Norimasa Okamoto / WIZ820ioInterface

WIZ820io(W5200) network interface, EthernetInterface compatible.

Dependents:   Seeed_Ethernet_Shield_V2_HelloWorld Seeed_Ethernet_Shield Cayenne-WIZ820ioInterface Seeed_Ethernet_Shield

Fork of WiflyInterface by mbed official

WIZ820io

Socket/UDPSocket.cpp@5:fb15c35d1e28, 2013-08-27 (annotated)

Committer:
va009039
Date:
Tue Aug 27 12:50:11 2013 +0000
Revision:
5:fb15c35d1e28
Parent:
4:0bcec6272784 
WIZ820ioInterface?first commit

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 UDPSocket::UDPSocket()
samux 1:fb4494783863 22 {
samux 1:fb4494783863 23 }
samux 1:fb4494783863 24
samux 1:fb4494783863 25 int UDPSocket::init(void)
samux 1:fb4494783863 26 {
va009039 5:fb15c35d1e28 27 if (_sock_fd < 0) {
va009039 5:fb15c35d1e28 28 _sock_fd = eth->new_socket();
va009039 5:fb15c35d1e28 29 }
va009039 5:fb15c35d1e28 30 eth->setProtocol(_sock_fd, UDP);
samux 1:fb4494783863 31 return 0;
samux 1:fb4494783863 32 }
samux 1:fb4494783863 33
samux 1:fb4494783863 34 // Server initialization
samux 1:fb4494783863 35 int UDPSocket::bind(int port)
samux 1:fb4494783863 36 {
va009039 5:fb15c35d1e28 37 if (_sock_fd < 0) {
va009039 5:fb15c35d1e28 38 _sock_fd = eth->new_socket();
va009039 5:fb15c35d1e28 39 if (_sock_fd < 0) {
va009039 5:fb15c35d1e28 40 return -1;
va009039 5:fb15c35d1e28 41 }
va009039 5:fb15c35d1e28 42 }
samux 1:fb4494783863 43 // set local port
va009039 5:fb15c35d1e28 44 eth->sreg<uint16_t>(_sock_fd, Sn_PORT, port);
samux 4:0bcec6272784 45 // set udp protocol
va009039 5:fb15c35d1e28 46 eth->setProtocol(_sock_fd, UDP);
va009039 5:fb15c35d1e28 47 eth->scmd(_sock_fd, OPEN);
samux 1:fb4494783863 48 return 0;
samux 1:fb4494783863 49 }
samux 1:fb4494783863 50
samux 1:fb4494783863 51 // -1 if unsuccessful, else number of bytes written
samux 1:fb4494783863 52 int UDPSocket::sendTo(Endpoint &remote, char *packet, int length)
samux 1:fb4494783863 53 {
va009039 5:fb15c35d1e28 54 int size = eth->wait_writeable(_sock_fd, _blocking ? -1 : _timeout, length-1);
va009039 5:fb15c35d1e28 55 if (size < 0) {
va009039 5:fb15c35d1e28 56 return -1;
va009039 5:fb15c35d1e28 57 }
samux 1:fb4494783863 58 confEndpoint(remote);
va009039 5:fb15c35d1e28 59 int ret = eth->send(_sock_fd, packet, length);
va009039 5:fb15c35d1e28 60 return ret;
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 {
va009039 5:fb15c35d1e28 66 uint8_t info[8];
va009039 5:fb15c35d1e28 67 int size = eth->wait_readable(_sock_fd, _blocking ? -1 : _timeout, sizeof(info));
va009039 5:fb15c35d1e28 68 if (size < 0) {
va009039 5:fb15c35d1e28 69 return -1;
samux 1:fb4494783863 70 }
va009039 5:fb15c35d1e28 71 eth->recv(_sock_fd, (char*)info, sizeof(info));
va009039 5:fb15c35d1e28 72 readEndpoint(remote, info);
va009039 5:fb15c35d1e28 73 int udp_size = info[6]<<8|info[7];
va009039 5:fb15c35d1e28 74 //TEST_ASSERT(udp_size <= (size-sizeof(info)));
va009039 5:fb15c35d1e28 75 if (udp_size > (size-sizeof(info))) {
va009039 5:fb15c35d1e28 76 return -1;
samux 1:fb4494783863 77 }
va009039 5:fb15c35d1e28 78 return eth->recv(_sock_fd, buffer, udp_size);
samux 1:fb4494783863 79 }
samux 1:fb4494783863 80
va009039 5:fb15c35d1e28 81 void UDPSocket::confEndpoint(Endpoint & ep)
samux 1:fb4494783863 82 {
va009039 5:fb15c35d1e28 83 char * host = ep.get_address();
va009039 5:fb15c35d1e28 84 // set remote host
va009039 5:fb15c35d1e28 85 eth->sreg_ip(_sock_fd, Sn_DIPR, host);
va009039 5:fb15c35d1e28 86 // set remote port
va009039 5:fb15c35d1e28 87 eth->sreg<uint16_t>(_sock_fd, Sn_DPORT, ep.get_port());
samux 1:fb4494783863 88 }
samux 1:fb4494783863 89
va009039 5:fb15c35d1e28 90 void UDPSocket::readEndpoint(Endpoint & ep, uint8_t info[])
samux 1:fb4494783863 91 {
va009039 5:fb15c35d1e28 92 char addr[17];
va009039 5:fb15c35d1e28 93 snprintf(addr, sizeof(addr), "%d.%d.%d.%d", info[0], info[1], info[2], info[3]);
va009039 5:fb15c35d1e28 94 uint16_t port = info[4]<<8|info[5];
va009039 5:fb15c35d1e28 95 ep.set_address(addr, port);
samux 1:fb4494783863 96 }