实现AVR M8单片机的TWIC三机多主通信,一号机,可以改动,能实现128个形成多主机模式通信,已测试,与下面发上来的M8_SLAVE2/3组成三机通信 -TWIC implementation microcontroller AVR M8 three-machine multi-master communication, One machine can be changed, to achieve 128 form a multi-host mode communications, has