text: /*
   * Copyright (C) 2016 - 2019 Xilinx, Inc.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice,
   *    this list of conditions and the following disclaimer.
   * 2. 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.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 "xparameters.h"
  #include "netif/xadapter.h"
  #include "platform_config.h"
  #include "xil_printf.h"
  
  #if LWIP_IPV6==1
  #include "lwip/ip.h"
  #else
  #if LWIP_DHCP==1
  #include "lwip/dhcp.h"
  #endif
  #endif
  
  #ifdef XPS_BOARD_ZCU102
  #ifdef XPAR_XIICPS_0_DEVICE_ID
  int IicPhyReset(void);
  #endif
  #endif
  
  int main_thread();
  void print_echo_app_header();
  void echo_application_thread(void *);
  
  void lwip_init();
  
  #if LWIP_IPV6==0
  #if LWIP_DHCP==1
  extern volatile int dhcp_timoutcntr;
  err_t dhcp_start(struct netif *netif);
  #endif
  #endif
  
  #define THREAD_STACKSIZE 1024
  
  static struct netif server_netif;
  struct netif *echo_netif;
  
  #if LWIP_IPV6==1
  void print_ip6(char *msg, ip_addr_t *ip)
  {
  	print(msg);
  	xil_printf(" %x:%x:%x:%x:%x:%x:%x:%x\n\r",
  			IP6_ADDR_BLOCK1(&ip->u_addr.ip6),
  			IP6_ADDR_BLOCK2(&ip->u_addr.ip6),
  			IP6_ADDR_BLOCK3(&ip->u_addr.ip6),
  			IP6_ADDR_BLOCK4(&ip->u_addr.ip6),
  			IP6_ADDR_BLOCK5(&ip->u_addr.ip6),
  			IP6_ADDR_BLOCK6(&ip->u_addr.ip6),
  			IP6_ADDR_BLOCK7(&ip->u_addr.ip6),
  			IP6_ADDR_BLOCK8(&ip->u_addr.ip6));
  }
  
  #else
  void
  print_ip(char *msg, ip_addr_t *ip)
  {
  	xil_printf(msg);
  	xil_printf("%d.%d.%d.%d\n\r", ip4_addr1(ip), ip4_addr2(ip),
  			ip4_addr3(ip), ip4_addr4(ip));
  }
  
  void
  print_ip_settings(ip_addr_t *ip, ip_addr_t *mask, ip_addr_t *gw)
  {
  
  	print_ip("Board IP: ", ip);
  	print_ip("Netmask : ", mask);
  	print_ip("Gateway : ", gw);
  }
  
  #endif
  int main()
  {
  	sys_thread_new("main_thrd", (void(*)(void*))main_thread, 0,
  	                THREAD_STACKSIZE,
  	                DEFAULT_THREAD_PRIO);
  	vTaskStartScheduler();
  	while(1);
  	return 0;
  }
  
  void network_thread(void *p)
  {
      struct netif *netif;
      /* the mac address of the board. this should be unique per board */
      unsigned char mac_ethernet_address[] = { 0x00, 0x0a, 0x35, 0x00, 0x01, 0x02 };
  #if LWIP_IPV6==0
      ip_addr_t ipaddr, netmask, gw;
  #if LWIP_DHCP==1
      int mscnt = 0;
  #endif
  #endif
  
      netif = &server_netif;
  
      xil_printf("\r\n\r\n");
      xil_printf("-----lwIP Socket Mode Echo server Demo Application ------\r\n");
  
  #if LWIP_IPV6==0
  #if LWIP_DHCP==0
      /* initialize IP addresses to be used */
      IP4_ADDR(&ipaddr,  192, 168, 1, 10);
      IP4_ADDR(&netmask, 255, 255, 255,  0);
      IP4_ADDR(&gw,      192, 168, 1, 1);
  #endif
  
      /* print out IP settings of the board */
  
  #if LWIP_DHCP==0
      print_ip_settings(&ipaddr, &netmask, &gw);
      /* print all application headers */
  #endif
  
  #if LWIP_DHCP==1
  	ipaddr.addr = 0;
  	gw.addr = 0;
  	netmask.addr = 0;
  #endif
  #endif
  
