254 lines
9.1 KiB
C
254 lines
9.1 KiB
C
/************************************************************************************//**
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* \file Demo/ARMCM3_LM3S_EK_LM3S6965_Crossworks/Prog/net.c
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* \brief Network application for the uIP TCP/IP stack.
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* \ingroup Prog_ARMCM3_LM3S_EK_LM3S6965_Crossworks
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* \internal
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*----------------------------------------------------------------------------------------
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* C O P Y R I G H T
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*----------------------------------------------------------------------------------------
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* Copyright (c) 2014 by Feaser http://www.feaser.com All rights reserved
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*
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*----------------------------------------------------------------------------------------
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* L I C E N S E
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*----------------------------------------------------------------------------------------
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* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You have received a copy of the GNU General Public License along with OpenBLT. It
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* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
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*
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* \endinternal
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****************************************************************************************/
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/****************************************************************************************
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* Include files
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****************************************************************************************/
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#include "header.h" /* generic header */
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#include "netdev.h"
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#include "uip.h"
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#include "uip_arp.h"
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/****************************************************************************************
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* Macro definitions
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****************************************************************************************/
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/** \brief Delta time for the uIP periodic timer. */
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#define NET_UIP_PERIODIC_TIMER_MS (500)
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/** \brief Delta time for the uIP ARP timer. */
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#define NET_UIP_ARP_TIMER_MS (10000)
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/** \brief Macro for accessing the Ethernet header information in the buffer */
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#define NET_UIP_HEADER_BUF ((struct uip_eth_hdr *)&uip_buf[0])
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/****************************************************************************************
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* Local data declarations
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****************************************************************************************/
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/** \brief Holds the time out value of the uIP periodic timer. */
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static unsigned long periodicTimerTimeOut;
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/** \brief Holds the time out value of the uIP ARP timer. */
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static unsigned long ARPTimerTimeOut;
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#if (BOOT_COM_NET_DHCP_ENABLE > 0)
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/** \brief Holds the MAC address which is used by the DHCP client. */
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static struct uip_eth_addr macAddress;
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#endif
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/************************************************************************************//**
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** \brief Initializes the TCP/IP network communication interface.
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** \return none.
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**
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****************************************************************************************/
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void NetInit(void)
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{
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uip_ipaddr_t ipaddr;
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/* initialize the network device */
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netdev_init();
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/* initialize the timer variables */
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periodicTimerTimeOut = TimerGet() + NET_UIP_PERIODIC_TIMER_MS;
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ARPTimerTimeOut = TimerGet() + NET_UIP_ARP_TIMER_MS;
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/* initialize the uIP TCP/IP stack. */
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uip_init();
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#if (BOOT_COM_NET_DHCP_ENABLE == 0)
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/* set the IP address */
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uip_ipaddr(ipaddr, BOOT_COM_NET_IPADDR0, BOOT_COM_NET_IPADDR1, BOOT_COM_NET_IPADDR2,
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BOOT_COM_NET_IPADDR3);
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uip_sethostaddr(ipaddr);
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/* set the network mask */
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uip_ipaddr(ipaddr, BOOT_COM_NET_NETMASK0, BOOT_COM_NET_NETMASK1, BOOT_COM_NET_NETMASK2,
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BOOT_COM_NET_NETMASK3);
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uip_setnetmask(ipaddr);
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/* set the gateway address */
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uip_ipaddr(ipaddr, BOOT_COM_NET_GATEWAY0, BOOT_COM_NET_GATEWAY1, BOOT_COM_NET_GATEWAY2,
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BOOT_COM_NET_GATEWAY3);
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uip_setdraddr(ipaddr);
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#else
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/* set the IP address */
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uip_ipaddr(ipaddr, 0, 0, 0, 0);
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uip_sethostaddr(ipaddr);
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/* set the network mask */
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uip_ipaddr(ipaddr, 0, 0, 0, 0);
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uip_setnetmask(ipaddr);
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/* set the gateway address */
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uip_ipaddr(ipaddr, 0, 0, 0, 0);
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uip_setdraddr(ipaddr);
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#endif
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/* start listening on the configured port for XCP transfers on TCP/IP */
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uip_listen(HTONS(BOOT_COM_NET_PORT));
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/* initialize the MAC and set the MAC address */
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netdev_init_mac();
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#if (BOOT_COM_NET_DHCP_ENABLE > 0)
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/* initialize the DHCP client application and send the initial request. */
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netdev_get_mac(&macAddress.addr[0]);
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dhcpc_init(&macAddress.addr[0], 6);
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dhcpc_request();
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#endif
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} /*** end of NetInit ***/
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/************************************************************************************//**
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** \brief The uIP network application that detects the XCP connect command on the
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** port used by the bootloader. This indicates that the bootloader should
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** be activated.
