基于51单片机和GSM，当GSM收到短信后作出设定的操作，但是这个程序有一个小buf，第一条短信必须由制定的手机发送，后面操作才正常，要是第一条短信由其他手机发送，则再由指定的手机操作则不灵。希望交流交流，一起解决这个小buf！-51 And based on GSM, the operation when set to receive a text message after GSM, but this program has a small buf, the first message to be sent by the development of mobile phones, behind only normal operation, if the first message from the other phone sent, then it is not working by the specified phone operation. I hope the exchange of exchanges, work together to solve this little buf!