sim900 at httppara缺失字符

Question

我正在进行一个项目，我将两个变量发送到我的网站，我的网站将接收并显示它。

项目信息：Arduino SIM900 PHP(将数据发送到网站(

我的代码在命令上发送到我的SIM900并显示其答复。

我的问题是，当我在串行监视器中运行代码时，似乎URL上的最后一个引号未发送/打印到我的SIM900。

这是我的代码：

#include <SoftwareSerial.h>
SoftwareSerial GPRS(5, 6);
long duration;
int distance;
const int trigPin = 10;
const int echoPin = 11;
void setup() {
  powerUp();  
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  GPRS.begin(19200);
  Serial.begin(19200);
  Serial.println("Con");
  delay(2000);
  Serial.println("Done!...");
  GPRS.flush();
  Serial.flush();
  // See if the SIM900 is ready
  GPRS.println("AT");
  delay(1000);
  toSerial();
  GPRS.print("at+cmee=2r");
  toSerial();
  // SIM card inserted and unlocked?
  GPRS.println("AT+CPIN?");
  delay(1000);
  toSerial();
  // Is the SIM card registered?
  GPRS.println("AT+CREG?");
  delay(1000);
  toSerial();
  // Is GPRS attached?
  GPRS.println("AT+CGATT?");
  delay(1000);
  toSerial();
  // Check signal strength
  GPRS.println("AT+CSQ ");
  delay(1000);
  toSerial();
  // Set connection type to GPRS
  GPRS.println("AT+SAPBR=3,1,"Contype","GPRS"");
  delay(2000);
  toSerial();
  // Set the APN
  GPRS.println("AT+SAPBR=3,1,"APN","internet"");
  delay(2000);
  toSerial();
  // Enable GPRS
  GPRS.println("AT+SAPBR=1,1");
  delay(10000);
  toSerial();
  // Check to see if connection is correct and get your IP address
  GPRS.println("AT+SAPBR=2,1");
  delay(2000);
  toSerial();
}
void loop() {
  delay(10000);
  sensor();
  GPRS.println("AT+HTTPINITr");
  delay(1000);
  toSerial();
  GPRS.println("AT+HTTPPARA="CID",1r");
  delay(1000);
  toSerial();
  GPRS.println("AT+HTTPPARA="URL","aclc-onlineparkingtracker.000webhostapp.com/?id=1&sts=0r"); <--- HERE
  delay(10000);
  toSerial();
  GPRS.println("AT+HTTPACTION=0r");
  delay(7000);
  toSerial();
  GPRS.println("AT+HTTPTERMr");
  toSerial();
}
void toSerial() {
  while(GPRS.available()!=0) {
    Serial.write(GPRS.read());
  }
}
void powerUp() {
  pinMode(9, OUTPUT);
  digitalWrite(9, LOW);
  delay(1000);
  digitalWrite(9, HIGH);
  delay(2000);
  digitalWrite(9,LOW);
  delay(3000);
}

这是我的串行显示器中的输出：

Con
Done!...
AT
OK
at+cmee=2
AT+CPIN?
OK
AT+CREG?
+CREG: 0,1
OK
AT+CGATT?
+CGATT: 0
OK
AT+CSQ 
+CSQ: 10,0
OK
AT+SAPBR=3,1,"Contype","GPRS"
OK
AT+SAPBR=3,1,"APN","internet"
OK
AT+SAPBR=1,1
OK
AT+SAPBR=2,1
+SAPBR: 1,1,"10.32.133.18"
OK
AT+HTTPINIT

OK
AT+HTTPPARA="CID",1

OK
AT+HTTPPARA="URL","aclc-onlineparkingtracker.000webhostapp.com/?id=1&st=1 <--HERE

+CME ERROR: operation not allowed

我尝试的是：

• 更改TX＆amp;RX至256(SoftwareSerial.h和HardwareSerial.h(。不起作用。

• 添加了延迟。不起作用。

Answer 1

更新：

我更改了这一行：

GPRS.println("AT+HTTPPARA="URL","aclc-onlineparkingtracker.000webhostapp.com/?id=1&sts=0r");

to

GPRS.println("AT+HTTPPARA="URL","aclc-onlineparkingtracker.000webhostapp.com/?id=1&st=1"");

我删除了r，然后在URL的末尾添加了"。