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drivers: Initial import of WIZnet5x000 driver.

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Damien George
2014-08-31 23:33:25 +01:00
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drivers/wiznet5k/README.md
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This is the driver for the WIZnet5x00 series of Ethernet controllers.
Adapted for Micro Python.
Original source: https://github.com/Wiznet/W5500_EVB/tree/master/ioLibrary
Taken on: 30 August 2014
drivers/wiznet5k/ethernet/socket.c
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drivers/wiznet5k/ethernet/socket.h
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//*****************************************************************************
//
//! \file socket.h
//! \brief SOCKET APIs Header file.
//! \details SOCKET APIs like as berkeley socket api.
//! \version 1.0.2
//! \date 2013/10/21
//! \par Revision history
//! <2014/05/01> V1.0.2. Refer to M20140501
//! 1. Modify the comment : SO_REMAINED -> PACK_REMAINED
//! 2. Add the comment as zero byte udp data reception in getsockopt().
//! <2013/10/21> 1st Release
//! \author MidnightCow
//! \copyright
//!
//! Copyright (c) 2013, WIZnet Co., LTD.
//! All rights reserved.
//!
//! Redistribution and use in source and binary forms, with or without
//! modification, are permitted provided that the following conditions
//! are met:
//!
//! * Redistributions of source code must retain the above copyright
//! notice, this list of conditions and the following disclaimer.
//! * Redistributions in binary form must reproduce the above copyright
//! notice, this list of conditions and the following disclaimer in the
//! documentation and/or other materials provided with the distribution.
//! * Neither the name of the <ORGANIZATION> nor the names of its
//! contributors may be used to endorse or promote products derived
//! from this software without specific prior written permission.
//!
//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
//! THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************
/**
* @defgroup WIZnet_socket_APIs 1. WIZnet socket APIs
* @brief WIZnet socket APIs are based on Berkeley socket APIs, thus it has much similar name and interface.
* But there is a little bit of difference.
* @details
* <b> Comparison between WIZnet and Berkeley SOCKET APIs </b>
* <table>
* <tr> <td><b>API</b></td> <td><b>WIZnet</b></td> <td><b>Berkeley</b></td> </tr>
* <tr> <td>socket()</td> <td>O</td> <td>O</td> </tr>
* <tr> <td><b>bind()</b></td> <td>X</td> <td>O</td> </tr>
* <tr> <td><b>listen()</b></td> <td>O</td> <td>O</td> </tr>
* <tr> <td><b>connect()</b></td> <td>O</td> <td>O</td> </tr>
* <tr> <td><b>accept()</b></td> <td>X</td> <td>O</td> </tr>
* <tr> <td><b>recv()</b></td> <td>O</td> <td>O</td> </tr>
* <tr> <td><b>send()</b></td> <td>O</td> <td>O</td> </tr>
* <tr> <td><b>recvfrom()</b></td> <td>O</td> <td>O</td> </tr>
* <tr> <td><b>sendto()</b></td> <td>O</td> <td>O</td> </tr>
* <tr> <td><b>closesocket()</b></td> <td>O<br>close() & disconnect()</td> <td>O</td> </tr>
* </table>
* There are @b bind() and @b accept() functions in @b Berkeley SOCKET API but,
* not in @b WIZnet SOCKET API. Because socket() of WIZnet is not only creating a SOCKET but also binding a local port number,
* and listen() of WIZnet is not only listening to connection request from client but also accepting the connection request. \n
* When you program "TCP SERVER" with Berkeley SOCKET API, you can use only one listen port.
* When the listen SOCKET accepts a connection request from a client, it keeps listening.
* After accepting the connection request, a new SOCKET is created and the new SOCKET is used in communication with the client. \n
* Following figure shows network flow diagram by Berkeley SOCKET API.
* @image html Berkeley_SOCKET.jpg "<Berkeley SOCKET API>"
* But, When you program "TCP SERVER" with WIZnet SOCKET API, you can use as many as 8 listen SOCKET with same port number. \n
* Because there's no accept() in WIZnet SOCKET APIs, when the listen SOCKET accepts a connection request from a client,
* it is changed in order to communicate with the client.
* And the changed SOCKET is not listening any more and is dedicated for communicating with the client. \n
* If there're many listen SOCKET with same listen port number and a client requests a connection,
* the SOCKET which has the smallest SOCKET number accepts the request and is changed as communication SOCKET. \n
* Following figure shows network flow diagram by WIZnet SOCKET API.
* @image html WIZnet_SOCKET.jpg "<WIZnet SOCKET API>"
*/
#ifndef _SOCKET_H_
#define _SOCKET_H_
#include "wizchip_conf.h"
#define SOCKET uint8_t ///< SOCKET type define for legacy driver
#define SOCK_OK 1 ///< Result is OK about socket process.
#define SOCK_BUSY 0 ///< Socket is busy on processing the operation. Valid only Non-block IO Mode.
#define SOCK_FATAL -1000 ///< Result is fatal error about socket process.
#define SOCK_ERROR 0
#define SOCKERR_SOCKNUM (SOCK_ERROR - 1) ///< Invalid socket number
#define SOCKERR_SOCKOPT (SOCK_ERROR - 2) ///< Invalid socket option
#define SOCKERR_SOCKINIT (SOCK_ERROR - 3) ///< Socket is not initialized
#define SOCKERR_SOCKCLOSED (SOCK_ERROR - 4) ///< Socket unexpectedly closed.
#define SOCKERR_SOCKMODE (SOCK_ERROR - 5) ///< Invalid socket mode for socket operation.
