Wince 5.0下ST16C2552扩展串口驱动，采用两个gpio做中断。独立开发所使用的环境是au1200+MIPS，可根据需要进行平台移植。-ST16C2552 expansion under Wince 5.0 serial driver, so the use of two GPIO interrupt. Independent development environment is used au1200+ MIPS, according to the need for transpl