For mbed OS-5 version for WIZnet Ethernet Interface, this is Library using Hardware TCP/IP chip, W5500 and TCP/IP Offload Engine, W7500.
Warning
- If you want to use existing codes, you need to change the class used as EthernetInterface to WIZnetInterface.
This is WIZnet Ethernet Interface using Hardware TCP/IP chip, W5500 and TCP/IP Offload Engine, W7500.
- WIZwiki_W7500 : /platforms/WIZwiki-W7500/
- WIZwiki_W7500P : /platforms/WIZwiki-W7500P/
- WIZwiki_W7500ECO : /platforms/WIZwiki-W7500ECO/
- W5500 Ethernet Shield : /components/W5500-Ethernet-Kit-for-IoT/
This library is an Ethernet Interface library port-based on [EthernetInterface](https://developer.mbed.org/users/mbed_official/code/EthernetInterface/docs/tip/).
For more detail, visit http://embeddist.blogspot.kr/2015/06/wiznetinterface-for-armmbed.html
Socket/WIZnet_UDPSocket.cpp@0:d4c8fe4d9b29, 2017-09-04 (annotated)
- Committer:
- justinkim
- Date:
- Mon Sep 04 00:23:04 2017 +0000
- Revision:
- 0:d4c8fe4d9b29
mbed OS 5 version migration...
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
justinkim | 0:d4c8fe4d9b29 | 1 | /* Copyright (C) 2012 mbed.org, MIT License |
justinkim | 0:d4c8fe4d9b29 | 2 | * |
justinkim | 0:d4c8fe4d9b29 | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
justinkim | 0:d4c8fe4d9b29 | 4 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
justinkim | 0:d4c8fe4d9b29 | 5 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
justinkim | 0:d4c8fe4d9b29 | 6 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
justinkim | 0:d4c8fe4d9b29 | 7 | * furnished to do so, subject to the following conditions: |
justinkim | 0:d4c8fe4d9b29 | 8 | * |
justinkim | 0:d4c8fe4d9b29 | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
justinkim | 0:d4c8fe4d9b29 | 10 | * substantial portions of the Software. |
justinkim | 0:d4c8fe4d9b29 | 11 | * |
justinkim | 0:d4c8fe4d9b29 | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
justinkim | 0:d4c8fe4d9b29 | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
justinkim | 0:d4c8fe4d9b29 | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
justinkim | 0:d4c8fe4d9b29 | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
justinkim | 0:d4c8fe4d9b29 | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
justinkim | 0:d4c8fe4d9b29 | 17 | */ |
justinkim | 0:d4c8fe4d9b29 | 18 | |
justinkim | 0:d4c8fe4d9b29 | 19 | #include "WIZnet_UDPSocket.h" |
justinkim | 0:d4c8fe4d9b29 | 20 | |
justinkim | 0:d4c8fe4d9b29 | 21 | static int udp_local_port; |
justinkim | 0:d4c8fe4d9b29 | 22 | |
justinkim | 0:d4c8fe4d9b29 | 23 | WIZnet_UDPSocket::WIZnet_UDPSocket() |
justinkim | 0:d4c8fe4d9b29 | 24 | { |
