arduino/ArduinoCore-samd

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Arduino Core for SAMD21 CPU

Stars: 502
Forks: 740
Open beginner issues: 2
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

Beginner friendly Everything

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170 open issues indexed

enableWire() Needs to check SCL and SDA before setting bus state to idle Open

bug Component: Core Component: Wire

Difficulty 3/5 1-2 days Newbie friendliness 52/100

arduino/ArduinoCore-samd#743 · Opened May 31, 2026
(MKR Zero) Reading ADC_BATTERY via Serial Monitor without a battery attached returns the USB voltage Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

arduino/ArduinoCore-samd#742 · Opened Apr 24, 2026
Unitialized variable `BusOwner` Open

bug Component: Wire

Difficulty 1/5 Under an hour Newbie friendliness 25/100

arduino/ArduinoCore-samd#740 · 2 comments · Opened Feb 2, 2026
`TwoWire` is in the `arduino::` namespace Open

api bug Component: Wire

Difficulty 2/5 1-3 hours Newbie friendliness 58/100

arduino/ArduinoCore-samd#738 · Opened Feb 2, 2026
Project dead? Open

Difficulty 5/5 Over a week Newbie friendliness 1/100

arduino/ArduinoCore-samd#734 · Opened Jun 14, 2025
Hang when calling noTone() Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

arduino/ArduinoCore-samd#732 · Opened May 20, 2025
EXTINT[15] on D26 line, PA27 Open

Difficulty 1/5 Under an hour Newbie friendliness 55/100

arduino/ArduinoCore-samd#731 · 1 reaction · Opened Mar 30, 2025
Raspberry Pi install fails with "Tool avrdude not available for your operating system" Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#730 · 3 comments · Opened Mar 24, 2025
Bug: digitalWrite() incorrectly uses DIRSET register instead of DIR register for pin direction checking Open

Difficulty 1/5 Under an hour Newbie friendliness 65/100

arduino/ArduinoCore-samd#727 · Opened Mar 2, 2025
<charconv> not found (and string_view, too) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#725 · 1 comment · Opened Jan 3, 2025
Not defining USBCON broke since 1.8.14 Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

arduino/ArduinoCore-samd#723 · Opened Oct 30, 2024
Where does the formula of BAUD comes from in SERCOM::initMasterWIRE( uint32_t baudrate ) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/ArduinoCore-samd#719 · 1 comment · Opened Aug 13, 2024
Bootloader Make Issue Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#716 · Opened Jun 10, 2024
Alternate SERCOM I2C Not Working On Pins PA08 and PA09 (4 and 3) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#711 · 2 comments · Opened Oct 19, 2023
Possible race condition between Uart::write(data) and Uart::IrqHandler() ?? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/ArduinoCore-samd#708 · 4 comments · Opened Sep 23, 2023
Doxygen comments Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

arduino/ArduinoCore-samd#707 · Opened Jul 22, 2023
analogWrite() uses a threshold when writing to a digital port Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

arduino/ArduinoCore-samd#706 · Opened Jul 22, 2023
analogWrite() problems with PWM Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

arduino/ArduinoCore-samd#705 · Opened Jul 22, 2023
_writeResolution, set by analogWriteResolution(), is shared by the DAC and PWM Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

arduino/ArduinoCore-samd#704 · Opened Jul 22, 2023
Disabling DAC when reading from ADC is a problem sometimes Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

arduino/ArduinoCore-samd#703 · Opened Jul 22, 2023
Please implement setWireTimeout() in SAMD Wire library Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/ArduinoCore-samd#702 · Opened May 20, 2023
Error: unable to find CMSIS-DAP device Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

arduino/ArduinoCore-samd#701 · Opened Apr 21, 2023
Serial buffer size unchangeable Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

arduino/ArduinoCore-samd#700 · 3 comments · Opened Apr 2, 2023
Uploading new sketch after burning the mkrzero bootloader Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#699 · 1 comment · Opened Mar 21, 2023
SAMD SPI issues Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/ArduinoCore-samd#698 · Opened Mar 17, 2023
SFU Library not working for MKRNB1500 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#697 · Opened Mar 2, 2023
Cross-post: Increasing timing errors with rosserial Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

arduino/ArduinoCore-samd#694 · Opened Feb 7, 2023
is it possible to completley deinitialise usbhost Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

arduino/ArduinoCore-samd#690 · Opened Jan 11, 2023
variant/mkrnb1500 SARA R410 UART not configured to utilize flow control (RTS/CTS) Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

arduino/ArduinoCore-samd#689 · Opened Dec 25, 2022
USBCore SET_CONFIGURATION handler is not interrupt-safe Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/ArduinoCore-samd#688 · Opened Dec 4, 2022
Typo in startup.c comment Open

Difficulty 1/5 Under an hour Newbie friendliness 68/100

arduino/ArduinoCore-samd#685 · Opened Oct 14, 2022
SAMD21 micros() problem Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#684 · 5 comments · Opened Oct 14, 2022
I2S_RIGHT_JUSTIFIED_MODE has no output Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

arduino/ArduinoCore-samd#682 · Opened Oct 5, 2022
Udp.h included in ArduinoCore-samd and in ArduinoCore-API Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

arduino/ArduinoCore-samd#679 · 4 comments · Opened Aug 31, 2022
Serial Flush blocks forever but not only at programm start Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#678 · 1 comment · Opened Aug 31, 2022
SPIClass::usingInterrupt() interruptMask not set correcly Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

arduino/ArduinoCore-samd#677 · Opened Jul 8, 2022
SPI / SERCOM library sets SCK rate higher than maxSpeed specified in SPISetting Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

arduino/ArduinoCore-samd#675 · Opened Jul 2, 2022
Arduino hangs when reading from non-existent pins. Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

arduino/ArduinoCore-samd#674 · Opened Jun 25, 2022
Calibration method in CorrectADCResponse.ino seems inadequate Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

arduino/ArduinoCore-samd#671 · Opened May 12, 2022
ATSAMD21 is pulling ports low when calling wire.onRequest() Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

arduino/ArduinoCore-samd#670 · Opened May 11, 2022
Arduino Zero USB HID Broken and unusable Programing Port Open

waiting for feedback

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#663 · 15 comments · Opened Feb 10, 2022
User-hostile library names (SBU, SDU, SFU, SNU, SSU) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

arduino/ArduinoCore-samd#662 · 2 comments · Opened Feb 8, 2022
Error Writing into flash memory - Arduino Nano 33 IoT Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#660 · 2 comments · Opened Jan 16, 2022
Cant connect to NPE CABLE device using ver 1.8.10 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#647 · Opened Oct 4, 2021
SerialUSB.available() is hanging Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#643 · 1 comment · Opened Sep 10, 2021
Serial5 on Arduino M0 Pro no longer works on 1.8.11 Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

arduino/ArduinoCore-samd#640 · Opened Jul 17, 2021
-DCDC_DISABLED Error Open

Difficulty 1/5 Under an hour Newbie friendliness 45/100

arduino/ArduinoCore-samd#637 · 1 comment · Opened Jun 24, 2021
No such file or directory for openocd Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#635 · Opened Jun 18, 2021
No .sig Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

arduino/ArduinoCore-samd#634 · Opened Jun 16, 2021
Make SERCOM(0,1)_Handler optional Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

arduino/ArduinoCore-samd#631 · 6 comments · Opened May 21, 2021

arduino/ArduinoCore-samd

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