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** \return none.
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**
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****************************************************************************************/
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void NetApp(void)
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{
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unsigned char *newDataPtr;
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if (uip_connected())
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{
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return;
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}
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if (uip_newdata())
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{
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/* a new XCP command was received. check if this is the connect command and in this
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* case activate the bootloader. with XCP on TCP/IP the first 4 bytes contain a
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* counter value in which we are not really interested.
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*/
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newDataPtr = uip_appdata;
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newDataPtr += 4;
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/* check if this was an XCP CONNECT command */
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if ((newDataPtr[0] == 0xff) && (newDataPtr[1] == 0x00))
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{
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/* the shared parameter at index 0 is used as a boolean flag to indicate if the
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* bootloader should initialize the TCP/IP network stack. we just received a
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* firmware update request from the TCP/IP network and we are about to active
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* the bootloader for a firmware update via TCP/IP. At this point we should
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* set the flag to make sure the bootloader initializes its TCP/IP network stack.
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*/
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SharedParamsWriteByIndex(0, 1);
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/* connection request received so start the bootloader */
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BootActivate();
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}
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}
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} /*** end of NetApp ***/
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/************************************************************************************//**
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** \brief Runs the TCP/IP server task.
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** \return none.
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**
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****************************************************************************************/
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void NetTask(void)
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{
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unsigned long connection;
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unsigned long packetLen;
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/* check for an RX packet and read it. */
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packetLen = netdev_read();
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if (packetLen > 0)
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{
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/* set uip_len for uIP stack usage */
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uip_len = (unsigned short)packetLen;
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/* process incoming IP packets here. */
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if (NET_UIP_HEADER_BUF->type == htons(UIP_ETHTYPE_IP))
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{
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uip_arp_ipin();
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uip_input();
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/* if the above function invocation resulted in data that
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* should be sent out on the network, the global variable
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* uip_len is set to a value > 0.
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*/
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if (uip_len > 0)
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{
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uip_arp_out();
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netdev_send();
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uip_len = 0;
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}
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}
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/* process incoming ARP packets here. */
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else if (NET_UIP_HEADER_BUF->type == htons(UIP_ETHTYPE_ARP))
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{
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uip_arp_arpin();
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/* if the above function invocation resulted in data that
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* should be sent out on the network, the global variable
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* uip_len is set to a value > 0.
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*/
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if (uip_len > 0)
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{
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netdev_send();
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uip_len = 0;
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}
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}
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}
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/* process TCP/IP Periodic Timer here. */
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if (TimerGet() >= periodicTimerTimeOut)
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{
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periodicTimerTimeOut += NET_UIP_PERIODIC_TIMER_MS;
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for (connection = 0; connection < UIP_CONNS; connection++)
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{
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uip_periodic(connection);
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/* If the above function invocation resulted in data that
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* should be sent out on the network, the global variable
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* uip_len is set to a value > 0.
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*/
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if (uip_len > 0)
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{
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uip_arp_out();
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netdev_send();
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uip_len = 0;
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}
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}
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#if UIP_UDP
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for (connection = 0; connection < UIP_UDP_CONNS; connection++)
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{
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uip_udp_periodic(connection);
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/* If the above function invocation resulted in data that
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* should be sent out on the network, the global variable
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* uip_len is set to a value > 0.
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*/
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if(uip_len > 0)
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{
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uip_arp_out();
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netdev_send();
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uip_len = 0;
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}
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}
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#endif
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}
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/* process ARP Timer here. */
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if (TimerGet() >= ARPTimerTimeOut)
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{
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ARPTimerTimeOut += NET_UIP_ARP_TIMER_MS;
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uip_arp_timer();
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}
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} /*** end of NetServerTask ***/
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/*********************************** end of net.c **************************************/
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