#define SOCKERR_SOCKFLAG (SOCK_ERROR - 6) ///< Invalid socket flag
#define SOCKERR_SOCKSTATUS (SOCK_ERROR - 7) ///< Invalid socket status for socket operation.
#define SOCKERR_ARG (SOCK_ERROR - 10) ///< Invalid argument.
#define SOCKERR_PORTZERO (SOCK_ERROR - 11) ///< Port number is zero
#define SOCKERR_IPINVALID (SOCK_ERROR - 12) ///< Invalid IP address
#define SOCKERR_TIMEOUT (SOCK_ERROR - 13) ///< Timeout occurred
#define SOCKERR_DATALEN (SOCK_ERROR - 14) ///< Data length is zero or greater than buffer max size.
#define SOCKERR_BUFFER (SOCK_ERROR - 15) ///< Socket buffer is not enough for data communication.
#define SOCKFATAL_PACKLEN (SOCK_FATAL - 1) ///< Invalid packet length. Fatal Error.
/*
* SOCKET FLAG
*/
#define SF_ETHER_OWN (Sn_MR_MFEN) ///< In \ref Sn_MR_MACRAW, Receive only the packet as broadcast, multicast and own packet
#define SF_IGMP_VER2 (Sn_MR_MC) ///< In \ref Sn_MR_UDP with \ref SF_MULTI_ENABLE, Select IGMP version 2.
#define SF_TCP_NODELAY (Sn_MR_ND) ///< In \ref Sn_MR_TCP, Use to nodelayed ack.
#define SF_MULTI_ENABLE (Sn_MR_MULTI) ///< In \ref Sn_MR_UDP, Enable multicast mode.
#if _WIZCHIP_ == 5500
#define SF_BROAD_BLOCK (Sn_MR_BCASTB) ///< In \ref Sn_MR_UDP or \ref Sn_MR_MACRAW, Block broadcast packet. Valid only in W5500
#define SF_MULTI_BLOCK (Sn_MR_MMB) ///< In \ref Sn_MR_MACRAW, Block multicast packet. Valid only in W5500
#define SF_IPv6_BLOCK (Sn_MR_MIP6B) ///< In \ref Sn_MR_MACRAW, Block IPv6 packet. Valid only in W5500
#define SF_UNI_BLOCK (Sn_MR_UCASTB) ///< In \ref Sn_MR_UDP with \ref SF_MULTI_ENABLE. Valid only in W5500
#endif
#define SF_IO_NONBLOCK 0x01 ///< Socket nonblock io mode. It used parameter in \ref socket().
/*
* UDP & MACRAW Packet Infomation
*/
#define PACK_FIRST 0x80 ///< In Non-TCP packet, It indicates to start receiving a packet.
#define PACK_REMAINED 0x01 ///< In Non-TCP packet, It indicates to remain a packet to be received.
#define PACK_COMPLETED 0x00 ///< In Non-TCP packet, It indicates to complete to receive a packet.
/**
* @ingroup WIZnet_socket_APIs
* @brief Open a socket.
* @details Initializes the socket with 'sn' passed as parameter and open.
*
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @param protocol Protocol type to operate such as TCP, UDP and MACRAW.
* @param port Port number to be bined.
* @param flag Socket flags as \ref SF_ETHER_OWN, \ref SF_IGMP_VER2, \ref SF_TCP_NODELAY, \ref SF_MULTI_ENABLE, \ref SF_IO_NONBLOCK and so on.\n
* Valid flags only in W5500 : @ref SF_BROAD_BLOCK, @ref SF_MULTI_BLOCK, @ref SF_IPv6_BLOCK, and @ref SF_UNI_BLOCK.
* @sa Sn_MR
*
* @return @b Success : The socket number @b 'sn' passed as parameter\n
* @b Fail :\n @ref SOCKERR_SOCKNUM - Invalid socket number\n
* @ref SOCKERR_SOCKMODE - Not support socket mode as TCP, UDP, and so on. \n
* @ref SOCKERR_SOCKFLAG - Invaild socket flag.
*/
int8_t socket(uint8_t sn, uint8_t protocol, uint16_t port, uint8_t flag);
/**
* @ingroup WIZnet_socket_APIs
* @brief Close a socket.
* @details It closes the socket with @b'sn' passed as parameter.
*
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
*
* @return @b Success : @ref SOCK_OK \n
* @b Fail : @ref SOCKERR_SOCKNUM - Invalid socket number
*/
int8_t close(uint8_t sn);
/**
* @ingroup WIZnet_socket_APIs
* @brief Listen to a connection request from a client.
* @details It is listening to a connection request from a client.
* If connection request is accepted successfully, the connection is established. Socket sn is used in passive(server) mode.
*
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @return @b Success : @ref SOCK_OK \n
* @b Fail :\n @ref SOCKERR_SOCKINIT - Socket is not initialized \n
* @ref SOCKERR_SOCKCLOSED - Socket closed unexpectedly.
*/
int8_t listen(uint8_t sn);
/**
* @ingroup WIZnet_socket_APIs
* @brief Try to connect a server.
* @details It requests connection to the server with destination IP address and port number passed as parameter.\n
* @note It is valid only in TCP client mode.
* In block io mode, it does not return until connection is completed.
* In Non-block io mode, it return @ref SOCK_BUSY immediately.
*
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @param addr Pointer variable of destination IP address. It should be allocated 4 bytes.
* @param port Destination port number.
