请教两个Arduino通过HC-05蓝牙模块通信

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把hc 05的key引脚置高电位就进入命令模式，给个例程：/*AUTHOR: Hazim Bitar (techbitar)DATE: Aug 29, 2013LICENSE: Public domain (use at your own risk)CONTACT: techbitar at gmail dot (techbitar.)*/#include SoftwareSerial BTSerial(10, 11); // RX | TXvoid setup(){pinMode(9, OUTPUT); // this pin will pull the HC-05 pin 34 (key pin) HIGH to switch module to AT modedigitalWrite(9, HIGH);Serial.begin(9600);Serial.println("Enter AT mands:");BTSerial.begin(38400); // HC-05 default speed in AT mand more}void loop(){// Keep reading from HC-05 and send to Arduino Serial Monitorif (BTSerial.available())Serial.write(BTSerial.read());// Keep reading from Arduino Serial Monitor and send to HC-05if (Serial.available())BTSerial.write(Serial.read());}