将数据从SIM800发送到服务器

Question

有人能帮我吗？

我在将数据从SIM800C发送到网站时遇到了问题。

第一个问题是，我将以下代码上传到Arduino (我使用Arduino IDE中的Serial向SIM800发送AT命令并读取响应)。

#include <SoftwareSerial.h>

#define TX 10
#define RX 11
#define t 2000

SoftwareSerial mySerial(RX, TX);
int k=0, aS=0, amS=0;

void setup() {
  Serial.begin(9600);
  while(!Serial); // Wait for Serial ready
  Serial.println("Intalizing...");
  mySerial.begin(9600);
  delay(5000);
  mySerial.println("AT"); // Send the first AT command to auto set baud rate
  delay(1000);
  Serial.println("You can type AT command and send to SIM800 by using Serial Monitor");
}

void loop() {
  k=0;
  aS=Serial.available();  // aS: The number of bytes available to read from the buff of Serial
  amS=mySerial.available(); // amS: The number of bytes available to read from the buff of mySerial
  while(aS>0) {
    mySerial.write(Serial.read());
    k=1; aS--;
  }
  if (k==1) {
    mySerial.println();
  }
  while (amS>0) {
    Serial.write(mySerial.read());
    k=2; amS--;
  }
  delay(1000);
}

Next，我一个接一个地发送AT命令并查看响应。所有AT命令和响应都可以在串行监视器上看到。

AT+SAPBR=3,1,"Contype","GPRS"
AT+SAPBR=3,1,"APN","m3-world"
AT+SAPBR=3,1,"USER","mms"
AT+SAPBR=3,1,"PWD","mms"
AT+CSTT="m3-world","mms","mms"
AT+SAPBR=1,1
AT+HTTPINIT
AT+HTTPPARA="CID",1
AT+HTTPPARA="URL","http://weatherstation.byethost3.com/"
AT+HTTPDATA=9,10000
value=YOU
AT+HTTPACTION=1

下面的最后一个响应显示数据(value=YOU)已成功发送。

OK
++HTTPACTION:1,200,839

我创建了网站来使用GET方法读取数据。我的问题是网站上没有什么变化。这意味着该网站尚未读取从SIM800发送的数据。

Answer 1

您的示例是发送一个POST请求。如果您想发送一个具有名称/值对的GET请求，那么它的结构应该有点不同。从上面更改您的示例：

AT+SAPBR=3,1,"CONTYPE","GPRS"
AT+SAPBR=3,1,"APN","m3-world"
AT+SAPBR=3,1,"USER","mms"
AT+SAPBR=3,1,"PWD","mms"
AT+SAPBR=1,1
AT+HTTPINIT
AT+HTTPPARA="CID",1
AT+HTTPPARA="URL","http://weatherstation.byethost3.com/?value=YOU"
AT+HTTPACTION=0

注意，名称/值对现在在URL中，AT+HTTPACTION=1改为AT+HTTPACTION=0，以指示GET而不是POST