GSM MCU 开发板，源代码，收发短信。-GSM MCU development board, source code, send and receive text messages.

ATMEL ATmega - a GSM Modem or Mobile/Cell- Phone/Handy (ME) that supports AT-commands on a serial bus and the SMS PDU-Mode according to standard GSM 07.05 - connection between serial ports, RS232 V24 level shifter for configuration,