说明：  OBD II 汽车故障诊断之J1939源代码，适用于PIC18系列单片机，稍作改动可用于其它类型单片机
(Module Features • Supports user-defined setup of CAN and ECAN parameters like baud rate, maximum message size, number of reception/transmission buffers. • Incorporates interrupt-driven transmission and reception capabilities, allowing users to run other tasks in the foreground. • Simple function based Interface, which enables easy read, write and communications management. • Supports for PIC18 family devices containing both CAN and ECAN modules.)