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/*
    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

/**
 * @file lwipthread.h
 * @brief LWIP wrapper thread macros and structures.
 * @addtogroup LWIP_THREAD
 * @{
 */

#ifndef LWIPTHREAD_H
#define LWIPTHREAD_H

#include <lwip/opt.h>

/**
 * @brief   lwIP default network interface maximum transmission unit (MTU).
 */
#if !defined(LWIP_NETIF_MTU) || defined(__DOXYGEN__)
#define LWIP_NETIF_MTU                      1500
#endif

/**
 * @brief   Default network interface hostname.
 */
#if !defined(LWIP_NETIF_HOSTNAME_STRING) || defined(__DOXYGEN__)
#define LWIP_NETIF_HOSTNAME_STRING          "lwip"
#endif

/**
 * @brief   Default network interface hostname.
 */
#if !defined(LWIP_THREAD_NAME) || defined(__DOXYGEN__)
#define LWIP_THREAD_NAME                    "lwipthread"
#endif

/**
 * @brief   lwIP thread priority.
 */
#ifndef LWIP_THREAD_PRIORITY
#define LWIP_THREAD_PRIORITY                LOWPRIO
#endif

/**
 * @brief  lwIP thread stack size.
 */
#if !defined(LWIP_THREAD_STACK_SIZE) || defined(__DOXYGEN__)
#define LWIP_THREAD_STACK_SIZE              1400
#endif

/**
 * @brief   Link poll interval.
 */
#if !defined(LWIP_LINK_POLL_INTERVAL) || defined(__DOXYGEN__)
#define LWIP_LINK_POLL_INTERVAL             TIME_S2I(5)
#endif

/**
 *  @brief  IP Address.
 */
#if !defined(LWIP_IPADDR) || defined(__DOXYGEN__)
#define LWIP_IPADDR(p)                      IP4_ADDR(p, 192, 168, 21, 11)
#endif

/**
 * @brief   IP Gateway.
 */
#if !defined(LWIP_GATEWAY) || defined(__DOXYGEN__)
#define LWIP_GATEWAY(p)                     IP4_ADDR(p, 192, 168, 21, 1)
#endif

/**
 * @brief   IP netmask.
 */
#if !defined(LWIP_NETMASK) || defined(__DOXYGEN__)
#define LWIP_NETMASK(p)                     IP4_ADDR(p, 255, 255, 255, 0)
#endif

/**
 * @brief   Transmission timeout.
 */
#if !defined(LWIP_SEND_TIMEOUT) || defined(__DOXYGEN__)
#define LWIP_SEND_TIMEOUT                   100
#endif

/**
 * @brief   Link speed.
 */
#if !defined(LWIP_LINK_SPEED) || defined(__DOXYGEN__)
#define LWIP_LINK_SPEED                     100000000
#endif

/**
 * @brief   MAC Address byte 0.
 */
#if !defined(LWIP_ETHADDR_0) || defined(__DOXYGEN__)
#define LWIP_ETHADDR_0                       0x54
#endif

/**
 * @brief   MAC Address byte 1.
 */
#if !defined(LWIP_ETHADDR_1) || defined(__DOXYGEN__)
#define LWIP_ETHADDR_1                      0x54
#endif

/**
 * @brief   MAC Address byte 2.
 */
#if !defined(LWIP_ETHADDR_2) || defined(__DOXYGEN__)
#define LWIP_ETHADDR_2                      0x08
#endif

/**
 * @brief   MAC Address byte 3.
 */
#if !defined(LWIP_ETHADDR_3) || defined(__DOXYGEN__)
#define LWIP_ETHADDR_3                      0x34
#endif

/**
 * @brief   MAC Address byte 4.
 */
#if !defined(LWIP_ETHADDR_4) || defined(__DOXYGEN__)
#define LWIP_ETHADDR_4                      0x1f
#endif

/**
 * @brief   MAC Address byte 5.
 */
#if !defined(LWIP_ETHADDR_5) || defined(__DOXYGEN__)
#define LWIP_ETHADDR_5                      0x3a
#endif

/**
 * @brief   Interface name byte 0.
 */
#if !defined(LWIP_IFNAME0) || defined(__DOXYGEN__)
#define LWIP_IFNAME0                        'e'
#endif

/**
 * @brief  Interface name byte 1.
 */
#if !defined(LWIP_IFNAME1) || defined(__DOXYGEN__)
#define LWIP_IFNAME1                        'n'
#endif

/**
 *  @brief   Utility macro to define an IPv4 address.
 *
 *  @note    Within the networking subsystem, IPv4 network addresses are
 *           stored with LS byte of network address in MS byte of unsigned int.
 */
#if BYTE_ORDER == LITTLE_ENDIAN
#define IP4_ADDR_VALUE(a,b,c,d)        \
        (((u32_t)((d) & 0xff) << 24) | \
         ((u32_t)((c) & 0xff) << 16) | \
         ((u32_t)((b) & 0xff) << 8)  | \
          (u32_t)((a) & 0xff))
#else
#define IP4_ADDR_VALUE(a,b,c,d)        \
        (((u32_t)((a) & 0xff) << 24) | \
         ((u32_t)((b) & 0xff) << 16) | \
         ((u32_t)((c) & 0xff) << 8)  | \
          (u32_t)((d) & 0xff))
#endif

/**
 *  @brief   Startup network assigning modes.
 */
typedef enum {
#if LWIP_DHCP || defined(__DOXYGEN__)
    /** 
     * @brief   Assign a DHCP given address.
     */
    NET_ADDRESS_DHCP = 1,
#endif
    /**
     * @brief   Assign a statically IPv4 address. 
     */
    NET_ADDRESS_STATIC = 2,
#if LWIP_AUTOIP  || defined(__DOXYGEN__)
    /**
     * @brief   Assign an IPv4 link-Local address.
     */
    NET_ADDRESS_AUTO = 3
#endif
} net_addr_mode_t;

/**
 * @brief   Runtime TCP/IP settings.
 */
typedef struct lwipthread_opts {
  /**
   * @brief   Pointer to MAC address as an array of 6 unsigned bytes.
   */
  uint8_t         *macaddress;
  /**
   * @brief   Network address as 32-bit unsigned integer.
   */
  uint32_t        address;
  /**
   * @brief   Network subnet mask as 32-bit unsigned integer.
   */
  uint32_t        netmask;
  /**
   * @brief   Network gateway as 32-bit unsigned integer.
   */
  uint32_t        gateway;
  /**
   * @brief   Startup network addressing mode - static, DHCP, auto.
   */
  net_addr_mode_t addrMode;
  /**
   * @brief   Host name. If NULL, a default string is used.
   * @note    Not checked for validity. In particular, spaces not allowed.
   */
#if LWIP_NETIF_HOSTNAME || defined(__DOXYGEN__)
  const char              *ourHostName;
#endif
} lwipthread_opts_t;

#ifdef __cplusplus
extern "C" {
#endif
  void lwipInit(const lwipthread_opts_t *opts);
#ifdef __cplusplus
}
#endif

#endif /* LWIPTHREAD_H */

/** @} */