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This repository has been superceded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/UDPSocket.cpp@23:de9221771e96, 2014-12-08 (annotated)

Committer:
michaeljkoster
Date:
Mon Dec 08 00:53:07 2014 +0000
Revision:
23:de9221771e96
Parent:
22:c4360e61486a
Child:
27:9c6cefc12f0c
Added CWMODE command to join()

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 "UDPSocket.h"
samux 1:fb4494783863 20
samux 1:fb4494783863 21 #include <string>
samux 1:fb4494783863 22 #include <algorithm>
samux 1:fb4494783863 23
michaeljkoster 12:c5f0eac67a8a 24 extern Serial pc;
michaeljkoster 12:c5f0eac67a8a 25
samux 1:fb4494783863 26 UDPSocket::UDPSocket()
samux 1:fb4494783863 27 {
samux 1:fb4494783863 28 endpoint_configured = false;
samux 1:fb4494783863 29 endpoint_read = false;
michaeljkoster 19:fb8d5bff2076 30 Endpoint currentEndpoint;
samux 1:fb4494783863 31 }
samux 1:fb4494783863 32
samux 1:fb4494783863 33 int UDPSocket::init(void)
samux 1:fb4494783863 34 {
samux 1:fb4494783863 35 return 0;
samux 1:fb4494783863 36 }
samux 1:fb4494783863 37
samux 1:fb4494783863 38 // Server initialization
samux 1:fb4494783863 39 int UDPSocket::bind(int port)
samux 1:fb4494783863 40 {
samux 1:fb4494783863 41 return 0;
samux 1:fb4494783863 42 }
samux 1:fb4494783863 43
samux 1:fb4494783863 44 // -1 if unsuccessful, else number of bytes written
samux 1:fb4494783863 45 int UDPSocket::sendTo(Endpoint &remote, char *packet, int length)
samux 1:fb4494783863 46 {
samux 1:fb4494783863 47 Timer tmr;
samux 1:fb4494783863 48 int idx = 0;
samux 1:fb4494783863 49
samux 1:fb4494783863 50 confEndpoint(remote);
samux 1:fb4494783863 51
samux 1:fb4494783863 52 tmr.start();
samux 1:fb4494783863 53
samux 1:fb4494783863 54 while ((tmr.read_ms() < _timeout) || _blocking) {
samux 1:fb4494783863 55
samux 1:fb4494783863 56 idx += wifi->send(packet, length);
samux 1:fb4494783863 57
samux 1:fb4494783863 58 if (idx == length)
samux 1:fb4494783863 59 return idx;
samux 1:fb4494783863 60 }
samux 1:fb4494783863 61 return (idx == 0) ? -1 : idx;
samux 1:fb4494783863 62 }
samux 1:fb4494783863 63
samux 1:fb4494783863 64 // -1 if unsuccessful, else number of bytes received
samux 1:fb4494783863 65 int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length)
samux 1:fb4494783863 66 {
samux 1:fb4494783863 67 Timer tmr;
samux 1:fb4494783863 68 int idx = 0;
samux 1:fb4494783863 69 int nb_available = 0;
samux 1:fb4494783863 70 int time = -1;
michaeljkoster 22:c4360e61486a 71 tmr.start();
michaeljkoster 22:c4360e61486a 72
samux 1:fb4494783863 73 if (_blocking) {
samux 1:fb4494783863 74 while (1) {
samux 1:fb4494783863 75 nb_available = wifi->readable();
samux 1:fb4494783863 76 if (nb_available != 0) {
samux 1:fb4494783863 77 break;
samux 1:fb4494783863 78 }
samux 1:fb4494783863 79 }
michaeljkoster 21:690526f05fe6 80 }
michaeljkoster 21:690526f05fe6 81 else {
michaeljkoster 22:c4360e61486a 82 tmr.reset();
michaeljkoster 21:690526f05fe6 83
michaeljkoster 21:690526f05fe6 84 while (time < _timeout){
michaeljkoster 21:690526f05fe6 85 nb_available = wifi->readable();
michaeljkoster 21:690526f05fe6 86 if (nb_available < 0) return nb_available;
michaeljkoster 21:690526f05fe6 87 if (nb_available > 0) break ;
michaeljkoster 21:690526f05fe6 88 time = tmr.read_ms();
michaeljkoster 21:690526f05fe6 89 }
michaeljkoster 21:690526f05fe6 90
michaeljkoster 21:690526f05fe6 91 if (nb_available == 0) return nb_available;
michaeljkoster 21:690526f05fe6 92 }
michaeljkoster 21:690526f05fe6 93
michaeljkoster 22:c4360e61486a 94 tmr.reset();
samux 1:fb4494783863 95 while (time < _timeout) {
samux 1:fb4494783863 96
samux 1:fb4494783863 97 nb_available = wifi->readable();
michaeljkoster 23:de9221771e96 98 //for (int i = 0; i < min(nb_available, length); i++) {
michaeljkoster 23:de9221771e96 99 for (int i = 0; i < min(nb_available, (length-idx)); i++) {
samux 1:fb4494783863 100 buffer[idx] = wifi->getc();
samux 1:fb4494783863 101 idx++;
samux 1:fb4494783863 102 }
samux 1:fb4494783863 103 if (idx == length) {
samux 1:fb4494783863 104 break;
samux 1:fb4494783863 105 }
samux 1:fb4494783863 106 time = tmr.read_ms();
samux 1:fb4494783863 107 }
samux 1:fb4494783863 108 readEndpoint(remote);
samux 1:fb4494783863 109 return (idx == 0) ? -1 : idx;
samux 1:fb4494783863 110 }
samux 1:fb4494783863 111
samux 1:fb4494783863 112 bool UDPSocket::confEndpoint(Endpoint & ep)
samux 1:fb4494783863 113 {
michaeljkoster 19:fb8d5bff2076 114 currentEndpoint = ep;
samux 1:fb4494783863 115 return true;
samux 1:fb4494783863 116 }
samux 1:fb4494783863 117
samux 1:fb4494783863 118 bool UDPSocket::readEndpoint(Endpoint & ep)
samux 1:fb4494783863 119 {
michaeljkoster 19:fb8d5bff2076 120 ep = currentEndpoint;
michaeljkoster 16:3f0efaa57a12 121 return true;
samux 1:fb4494783863 122 }