![](/media/cache/group/ESP01v0.jpg.50x50_q85.jpg)
HTTP Client with ESP8266 working example
Dependencies: ESP8266Interface HTTPClient-SSL WebSocketClient mbed-rtos mbed
Fork of ESP8266_WebSockets_HelloWorld by
This repository has been superceded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
- change ssid and passphrase to match your wifi connection
- Initialize ESP8266 with DHCP enabled
- Get mbed.org
- Print the information retrieved
- Post to httbin.org
- 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.
Diff: main.cpp
- Revision:
- 12:978788c2156c
- Parent:
- 9:91fe783e1dd4
- Child:
- 13:5f2bb0dc134b
diff -r 8acce2b8af6e -r 978788c2156c main.cpp --- a/main.cpp Fri May 01 18:29:45 2015 +0000 +++ b/main.cpp Wed Jun 03 18:47:14 2015 +0000 @@ -1,34 +1,44 @@ #include "mbed.h" #include "ESP8266Interface.h" #include "TCPSocketConnection.h" - -const char* ECHO_SERVER_ADDRESS = "192.168.2.4"; -const int ECHO_SERVER_PORT = 8080; -ESP8266Interface wifi(D1,D0,D10,"demossid","password",115200); // TX,RX,Reset,SSID,Password +#include "TCPSocketServer.h" +#include "Websocket.h" + + + +ESP8266Interface wifi(D1,D0,D10,"demossid","password",115200); // TX,RX,Reset,SSID,Password,Baud RawSerial pc(USBTX, USBRX); // tx, rx int main() { pc.baud(115200); - wifi.init(); //Use DHCP - wifi.connect(); + wifi.init(); //Reset + wifi.connect(); //Use DHCP pc.printf("IP Address is %s\n", wifi.getIPAddress()); - TCPSocketConnection socket; - while (socket.connect(ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT) < 0) { - pc.printf("Unable to connect to (%s) on port (%d)\n", ECHO_SERVER_ADDRESS, ECHO_SERVER_PORT); - wait(1); - } + Websocket ws("ws://192.168.1.20:8888/ws"); - char hello[] = "Hello World\n"; - socket.send_all(hello, sizeof(hello) - 1); - - char buf[256]; - int n = socket.receive(buf, 256); - buf[n] = '\0'; - pc.printf("%s", buf); - - socket.close(); - wifi.disconnect(); + //Check for successful socket connection + if(!ws.connect()) + ws.close(); + else{ + char str[100]; + + for(int i=0; i<0x7fffffff; ++i) { + // string with a message + sprintf(str, "%d WebSocket Hello World over Ethernet", i); + ws.send(str); + + // clear the buffer and wait a sec... + memset(str, 0, 100); + wait(0.5f); + + // websocket server should echo whatever we sent it + if (ws.read(str)) { + pc.printf("rcv'd: %s\n", str); + } + } + } + ws.close(); while(true) {} }