Question

如何使用arduino和sim900模块打开网页我即将使用gsm sim 900模块打开一个网页我尝试使用这个代码我不熟悉AT命令所以这段代码只显示为对串口监视器中代码的响应而且它没有打开这个页面，你能帮我吗！

     #include <SoftwareSerial.h>
 SoftwareSerial SIM900(2, 3); // configure software serial port
void setup() {
 SIM900.begin(19200);
 SIM900power();  
Serial.begin(19200); 
Serial.print("power up" );
delay(20000); 
   SIM900.println("AT+CSQ"); // Signal quality check
delay(100);
  ShowSerialData();// this code is to show the data from gprs shield, in         order to easily see the process of how the gprs shield submit a http request, and the following is for this purpose too.
  SIM900.println("AT+CGATT?"); //Attach or Detach from GPRS Support
   delay(100);
 ShowSerialData();
 SIM900.println("AT+SAPBR=3,1,\"CONTYPE\",\"GPRS\"");//setting the SAPBR,       the connection type is using gprs
delay(1000);
ShowSerialData();
SIM900.println("AT+SAPBR=3,1,\"APN\",\"etisalat\"");//setting the APN, Access point name string
delay(4000)
  ShowSerialData();
 SIM900.println("AT+SAPBR=1,1");//setting the SAPBR
 delay(2000);
 ShowSerialData();
 SIM900.println("AT+HTTPINIT"); //init the HTTP request
 delay(2000); 
 ShowSerialData();           SIM900.println("AT+CIPSTART=\"TCP\",\"http://http://www.google.com\",\"80\""); 
  delay(1000);
ShowSerialData();
 SIM900.println("AT+CIPSHUT"); //init the HTTP request
delay(2000); 
ShowSerialData();
SIM900.println("AT+HTTPACTION=0");//submit the request 
delay(10000);//the delay is very important, the delay time is base on the return from the website, if the return datas are very large, the time required longer.
   while(!SIM900.available());
 ShowSerialData();
 SIM900.println("AT+HTTPREAD");// read the data from the website you access
 delay(300);
  ShowSerialData();
 SIM900.println("");
 delay(100);
   }
 void SIM900power()
  // software equivalent of pressing the GSM shield "power" button
  {
 digitalWrite(9, HIGH);
  delay(1000);
  }
  void loop()
     {
     // Serial.println("SubmitHttpRequest - started" );
   //  SubmitHttpRequest();
   // Serial.println("SubmitHttpRequest - finished" );
     }
 void SubmitHttpRequest()
   {
     }
  void ShowSerialData()
{
   while(SIM900.available()!=0)
   Serial.write(char (SIM900.read()));
  }

Answer 1

您能否发布您从此通讯中获得的SERIAL日志？

这是通过HTTP查询的正常设置：

检查网络中是否有注册

AT+CREG?

检查您是否已连接到网络

AT+CGATT?

设置承载配置文件1（看看它是否设置了有效的IP）

AT+SAPBR=3,1,"Contype","GPRS"
AT+SAPBR=3,1,"APN","APNdirection"
AT+SAPBR=3,1,"USER","APNuser"
AT+SAPBR=3,1,"PWD","APNpassword"
AT+SAPBR=2,1
AT+SAPBR=1,1

启动HTTP

AT+HTTPINIT

选择承载1

AT+HTTPPARA="CID",1

设置您要请求的网址

AT+HTTPPARA="URL","google.com"

启动GET操作

AT+HTTPACTION=0

完成后阅读

AT+HTTPREAD

终止HTTP

AT+HTTPTERM

使用sim900

1 个答案: