Reading +IPD response from serial.read() using Arduino UNO and ESP8266

Projects Programming
8

Robin2:
You need to post the exact program that you used.

Here is the code i used, i have add the code from your post in it as well:

#include <SoftwareSerial.h>

char a[100];
char cmd[100];
 
struct packet{
 char packet_type[15];
 char sensor_name[10];
 char payload[10];
 };

struct packet syn;

const byte numChars = 100;   
char receivedChars[numChars];
boolean newData = false;


SoftwareSerial esp (8,9);

void setup() {
  
 Serial.begin(9600);
 esp.begin(9600);
 
 
 esp.println("AT+CWJAP=\"SSID\",\"PASSWORD\"");   //i had used the actual ones here
 delay(5000);
 int i=0;
 char c[100];
 while (esp.available()>0) {
 c[i]= esp.read();
 Serial.write(c[i]);
 delay(10);
 i++;
 }
 
 esp.println("AT+CIPSTART=\"TCP\",\"192.168.8.100\",5555");
 delay(1000);
 i=0;
 c[100];
 while (esp.available()>0) {
 c[i]= esp.read();
 Serial.write(c[i]);
 delay(10);
 i++;
 }

 //Initiallizing the struct declared above
 strcpy(syn.packet_type,"syn");
 strcpy(syn.sensor_name,"temp");
 strcpy(syn.payload,"100.7");

 //Storing all the struct variables in one string to send it, i couldnt think of anyother way to do it for now
 strcpy(a,syn.packet_type);
 strcat(a,syn.sensor_name);
 strcat(a,syn.payload); 
 
 //len =sizeof(a);
 //Serial.print("len="+len);
 //strcpy(cmd,"AT+CIPSEND=");
 //strcat(cmd,len);

 esp.println("AT+CIPSEND=12");
 delay(2000);
 i=0;
 while (esp.available()>0) {
 c[i]= esp.read();
 Serial.write(c[i]);
 delay(10);
 i++;
 }

 esp.println(a);
 delay(1000);
 i=0;
 /*At this point after sending the string a to the server i get a response but the response gets terminated, i have written what happens in the question above  */
 recvWithStartEndMarkers();
 showNewData();
 /*while (esp.available()>0) {
 c[i]= esp.read();
 Serial.write(c[i]);
 delay(10);
 i++;
 }*/
}

 


void loop() {
//Here i am just sending arbritary data to the server for checking it
 esp.println("AT+CIPSEND=3");
 delay(1000);
 int i=0;
 char c[100];
 while (esp.available()>0) {
 c[i]= esp.read();
 Serial.write(c[i]);
 delay(10);
 i++;
 }
 esp.println("aab");
 delay(1000);
 
//again here i am supposed to get the serponce from the server but i recieve a truncated response after the +IPD from here

 i=0;
 while (esp.available()>0) {
 c[i]= esp.read();
 Serial.write(c[i]);
 delay(10);
 i++;
 }
 
 esp.println("AT+CIPSEND=3");
 delay(1000);
 i=0;
 while (esp.available()>0) {
 c[i]= esp.read();
 Serial.write(c[i]);
 delay(10);
 i++;
 }
 esp.println("bbb");
 delay(1000);
 i=0;
 //while (esp.available()>0) {
 //c[i]= esp.read();
 //Serial.write(c[i]);
 //delay(10);
 //i++;
 //}
 
  recvWithStartEndMarkers();
   showNewData();
}



void recvWithStartEndMarkers() {
    static boolean recvInProgress = false;
    static byte ndx = 0;
    char startMarker = '@';
    char endMarker = '!';
    char rc;
 
    while (Serial.available() > 0 && newData == false) {
        rc = Serial.read();

        if (recvInProgress == true) {
            if (rc != endMarker) {
                receivedChars[ndx] = rc;
                ndx++;
                if (ndx >= numChars) {
                    ndx = numChars - 1;
                }
            }
            else {
                receivedChars[ndx] = '\0'; // terminate the string
                recvInProgress = false;
                ndx = 0;
                newData = true;
            }
        }

        else if (rc == startMarker) {
            recvInProgress = true;
        }
    }
}

void showNewData() {
    if (newData == true) {
        Serial.print("This just in ... ");
        Serial.println(receivedChars);
        newData = false;
    }
}

Robin2:
Also, it is easier to help if you respond within (say) 24 hrs while your problem is still in my mind.

...R

I am sorry about that as well i had internet issues that why, i will keep that in mind next time.
Thank you for helping me out