
Forks: 740
Open beginner issues: 0
Indexed issues: 170

Dominant language: C
License: LGPL-2.1
Last GitHub push: Sep 10, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

Open All

170 open issues indexed

SamdSercom tutorial has a bug: integer is read but only byte is sent Open

arduino/ArduinoCore-samd#552 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
un-useful and bloaty assert() in SPI library. Open

arduino/ArduinoCore-samd#559 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
inverted one wire mode with SoftwareSerial library doesn´t work with XIAO (SAMD21) Open

arduino/ArduinoCore-samd#568 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Bootloader does not honor security bit Open

arduino/ArduinoCore-samd#570 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SAMD21 USBDeviceClass::ISRHandler() called continuously. Open

arduino/ArduinoCore-samd#575 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Bug when doing analogWrite() then digitalWrite() Open

arduino/ArduinoCore-samd#589 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
I2C Never will set CTRLA.bit.SPEED register Open

arduino/ArduinoCore-samd#595 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Serial.readBytes stops reading data from a macOS host after ~2 mins (since 1.8.10) Open

arduino/ArduinoCore-samd#598 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
About file Wire.h Open

arduino/ArduinoCore-samd#599 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
I2C/Wire behavior reversed when using both onRequest and onReceive callbacks Open

arduino/ArduinoCore-samd#601 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SPI / SERCOM library doesn't seem to configure SPI clock correctly Open

arduino/ArduinoCore-samd#603 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
upgraded to v 1.8.11 from 1.8.9 and now the groove dht library doesn't work anymore Open

api bug

arduino/ArduinoCore-samd#609 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SERCOM - Support for "Single-Wire Half-Duplex" UART Open

arduino/ArduinoCore-samd#611 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
delayMicroseconds in complicated code causes compilation to fail Open

arduino/ArduinoCore-samd#614 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Builds broken in master branch (1.8.11)?! Open

arduino/ArduinoCore-samd#616 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Timeout on SERCOM I2C functions Open

arduino/ArduinoCore-samd#621 · 1 comment · 1 reaction · 0 assignees · Indexed Sep 14, 2026
attachInterruptParam missing Open

arduino/ArduinoCore-samd#624 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Winterrupt.c: swapped lines lead to lost interrupts Open

arduino/ArduinoCore-samd#625 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Another toolchain update request thread. Open

arduino/ArduinoCore-samd#627 · 0 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
variant.cpp has so many mistakes that it can only be intentional Open

arduino/ArduinoCore-samd#630 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Make SERCOM(0,1)_Handler optional Open

arduino/ArduinoCore-samd#631 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
No .sig Open

arduino/ArduinoCore-samd#634 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
No such file or directory for openocd Open

arduino/ArduinoCore-samd#635 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
-DCDC_DISABLED Error Open

arduino/ArduinoCore-samd#637 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Serial5 on Arduino M0 Pro no longer works on 1.8.11 Open

arduino/ArduinoCore-samd#640 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SerialUSB.available() is hanging Open

arduino/ArduinoCore-samd#643 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Cant connect to NPE CABLE device using ver 1.8.10 Open

arduino/ArduinoCore-samd#647 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Error Writing into flash memory - Arduino Nano 33 IoT Open

arduino/ArduinoCore-samd#660 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
User-hostile library names (SBU, SDU, SFU, SNU, SSU) Open

arduino/ArduinoCore-samd#662 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Arduino Zero USB HID Broken and unusable Programing Port Open

waiting for feedback

arduino/ArduinoCore-samd#663 · 15 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
ATSAMD21 is pulling ports low when calling wire.onRequest() Open

arduino/ArduinoCore-samd#670 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Calibration method in CorrectADCResponse.ino seems inadequate Open

arduino/ArduinoCore-samd#671 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Arduino hangs when reading from non-existent pins. Open

arduino/ArduinoCore-samd#674 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SPI / SERCOM library sets SCK rate higher than maxSpeed specified in SPISetting Open

arduino/ArduinoCore-samd#675 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SPIClass::usingInterrupt() interruptMask not set correcly Open

arduino/ArduinoCore-samd#677 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Serial Flush blocks forever but not only at programm start Open

arduino/ArduinoCore-samd#678 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Udp.h included in ArduinoCore-samd and in ArduinoCore-API Open

arduino/ArduinoCore-samd#679 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
I2S_RIGHT_JUSTIFIED_MODE has no output Open

arduino/ArduinoCore-samd#682 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SAMD21 micros() problem Open

arduino/ArduinoCore-samd#684 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Typo in startup.c comment Open

arduino/ArduinoCore-samd#685 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
USBCore SET_CONFIGURATION handler is not interrupt-safe Open

arduino/ArduinoCore-samd#688 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
variant/mkrnb1500 SARA R410 UART not configured to utilize flow control (RTS/CTS) Open

arduino/ArduinoCore-samd#689 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
is it possible to completley deinitialise usbhost Open

arduino/ArduinoCore-samd#690 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Cross-post: Increasing timing errors with rosserial Open

arduino/ArduinoCore-samd#694 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SFU Library not working for MKRNB1500 Open

arduino/ArduinoCore-samd#697 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SAMD SPI issues Open

arduino/ArduinoCore-samd#698 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Uploading new sketch after burning the mkrzero bootloader Open

arduino/ArduinoCore-samd#699 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Serial buffer size unchangeable Open

arduino/ArduinoCore-samd#700 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Error: unable to find CMSIS-DAP device Open

arduino/ArduinoCore-samd#701 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Please implement setWireTimeout() in SAMD Wire library Open

arduino/ArduinoCore-samd#702 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

arduino/ArduinoCore-samd

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