Introduction - If you have any usage issues, please Google them yourself
This program is a small communication program AVR microcontroller (other microcontroller initialization as long as you can change it), with the ICC after decompression software to open the project can be compiled, use the RS232 and RS485 two kinds of means of communication, two serial ports, RS485 to go 9-bit data bits. A very small system program, only the three C files and an H header files. Very suitable for school students and the beginning of the actual design of the new contacts.