gs fan / GSwifiInterface

GSwifiInterface library (interface for GainSpan Wi-Fi GS1011 modules) Please see https://mbed.org/users/gsfan/notebook/GSwifiInterface/

Dependents:   GSwifiInterface_HelloWorld GSwifiInterface_HelloServo GSwifiInterface_UDPEchoServer GSwifiInterface_UDPEchoClient ... more

Fork of WiflyInterface by mbed official

GainSpan Wi-Fi library

The GS1011/GS2100 is an ultra low power 802.11b wireless module from GainSpan.

mbed RTOS supported.

/media/uploads/gsfan/gs_im_002.jpg /media/uploads/gsfan/gs1011m_2.jpg

ゲインスパン Wi-Fi モジュール ライブラリ

ゲインスパン社の低電力 Wi-Fiモジュール（無線LAN） GS1011/GS2100 シリーズ用のライブラリです。

mbed RTOS に対応しています。(mbed2.0)

Socket/UDPSocket.cpp@8:64184a968e3b, 2013-10-31 (annotated)

Committer:
gsfan
Date:
Thu Oct 31 06:41:45 2013 +0000
Revision:
8:64184a968e3b
Parent:
5:78943b3945b5
Child:
10:7d8134e7df01
supported mbed RTOS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gsfan 5:78943b3945b5 1 /* Copyright (C) 2012 mbed.org, MIT License
gsfan 5:78943b3945b5 2 *
gsfan 5:78943b3945b5 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
gsfan 5:78943b3945b5 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
gsfan 5:78943b3945b5 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
gsfan 5:78943b3945b5 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
gsfan 5:78943b3945b5 7 * furnished to do so, subject to the following conditions:
gsfan 5:78943b3945b5 8 *
gsfan 5:78943b3945b5 9 * The above copyright notice and this permission notice shall be included in all copies or
gsfan 5:78943b3945b5 10 * substantial portions of the Software.
gsfan 5:78943b3945b5 11 *
gsfan 5:78943b3945b5 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
gsfan 5:78943b3945b5 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
gsfan 5:78943b3945b5 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
gsfan 5:78943b3945b5 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
gsfan 5:78943b3945b5 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
gsfan 5:78943b3945b5 17 */
gsfan 5:78943b3945b5 18 /* Copyright (C) 2013 gsfan, MIT License
gsfan 5:78943b3945b5 19 * port to the GainSpan Wi-FI module GS1011
gsfan 5:78943b3945b5 20 */
gsfan 5:78943b3945b5 21
gsfan 5:78943b3945b5 22 #include "UDPSocket.h"
gsfan 5:78943b3945b5 23
gsfan 5:78943b3945b5 24 #include <string>
gsfan 5:78943b3945b5 25 #include <algorithm>
gsfan 5:78943b3945b5 26
gsfan 5:78943b3945b5 27 UDPSocket::UDPSocket()
gsfan 5:78943b3945b5 28 {
gsfan 5:78943b3945b5 29 endpoint_connected = false;
gsfan 5:78943b3945b5 30 }
gsfan 5:78943b3945b5 31
gsfan 5:78943b3945b5 32 int UDPSocket::init(void)
gsfan 5:78943b3945b5 33 {
gsfan 5:78943b3945b5 34 _server = false;
gsfan 5:78943b3945b5 35 return 0;
gsfan 5:78943b3945b5 36 }
gsfan 5:78943b3945b5 37
gsfan 5:78943b3945b5 38 // Server initialization
gsfan 5:78943b3945b5 39 int UDPSocket::bind(int port)
gsfan 5:78943b3945b5 40 {
gsfan 5:78943b3945b5 41 _port = port;
gsfan 5:78943b3945b5 42 _server = true;
gsfan 5:78943b3945b5 43 return 0;
gsfan 5:78943b3945b5 44 }
gsfan 5:78943b3945b5 45
gsfan 5:78943b3945b5 46 // -1 if unsuccessful, else number of bytes written
gsfan 5:78943b3945b5 47 int UDPSocket::sendTo(Endpoint &remote, char *packet, int length)
gsfan 5:78943b3945b5 48 {
gsfan 5:78943b3945b5 49 Timer tmr;
gsfan 5:78943b3945b5 50 int idx = 0;
gsfan 5:78943b3945b5 51
gsfan 8:64184a968e3b 52 if (_cid < 0 && _wifi->isConnected()) {
gsfan 8:64184a968e3b 53 // Socket open
gsfan 8:64184a968e3b 54 if (_server) {
gsfan 8:64184a968e3b 55 _cid = _wifi->listen(GSwifi::PROTO_UDP, _port);
