关于部分AT指令发送和返回的值，包括PDU格式，对编程或许有帮助。返回为ASCII码。-On the part of AT commands to send and return value, including the PDU format of programming may be helpful. Return for the ASCII code.

实现汉字串向Unicode ASCII码转换 Unicode 向汉字串的转换-Realized characters to Unicode ASCII code string conversion Character strings to Unicode conversion