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@5:78943b3945b5, 2013-01-27 (annotated)

Committer:
gsfan
Date:
Sun Jan 27 14:31:19 2013 +0000
Revision:
5:78943b3945b5
Parent:
4:0bcec6272784
Child:
8:64184a968e3b
1st build

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 5:78943b3945b5 52 tmr.start();
gsfan 5:78943b3945b5 53
gsfan 5:78943b3945b5 54 while ((tmr.read_ms() < _timeout) || _blocking) {
gsfan 5:78943b3945b5 55
gsfan 5:78943b3945b5 56 idx += sendPacket(remote, packet, length);
gsfan 5:78943b3945b5 57
gsfan 5:78943b3945b5 58 if (idx == -1) return -1;
gsfan 5:78943b3945b5 59 if (idx == length)
gsfan 5:78943b3945b5 60 return idx;
gsfan 5:78943b3945b5 61 }
gsfan 5:78943b3945b5 62 return (idx == 0) ? -1 : idx;
gsfan 5:78943b3945b5 63 }
gsfan 5:78943b3945b5 64
gsfan 5:78943b3945b5 65 // -1 if unsuccessful, else number of bytes received
gsfan 5:78943b3945b5 66 int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length)
gsfan 5:78943b3945b5 67 {
gsfan 5:78943b3945b5 68 Timer tmr;
gsfan 5:78943b3945b5 69 int idx = 0;
gsfan 5:78943b3945b5 70 int nb_available = 0;
gsfan 5:78943b3945b5 71 int time = -1;
gsfan 5:78943b3945b5 72
gsfan 5:78943b3945b5 73 if (_cid < 0 || !_wifi->is_connected(_cid)) {
gsfan 5:78943b3945b5 74 // Socket open
gsfan 5:78943b3945b5 75 char cmd[CFG_CMD_SIZE];
gsfan 5:78943b3945b5 76 if (_server) {
gsfan 5:78943b3945b5 77 sprintf(cmd, "AT+NSUDP=%d", _port);
gsfan 5:78943b3945b5 78 } else {
gsfan 5:78943b3945b5 79 sprintf(cmd, "AT+NCUDP=%s,%d", remote.get_address(), remote.get_port());
gsfan 5:78943b3945b5 80 if (_port) {
gsfan 5:78943b3945b5 81 sprintf(&cmd[strlen(cmd)], ",%d", _port);
gsfan 5:78943b3945b5 82 }
gsfan 5:78943b3945b5 83 }
gsfan 5:78943b3945b5 84 if (_wifi->sendCommand(cmd, GSwifi::RES_CONNECT) == false) return -1;
gsfan 5:78943b3945b5 85 _cid = _wifi->readCID();
gsfan 5:78943b3945b5 86 }
gsfan 5:78943b3945b5 87
gsfan 5:78943b3945b5 88 if (_blocking) {
gsfan 5:78943b3945b5 89 while (1) {
gsfan 5:78943b3945b5 90 nb_available = _wifi->readable(_cid);
gsfan 5:78943b3945b5 91 if (nb_available != 0) {
gsfan 5:78943b3945b5 92 break;
gsfan 5:78943b3945b5 93 }
gsfan 5:78943b3945b5 94 }
gsfan 5:78943b3945b5 95 }
gsfan 5:78943b3945b5 96
gsfan 5:78943b3945b5 97 tmr.start();
gsfan 5:78943b3945b5 98
gsfan 5:78943b3945b5 99 while (time < _timeout) {
gsfan 5:78943b3945b5 100
gsfan 5:78943b3945b5 101 nb_available = _wifi->readable(_cid);
gsfan 5:78943b3945b5 102 for (int i = 0; i < min(nb_available, length); i++) {
gsfan 5:78943b3945b5 103 buffer[idx] = _wifi->getc(_cid);
gsfan 5:78943b3945b5 104 idx++;
gsfan 5:78943b3945b5 105 }
gsfan 5:78943b3945b5 106
gsfan 5:78943b3945b5 107 if (idx == length) {
gsfan 5:78943b3945b5 108 break;
gsfan 5:78943b3945b5 109 }
gsfan 5:78943b3945b5 110
gsfan 5:78943b3945b5 111 time = tmr.read_ms();
gsfan 5:78943b3945b5 112 }
gsfan 5:78943b3945b5 113
gsfan 5:78943b3945b5 114 if (_server) {
gsfan 5:78943b3945b5 115 char *ip;
gsfan 5:78943b3945b5 116 int port;
gsfan 5:78943b3945b5 117 if (_wifi->readRemote(_cid, &ip, &port)) {
gsfan 5:78943b3945b5 118 remote.set_address(ip, port);
gsfan 5:78943b3945b5 119 }
gsfan 5:78943b3945b5 120 }
gsfan 5:78943b3945b5 121 return (idx == 0) ? -1 : idx;
gsfan 5:78943b3945b5 122 }
gsfan 5:78943b3945b5 123
gsfan 5:78943b3945b5 124 int UDPSocket::sendPacket (Endpoint &ep, const char *buf, int len)
gsfan 5:78943b3945b5 125 {
gsfan 5:78943b3945b5 126 char cmd[CFG_CMD_SIZE];
gsfan 5:78943b3945b5 127 Timer tmr;
gsfan 5:78943b3945b5 128 int result = 0;
gsfan 5:78943b3945b5 129
gsfan 5:78943b3945b5 130 if (_cid < 0 || !_wifi->is_connected(_cid)) {
gsfan 5:78943b3945b5 131 // Socket open
gsfan 5:78943b3945b5 132 char cmd[CFG_CMD_SIZE];
gsfan 5:78943b3945b5 133 if (_server) {
gsfan 5:78943b3945b5 134 sprintf(cmd, "AT+NSUDP=%d", _port);
gsfan 5:78943b3945b5 135 } else {
gsfan 5:78943b3945b5 136 sprintf(cmd, "AT+NCUDP=%s,%d", ep.get_address(), ep.get_port());
gsfan 5:78943b3945b5 137 if (_port) {
gsfan 5:78943b3945b5 138 sprintf(&cmd[strlen(cmd)], ",%d", _port);
gsfan 5:78943b3945b5 139 }
gsfan 5:78943b3945b5 140 }
gsfan 5:78943b3945b5 141 if (_wifi->sendCommand(cmd, GSwifi::RES_CONNECT) == false) return -1;
gsfan 5:78943b3945b5 142 _cid = _wifi->readCID();
gsfan 5:78943b3945b5 143 }
gsfan 5:78943b3945b5 144
gsfan 5:78943b3945b5 145 if (_server) {
gsfan 5:78943b3945b5 146 // UDP Server
gsfan 5:78943b3945b5 147 sprintf(cmd, "\x1bY%X%s:%d:%04d", _cid, ep.get_address(), ep.get_port(), len);
gsfan 5:78943b3945b5 148 _wifi->send(cmd, strlen(cmd));
gsfan 5:78943b3945b5 149 result = _wifi->send(buf, len, GSwifi::RES_NORMAL);
gsfan 5:78943b3945b5 150 } else {
gsfan 5:78943b3945b5 151 // UDP Client
gsfan 5:78943b3945b5 152 sprintf(cmd, "\x1bZ%X%04d", _cid, len);
gsfan 5:78943b3945b5 153 _wifi->send(cmd, strlen(cmd));
gsfan 5:78943b3945b5 154 result = _wifi->send(buf, len, GSwifi::RES_NORMAL);
gsfan 5:78943b3945b5 155 }
gsfan 5:78943b3945b5 156
gsfan 5:78943b3945b5 157 return result;
gsfan 5:78943b3945b5 158 }