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

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170 open issues indexed

Driver Install for Genuino Zero in 1.6.6 Open

arduino/ArduinoCore-samd#453 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Turn off USB functionnality / SerialUSB.end() not implemented Open

Component: USB Device question

arduino/ArduinoCore-samd#103 · 16 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
SERCOM + yield() ? Open

arduino/ArduinoCore-samd#108 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
util/crc16.h not defined in Arduino Zero Open

arduino/ArduinoCore-samd#118 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Serial1.available() returns wrong value Open

arduino/ArduinoCore-samd#139 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
External interruption not being triggered with CHANGE, RISING or FALLING while on standby (sleep) mode. Open

arduino/ArduinoCore-samd#142 · 19 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
SPI library does not limit the maximum SPI clock frequency as per the datasheet Open

Component: SPI improvement

arduino/ArduinoCore-samd#147 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SAMD outputs do not provide high drive current Open

arduino/ArduinoCore-samd#158 · 21 comments · 5 reactions · 0 assignees · Indexed Sep 14, 2026
issue with uploading sketch via programmer (sam-ice) Open

arduino/ArduinoCore-samd#164 · 13 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
SAMD and/or Arduino problems when analogWrite() digitalWrite() and servo library are combined Open

arduino/ArduinoCore-samd#176 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
I2S Library clocking improvements Open

arduino/ArduinoCore-samd#189 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Wire lib hangs when scanning i2c in Wire.endTransmission() Open

arduino/ArduinoCore-samd#194 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
What is the purpose of erasing in banzai() Open

improvement

arduino/ArduinoCore-samd#197 · 7 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Fail to upload to MKR1000 on Windows 7 Open

waiting for feedback

arduino/ArduinoCore-samd#198 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Cannot set UART to 300 baud Open

improvement

arduino/ArduinoCore-samd#208 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Should WString use memcpy not strcpy Open

arduino/ArduinoCore-samd#213 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
recover MKR1000 board automatically Open

arduino/ArduinoCore-samd#215 · 11 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Random hang at SERCOM.cpp:526 Open

bug Component: Wire

arduino/ArduinoCore-samd#222 · 14 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Change Wire slave mode to use auto ACK/NACK Open

arduino/ArduinoCore-samd#227 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Arduino Tian ADC sampling frequency configuration Open

arduino/ArduinoCore-samd#230 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SoftwareSerial examples for Arduino M0 will not compile Open

waiting for feedback

arduino/ArduinoCore-samd#234 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
UART Bootloader Open

arduino/ArduinoCore-samd#236 · 9 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Timeout to ensure no locking up of sketch if I2C communication fails Open

arduino/ArduinoCore-samd#251 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
SAMD21 products - Missing documentation Open

arduino/ArduinoCore-samd#255 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 14, 2026
RTC Drift & Reset Open

improvement

arduino/ArduinoCore-samd#256 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 14, 2026
compiler.c.elf.extra_flags is in the wrong place - precompiled libs, ldflags Open

arduino/ArduinoCore-samd#278 · 0 comments · 0 reactions · 1 assignee · Indexed Sep 14, 2026
Size of ring buffer limiting size of I2C (and other) messages Open

arduino/ArduinoCore-samd#285 · 5 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Arduino Zero, Atmel EDBG, and Atmel Studio 7 Open

arduino/ArduinoCore-samd#286 · 8 comments · 0 reactions · 2 assignees · Indexed Sep 14, 2026
DMA I2S callback not triggering at high frequency Open

arduino/ArduinoCore-samd#294 · 5 comments · 0 reactions · 2 assignees · Indexed Sep 14, 2026
How do I subclass TwoWire without creating the Wire instance(s)? Open

arduino/ArduinoCore-samd#296 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Online help and More info links in IDE Boards Manager not useful Open

arduino/ArduinoCore-samd#300 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
USBDeviceClass::send fails with payloads larger than 127 bytes. Open

arduino/ArduinoCore-samd#302 · 18 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
USBH_MIDI driver ported Open

arduino/ArduinoCore-samd#304 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
#include <algorithm> causes a compilation error when compiling for Arduino Due and SAMD Open

Component: Toolchain

arduino/ArduinoCore-samd#308 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Changes to attachInterrupt() prevent pin set-up with NULL callback pointer Open

bug Component: Core

arduino/ArduinoCore-samd#309 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
USBDeviceClass::sendStringDescriptor is not compliant with MSC specs Open

arduino/ArduinoCore-samd#311 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
compiler defaults to -signed-enums Open

arduino/ArduinoCore-samd#319 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 14, 2026
Low-power Sleep doesn’t work after programming - SAMD21 Open

question

arduino/ArduinoCore-samd#321 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Loss of arbitration not checked during I2C master read - code can hang here forever Open

bug Component: Wire

arduino/ArduinoCore-samd#322 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Building for chip variant? Open

question

arduino/ArduinoCore-samd#325 · 0 comments · 4 reactions · 0 assignees · Indexed Sep 14, 2026
Arduino Zero ADC Sample Time Too Long Open

arduino/ArduinoCore-samd#327 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 14, 2026
USBHost example to control CDC device Open

arduino/ArduinoCore-samd#328 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Consider adding a new pin mode NONE to reset mux state Open

arduino/ArduinoCore-samd#332 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 14, 2026
RawHID support Open

arduino/ArduinoCore-samd#339 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
attachInterrupt() should clear EIC INTFLAG or prior events will cause an interrupt Open

arduino/ArduinoCore-samd#348 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Speed up digitalWrite() and etc by using PORT_IOBUS Open

arduino/ArduinoCore-samd#354 · 0 comments · 3 reactions · 1 assignee · Indexed Sep 14, 2026
Problems related to USB device support Open

arduino/ArduinoCore-samd#366 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Have to use SerialUSB on M0 to print to Serial Monitor, but variant.h says otherwise Open

bug

arduino/ArduinoCore-samd#368 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026
I want to enable it for value number o to 99 Open

waiting for feedback

arduino/ArduinoCore-samd#370 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 14, 2026
Refactor to use digitalPinToXXX macros most places... Open

arduino/ArduinoCore-samd#382 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 14, 2026

arduino/ArduinoCore-samd

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