使用AVR单片机实现USB下载功能,使用了USBlib-AVR MCU using the USB download function, the use of the USBlib

AVR USBasp programer

usbasp.固件，驱动，更新于2009年(USBasp is a USB in-circuit programmer for Atmel AVR controllers. It simply consists of an ATMega88 or an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver, no special USB controller is ne