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openblt/Target/Demo/ARMCM7_STM32F7_Nucleo_F767Z.../Prog/net.c

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/************************************************************************************//**
* \file Demo/ARMCM7_STM32F7_Nucleo_F767ZI_GCC/Prog/net.c
* \brief Network application for the uIP TCP/IP stack.
* \ingroup Prog_ARMCM7_STM32F7_Nucleo_F767ZI_GCC
* \internal
*----------------------------------------------------------------------------------------
* C O P Y R I G H T
*----------------------------------------------------------------------------------------
* Copyright (c) 2019 by Feaser http://www.feaser.com All rights reserved
*
*----------------------------------------------------------------------------------------
* L I C E N S E
*----------------------------------------------------------------------------------------
* This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You have received a copy of the GNU General Public License along with OpenBLT. It
* should be located in ".\Doc\license.html". If not, contact Feaser to obtain a copy.
*
* \endinternal
****************************************************************************************/
/****************************************************************************************
* Include files
****************************************************************************************/
#include "header.h" /* generic header */
#include "netdev.h"
#include "uip.h"
#include "uip_arp.h"
/****************************************************************************************
* Macro definitions
****************************************************************************************/
/** \brief Delta time for the uIP periodic timer. */
#define NET_UIP_PERIODIC_TIMER_MS (500)
/** \brief Delta time for the uIP ARP timer. */
#define NET_UIP_ARP_TIMER_MS (10000)
/** \brief Macro for accessing the Ethernet header information in the buffer */
#define NET_UIP_HEADER_BUF ((struct uip_eth_hdr *)&uip_buf[0])
/****************************************************************************************
* Local data declarations
****************************************************************************************/
/** \brief Holds the time out value of the uIP periodic timer. */
static unsigned long periodicTimerTimeOut;
/** \brief Holds the time out value of the uIP ARP timer. */
static unsigned long ARPTimerTimeOut;
#if (BOOT_COM_NET_DHCP_ENABLE > 0)
/** \brief Holds the MAC address which is used by the DHCP client. */
static struct uip_eth_addr macAddress;
#endif
/************************************************************************************//**
** \brief Initializes the TCP/IP network communication interface.
** \return none.
**
****************************************************************************************/
void NetInit(void)
{
uip_ipaddr_t ipaddr;
/* initialize the network device */
netdev_init();
/* initialize the timer variables */
periodicTimerTimeOut = TimerGet() + NET_UIP_PERIODIC_TIMER_MS;
ARPTimerTimeOut = TimerGet() + NET_UIP_ARP_TIMER_MS;
/* initialize the uIP TCP/IP stack. */
uip_init();
#if (BOOT_COM_NET_DHCP_ENABLE == 0)
/* set the IP address */
uip_ipaddr(ipaddr, BOOT_COM_NET_IPADDR0, BOOT_COM_NET_IPADDR1, BOOT_COM_NET_IPADDR2,
BOOT_COM_NET_IPADDR3);
uip_sethostaddr(ipaddr);
/* set the network mask */
uip_ipaddr(ipaddr, BOOT_COM_NET_NETMASK0, BOOT_COM_NET_NETMASK1, BOOT_COM_NET_NETMASK2,
BOOT_COM_NET_NETMASK3);
uip_setnetmask(ipaddr);
/* set the gateway address */
uip_ipaddr(ipaddr, BOOT_COM_NET_GATEWAY0, BOOT_COM_NET_GATEWAY1, BOOT_COM_NET_GATEWAY2,
BOOT_COM_NET_GATEWAY3);
uip_setdraddr(ipaddr);
#else
/* set the IP address */
uip_ipaddr(ipaddr, 0, 0, 0, 0);
uip_sethostaddr(ipaddr);
/* set the network mask */
uip_ipaddr(ipaddr, 0, 0, 0, 0);
uip_setnetmask(ipaddr);
/* set the gateway address */
uip_ipaddr(ipaddr, 0, 0, 0, 0);
uip_setdraddr(ipaddr);
#endif
/* start listening on the configured port for XCP transfers on TCP/IP */
uip_listen(HTONS(BOOT_COM_NET_PORT));
/* initialize the MAC and set the MAC address */
netdev_init_mac();
#if (BOOT_COM_NET_DHCP_ENABLE > 0)
/* initialize the DHCP client application and send the initial request. */
netdev_get_mac(&macAddress.addr[0]);
dhcpc_init(&macAddress.addr[0], 6);
dhcpc_request();
#endif
} /*** end of NetInit ***/
/************************************************************************************//**
