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This repository has been superceded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@13:41098c907200, 2014-11-30 (annotated)

Committer:
michaeljkoster
Date:
Sun Nov 30 21:14:09 2014 +0000
Revision:
13:41098c907200
Parent:
12:c5f0eac67a8a
Child:
16:3f0efaa57a12
First commit function templates for lightweight UDP client interface to ESP8266

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;
samux 1:fb4494783863 30 }
samux 1:fb4494783863 31
samux 1:fb4494783863 32 int UDPSocket::init(void)
samux 1:fb4494783863 33 {
samux 1:fb4494783863 34 return 0;
samux 1:fb4494783863 35 }
samux 1:fb4494783863 36
samux 1:fb4494783863 37 // Server initialization
samux 1:fb4494783863 38 int UDPSocket::bind(int port)
samux 1:fb4494783863 39 {
samux 1:fb4494783863 40 return 0;
samux 1:fb4494783863 41 }
samux 1:fb4494783863 42
samux 1:fb4494783863 43 // -1 if unsuccessful, else number of bytes written
samux 1:fb4494783863 44 int UDPSocket::sendTo(Endpoint &remote, char *packet, int length)
samux 1:fb4494783863 45 {
samux 1:fb4494783863 46 Timer tmr;
samux 1:fb4494783863 47 int idx = 0;
samux 1:fb4494783863 48
samux 1:fb4494783863 49 confEndpoint(remote);
samux 1:fb4494783863 50
samux 1:fb4494783863 51 tmr.start();
samux 1:fb4494783863 52
samux 1:fb4494783863 53 while ((tmr.read_ms() < _timeout) || _blocking) {
samux 1:fb4494783863 54
samux 1:fb4494783863 55 idx += wifi->send(packet, length);
samux 1:fb4494783863 56
samux 1:fb4494783863 57 if (idx == length)
samux 1:fb4494783863 58 return idx;
samux 1:fb4494783863 59 }
samux 1:fb4494783863 60 return (idx == 0) ? -1 : idx;
samux 1:fb4494783863 61 }
samux 1:fb4494783863 62
samux 1:fb4494783863 63 // -1 if unsuccessful, else number of bytes received
samux 1:fb4494783863 64 int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length)
samux 1:fb4494783863 65 {
samux 1:fb4494783863 66 Timer tmr;
samux 1:fb4494783863 67 int idx = 0;
samux 1:fb4494783863 68 int nb_available = 0;
samux 1:fb4494783863 69 int time = -1;
samux 1:fb4494783863 70
samux 1:fb4494783863 71 if (_blocking) {
samux 1:fb4494783863 72 while (1) {
samux 1:fb4494783863 73 nb_available = wifi->readable();
samux 1:fb4494783863 74 if (nb_available != 0) {
samux 1:fb4494783863 75 break;
samux 1:fb4494783863 76 }
samux 1:fb4494783863 77 }
michaeljkoster 12:c5f0eac67a8a 78 pc.printf("UDPsocket::receiveFrom: %d bytes\r\n", nb_available);
michaeljkoster 12:c5f0eac67a8a 79 }
samux 1:fb4494783863 80
samux 1:fb4494783863 81 tmr.start();
samux 1:fb4494783863 82
samux 1:fb4494783863 83 while (time < _timeout) {
samux 1:fb4494783863 84
samux 1:fb4494783863 85 nb_available = wifi->readable();
samux 1:fb4494783863 86 for (int i = 0; i < min(nb_available, length); i++) {
samux 1:fb4494783863 87 buffer[idx] = wifi->getc();
samux 1:fb4494783863 88 idx++;
samux 1:fb4494783863 89 }
samux 1:fb4494783863 90
samux 1:fb4494783863 91 if (idx == length) {
samux 1:fb4494783863 92 break;
samux 1:fb4494783863 93 }
samux 1:fb4494783863 94
samux 1:fb4494783863 95 time = tmr.read_ms();
samux 1:fb4494783863 96 }
samux 1:fb4494783863 97
samux 1:fb4494783863 98 readEndpoint(remote);
samux 1:fb4494783863 99 return (idx == 0) ? -1 : idx;
samux 1:fb4494783863 100 }
samux 1:fb4494783863 101
samux 1:fb4494783863 102 bool UDPSocket::confEndpoint(Endpoint & ep)
samux 1:fb4494783863 103 {
samux 1:fb4494783863 104 return true;
samux 1:fb4494783863 105 }
samux 1:fb4494783863 106
samux 1:fb4494783863 107 bool UDPSocket::readEndpoint(Endpoint & ep)
samux 1:fb4494783863 108 {
samux 1:fb4494783863 109 return false;
samux 1:fb4494783863 110 }