ESP8266 / ESP8266Interface

ESP8266 Socket Library. AT Thinker firmware.

Dependents:   ESP8266_MQTT_HelloWorld ESP8266_IFTTT_Test ECE_4180_Lab_4 websocketmbed ... more

Fork of ESP8266Interface by ESP8266

This repository has been superceded

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

This library works with the AT Thinker firmware.

Note

This library is currently in Beta. It is not feature complete and has some bugs, proceed with caution! Fixes and patches are welcome and appreciated!

Currently the ESP8266Interface Library has the following Abilities:

Working

  • TCP Client
  • UDP Client
  • Transparent mode (single connection of 1 type at a time)
  • Station Mode (connects to AP)

To be implemented

  • TCP Server
  • UDP Server
  • Multi Connection Mode (able to have up to 5 sockets at a time)
  • AP Mode (Make ESP Chip act like access point)
  • DNS Support (currently websites must be looked up by IP)
  • Error Recovery

Nice but not necessary

  • colorized text for ESP AT Commands in Command line (easier to differentiate from other text)

Socket/TCPSocketServer.cpp@4:0bcec6272784, 2012-12-20 (annotated)

Committer:
samux
Date:
Thu Dec 20 15:08:58 2012 +0000
Revision:
4:0bcec6272784
Parent:
3:9aa05e19c62e 
proper join after reboot - increase size flush

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:fb4494783863 1 /* Copyright (C) 2012 mbed.org, MIT License
samux 1:fb4494783863 2 *
samux 1:fb4494783863 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:fb4494783863 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
samux 1:fb4494783863 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
samux 1:fb4494783863 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
samux 1:fb4494783863 7 * furnished to do so, subject to the following conditions:
samux 1:fb4494783863 8 *
samux 1:fb4494783863 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:fb4494783863 10 * substantial portions of the Software.
samux 1:fb4494783863 11 *
samux 1:fb4494783863 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:fb4494783863 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:fb4494783863 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:fb4494783863 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:fb4494783863 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:fb4494783863 17 */
samux 1:fb4494783863 18
samux 1:fb4494783863 19 #include "TCPSocketServer.h"
samux 1:fb4494783863 20 #include <string>
samux 1:fb4494783863 21
samux 1:fb4494783863 22 TCPSocketServer::TCPSocketServer() {}
samux 1:fb4494783863 23
samux 1:fb4494783863 24 // Server initialization
samux 1:fb4494783863 25 int TCPSocketServer::bind(int port) {
samux 1:fb4494783863 26 char cmd[20];
samux 1:fb4494783863 27
samux 1:fb4494783863 28 // set TCP protocol
samux 1:fb4494783863 29 wifi->setProtocol(TCP);
samux 1:fb4494783863 30
samux 1:fb4494783863 31 // set local port
samux 1:fb4494783863 32 sprintf(cmd, "set i l %d\r", port);
samux 1:fb4494783863 33 if (!wifi->sendCommand(cmd, "AOK"))
samux 1:fb4494783863 34 return -1;
samux 3:9aa05e19c62e 35
samux 3:9aa05e19c62e 36 // save
samux 3:9aa05e19c62e 37 if (!wifi->sendCommand("save\r", "Stor"))
samux 3:9aa05e19c62e 38 return -1;
samux 3:9aa05e19c62e 39
samux 3:9aa05e19c62e 40 // reboot
samux 3:9aa05e19c62e 41 wifi->reboot();
samux 3:9aa05e19c62e 42
samux 3:9aa05e19c62e 43 // connect the network
samux 4:0bcec6272784 44 if (wifi->isDHCP()) {
samux 4:0bcec6272784 45 if (!wifi->sendCommand("join\r", "DHCP=ON", NULL, 10000))
samux 4:0bcec6272784 46 return -1;
samux 4:0bcec6272784 47 } else {
samux 4:0bcec6272784 48 if (!wifi->sendCommand("join\r", "Associated", NULL, 10000))
samux 4:0bcec6272784 49 return -1;
samux 4:0bcec6272784 50 }
samux 1:fb4494783863 51
samux 3:9aa05e19c62e 52 // exit
samux 1:fb4494783863 53 wifi->exit();
samux 3:9aa05e19c62e 54
samux 3:9aa05e19c62e 55 wait(0.2);
samux 3:9aa05e19c62e 56 wifi->flush();
samux 1:fb4494783863 57 return 0;
samux 1:fb4494783863 58 }
samux 1:fb4494783863 59
samux 1:fb4494783863 60 int TCPSocketServer::listen(int backlog) {
samux 1:fb4494783863 61 if (backlog != 1)
samux 1:fb4494783863 62 return -1;
samux 1:fb4494783863 63 return 0;
samux 1:fb4494783863 64 }
samux 1:fb4494783863 65
samux 1:fb4494783863 66
samux 1:fb4494783863 67 int TCPSocketServer::accept(TCPSocketConnection& connection) {
samux 1:fb4494783863 68 int nb_available = 0, pos = 0;
samux 1:fb4494783863 69 char c;
samux 1:fb4494783863 70 string str;
samux 1:fb4494783863 71 bool o_find = false;
samux 1:fb4494783863 72 while (1) {
samux 1:fb4494783863 73 while(!wifi->readable());
samux 1:fb4494783863 74 nb_available = wifi->readable();
samux 1:fb4494783863 75 for (int i = 0; i < nb_available; i++) {
samux 1:fb4494783863 76 c = wifi->getc();
samux 1:fb4494783863 77 if (c == '*') {
samux 1:fb4494783863 78 o_find = true;
samux 1:fb4494783863 79 }
samux 1:fb4494783863 80 if (o_find && c != '\r' && c != '\n') {
samux 1:fb4494783863 81 str += c;
samux 1:fb4494783863 82 pos = str.find("*OPEN*");
samux 1:fb4494783863 83 if (pos != string::npos) {
samux 1:fb4494783863 84 wifi->flush();
samux 1:fb4494783863 85 return 0;
samux 1:fb4494783863 86 }
samux 1:fb4494783863 87 }
samux 1:fb4494783863 88 }
samux 1:fb4494783863 89 }
samux 1:fb4494783863 90 }