** \brief The uIP network application that detects the XCP connect command on the
** port used by the bootloader. This indicates that the bootloader should
** be activated.
** \return none.
**
****************************************************************************************/
void NetApp(void)
{
unsigned char *newDataPtr;
unsigned short newDataLen;
if (uip_connected())
{
return;
}
if (uip_newdata())
{
/* a new XCP command was received. check if this is the connect command and in this
* case activate the bootloader. with XCP on TCP/IP the first 4 bytes contain a
* counter value in which we are not really interested.
*/
newDataPtr = uip_appdata;
newDataPtr += 4;
newDataLen = uip_datalen() - 4;
/* check if this was an XCP CONNECT command */
if ((newDataPtr[0] == 0xff) && (newDataLen == 2))
{
/* the shared parameter at index 0 is used as a boolean flag to indicate if the
* bootloader should initialize the TCP/IP network stack. we just received a
* firmware update request from the TCP/IP network and we are about to active
* the bootloader for a firmware update via TCP/IP. At this point we should
* set the flag to make sure the bootloader initializes its TCP/IP network stack.
*/
SharedParamsWriteByIndex(0, 1);
/* connection request received so start the bootloader */
BootActivate();
}
}
} /*** end of NetApp ***/
/************************************************************************************//**
** \brief Runs the TCP/IP server task.
** \return none.
**
****************************************************************************************/
void NetTask(void)
{
unsigned long connection;
unsigned long packetLen;
/* check for an RX packet and read it. */
packetLen = netdev_read();
if (packetLen > 0)
{
/* set uip_len for uIP stack usage */
uip_len = (unsigned short)packetLen;
/* process incoming IP packets here. */
if (NET_UIP_HEADER_BUF->type == htons(UIP_ETHTYPE_IP))
{
uip_arp_ipin();
uip_input();
/* if the above function invocation resulted in data that
* should be sent out on the network, the global variable
* uip_len is set to a value > 0.
*/
if (uip_len > 0)
{
uip_arp_out();
netdev_send();
uip_len = 0;
}
}
/* process incoming ARP packets here. */
else if (NET_UIP_HEADER_BUF->type == htons(UIP_ETHTYPE_ARP))
{
uip_arp_arpin();
/* if the above function invocation resulted in data that
* should be sent out on the network, the global variable
* uip_len is set to a value > 0.
*/
if (uip_len > 0)
{
netdev_send();
uip_len = 0;
}
}
}
/* process TCP/IP Periodic Timer here. */
if (TimerGet() >= periodicTimerTimeOut)
{
periodicTimerTimeOut += NET_UIP_PERIODIC_TIMER_MS;
for (connection = 0; connection < UIP_CONNS; connection++)
{
uip_periodic(connection);
/* If the above function invocation resulted in data that
* should be sent out on the network, the global variable
* uip_len is set to a value > 0.
*/
if (uip_len > 0)
{
uip_arp_out();
netdev_send();
uip_len = 0;
}
}
#if UIP_UDP
for (connection = 0; connection < UIP_UDP_CONNS; connection++)
{
uip_udp_periodic(connection);
/* If the above function invocation resulted in data that
* should be sent out on the network, the global variable
* uip_len is set to a value > 0.
*/
if(uip_len > 0)
{
uip_arp_out();
netdev_send();
uip_len = 0;
}
}
#endif
}
/* process ARP Timer here. */
if (TimerGet() >= ARPTimerTimeOut)
{
ARPTimerTimeOut += NET_UIP_ARP_TIMER_MS;
uip_arp_timer();
}
} /*** end of NetServerTask ***/
/*********************************** end of net.c **************************************/
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