*
* @return @b Success : @ref SOCK_OK \n
* @b Fail :\n @ref SOCKERR_SOCKNUM - Invalid socket number\n
* @ref SOCKERR_SOCKMODE - Invalid socket mode\n
* @ref SOCKERR_SOCKINIT - Socket is not initialized\n
* @ref SOCKERR_IPINVALID - Wrong server IP address\n
* @ref SOCKERR_PORTZERO - Server port zero\n
* @ref SOCKERR_TIMEOUT - Timeout occurred during request connection\n
* @ref SOCK_BUSY - In non-block io mode, it returned immediately\n
*/
int8_t connect(uint8_t sn, uint8_t * addr, uint16_t port);
/**
* @ingroup WIZnet_socket_APIs
* @brief Try to disconnect a connection socket.
* @details It sends request message to disconnect the TCP socket 'sn' passed as parameter to the server or client.
* @note It is valid only in TCP server or client mode. \n
* In block io mode, it does not return until disconnection is completed. \n
* In Non-block io mode, it return @ref SOCK_BUSY immediately. \n
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @return @b Success : @ref SOCK_OK \n
* @b Fail :\n @ref SOCKERR_SOCKNUM - Invalid socket number \n
* @ref SOCKERR_SOCKMODE - Invalid operation in the socket \n
* @ref SOCKERR_TIMEOUT - Timeout occurred \n
* @ref SOCK_BUSY - Socket is busy.
*/
int8_t disconnect(uint8_t sn);
/**
* @ingroup WIZnet_socket_APIs
* @brief Send data to the connected peer in TCP socket.
* @details It is used to send outgoing data to the connected socket.
* @note It is valid only in TCP server or client mode. It can't send data greater than socket buffer size. \n
* In block io mode, It doesn't return until data send is completed - socket buffer size is greater than data. \n
* In non-block io mode, It return @ref SOCK_BUSY immediately when socket buffer is not enough. \n
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @param buf Pointer buffer containing data to be sent.
* @param len The byte length of data in buf.
* @return @b Success : The sent data size \n
* @b Fail : \n @ref SOCKERR_SOCKSTATUS - Invalid socket status for socket operation \n
* @ref SOCKERR_TIMEOUT - Timeout occurred \n
* @ref SOCKERR_SOCKMODE - Invalid operation in the socket \n
* @ref SOCKERR_SOCKNUM - Invalid socket number \n
* @ref SOCKERR_DATALEN - zero data length \n
* @ref SOCK_BUSY - Socket is busy.
*/
int32_t send(uint8_t sn, uint8_t * buf, uint16_t len);
/**
* @ingroup WIZnet_socket_APIs
* @brief Receive data from the connected peer.
* @details It is used to read incoming data from the connected socket.\n
* It waits for data as much as the application wants to receive.
* @note It is valid only in TCP server or client mode. It can't receive data greater than socket buffer size. \n
* In block io mode, it doesn't return until data reception is completed - data is filled as <I>len</I> in socket buffer. \n
* In non-block io mode, it return @ref SOCK_BUSY immediately when <I>len</I> is greater than data size in socket buffer. \n
*
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @param buf Pointer buffer to read incoming data.
* @param len The max data length of data in buf.
* @return @b Success : The real received data size \n
* @b Fail :\n
* @ref SOCKERR_SOCKSTATUS - Invalid socket status for socket operation \n
* @ref SOCKERR_SOCKMODE - Invalid operation in the socket \n
* @ref SOCKERR_SOCKNUM - Invalid socket number \n
* @ref SOCKERR_DATALEN - zero data length \n
* @ref SOCK_BUSY - Socket is busy.
*/
int32_t recv(uint8_t sn, uint8_t * buf, uint16_t len);
/**
* @ingroup WIZnet_socket_APIs
* @brief Sends datagram to the peer with destination IP address and port number passed as parameter.
* @details It sends datagram of UDP or MACRAW to the peer with destination IP address and port number passed as parameter.\n
* Even if the connectionless socket has been previously connected to a specific address,
* the address and port number parameters override the destination address for that particular datagram only.
* @note In block io mode, It doesn't return until data send is completed - socket buffer size is greater than <I>len</I>.
* In non-block io mode, It return @ref SOCK_BUSY immediately when socket buffer is not enough.
*
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @param buf Pointer buffer to send outgoing data.
* @param len The byte length of data in buf.
* @param addr Pointer variable of destination IP address. It should be allocated 4 bytes.
* @param port Destination port number.
*
* @return @b Success : The sent data size \n
* @b Fail :\n @ref SOCKERR_SOCKNUM - Invalid socket number \n
* @ref SOCKERR_SOCKMODE - Invalid operation in the socket \n
* @ref SOCKERR_SOCKSTATUS - Invalid socket status for socket operation \n
* @ref SOCKERR_DATALEN - zero data length \n
* @ref SOCKERR_IPINVALID - Wrong server IP address\n
* @ref SOCKERR_PORTZERO - Server port zero\n
* @ref SOCKERR_SOCKCLOSED - Socket unexpectedly closed \n
* @ref SOCKERR_TIMEOUT - Timeout occurred \n
* @ref SOCK_BUSY - Socket is busy.
*/
int32_t sendto(uint8_t sn, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t port);
/**
* @ingroup WIZnet_socket_APIs
* @brief Receive datagram of UDP or MACRAW
* @details This function is an application I/F function which is used to receive the data in other then TCP mode. \n
* This function is used to receive UDP and MAC_RAW mode, and handle the header as well.
* This function can divide to received the packet data.
* On the MACRAW SOCKET, the addr and port parameters are ignored.
* @note In block io mode, it doesn't return until data reception is completed - data is filled as <I>len</I> in socket buffer
* In non-block io mode, it return @ref SOCK_BUSY immediately when <I>len</I> is greater than data size in socket buffer.
*
* @param sn Socket number. It should be <b>0 ~ @ref \_WIZCHIP_SOCK_NUM_</b>.
