网上竟然没有一个汽车诊断协议kwp2000的实现。本人写了一个kwp2000-3(数据链路层)的实现，希望对开发汽车诊断协议的人员有帮助。-Online there is not even a car diagnostic protocol kwp2000 implementation. I wrote a kwp2000-3 (data link layer) the realization of the hope that an agreement on the development of