ESP8266 / Mbed 2 deprecated ESP8266_HTTP_HelloWorld

HTTP Client with ESP8266 working example

Dependencies:   ESP8266Interface HTTPClient-SSL WebSocketClient mbed-rtos mbed

Fork of ESP8266_WebSockets_HelloWorld by ESP8266

This repository has been superceded

This project has moved to https://developer.mbed.org/teams/ESP8266/code/mbed-os-example-esp8266/

Introduction

This is a basic Hello World program for interfacing the ESP8266 chip with HTTP. It will execute a GET on httpbin.org/get, and a POST to httpbin.org/post.

ESP8266_HTTP_HelloWorld

  1. change ssid and passphrase to match your wifi connection
  2. Initialize ESP8266 with DHCP enabled
  3. Get mbed.org
    1. Print the information retrieved
  4. Post to httbin.org
    1. Print the information retrieved

You can view the information retrieved through a serial terminal set to 9600 baud.

Successful Execution

you should see something like the following on the terminal if the program successfully executes. /media/uploads/mbedAustin/httpclient.png

main.cpp@4:d02fdd139307, 2015-04-29 (annotated)

Committer:
mbedAustin
Date:
Wed Apr 29 22:43:10 2015 +0000
Revision:
4:d02fdd139307
Parent:
3:5175e53017e4
Child:
6:9ca92d1d90dd
safety save

Who changed what in which revision?

UserRevisionLine numberNew contents of line
michaeljkoster 0:6a891da014a3 1 #include "mbed.h"
mbedAustin 3:5175e53017e4 2 #define DEBUG 1
michaeljkoster 0:6a891da014a3 3 #include "ESP8266Interface.h"
michaeljkoster 0:6a891da014a3 4 #include "UDPSocket.h"
michaeljkoster 0:6a891da014a3 5 #include "Endpoint.h"
michaeljkoster 0:6a891da014a3 6
mbedAustin 3:5175e53017e4 7 RawSerial pc(USBTX, USBRX); // tx, rx
mbedAustin 3:5175e53017e4 8 ESP8266Interface wifi(D1,D0,D10,"demossid","password",115200); // TX,RX,Reset,SSID,Password
michaeljkoster 0:6a891da014a3 9
michaeljkoster 0:6a891da014a3 10 UDPSocket server;
michaeljkoster 0:6a891da014a3 11 bool UDP_blocking = false;
michaeljkoster 0:6a891da014a3 12 unsigned int UDP_timeout = 100;
michaeljkoster 0:6a891da014a3 13
michaeljkoster 0:6a891da014a3 14
michaeljkoster 0:6a891da014a3 15 int main()
michaeljkoster 0:6a891da014a3 16 {
mbedAustin 3:5175e53017e4 17 pc.baud(115200);
mbedAustin 3:5175e53017e4 18 int check = 0;
mbedAustin 3:5175e53017e4 19 pc.printf("\n\rSystemCoreClock=: %d", SystemCoreClock / 1000000) ;
mbedAustin 3:5175e53017e4 20
mbedAustin 3:5175e53017e4 21 // Init ESP8266
mbedAustin 3:5175e53017e4 22 pc.printf("\r\nwifi.init: ");
mbedAustin 3:5175e53017e4 23 check = wifi.init(); // initialize the interface, reset the module
mbedAustin 3:5175e53017e4 24 pc.printf("%d",check);
mbedAustin 3:5175e53017e4 25
mbedAustin 3:5175e53017e4 26 // Initialize Socket
mbedAustin 3:5175e53017e4 27 pc.printf("\r\nwifi.connect: ");
mbedAustin 3:5175e53017e4 28 check = wifi.connect(); // join AP and get DHCP settings
mbedAustin 3:5175e53017e4 29 pc.printf("%d",check);
mbedAustin 3:5175e53017e4 30
mbedAustin 3:5175e53017e4 31 // printf("\r\nsocket init: ");
mbedAustin 3:5175e53017e4 32 // check = server.init();
mbedAustin 3:5175e53017e4 33 // printf("%d",check);
mbedAustin 3:5175e53017e4 34 //
mbedAustin 3:5175e53017e4 35 // printf("\r\nsocket bind: ");
mbedAustin 3:5175e53017e4 36 // check = server.bind(0);
mbedAustin 3:5175e53017e4 37 // printf("%d",check);
mbedAustin 3:5175e53017e4 38 //
mbedAustin 3:5175e53017e4 39 // printf("\r\nset blocking option");
mbedAustin 3:5175e53017e4 40 // server.set_blocking(UDP_blocking, UDP_timeout);
mbedAustin 3:5175e53017e4 41
mbedAustin 4:d02fdd139307 42 if(wifi.is_connected()) {
mbedAustin 4:d02fdd139307 43 pc.printf("\r\nConnected to Wifi!\r\n");
mbedAustin 4:d02fdd139307 44 } else {
mbedAustin 4:d02fdd139307 45 pc.printf("\r\nFailed to Connect to Wifi...\r\n");
mbedAustin 4:d02fdd139307 46 }
mbedAustin 3:5175e53017e4 47
mbedAustin 4:d02fdd139307 48 pc.printf("\n\rIP = %s \n\r",wifi.getIPAddress());
mbedAustin 4:d02fdd139307 49
mbedAustin 4:d02fdd139307 50 pc.printf("\r\n#####Starting Interactive Terminal:#####\r\n");
mbedAustin 3:5175e53017e4 51 while(1) {
mbedAustin 3:5175e53017e4 52 if(pc.readable()) {
mbedAustin 3:5175e53017e4 53 char c = pc.getc();
mbedAustin 3:5175e53017e4 54 wifi.putc(c);
mbedAustin 3:5175e53017e4 55 }
mbedAustin 3:5175e53017e4 56 if(wifi.readable()) {
mbedAustin 3:5175e53017e4 57 char c = wifi.getc();
mbedAustin 3:5175e53017e4 58 pc.putc(c);
mbedAustin 3:5175e53017e4 59 }
mbedAustin 3:5175e53017e4 60 }
michaeljkoster 0:6a891da014a3 61 }