* @param buf Pointer buffer to read incoming data.
* @param len The max data length of data in buf.
* When the received packet size <= len, receives data as packet sized.
* When others, receives data as len.
* @param addr Pointer variable of destination IP address. It should be allocated 4 bytes.
* It is valid only when the first call recvfrom for receiving the packet.
* When it is valid, @ref packinfo[7] should be set as '1' after call @ref getsockopt(sn, SO_PACKINFO, &packinfo).
* @param port Pointer variable of destination port number.
* It is valid only when the first call recvform for receiving the packet.
* When it is valid, @ref packinfo[7] should be set as '1' after call @ref getsockopt(sn, SO_PACKINFO, &packinfo).
*
* @return @b Success : This function return real received data size for success.\n
* @b Fail : @ref SOCKERR_DATALEN - zero data length \n
* @ref SOCKERR_SOCKMODE - Invalid operation in the socket \n
* @ref SOCKERR_SOCKNUM - Invalid socket number \n
* @ref SOCKBUSY - Socket is busy.
*/
int32_t recvfrom(uint8_t sn, uint8_t * buf, uint16_t len, uint8_t * addr, uint16_t *port);
/////////////////////////////
// SOCKET CONTROL & OPTION //
/////////////////////////////
#define SOCK_IO_BLOCK 0 ///< Socket Block IO Mode in @ref setsockopt().
#define SOCK_IO_NONBLOCK 1 ///< Socket Non-block IO Mode in @ref setsockopt().
/**
* @defgroup DATA_TYPE DATA TYPE
*/
/**
* @ingroup DATA_TYPE
* @brief The kind of Socket Interrupt.
* @sa Sn_IR, Sn_IMR, setSn_IR(), getSn_IR(), setSn_IMR(), getSn_IMR()
*/
typedef enum
{
SIK_CONNECTED = (1 << 0), ///< connected
SIK_DISCONNECTED = (1 << 1), ///< disconnected
SIK_RECEIVED = (1 << 2), ///< data received
SIK_TIMEOUT = (1 << 3), ///< timeout occurred
SIK_SENT = (1 << 4), ///< send ok
SIK_ALL = 0x1F, ///< all interrupt
}sockint_kind;
/**
* @ingroup DATA_TYPE
* @brief The type of @ref ctlsocket().
*/
typedef enum
{
CS_SET_IOMODE, ///< set socket IO mode with @ref SOCK_IO_BLOCK or @ref SOCK_IO_NONBLOCK
CS_GET_IOMODE, ///< get socket IO mode
CS_GET_MAXTXBUF, ///< get the size of socket buffer allocated in TX memory
CS_GET_MAXRXBUF, ///< get the size of socket buffer allocated in RX memory
CS_CLR_INTERRUPT, ///< clear the interrupt of socket with @ref sockint_kind
CS_GET_INTERRUPT, ///< get the socket interrupt. refer to @ref sockint_kind
CS_SET_INTMASK, ///< set the interrupt mask of socket with @ref sockint_kind
CS_GET_INTMASK ///< get the masked interrupt of socket. refer to @ref sockint_kind
}ctlsock_type;
/**
* @ingroup DATA_TYPE
* @brief The type of socket option in @ref setsockopt() or @ref getsockopt()
*/
typedef enum
{
SO_FLAG, ///< Valid only in getsockopt(), For set flag of socket refer to <I>flag</I> in @ref socket().
SO_TTL, ///< Set/Get TTL. @ref Sn_TTL ( @ref setSn_TTL(), @ref getSn_TTL() )
SO_TOS, ///< Set/Get TOS. @ref Sn_TOS ( @ref setSn_TOS(), @ref getSn_TOS() )
SO_MSS, ///< Set/Get MSS. @ref Sn_MSSR ( @ref setSn_MSSR(), @ref getSn_MSSR() )
SO_DESTIP, ///< Set/Get the destination IP address. @ref Sn_DIPR ( @ref setSn_DIPR(), @ref getSn_DIPR() )
SO_DESTPORT, ///< Set/Get the destination Port number. @ref Sn_DPORT ( @ref setSn_DPORT(), @ref getSn_DPORT() )
#if _WIZCHIP_ != 5100
SO_KEEPALIVESEND, ///< Valid only in setsockopt. Manually send keep-alive packet in TCP mode
#if _WIZCHIP_ > 5200
SO_KEEPALIVEAUTO, ///< Set/Get keep-alive auto transmission timer in TCP mode
#endif
#endif
SO_SENDBUF, ///< Valid only in getsockopt. Get the free data size of Socekt TX buffer. @ref Sn_TX_FSR, @ref getSn_TX_FSR()
SO_RECVBUF, ///< Valid only in getsockopt. Get the received data size in socket RX buffer. @ref Sn_RX_RSR, @ref getSn_RX_RSR()
SO_STATUS, ///< Valid only in getsockopt. Get the socket status. @ref Sn_SR, @ref getSn_SR()
SO_REMAINSIZE, ///< Valid only in getsockopt. Get the remained packet size in other then TCP mode.
SO_PACKINFO ///< Valid only in getsockopt. Get the packet information as @ref PACK_FIRST, @ref PACK_REMAINED, and @ref PACK_COMPLETED in other then TCP mode.
}sockopt_type;
/**
* @ingroup WIZnet_socket_APIs
* @brief Control socket.
* @details Control IO mode, Interrupt & Mask of socket and get the socket buffer information.
* Refer to @ref ctlsock_type.
* @param sn socket number
* @param cstype type of control socket. refer to @ref ctlsock_type.
