Serial communication between esp8266 and atmega328p - c++

Question

I have a web server running on the esp8266.
The code is here:
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266mDNS.h>
#include <ESP8266WebServer.h>
#include "index.h"
#include "login.h"
ESP8266WiFiMulti wifiMulti; // Create an instance of the ESP8266WiFiMulti class, called 'wifiMulti'
ESP8266WebServer server(80); // Create a webserver object that listens for HTTP request on port 80
void handleRoot(); // function prototypes for HTTP handlers
void handleLogin();
void handleNotFound();
void setup(void){
Serial.begin(115200); // Start the Serial communication to send messages to the computer
delay(100);
wifiMulti.addAP("DIGISOL", "edot2017"); // add Wi-Fi networks you want to connect to
Serial.println("Connecting ...");
while (wifiMulti.run() != WL_CONNECTED) { // Wait for the Wi-Fi to connect: scan for Wi-Fi networks, and connect to the strongest of the networks above
delay(250);
Serial.print('.');
}
Serial.println('\n');
Serial.print("Connected to ");
Serial.println(WiFi.SSID()); // Tell us what network we're connected to
Serial.print("IP address:\t");
Serial.println(WiFi.localIP()); // Send the IP address of the ESP8266 to the computer
server.on("/", HTTP_GET, handleRoot); // Call the 'handleRoot' function when a client requests URI "/"
server.on("/login", HTTP_POST, handleLogin); // Call the 'handleLogin' function when a POST request is made to URI "/login"
server.on("/back",HTTP_POST,handleRoot);
server.onNotFound(handleNotFound); // When a client requests an unknown URI (i.e. something other than "/"), call function "handleNotFound"
server.begin(); // Actually start the server
Serial.println("HTTP server started");
}
void loop(void){
server.handleClient(); // Listen for HTTP requests from clients
}
void handleRoot() { // When URI / is requested, send a web page
String indexPage = MAIN_page;
server.send(200, "text/html",indexPage);
}
void handleLogin() { // If a POST request is made to URI /login
String message = "";
if( ! server.hasArg("data") || server.arg("data") == NULL ){ // If the POST request doesn't have username and password data
server.send(400, "text/plain", "400: Invalid Request"); // The request is invalid, so send HTTP status 400
return;
}
else
{
message += server.arg("data"); //Get the name of the parameter
Serial.println(message);
String loginpage = LOGIN_PAGE;
server.send(200, "text/html",loginpage);
}
}
void handleNotFound(){
server.send(404, "text/plain", "404: Not found"); // Send HTTP status 404 (Not Found) when there's no handler for the URI in the request
}
Then I have a sketch to display a message on to the ledp10 display which is working fine.
ledp10 display message code:
#include <SPI.h>
#include <DMD2.h>
#include <fonts/SystemFont5x7.h>
#include <fonts/Arial14.h>
#include <fonts/Droid_Sans_24.h>
#include <fonts/Droid_Sans_16.h>
// Set Width to the number of displays wide you have
const int WIDTH = 1;
const int COUNTDOWN_FROM = 0;
int counter = COUNTDOWN_FROM;
// You can change to a smaller font (two lines) by commenting this line,
// and uncommenting the line after it:
const uint8_t *FONT = SystemFont5x7;
const uint8_t *FONT2 = SystemFont5x7;
const char *MESSAGE = "GOA";
SoftDMD dmd(WIDTH,1); // DMD controls the entire display
DMD_TextBox box(dmd, 0, 1);
DMD_TextBox box1(dmd,11,1); // "box" provides a text box to automatically write to/scroll the display
// the setup routine runs once when you press reset:
void setup() {
Serial.begin(9600);
dmd.setBrightness(255);
//dmd.selectFont(FONT);
dmd.begin();
}
// the loop routine runs over and over again forever:
void loop() {
dmd.selectFont(FONT);
box.print(counter);
dmd.selectFont(FONT2);
const char *next = MESSAGE;
while(*next) {
Serial.print(*next);
box1.print(*next);
delay(500);
next++;
}
box.println(F(""));
counter++;
if(counter == 60) {
dmd.clearScreen();
counter = 0;
}
}
Now I need to communicate between the esp8266 and atmega328p. I.e the message sent on the web page needs to be displayed on to the ledp10 display.
How should I do it?
Please help only in serial communication between esp8266 and atmega328p.

Answer 1

modify the lcd Atmega sketch to receive a text from Serial Monitor.
Then connect the esp8266 to Serial of Atmega and the Atmega sketch will receive the text you print to Serial in the esp sketch