vxworks 下hdlc驱动程序，可以通过简单修改就能使用，采用的是scc接口，速度可以设置成2m,2.5m,6m等-Vxworks in HDLC driver, can use by simple modification, USES is SCC interface, the speed can be set to 2 m, 2.5 m, 6 m, etc

vxworks系统的MPC837x系列的驱动库，已在数据采集项目中对485、以太网等驱动进行了优化，特别优化了加载速度，对启动时间有要求的项目有参考意义。-vxworks system MPC837x series driver library, has been in the project for 485 data acquisition, Ethernet drivers have been optimized, in particular to optimize the loading