串口发射和接收的驱动源代码，可以用rs232的驱动源代码-Send and receive the driver source code, serial rs232 driver source code can be used

51单片机串口通过AT指令控制GPRS发送接收短信，并显示在LCD上，包括显示和串口，AT指令的底层驱动-51 MCU GPRS AT commands via the serial port transmit and receive text messages, and displayed on the LCD, including display and serial, AT commands underlying driver

通用USB/串口短信猫通用驱动，里面有完成的例子，开发者有福了。-Universal USB/serial SMS cat generic driver, which has complete examples of developers blessed.