HTTP POST Json SIM800 AT Command

Projects Programming
1

Anyone can help me? why my code not success sent data, and why cannot show anything in serial monitor? i need feedback from server show in serial monitor

#include <SoftwareSerial.h>
SoftwareSerial SIM800L(19,18);                //Serial SIM800L pin
String apn = "internet"; 
const char server[]   = "marda-indra.com";//"10.31.71.8";
const char resource[] = "/smart-fisheries/api/Ukur/createData"; 
void setup(){
  Serial.begin(115200); 
  SIM800L.begin(9600);      
  Serial.println("SIM800L GPRS Test");
  delay(2000);
}
 
void loop(){
  SetupModule();
  SIM800L.println("AT+CIPSTART=\"TCP\",\"marda-indra.com\",443");
  String jsonD = "{\"auth\":\"ALATPLN8BE1C54B38C60AA5F96C8C04AD907D4F75DF887\",\"key\":\"SMARTFISHERIES412131\",\"idAlat\":\"0001s\",\"tgl\":\"2021-12-23\",\"tglTime\":\"2021-12-23 12:01:00\",\"jam\":\"12:00\",\"latitude\":\"1.124208\",\"longitude\":\"104.023499\",\"ph\":\"2.01\",\"salinitas\":\"2\",\"dissolvedOxygen\":\"5\",\"suhu\":\"3\",\"ketinggianAir\":\"1.1\",\"pln\":\"true\",\"keterangan\":\"test\"}";
  unsigned int l=jsonD.length();
  SIM800L.print("AT+CIPSEND");
  SIM800L.print(String("POST ") + resource + " HTTP/1.1\r\n");
  SIM800L.print(String("Host: ") + server + "\r\n");
  SIM800L.println("Content-Type: application/json");
  SIM800L.print("Content-Length: ");
  SIM800L.println(l);
  SIM800L.println();
  SIM800L.println(String(jsonD));
  while(SIM800L.available()!=0){
    Serial.write(SIM800L.read());
  }
  SIM800L.println("AT+CIPSHUT");//close the connection
  delay(500); 
  jsonD ="";
  delay(5000); //add 10s for 60s total delay looping 
} 
void SetupModule(){  
  if (SIM800L.available())Serial.write(SIM800L.read());
  SIM800L.println("AT"); delay(1000);
  SIM800L.println("AT+CPIN?"); delay(1000);
  SIM800L.println("AT+CREG?"); delay(1000);
  SIM800L.println("AT+CGATT?"); delay(1000);
  SIM800L.println("AT+CIPSHUT");delay(1000);
  SIM800L.println("AT+CIPSTATUS"); delay(2000);
  SIM800L.println("AT+CIPMUX=0");  delay(2000);
  SIM800L.println("AT+CSTT=\""+apn+"\"");delay(1000);
  SIM800L.println("AT+CIICR");    delay(2000);
  SIM800L.println("AT+CIFSR");    delay(2000);
  SIM800L.println("AT+CIPSPRT=0");delay(2000);
}
2

It looks like you are trying to do HTTPS with TCP???? That is not how you typically post something to a website. Read this: https://www.aeq-web.com/sim800-gprs-http-post-get-request-at-commands/?lang=en

3

solved!! thank you very much :grinning: