这是一个MAG3110，测试程序在原来基础上做了改进，完善，使用STC单片机1T,测量的数据直接以字符串形式从串口打印，非常好的东西-This is a MAG3110, testing procedures based on the original improvements, improve STC microcontroller 1T measurement data directly from the serial port print string, very good things