* @param arg Data type and value is determined according to @ref ctlsock_type. \n
* <table>
* <tr> <td> @b cstype </td> <td> @b data type</td><td>@b value</td></tr>
* <tr> <td> @ref CS_SET_IOMODE \n @ref CS_GET_IOMODE </td> <td> uint8_t </td><td>@ref SOCK_IO_BLOCK @ref SOCK_IO_NONBLOCK</td></tr>
* <tr> <td> @ref CS_GET_MAXTXBUF \n @ref CS_GET_MAXRXBUF </td> <td> uint16_t </td><td> 0 ~ 16K </td></tr>
* <tr> <td> @ref CS_CLR_INTERRUPT \n @ref CS_GET_INTERRUPT \n @ref CS_SET_INTMASK \n @ref CS_GET_INTMASK </td> <td> @ref sockint_kind </td><td> @ref SIK_CONNECTED, etc. </td></tr>
* </table>
* @return @b Success @ref SOCK_OK \n
* @b fail @ref SOCKERR_ARG - Invalid argument\n
*/
int8_t ctlsocket(uint8_t sn, ctlsock_type cstype, void* arg);
/**
* @ingroup WIZnet_socket_APIs
* @brief set socket options
* @details Set socket option like as TTL, MSS, TOS, and so on. Refer to @ref sockopt_type.
*
* @param sn socket number
* @param sotype socket option type. refer to @ref sockopt_type
* @param arg Data type and value is determined according to <I>sotype</I>. \n
* <table>
* <tr> <td> @b sotype </td> <td> @b data type</td><td>@b value</td></tr>
* <tr> <td> @ref SO_TTL </td> <td> uint8_t </td><td> 0 ~ 255 </td> </tr>
* <tr> <td> @ref SO_TOS </td> <td> uint8_t </td><td> 0 ~ 255 </td> </tr>
* <tr> <td> @ref SO_MSS </td> <td> uint16_t </td><td> 0 ~ 65535 </td> </tr>
* <tr> <td> @ref SO_DESTIP </td> <td> uint8_t[4] </td><td> </td></tr>
* <tr> <td> @ref SO_DESTPORT </td> <td> uint16_t </td><td> 0 ~ 65535 </td></tr>
* <tr> <td> @ref SO_KEEPALIVESEND </td> <td> null </td><td> null </td></tr>
* <tr> <td> @ref SO_KEEPALIVEAUTO </td> <td> uint8_t </td><td> 0 ~ 255 </td></tr>
* </table>
* @return
* - @b Success : @ref SOCK_OK \n
* - @b Fail
* - @ref SOCKERR_SOCKNUM - Invalid Socket number \n
* - @ref SOCKERR_SOCKMODE - Invalid socket mode \n
* - @ref SOCKERR_SOCKOPT - Invalid socket option or its value \n
* - @ref SOCKERR_TIMEOUT - Timeout occurred when sending keep-alive packet \n
*/
int8_t setsockopt(uint8_t sn, sockopt_type sotype, void* arg);
/**
* @ingroup WIZnet_socket_APIs
* @brief get socket options
* @details Get socket option like as FLAG, TTL, MSS, and so on. Refer to @ref sockopt_type
* @param sn socket number
* @param sotype socket option type. refer to @ref sockopt_type
* @param arg Data type and value is determined according to <I>sotype</I>. \n
* <table>
* <tr> <td> @b sotype </td> <td>@b data type</td><td>@b value</td></tr>
* <tr> <td> @ref SO_FLAG </td> <td> uint8_t </td><td> @ref SF_ETHER_OWN, etc... </td> </tr>
* <tr> <td> @ref SO_TOS </td> <td> uint8_t </td><td> 0 ~ 255 </td> </tr>
* <tr> <td> @ref SO_MSS </td> <td> uint16_t </td><td> 0 ~ 65535 </td> </tr>
* <tr> <td> @ref SO_DESTIP </td> <td> uint8_t[4] </td><td> </td></tr>
* <tr> <td> @ref SO_DESTPORT </td> <td> uint16_t </td><td> </td></tr>
* <tr> <td> @ref SO_KEEPALIVEAUTO </td> <td> uint8_t </td><td> 0 ~ 255 </td></tr>
* <tr> <td> @ref SO_SENDBUF </td> <td> uint16_t </td><td> 0 ~ 65535 </td></tr>
* <tr> <td> @ref SO_RECVBUF </td> <td> uint16_t </td><td> 0 ~ 65535 </td></tr>
* <tr> <td> @ref SO_STATUS </td> <td> uint8_t </td><td> @ref SOCK_ESTABLISHED, etc.. </td></tr>
* <tr> <td> @ref SO_REMAINSIZE </td> <td> uint16_t </td><td> 0~ 65535 </td></tr>
* <tr> <td> @ref SO_PACKINFO </td> <td> uint8_t </td><td> @ref PACK_FIRST, etc... </td></tr>
* </table>
* @return
* - @b Success : @ref SOCK_OK \n
* - @b Fail
* - @ref SOCKERR_SOCKNUM - Invalid Socket number \n
* - @ref SOCKERR_SOCKOPT - Invalid socket option or its value \n
* - @ref SOCKERR_SOCKMODE - Invalid socket mode \n
* @note
* The option as PACK_REMAINED and SO_PACKINFO is valid only in NON-TCP mode and after call @ref recvfrom(). \n
* When SO_PACKINFO value is PACK_FIRST and the return value of recvfrom() is zero,
* This means the zero byte UDP data(UDP Header only) received.
*/
int8_t getsockopt(uint8_t sn, sockopt_type sotype, void* arg);
#endif // _SOCKET_H_
drivers/wiznet5k/ethernet/w5500/w5500.c
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//*****************************************************************************
//
//! \file w5500.c
//! \brief W5500 HAL Interface.