justinkim | 0:d4c8fe4d9b29 | 25 | } |
justinkim | 0:d4c8fe4d9b29 | 26 | // After init function, bind() should be called. |
justinkim | 0:d4c8fe4d9b29 | 27 | int WIZnet_UDPSocket::init(void) |
justinkim | 0:d4c8fe4d9b29 | 28 | { |
justinkim | 0:d4c8fe4d9b29 | 29 | if (_sock_fd < 0) { |
justinkim | 0:d4c8fe4d9b29 | 30 | _sock_fd = eth->new_socket(); |
justinkim | 0:d4c8fe4d9b29 | 31 | } |
justinkim | 0:d4c8fe4d9b29 | 32 | if (eth->setProtocol(_sock_fd, WIZnet_Chip::UDP) == false) return -1; |
justinkim | 0:d4c8fe4d9b29 | 33 | return 0; |
justinkim | 0:d4c8fe4d9b29 | 34 | } |
justinkim | 0:d4c8fe4d9b29 | 35 | |
justinkim | 0:d4c8fe4d9b29 | 36 | // Server initialization |
justinkim | 0:d4c8fe4d9b29 | 37 | int WIZnet_UDPSocket::bind(int port) |
justinkim | 0:d4c8fe4d9b29 | 38 | { |
justinkim | 0:d4c8fe4d9b29 | 39 | if (_sock_fd < 0) { |
justinkim | 0:d4c8fe4d9b29 | 40 | _sock_fd = eth->new_socket(); |
justinkim | 0:d4c8fe4d9b29 | 41 | if (_sock_fd < 0) { |
justinkim | 0:d4c8fe4d9b29 | 42 | return -1; |
justinkim | 0:d4c8fe4d9b29 | 43 | } |
justinkim | 0:d4c8fe4d9b29 | 44 | } |
justinkim | 0:d4c8fe4d9b29 | 45 | // set local port |
justinkim | 0:d4c8fe4d9b29 | 46 | if (port != 0) { |
justinkim | 0:d4c8fe4d9b29 | 47 | eth->sreg<uint16_t>(_sock_fd, Sn_PORT, port); |
justinkim | 0:d4c8fe4d9b29 | 48 | } else { |
justinkim | 0:d4c8fe4d9b29 | 49 | udp_local_port++; |
justinkim | 0:d4c8fe4d9b29 | 50 | eth->sreg<uint16_t>(_sock_fd, Sn_PORT, udp_local_port); |
justinkim | 0:d4c8fe4d9b29 | 51 | } |
justinkim | 0:d4c8fe4d9b29 | 52 | // set udp protocol |
justinkim | 0:d4c8fe4d9b29 | 53 | eth->setProtocol(_sock_fd, WIZnet_Chip::UDP); |
justinkim | 0:d4c8fe4d9b29 | 54 | eth->scmd(_sock_fd, WIZnet_Chip::OPEN); |
justinkim | 0:d4c8fe4d9b29 | 55 | return 0; |
justinkim | 0:d4c8fe4d9b29 | 56 | } |
justinkim | 0:d4c8fe4d9b29 | 57 | |
justinkim | 0:d4c8fe4d9b29 | 58 | // -1 if unsuccessful, else number of bytes written |
justinkim | 0:d4c8fe4d9b29 | 59 | int WIZnet_UDPSocket::sendTo(Endpoint &remote, char *packet, int length) |
justinkim | 0:d4c8fe4d9b29 | 60 | { |
justinkim | 0:d4c8fe4d9b29 | 61 | int size = eth->wait_writeable(_sock_fd, _blocking ? -1 : _timeout, length-1); |
justinkim | 0:d4c8fe4d9b29 | 62 | if (size < 0) { |
justinkim | 0:d4c8fe4d9b29 | 63 | return -1; |
justinkim | 0:d4c8fe4d9b29 | 64 | } |
justinkim | 0:d4c8fe4d9b29 | 65 | confEndpoint(remote); |
justinkim | 0:d4c8fe4d9b29 | 66 | int ret = eth->send(_sock_fd, packet, length); |
justinkim | 0:d4c8fe4d9b29 | 67 | return ret; |
justinkim | 0:d4c8fe4d9b29 | 68 | } |
justinkim | 0:d4c8fe4d9b29 | 69 | |
