读取P口状态，执行对应的语音程序，并通过485上传数据，ISD1760,modbus，rtu模式。 内含原理图，软件编译器是周立功的-Read the P-port status, perform the corresponding speech program, and upload data through 485, ISD1760, modbus, rtu model. Includes schematics, software compiler weeks meritorious