//! \version 1.0.1
//! \date 2013/10/21
//! \par Revision history
//! <2014/05/01> V1.0.2
//! 1. Implicit type casting -> Explicit type casting. Refer to M20140501
//! Fixed the problem on porting into under 32bit MCU
//! Issued by Mathias ClauBen, wizwiki forum ID Think01 and bobh
//! Thank for your interesting and serious advices.
//! <2013/10/21> 1st Release
//! <2013/12/20> V1.0.1
//! 1. Remove warning
//! 2. WIZCHIP_READ_BUF WIZCHIP_WRITE_BUF in case _WIZCHIP_IO_MODE_SPI_FDM_
//! for loop optimized(removed). refer to M20131220
//! \author MidnightCow
//! \copyright
//!
//! Copyright (c) 2013, WIZnet Co., LTD.
//! All rights reserved.
//!
//! Redistribution and use in source and binary forms, with or without
//! modification, are permitted provided that the following conditions
//! are met:
//!
//! * Redistributions of source code must retain the above copyright
//! notice, this list of conditions and the following disclaimer.
//! * Redistributions in binary form must reproduce the above copyright
//! notice, this list of conditions and the following disclaimer in the
//! documentation and/or other materials provided with the distribution.
//! * Neither the name of the <ORGANIZATION> nor the names of its
//! contributors may be used to endorse or promote products derived
//! from this software without specific prior written permission.
//!
//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
//! THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************
//#include <stdio.h>
#include "w5500.h"
#define _W5500_SPI_VDM_OP_ 0x00
#define _W5500_SPI_FDM_OP_LEN1_ 0x01
#define _W5500_SPI_FDM_OP_LEN2_ 0x02
#define _W5500_SPI_FDM_OP_LEN4_ 0x03
////////////////////////////////////////////////////
uint8_t WIZCHIP_READ(uint32_t AddrSel)
{
uint8_t ret;
uint8_t spi_data[3];
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
AddrSel |= (_W5500_SPI_READ_ | _W5500_SPI_VDM_OP_);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x00FF0000) >> 16);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x0000FF00) >> 8);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x000000FF) >> 0);
//ret = WIZCHIP.IF.SPI._read_byte();
spi_data[0] = (AddrSel & 0x00FF0000) >> 16;
spi_data[1] = (AddrSel & 0x0000FF00) >> 8;
spi_data[2] = (AddrSel & 0x000000FF) >> 0;
Chip_SSP_WriteFrames_Blocking(LPC_SSP0, spi_data, 3);
Chip_SSP_ReadFrames_Blocking(LPC_SSP0, &ret, 1);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
return ret;
}
void WIZCHIP_WRITE(uint32_t AddrSel, uint8_t wb )
{
uint8_t spi_data[4];
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
AddrSel |= (_W5500_SPI_WRITE_ | _W5500_SPI_VDM_OP_);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x00FF0000) >> 16);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x0000FF00) >> 8);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x000000FF) >> 0);
//WIZCHIP.IF.SPI._write_byte(wb);
spi_data[0] = (AddrSel & 0x00FF0000) >> 16;
spi_data[1] = (AddrSel & 0x0000FF00) >> 8;
spi_data[2] = (AddrSel & 0x000000FF) >> 0;
spi_data[3] = wb;
Chip_SSP_WriteFrames_Blocking(LPC_SSP0, spi_data, 4);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
}
void WIZCHIP_READ_BUF (uint32_t AddrSel, uint8_t* pBuf, uint16_t len)
{
uint8_t spi_data[3];
//uint16_t i;
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
AddrSel |= (_W5500_SPI_READ_ | _W5500_SPI_VDM_OP_);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x00FF0000) >> 16);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x0000FF00) >> 8);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x000000FF) >> 0);
//for(i = 0; i < len; i++)
// pBuf[i] = WIZCHIP.IF.SPI._read_byte();
spi_data[0] = (AddrSel & 0x00FF0000) >> 16;
spi_data[1] = (AddrSel & 0x0000FF00) >> 8;
spi_data[2] = (AddrSel & 0x000000FF) >> 0;
Chip_SSP_WriteFrames_Blocking(LPC_SSP0, spi_data, 3);
Chip_SSP_ReadFrames_Blocking(LPC_SSP0, pBuf, len);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
}
void WIZCHIP_WRITE_BUF(uint32_t AddrSel, uint8_t* pBuf, uint16_t len)
{
uint8_t spi_data[3];
//uint16_t i;
WIZCHIP_CRITICAL_ENTER();
WIZCHIP.CS._select();
AddrSel |= (_W5500_SPI_WRITE_ | _W5500_SPI_VDM_OP_);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x00FF0000) >> 16);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x0000FF00) >> 8);
//WIZCHIP.IF.SPI._write_byte((AddrSel & 0x000000FF) >> 0);
//for(i = 0; i < len; i++)
// WIZCHIP.IF.SPI._write_byte(pBuf[i]);
spi_data[0] = (AddrSel & 0x00FF0000) >> 16;
spi_data[1] = (AddrSel & 0x0000FF00) >> 8;
spi_data[2] = (AddrSel & 0x000000FF) >> 0;
Chip_SSP_WriteFrames_Blocking(LPC_SSP0, spi_data, 3);
Chip_SSP_WriteFrames_Blocking(LPC_SSP0, pBuf, len);
WIZCHIP.CS._deselect();
WIZCHIP_CRITICAL_EXIT();
}
uint16_t getSn_TX_FSR(uint8_t sn)
{
uint16_t val=0,val1=0;
do
{
val1 = WIZCHIP_READ(Sn_TX_FSR(sn));
val1 = (val1 << 8) + WIZCHIP_READ(WIZCHIP_OFFSET_INC(Sn_TX_FSR(sn),1));
if (val1 != 0)
