GSM无响应

Question

我正在设计一个设备来控制温度和发送短信，如果它太高或太低。我使用arduino，DHT22传感器和DFrobot重力通用异步收发器A6 (GSM模块)。传感器工作正常，但我的GSM一直有问题，因为它停止响应。这是我使用的代码，它是来自DFRobot的标准代码示例：

#include <SoftwareSerial.h>
SoftwareSerial mySerial(11, 10);  // TX-Pin11, RX-Pin10
void updateSerial()
{
delay(2000);
while (Serial.available()) {
mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
}
while(mySerial.available()) {
Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
}
}
void setup()
{
Serial.begin(9600);
mySerial.begin(9600);
}

void loop()
{
mySerial.println("AT");          //Once the handshake test is successful, it will back to OK
updateSerial();

mySerial.println("AT+CSQ");      //Signal quality test, value range is 0-31, 31 is the best
updateSerial();

mySerial.println("AT+CCID");    //Read SIM information to confirm whether the SIM is plugged
updateSerial();

mySerial.println("AT+CREG?");    //Check whether it has registered in the network
updateSerial();

mySerial.println("AT+SNFS=0");  //Adjust to earphone mode(AT+SNFS=1 is microphone mode)
updateSerial();

mySerial.println("AT+CRSL=2");  //Adjust volume, volume range is 0-15, maximum:15
updateSerial();

while(1)
{
if(mySerial.available())
{
Serial.write(mySerial.read());   //Forward what Software Serial received to Serial Port
if(Serial.available())
{
  mySerial.write(Serial.read());  //Forward what Serial received to Software Serial Port
}
}
}
}

在结果中，我一直收到“？”。我不知道该怎么做了。我今天用oscyloskope检查了信号，一切正常。请帮助:)

Answer 1

因此，请确保调制解调器上的TX连接到主板上的11针，而RX连接到10针。

您不是遇到此问题的the first。