justinkim | 0:d4c8fe4d9b29 | 70 | // -1 if unsuccessful, else number of bytes received |
justinkim | 0:d4c8fe4d9b29 | 71 | int WIZnet_UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length) |
justinkim | 0:d4c8fe4d9b29 | 72 | { |
justinkim | 0:d4c8fe4d9b29 | 73 | uint8_t info[8]; |
justinkim | 0:d4c8fe4d9b29 | 74 | int size = eth->wait_readable(_sock_fd, _blocking ? -1 : _timeout, sizeof(info)); |
justinkim | 0:d4c8fe4d9b29 | 75 | if (size < 0) { |
justinkim | 0:d4c8fe4d9b29 | 76 | return -1; |
justinkim | 0:d4c8fe4d9b29 | 77 | } |
justinkim | 0:d4c8fe4d9b29 | 78 | eth->recv(_sock_fd, (char*)info, sizeof(info)); |
justinkim | 0:d4c8fe4d9b29 | 79 | readEndpoint(remote, info); |
justinkim | 0:d4c8fe4d9b29 | 80 | int udp_size = info[6]<<8|info[7]; |
justinkim | 0:d4c8fe4d9b29 | 81 | //TEST_ASSERT(udp_size <= (size-sizeof(info))); |
justinkim | 0:d4c8fe4d9b29 | 82 | if (udp_size > (size-sizeof(info))) { |
justinkim | 0:d4c8fe4d9b29 | 83 | return -1; |
justinkim | 0:d4c8fe4d9b29 | 84 | } |
justinkim | 0:d4c8fe4d9b29 | 85 | |
justinkim | 0:d4c8fe4d9b29 | 86 | /* Perform Length check here to prevent buffer overrun */ |
justinkim | 0:d4c8fe4d9b29 | 87 | /* fixed by Sean Newton (https://developer.mbed.org/users/SeanNewton/) */ |
justinkim | 0:d4c8fe4d9b29 | 88 | if (udp_size > length) { |
justinkim | 0:d4c8fe4d9b29 | 89 | //printf("udp_size: %d\n",udp_size); |
justinkim | 0:d4c8fe4d9b29 | 90 | return -1; |
justinkim | 0:d4c8fe4d9b29 | 91 | } |
justinkim | 0:d4c8fe4d9b29 | 92 | return eth->recv(_sock_fd, buffer, udp_size); |
justinkim | 0:d4c8fe4d9b29 | 93 | } |
justinkim | 0:d4c8fe4d9b29 | 94 | |
justinkim | 0:d4c8fe4d9b29 | 95 | void WIZnet_UDPSocket::confEndpoint(Endpoint & ep) |
justinkim | 0:d4c8fe4d9b29 | 96 | { |
justinkim | 0:d4c8fe4d9b29 | 97 | char * host = ep.get_address(); |
justinkim | 0:d4c8fe4d9b29 | 98 | // set remote host |
justinkim | 0:d4c8fe4d9b29 | 99 | eth->sreg_ip(_sock_fd, Sn_DIPR, host); |
justinkim | 0:d4c8fe4d9b29 | 100 | // set remote port |
justinkim | 0:d4c8fe4d9b29 | 101 | eth->sreg<uint16_t>(_sock_fd, Sn_DPORT, ep.get_port()); |
justinkim | 0:d4c8fe4d9b29 | 102 | } |
justinkim | 0:d4c8fe4d9b29 | 103 | |
justinkim | 0:d4c8fe4d9b29 | 104 | void WIZnet_UDPSocket::readEndpoint(Endpoint & ep, uint8_t info[]) |
justinkim | 0:d4c8fe4d9b29 | 105 | { |
justinkim | 0:d4c8fe4d9b29 | 106 | char addr[17]; |
justinkim | 0:d4c8fe4d9b29 | 107 | snprintf(addr, sizeof(addr), "%d.%d.%d.%d", info[0], info[1], info[2], info[3]); |
justinkim | 0:d4c8fe4d9b29 | 108 | uint16_t port = info[4]<<8|info[5]; |
justinkim | 0:d4c8fe4d9b29 | 109 | ep.set_address(addr, port); |
justinkim | 0:d4c8fe4d9b29 | 110 | } |