![](/media/cache/group/ESP01v0.jpg.50x50_q85.jpg)
ESP8266 web sockets
Dependencies: ESP8266Interface WebSocketClient mbed
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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 websockets. It will connect and send a message to this web socket server location: 192.168.1.20 : 8888.
You can find the python server code here.
ESP8266_WebSockets_HelloWorld
- Initiliaze ESP8266 with DHCP enabled
- Create a socketed connection with the above server
- It will send this message "n WebSocket Hello World over wifi", where n is the number of times it has sent.
- Websocket server echoes the string sent (backwards)
You can view the debug messages of this program by using a serial terminal set to 115200 baud.
Diff: main.cpp
- Revision:
- 6:9ca92d1d90dd
- Parent:
- 4:d02fdd139307
- Child:
- 7:d2c97b20d237
diff -r c8d53f48a975 -r 9ca92d1d90dd main.cpp --- a/main.cpp Thu Apr 30 04:53:26 2015 +0000 +++ b/main.cpp Thu Apr 30 19:07:47 2015 +0000 @@ -1,15 +1,16 @@ #include "mbed.h" #define DEBUG 1 #include "ESP8266Interface.h" -#include "UDPSocket.h" +//#include "UDPSocket.h" +#include "TCPSocketConnection.h" #include "Endpoint.h" RawSerial pc(USBTX, USBRX); // tx, rx ESP8266Interface wifi(D1,D0,D10,"demossid","password",115200); // TX,RX,Reset,SSID,Password -UDPSocket server; -bool UDP_blocking = false; -unsigned int UDP_timeout = 100; +TCPSocketConnection tcp; +//bool UDP_blocking = false; +//unsigned int UDP_timeout = 100; int main() @@ -39,14 +40,30 @@ // printf("\r\nset blocking option"); // server.set_blocking(UDP_blocking, UDP_timeout); - if(wifi.is_connected()) { - pc.printf("\r\nConnected to Wifi!\r\n"); - } else { - pc.printf("\r\nFailed to Connect to Wifi...\r\n"); + check = tcp.connect("192.168.2.4",8080); + printf("\r\tcp.connect() result is: %d \r\n",check); + + char testString[] = "Hello There!!"; + // check = tcp.send((char *)testString, sizeof(testString)); +// printf("\r\tcp.send() result is : %d",check); + +// if(wifi.is_connected()) { +// pc.printf("\r\nConnected to Wifi!\r\n"); +// } else { +// pc.printf("\r\nFailed to Connect to Wifi...\r\n"); +// } + + //pc.printf("\n\rIP = %s \n\r",wifi.getIPAddress()); + + char receiveString[30] = {0}; + while(1) { + check = tcp.send((char *)testString, sizeof(testString)); + check = tcp.receive(receiveString,sizeof(receiveString)); + for(int x =0; x<check; x++) { + pc.putc(receiveString[x]); + } } - pc.printf("\n\rIP = %s \n\r",wifi.getIPAddress()); - pc.printf("\r\n#####Starting Interactive Terminal:#####\r\n"); while(1) { if(pc.readable()) {