说明：  这是一个控制华为GPRS模块GTM900B的驱动程序，它是基于uCOS-II操作系统，在LPC2000系列处理器上编写的，利用该驱动程序很容易通过串口控制GTM900B。
(This is a control module GTM900B Huawei GPRS driver, which is based on uCOS-II operating system, LPC2000 series processors at up to prepare and use the driver can easily control through serial GTM900B.)