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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_
/* Retry to processing DHCP */
#define MAX_DHCP_RETRY 2 ///< Maxium 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 "DuetEthernet"
/*
* @brief return value of @ref DHCP_run()
*/
enum class DhcpRunResult : uint8_t
{
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 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 hname - null-terminated host name string
*/
void DHCP_init(uint8_t s, const char *hname);
/*
* @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.
*/
DhcpRunResult 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_ */
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