gsfan 8:64184a968e3b 56 } else {
gsfan 8:64184a968e3b 57 _cid = _wifi->open(GSwifi::PROTO_UDP, remote.get_address(), remote.get_port(), _port);
gsfan 8:64184a968e3b 58 }
gsfan 8:64184a968e3b 59 if (_cid < 0) return -1;
gsfan 8:64184a968e3b 60 }
gsfan 8:64184a968e3b 61
gsfan 5:78943b3945b5 62 tmr.start();
gsfan 5:78943b3945b5 63
gsfan 5:78943b3945b5 64 while ((tmr.read_ms() < _timeout) || _blocking) {
gsfan 5:78943b3945b5 65
gsfan 8:64184a968e3b 66 if (_server) {
gsfan 8:64184a968e3b 67 idx += _wifi->sendto(_cid, packet, length, remote.get_address(), remote.get_port());
gsfan 8:64184a968e3b 68 } else {
gsfan 8:64184a968e3b 69 idx += _wifi->send(_cid, packet, length);
gsfan 8:64184a968e3b 70 }
gsfan 8:64184a968e3b 71 if (idx < 0) {
gsfan 8:64184a968e3b 72 if (!_wifi->isConnected(_cid)) _cid = -1;
gsfan 8:64184a968e3b 73 }
gsfan 5:78943b3945b5 74
gsfan 5:78943b3945b5 75 if (idx == length)
gsfan 5:78943b3945b5 76 return idx;
gsfan 5:78943b3945b5 77 }
gsfan 5:78943b3945b5 78 return (idx == 0) ? -1 : idx;
gsfan 5:78943b3945b5 79 }
gsfan 5:78943b3945b5 80
gsfan 5:78943b3945b5 81 // -1 if unsuccessful, else number of bytes received
gsfan 5:78943b3945b5 82 int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length)
gsfan 5:78943b3945b5 83 {
gsfan 5:78943b3945b5 84 Timer tmr;
gsfan 5:78943b3945b5 85 int idx = 0;
gsfan 5:78943b3945b5 86 int time = -1;
gsfan 8:64184a968e3b 87 char ip[16];
gsfan 8:64184a968e3b 88 int port;
gsfan 5:78943b3945b5 89
gsfan 8:64184a968e3b 90 if (_cid < 0 && _wifi->isConnected()) {
gsfan 5:78943b3945b5 91 // Socket open
gsfan 5:78943b3945b5 92 if (_server) {
gsfan 8:64184a968e3b 93 _cid = _wifi->listen(GSwifi::PROTO_UDP, _port);
gsfan 5:78943b3945b5 94 } else {
gsfan 8:64184a968e3b 95 _cid = _wifi->open(GSwifi::PROTO_UDP, remote.get_address(), remote.get_port(), _port);
gsfan 5:78943b3945b5 96 }
gsfan 8:64184a968e3b 97 if (_cid < 0) return -1;
gsfan 5:78943b3945b5 98 }
gsfan 5:78943b3945b5 99
gsfan 5:78943b3945b5 100 if (_blocking) {
gsfan 8:64184a968e3b 101 tmr.start();
gsfan 8:64184a968e3b 102 while (time < _timeout + 20) {
gsfan 8:64184a968e3b 103 if (_wifi->readable(_cid)) {
gsfan 5:78943b3945b5 104 break;
gsfan 5:78943b3945b5 105 }
gsfan 8:64184a968e3b 106 time = tmr.read_ms();
gsfan 8:64184a968e3b 107 }
gsfan 8:64184a968e3b 108 if (time >= _timeout + 20) {
gsfan 8:64184a968e3b 109 return -1;
gsfan 5:78943b3945b5 110 }
gsfan 5:78943b3945b5 111 }
gsfan 5:78943b3945b5 112
gsfan 8:64184a968e3b 113 tmr.reset();
gsfan 5:78943b3945b5 114 tmr.start();
gsfan 5:78943b3945b5 115
gsfan 5:78943b3945b5 116 while (time < _timeout) {
gsfan 5:78943b3945b5 117
gsfan 8:64184a968e3b 118 if (_server) {
gsfan 8:64184a968e3b 119 idx += _wifi->recvfrom(_cid, &buffer[idx], length - idx, ip, &port);
gsfan 8:64184a968e3b 120 } else {
gsfan 8:64184a968e3b 121 idx += _wifi->recv(_cid, &buffer[idx], length - idx);
gsfan 8:64184a968e3b 122 }
gsfan 8:64184a968e3b 123 if (idx < 0) {
gsfan 8:64184a968e3b 124 if (!_wifi->isConnected(_cid)) _cid = -1;
gsfan 8:64184a968e3b 125 return -1;
gsfan 5:78943b3945b5 126 }
gsfan 5:78943b3945b5 127
gsfan 5:78943b3945b5 128 if (idx == length) {
gsfan 5:78943b3945b5 129 break;
gsfan 5:78943b3945b5 130 }
gsfan 5:78943b3945b5 131
gsfan 5:78943b3945b5 132 time = tmr.read_ms();
gsfan 5:78943b3945b5 133 }
gsfan 5:78943b3945b5 134
gsfan 5:78943b3945b5 135 if (_server) {
gsfan 8:64184a968e3b 136 remote.set_address(ip, port);
gsfan 5:78943b3945b5 137 }
gsfan 5:78943b3945b5 138 return (idx == 0) ? -1 : idx;
gsfan 5:78943b3945b5 139 }