Я с
https://sites.google.com/site/shaozi...al-bootloadere бутлоадер юзаю.
Main feature
•Support many types of AVR microcontrollers.
•Support AVR device with multi-uart.
•Support RS232/RS485/RS422 mode.
•Support customize communication baudrate and system clock frequcene.
•Automatically calculate the baudrate error.
•Write with AVR GCC, 100% C code.
•High optimized code, occupy small space.
•Cut out the function conveniently, and can meet different requirements.
•Support Watchdog.
•User may use the LED to show the upgrade status.
•Support to use super terminal as download software on PC.
•Support verification while write to FLASH.
•Can define the size of user program section.
•AES crypt routine (128/256 bits key)
...