A tinyusb based project implementing the bootloader for Uno R4 and Portenta C33
An implementation of a ANT driver for Arduino, Mbed and ESP-IDF
An arduino core for ARM based BLE devices supported by the NimBLE stack.
avrdude build scripts for Arduino/Genuino
ATtiny85/45/25 I2C bootloader
An unfinished TFTP bootloader for Arduino Ethernet
Arduino library for TinyUSB
TFTP Bootloader for the Arduino Ethernet Board
Arduino hardware package for ATmega8, ATmega48, ATmega88, ATmega168, ATmega328 and ATmega328PB
Arduino Core for the ATMEGA4809 CPU
Minimal example setup with ESP32-C3 and PIO