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@22:d25a5a0d2497, 2019-09-24 (annotated)

Committer:
gsfan
Date:
Tue Sep 24 06:24:37 2019 +0000
Revision:
22:d25a5a0d2497
Parent:
12:057089026a20 
UART Command and SPI Data supported.; bug fix.;

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 22:d25a5a0d2497 43
gsfan 22:d25a5a0d2497 44 if (_cid < 0 && _wifi->isAssociated()) {
gsfan 22:d25a5a0d2497 45 // Socket open
gsfan 22:d25a5a0d2497 46 _cid = _wifi->listen(GSwifi::PROTO_UDP, _port);
gsfan 22:d25a5a0d2497 47 if (_cid < 0) return -1;
gsfan 22:d25a5a0d2497 48 }
gsfan 22:d25a5a0d2497 49
gsfan 5:78943b3945b5 50 return 0;
gsfan 5:78943b3945b5 51 }
gsfan 5:78943b3945b5 52
gsfan 5:78943b3945b5 53 // -1 if unsuccessful, else number of bytes written
gsfan 5:78943b3945b5 54 int UDPSocket::sendTo(Endpoint &remote, char *packet, int length)
gsfan 5:78943b3945b5 55 {
gsfan 5:78943b3945b5 56 Timer tmr;
gsfan 5:78943b3945b5 57 int idx = 0;
gsfan 5:78943b3945b5 58
gsfan 12:057089026a20 59 if (_cid < 0 && _wifi->isAssociated()) {
gsfan 8:64184a968e3b 60 // Socket open
gsfan 8:64184a968e3b 61 if (_server) {
gsfan 8:64184a968e3b 62 _cid = _wifi->listen(GSwifi::PROTO_UDP, _port);
gsfan 8:64184a968e3b 63 } else {
gsfan 8:64184a968e3b 64 _cid = _wifi->open(GSwifi::PROTO_UDP, remote.get_address(), remote.get_port(), _port);
gsfan 8:64184a968e3b 65 }
gsfan 8:64184a968e3b 66 if (_cid < 0) return -1;
gsfan 8:64184a968e3b 67 }
gsfan 8:64184a968e3b 68
gsfan 5:78943b3945b5 69 tmr.start();
gsfan 5:78943b3945b5 70
gsfan 5:78943b3945b5 71 while ((tmr.read_ms() < _timeout) || _blocking) {
gsfan 5:78943b3945b5 72
gsfan 8:64184a968e3b 73 if (_server) {
gsfan 8:64184a968e3b 74 idx += _wifi->sendto(_cid, packet, length, remote.get_address(), remote.get_port());
gsfan 8:64184a968e3b 75 } else {
gsfan 8:64184a968e3b 76 idx += _wifi->send(_cid, packet, length);
gsfan 8:64184a968e3b 77 }
gsfan 8:64184a968e3b 78 if (idx < 0) {
gsfan 8:64184a968e3b 79 if (!_wifi->isConnected(_cid)) _cid = -1;
gsfan 8:64184a968e3b 80 }
gsfan 5:78943b3945b5 81
gsfan 5:78943b3945b5 82 if (idx == length)
gsfan 5:78943b3945b5 83 return idx;
gsfan 5:78943b3945b5 84 }
gsfan 5:78943b3945b5 85 return (idx == 0) ? -1 : idx;
gsfan 5:78943b3945b5 86 }
gsfan 5:78943b3945b5 87
gsfan 5:78943b3945b5 88 // -1 if unsuccessful, else number of bytes received
gsfan 5:78943b3945b5 89 int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length)
gsfan 5:78943b3945b5 90 {
gsfan 5:78943b3945b5 91 Timer tmr;
gsfan 5:78943b3945b5 92 int idx = 0;
gsfan 5:78943b3945b5 93 int time = -1;
gsfan 8:64184a968e3b 94 char ip[16];
gsfan 8:64184a968e3b 95 int port;
gsfan 5:78943b3945b5 96
gsfan 12:057089026a20 97 if (_cid < 0 && _wifi->isAssociated()) {
gsfan 5:78943b3945b5 98 // Socket open
gsfan 5:78943b3945b5 99 if (_server) {
gsfan 8:64184a968e3b 100 _cid = _wifi->listen(GSwifi::PROTO_UDP, _port);
gsfan 5:78943b3945b5 101 } else {
gsfan 8:64184a968e3b 102 _cid = _wifi->open(GSwifi::PROTO_UDP, remote.get_address(), remote.get_port(), _port);
gsfan 5:78943b3945b5 103 }
gsfan 8:64184a968e3b 104 if (_cid < 0) return -1;
gsfan 5:78943b3945b5 105 }
gsfan 5:78943b3945b5 106
gsfan 5:78943b3945b5 107 if (_blocking) {
gsfan 8:64184a968e3b 108 tmr.start();
gsfan 8:64184a968e3b 109 while (time < _timeout + 20) {
gsfan 8:64184a968e3b 110 if (_wifi->readable(_cid)) {
gsfan 5:78943b3945b5 111 break;
gsfan 5:78943b3945b5 112 }
gsfan 22:d25a5a0d2497 113 Thread::wait(1);
gsfan 8:64184a968e3b 114 time = tmr.read_ms();
gsfan 8:64184a968e3b 115 }
gsfan 8:64184a968e3b 116 if (time >= _timeout + 20) {
gsfan 22:d25a5a0d2497 117 return 0;
gsfan 5:78943b3945b5 118 }
gsfan 5:78943b3945b5 119 }
gsfan 5:78943b3945b5 120
gsfan 8:64184a968e3b 121 tmr.reset();
gsfan 10:7d8134e7df01 122 time = -1;
gsfan 5:78943b3945b5 123 tmr.start();
gsfan 5:78943b3945b5 124
gsfan 5:78943b3945b5 125 while (time < _timeout) {
gsfan 5:78943b3945b5 126
gsfan 8:64184a968e3b 127 if (_server) {
gsfan 8:64184a968e3b 128 idx += _wifi->recvfrom(_cid, &buffer[idx], length - idx, ip, &port);
gsfan 8:64184a968e3b 129 } else {
gsfan 8:64184a968e3b 130 idx += _wifi->recv(_cid, &buffer[idx], length - idx);
gsfan 8:64184a968e3b 131 }
gsfan 8:64184a968e3b 132 if (idx < 0) {
gsfan 8:64184a968e3b 133 if (!_wifi->isConnected(_cid)) _cid = -1;
gsfan 8:64184a968e3b 134 return -1;
gsfan 5:78943b3945b5 135 }
gsfan 5:78943b3945b5 136
gsfan 22:d25a5a0d2497 137 if (idx == length || idx > 0) {
gsfan 5:78943b3945b5 138 break;
gsfan 5:78943b3945b5 139 }
gsfan 5:78943b3945b5 140
gsfan 5:78943b3945b5 141 time = tmr.read_ms();
gsfan 5:78943b3945b5 142 }
gsfan 5:78943b3945b5 143
gsfan 5:78943b3945b5 144 if (_server) {
gsfan 8:64184a968e3b 145 remote.set_address(ip, port);
gsfan 5:78943b3945b5 146 }
gsfan 22:d25a5a0d2497 147 // return (idx == 0) ? -1 : idx;
gsfan 22:d25a5a0d2497 148 return idx;
gsfan 5:78943b3945b5 149 }