华为GSM modem GTM900B的驱动代码，基于ucOS操作系统，使用modem串口，应该在其他CPU上也能使用，本人用在philips的ARM片子上-Huawei GSM modem GTM900B driven code, based on ucOS operating system, Serial modem use, in other CPU should also use, I used philips films on the ARM

基于ucos的moden通讯 以及用到的at指令-UCOS moden-based communications as well as the use of the at command

MC52i-UCOS 驱动,UCOS中操作MC52i源代码-MC52i-UCOS Driver