{
val = WIZCHIP_READ(Sn_TX_FSR(sn));
val = (val << 8) + WIZCHIP_READ(WIZCHIP_OFFSET_INC(Sn_TX_FSR(sn),1));
}
}while (val != val1);
return val;
}
uint16_t getSn_RX_RSR(uint8_t sn)
{
uint16_t val=0,val1=0;
do
{
val1 = WIZCHIP_READ(Sn_RX_RSR(sn));
val1 = (val1 << 8) + WIZCHIP_READ(WIZCHIP_OFFSET_INC(Sn_RX_RSR(sn),1));
if (val1 != 0)
{
val = WIZCHIP_READ(Sn_RX_RSR(sn));
val = (val << 8) + WIZCHIP_READ(WIZCHIP_OFFSET_INC(Sn_RX_RSR(sn),1));
}
}while (val != val1);
return val;
}
void wiz_send_data(uint8_t sn, uint8_t *wizdata, uint16_t len)
{
uint16_t ptr = 0;
uint32_t addrsel = 0;
if(len == 0) return;
ptr = getSn_TX_WR(sn);
//M20140501 : implict type casting -> explict type casting
//addrsel = (ptr << 8) + (WIZCHIP_TXBUF_BLOCK(sn) << 3);
addrsel = ((uint32_t)ptr << 8) + (WIZCHIP_TXBUF_BLOCK(sn) << 3);
//
WIZCHIP_WRITE_BUF(addrsel,wizdata, len);
ptr += len;
setSn_TX_WR(sn,ptr);
}
void wiz_recv_data(uint8_t sn, uint8_t *wizdata, uint16_t len)
{
uint16_t ptr = 0;
uint32_t addrsel = 0;
if(len == 0) return;
ptr = getSn_RX_RD(sn);
//M20140501 : implict type casting -> explict type casting
//addrsel = ((ptr << 8) + (WIZCHIP_RXBUF_BLOCK(sn) << 3);
addrsel = ((uint32_t)ptr << 8) + (WIZCHIP_RXBUF_BLOCK(sn) << 3);
//
WIZCHIP_READ_BUF(addrsel, wizdata, len);
ptr += len;
setSn_RX_RD(sn,ptr);
}
void wiz_recv_ignore(uint8_t sn, uint16_t len)
{
uint16_t ptr = 0;
ptr = getSn_RX_RD(sn);
ptr += len;
setSn_RX_RD(sn,ptr);
}
drivers/wiznet5k/ethernet/w5500/w5500.h
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drivers/wiznet5k/ethernet/wizchip_conf.c
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drivers/wiznet5k/ethernet/wizchip_conf.h
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drivers/wiznet5k/internet/dhcp/dhcp.c
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drivers/wiznet5k/internet/dhcp/dhcp.h
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//*****************************************************************************
//
//! \file dhcp.h
//! \brief DHCP APIs Header file.
//! \details Processig DHCP protocol as DISCOVER, OFFER, REQUEST, ACK, NACK and DECLINE.
//! \version 1.1.0
//! \date 2013/11/18
//! \par Revision history
//! <2013/11/18> 1st Release
//! <2012/12/20> V1.1.0
//! 1. Move unreferenced DEFINE to dhcp.c
//! <2012/12/26> V1.1.1
//! \author Eric Jung & MidnightCow
//! \copyright
//!
//! Copyright (c) 2013, WIZnet Co., LTD.
//! All rights reserved.
//!
//! Redistribution and use in source and binary forms, with or without
//! modification, are permitted provided that the following conditions
//! are met:
//!
//! * Redistributions of source code must retain the above copyright
//! notice, this list of conditions and the following disclaimer.
//! * Redistributions in binary form must reproduce the above copyright
//! notice, this list of conditions and the following disclaimer in the
//! documentation and/or other materials provided with the distribution.
//! * Neither the name of the <ORGANIZATION> nor the names of its
//! contributors may be used to endorse or promote products derived
//! from this software without specific prior written permission.
//!
//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
//! THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************
#ifndef _DHCP_H_
#define _DHCP_H_
/*
* @brief
* @details If you want to display debug & processing message, Define _DHCP_DEBUG_
* @note If defined, it depends on <stdio.h>
*/
//#define _DHCP_DEBUG_
/* Retry to processing DHCP */
#define MAX_DHCP_RETRY 2 ///< Maximum retry count
#define DHCP_WAIT_TIME 10 ///< Wait Time 10s
/* UDP port numbers for DHCP */
#define DHCP_SERVER_PORT 67 ///< DHCP server port number
#define DHCP_CLIENT_PORT 68 ///< DHCP client port number
#define MAGIC_COOKIE 0x63825363 ///< Any number. You can be modified it any number
#define DCHP_HOST_NAME "WIZnet\0"
/*
* @brief return value of @ref DHCP_run()
*/
enum
{
DHCP_FAILED = 0, ///< Processing Fail
DHCP_RUNNING, ///< Processing DHCP protocol
DHCP_IP_ASSIGN, ///< First Occupy IP from DHPC server (if cbfunc == null, act as default default_ip_assign)
DHCP_IP_CHANGED, ///< Change IP address by new IP address from DHCP (if cbfunc == null, act as default default_ip_update)
DHCP_IP_LEASED, ///< Stand by
DHCP_STOPPED ///< Stop processing DHCP protocol
};
/*
* @brief DHCP client initialization (outside of the main loop)
* @param s - socket number
* @param buf - buffer for processing DHCP message
*/
void DHCP_init(uint8_t s, uint8_t * buf);
/*
* @brief DHCP 1s Tick Timer handler
* @note SHOULD BE register to your system 1s Tick timer handler
*/
void DHCP_time_handler(void);
/*
* @brief Register call back function
* @param ip_assign - callback func when IP is assigned from DHCP server first
* @param ip_update - callback func when IP is changed
* @prarm ip_conflict - callback func when the assigned IP is conflict with others.
