spencekonde/dxcore

How spencekonde/dxcore works

DxCore is an Arduino core for Microchip AVR DA, DB, DD, EA, EB, and DU microcontrollers. The principal workflow is an Arduino sketch using the core’s API and device-specific pin/peripheral definitions to interact with MCU hardware. The repository also supplies optional peripheral libraries and Optiboot bootloaders. The README documents broad device and hardware support; sampled evidence is strongest for core headers, timer configuration, and selected library interfaces, so unsampled implementation links are omitted.

Main entry points: Arduino.h Arduino API · Print.h Print and Stream · pins_arduino.h Board Pin Mapping · timers.h Timer Support

Components 20

Arduino Core

Core Runtime megaavr/cores/dxcore/main.cpp
Arduino API megaavr/cores/dxcore/Arduino.h
Print and Stream megaavr/cores/dxcore/api/Print.h
String Types megaavr/cores/dxcore/api/String.h
Printable Types megaavr/cores/dxcore/api/Printable.h

Device Hardware

Device Definitions megaavr/cores/dxcore/core_devices.h
Board Pin Mapping megaavr/variants/14pin-ddseries/pins_arduino.h
Timer Pin Mapping megaavr/cores/dxcore/device_timer_pins.h
Timer Support megaavr/cores/dxcore/timers.h
UART Configuration megaavr/cores/dxcore/UART_constants.h

Peripheral Libraries

Event System megaavr/libraries/Event/src/Event.cpp
Comparator megaavr/libraries/Comparator/src/Comparator.cpp
Configurable Logic megaavr/libraries/Logic/src/Logic.cpp
I2C Wire megaavr/libraries/Wire/src/Wire.cpp
SPI megaavr/libraries/SPI/src/SPI.cpp
SD Storage megaavr/libraries/SD/src/SD.cpp
Flash Access megaavr/libraries/Flash/src/Flash.cpp

Bootloaders

Optiboot megaavr/bootloaders/optiboot_dx/optiboot_dx.c
Dx Optiboot Variant megaavr/bootloaders/optiboot_dex/optiboot_dx.c

Other components

Arduino Sketch

Connections 10

Arduino Sketch → Arduino API: uses API
Arduino API → Device Definitions: includes definitions megaavr/cores/dxcore/Arduino.h
Arduino API → Timer Pin Mapping: includes mapping megaavr/cores/dxcore/Arduino.h
Arduino API → UART Configuration: includes settings megaavr/cores/dxcore/Arduino.h
Arduino API → Board Pin Mapping: includes pin map megaavr/cores/dxcore/Arduino.h
Print and Stream → String Types: uses types megaavr/cores/dxcore/api/Print.h
Print and Stream → Printable Types: uses types megaavr/cores/dxcore/api/Print.h
Timer Support → Device Definitions: uses parameters megaavr/cores/dxcore/timers.h
Board Pin Mapping → Timer Support: references timers
I2C Wire → Arduino API: includes core megaavr/libraries/Wire/src/Wire.cpp

Drawn by GitDiagram on November 11, 2026 from the repository's file tree, README and source files. Read as Markdown ·