  #if LWIP_IPV6==0
      /* Add network interface to the netif_list, and set it as default */
      if (!xemac_add(netif, &ipaddr, &netmask, &gw, mac_ethernet_address, PLATFORM_EMAC_BASEADDR)) {
  	xil_printf("Error adding N/W interface\r\n");
  	return;
      }
  #else
      /* Add network interface to the netif_list, and set it as default */
      if (!xemac_add(netif, NULL, NULL, NULL, mac_ethernet_address, PLATFORM_EMAC_BASEADDR)) {
  	xil_printf("Error adding N/W interface\r\n");
  	return;
      }
  
      netif->ip6_autoconfig_enabled = 1;
  
      netif_create_ip6_linklocal_address(netif, 1);
      netif_ip6_addr_set_state(netif, 0, IP6_ADDR_VALID);
  
      print_ip6("\n\rBoard IPv6 address ", &netif->ip6_addr[0].u_addr.ip6);
  #endif
  
      netif_set_default(netif);
  
      /* specify that the network if is up */
      netif_set_up(netif);
  
      /* start packet receive thread - required for lwIP operation */
      sys_thread_new("xemacif_input_thread", (void(*)(void*))xemacif_input_thread, netif,
              THREAD_STACKSIZE,
              DEFAULT_THREAD_PRIO);
  
  #if LWIP_IPV6==0
  #if LWIP_DHCP==1
      dhcp_start(netif);
      while (1) {
  		vTaskDelay(DHCP_FINE_TIMER_MSECS / portTICK_RATE_MS);
  		dhcp_fine_tmr();
  		mscnt += DHCP_FINE_TIMER_MSECS;
  		if (mscnt >= DHCP_COARSE_TIMER_SECS*1000) {
  			dhcp_coarse_tmr();
  			mscnt = 0;
  		}
  	}
  #else
      xil_printf("\r\n");
      xil_printf("%20s %6s %s\r\n", "Server", "Port", "Connect With..");
      xil_printf("%20s %6s %s\r\n", "--------------------", "------", "--------------------");
  
      print_echo_app_header();
      xil_printf("\r\n");
      sys_thread_new("echod", echo_application_thread, 0,
  		THREAD_STACKSIZE,
  		DEFAULT_THREAD_PRIO);
      vTaskDelete(NULL);
  #endif
  #else
      print_echo_app_header();
      xil_printf("\r\n");
      sys_thread_new("echod",echo_application_thread, 0,
  		THREAD_STACKSIZE,
  		DEFAULT_THREAD_PRIO);
      vTaskDelete(NULL);
  #endif
      return;
  }
  
  int main_thread()
  {
  #if LWIP_DHCP==1
  	int mscnt = 0;
  #endif
  
  #ifdef XPS_BOARD_ZCU102
  	IicPhyReset();
  #endif
  
  	/* initialize lwIP before calling sys_thread_new */
      lwip_init();
  
      /* any thread using lwIP should be created using sys_thread_new */
      sys_thread_new("NW_THRD", network_thread, NULL,
  		THREAD_STACKSIZE,
              DEFAULT_THREAD_PRIO);
  
  #if LWIP_IPV6==0
  #if LWIP_DHCP==1
      while (1) {
  	vTaskDelay(DHCP_FINE_TIMER_MSECS / portTICK_RATE_MS);
  		if (server_netif.ip_addr.addr) {
  			xil_printf("DHCP request success\r\n");
  			print_ip_settings(&(server_netif.ip_addr), &(server_netif.netmask), &(server_netif.gw));
  			print_echo_app_header();
  			xil_printf("\r\n");
  			sys_thread_new("echod", echo_application_thread, 0,
  					THREAD_STACKSIZE,
  					DEFAULT_THREAD_PRIO);
  			break;
  		}
  		mscnt += DHCP_FINE_TIMER_MSECS;
  		if (mscnt >= DHCP_COARSE_TIMER_SECS * 2000) {
  			xil_printf("ERROR: DHCP request timed out\r\n");
  			xil_printf("Configuring default IP of 192.168.1.10\r\n");
  			IP4_ADDR(&(server_netif.ip_addr),  192, 168, 1, 10);
  			IP4_ADDR(&(server_netif.netmask), 255, 255, 255,  0);
  			IP4_ADDR(&(server_netif.gw),  192, 168, 1, 1);
  			print_ip_settings(&(server_netif.ip_addr), &(server_netif.netmask), &(server_netif.gw));
  			/* print all application headers */
  			xil_printf("\r\n");
  			xil_printf("%20s %6s %s\r\n", "Server", "Port", "Connect With..");
  			xil_printf("%20s %6s %s\r\n", "--------------------", "------", "--------------------");
  
  			print_echo_app_header();
  			xil_printf("\r\n");
  			sys_thread_new("echod", echo_application_thread, 0,
  					THREAD_STACKSIZE,
  					DEFAULT_THREAD_PRIO);
  			break;
  		}
  	}
  #endif
  #endif
      vTaskDelete(NULL);
      return 0;
  }
  