*/
void reg_dhcp_cbfunc(void(*ip_assign)(void), void(*ip_update)(void), void(*ip_conflict)(void));
/*
* @brief DHCP client in the main loop
* @return The value is as the follow \n
* @ref DHCP_FAILED \n
* @ref DHCP_RUNNING \n
* @ref DHCP_IP_ASSIGN \n
* @ref DHCP_IP_CHANGED \n
* @ref DHCP_IP_LEASED \n
* @ref DHCP_STOPPED \n
*
* @note This function is always called by you main task.
*/
uint8_t DHCP_run(void);
/*
* @brief Stop DHCP processing
* @note If you want to restart. call DHCP_init() and DHCP_run()
*/
void DHCP_stop(void);
/* Get Network information assigned from DHCP server */
/*
* @brief Get IP address
* @param ip - IP address to be returned
*/
void getIPfromDHCP(uint8_t* ip);
/*
* @brief Get Gateway address
* @param ip - Gateway address to be returned
*/
void getGWfromDHCP(uint8_t* ip);
/*
* @brief Get Subnet mask value
* @param ip - Subnet mask to be returned
*/
void getSNfromDHCP(uint8_t* ip);
/*
* @brief Get DNS address
* @param ip - DNS address to be returned
*/
void getDNSfromDHCP(uint8_t* ip);
/*
* @brief Get the leased time by DHCP sever
* @return unit 1s
*/
uint32_t getDHCPLeasetime(void);
#endif /* _DHCP_H_ */
drivers/wiznet5k/internet/dns/dns.c
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drivers/wiznet5k/internet/dns/dns.h
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//*****************************************************************************
//
//! \file dns.h
//! \brief DNS APIs Header file.
//! \details Send DNS query & Receive DNS reponse.
//! \version 1.1.0
//! \date 2013/11/18
//! \par Revision history
//! <2013/10/21> 1st Release
//! <2013/12/20> V1.1.0
//! 1. Remove secondary DNS server in DNS_run
//! If 1st DNS_run failed, call DNS_run with 2nd DNS again
//! 2. DNS_timerHandler -> DNS_time_handler
//! 3. Move the no reference define to dns.c
//! 4. Integrated dns.h dns.c & dns_parse.h dns_parse.c into dns.h & dns.c
//! <2013/12/20> V1.1.0
//!
//! \author Eric Jung & MidnightCow
//! \copyright
//!
//! Copyright (c) 2013, WIZnet Co., LTD.
//! All rights reserved.
//!
//! Redistribution and use in source and binary forms, with or without
//! modification, are permitted provided that the following conditions
//! are met:
//!
//! * Redistributions of source code must retain the above copyright
//! notice, this list of conditions and the following disclaimer.
//! * Redistributions in binary form must reproduce the above copyright
//! notice, this list of conditions and the following disclaimer in the
//! documentation and/or other materials provided with the distribution.
//! * Neither the name of the <ORGANIZATION> nor the names of its
//! contributors may be used to endorse or promote products derived
//! from this software without specific prior written permission.
//!
//! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
//! AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//! IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
//! ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
//! LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
//! THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************
#ifndef _DNS_H_
#define _DNS_H_
#include <stdint.h>
/*
* @brief Define it for Debug & Monitor DNS processing.
* @note If defined, it depends on <stdio.h>
*/
//#define _DNS_DEBUG_
#define MAX_DNS_BUF_SIZE 256 ///< maximum size of DNS buffer. */
/*
* @brief Maximum length of your queried Domain name
* @todo SHOULD BE defined it equal as or greater than your Domain name length + null character(1)
* @note SHOULD BE careful to stack overflow because it is allocated 1.5 times as MAX_DOMAIN_NAME in stack.
*/
#define MAX_DOMAIN_NAME 16 // for example "www.google.com"
#define MAX_DNS_RETRY 2 ///< Requery Count
#define DNS_WAIT_TIME 3 ///< Wait response time. unit 1s.
#define IPPORT_DOMAIN 53 ///< DNS server port number
#define DNS_MSG_ID 0x1122 ///< ID for DNS message. You can be modified it any number
/*
* @brief DNS process initialize
* @param s : Socket number for DNS
* @param buf : Buffer for DNS message
*/
void DNS_init(uint8_t s, uint8_t * buf);
/*
* @brief DNS process
* @details Send DNS query and receive DNS response
* @param dns_ip : DNS server ip address
* @param name : Domain name to be queried
* @param ip_from_dns : IP address from DNS server
* @return -1 : failed. @ref MAX_DOMIN_NAME is too small \n
* 0 : failed (Timeout or Parse error)\n
* 1 : success
* @note This function blocks until success or fail. max time = @ref MAX_DNS_RETRY * @ref DNS_WAIT_TIME
*/
int8_t DNS_run(uint8_t * dns_ip, uint8_t * name, uint8_t * ip_from_dns);
/*
* @brief DNS 1s Tick Timer handler
* @note SHOULD BE register to your system 1s Tick timer handler
*/
void DNS_time_handler(void);
#endif /* _DNS_H_ */