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Richard Barry
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/*
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FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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* then take a look at the FreeRTOS books - available as PDF or paperback *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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***NOTE*** The exception to the GPL is included to allow you to distribute
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a combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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/* Standard includes. */
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#include <string.h>
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "semphr.h"
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/* uip includes. */
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#include "uip.h"
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#include "uip_arp.h"
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#include "httpd.h"
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#include "timer.h"
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#include "clock-arch.h"
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/* Demo includes. */
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#include "emac.h"
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#include "partest.h"
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/*-----------------------------------------------------------*/
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/* MAC address configuration. */
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#define uipMAC_ADDR0 0x00
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#define uipMAC_ADDR1 0x12
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#define uipMAC_ADDR2 0x13
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#define uipMAC_ADDR3 0x10
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#define uipMAC_ADDR4 0x15
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#define uipMAC_ADDR5 0x11
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/* IP address configuration. */
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#define uipIP_ADDR0 192
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#define uipIP_ADDR1 168
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#define uipIP_ADDR2 0
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#define uipIP_ADDR3 200
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/* How long to wait before attempting to connect the MAC again. */
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#define uipINIT_WAIT 200
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/* Shortcut to the header within the Rx buffer. */
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#define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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/* Standard constant. */
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#define uipTOTAL_FRAME_HEADER_SIZE 54
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/*-----------------------------------------------------------*/
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/*
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* Send the uIP buffer to the MAC.
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*/
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static void prvENET_Send(void);
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/*
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* Setup the MAC address in the MAC itself, and in the uIP stack.
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*/
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static void prvSetMACAddress( void );
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/*
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* Port functions required by the uIP stack.
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*/
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void clock_init( void );
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clock_time_t clock_time( void );
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/*-----------------------------------------------------------*/
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/* The semaphore used by the ISR to wake the uIP task. */
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extern xSemaphoreHandle xEMACSemaphore;
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/*-----------------------------------------------------------*/
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void clock_init(void)
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{
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/* This is done when the scheduler starts. */
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}
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/*-----------------------------------------------------------*/
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clock_time_t clock_time( void )
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{
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return xTaskGetTickCount();
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}
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/*-----------------------------------------------------------*/
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void vuIP_Task( void *pvParameters )
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{
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portBASE_TYPE i;
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uip_ipaddr_t xIPAddr;
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struct timer periodic_timer, arp_timer;
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extern void ( vEMAC_ISR_Wrapper )( void );
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/* Create the semaphore used by the ISR to wake this task. */
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vSemaphoreCreateBinary( xEMACSemaphore );
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/* Initialise the uIP stack. */
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timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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uip_init();
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uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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uip_sethostaddr( xIPAddr );
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httpd_init();
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/* Initialise the MAC. */
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while( Init_EMAC() != pdPASS )
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{
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vTaskDelay( uipINIT_WAIT );
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}
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portENTER_CRITICAL();
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{
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IntEnable = INT_RX_DONE;
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VICIntEnable |= 0x00200000;
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VICVectAddr21 = ( portLONG ) vEMAC_ISR_Wrapper;
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prvSetMACAddress();
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}
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portEXIT_CRITICAL();
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for( ;; )
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{
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/* Is there received data ready to be processed? */
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uip_len = uiGetEMACRxData( uip_buf );
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if( uip_len > 0 )
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{
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/* Standard uIP loop taken from the uIP manual. */
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if( xHeader->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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if( uip_len > 0 )
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{
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uip_arp_out();
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prvENET_Send();
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}
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}
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else if( xHeader->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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if( uip_len > 0 )
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{
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prvENET_Send();
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}
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}
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}
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else
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{
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if( timer_expired( &periodic_timer ) )
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{
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timer_reset( &periodic_timer );
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for( i = 0; i < UIP_CONNS; i++ )
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{
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uip_periodic( i );
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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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if( uip_len > 0 )
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{
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uip_arp_out();
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prvENET_Send();
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}
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}
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/* Call the ARP timer function every 10 seconds. */
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if( timer_expired( &arp_timer ) )
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{
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timer_reset( &arp_timer );
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uip_arp_timer();
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}
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}
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else
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{
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/* We did not receive a packet, and there was no periodic
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processing to perform. Block for a fixed period. If a packet
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is received during this period we will be woken by the ISR
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giving us the Semaphore. */
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xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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}
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}
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}
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}
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/*-----------------------------------------------------------*/
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static void prvENET_Send(void)
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{
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RequestSend();
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/* Copy the header into the Tx buffer. */
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CopyToFrame_EMAC( uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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{
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CopyToFrame_EMAC( uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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}
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DoSend_EMAC( uip_len );
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RequestSend();
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/* Copy the header into the Tx buffer. */
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CopyToFrame_EMAC( uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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{
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CopyToFrame_EMAC( uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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}
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DoSend_EMAC( uip_len );
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}
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/*-----------------------------------------------------------*/
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static void prvSetMACAddress( void )
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{
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struct uip_eth_addr xAddr;
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/* Configure the MAC address in the uIP stack. */
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xAddr.addr[ 0 ] = uipMAC_ADDR0;
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xAddr.addr[ 1 ] = uipMAC_ADDR1;
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xAddr.addr[ 2 ] = uipMAC_ADDR2;
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xAddr.addr[ 3 ] = uipMAC_ADDR3;
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xAddr.addr[ 4 ] = uipMAC_ADDR4;
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xAddr.addr[ 5 ] = uipMAC_ADDR5;
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uip_setethaddr( xAddr );
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}
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/*-----------------------------------------------------------*/
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void vApplicationProcessFormInput( portCHAR *pcInputString, portBASE_TYPE xInputLength )
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{
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char *c, *pcText;
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static portCHAR cMessageForDisplay[ 32 ];
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extern xQueueHandle xLCDQueue;
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xLCDMessage xLCDMessage;
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/* Process the form input sent by the IO page of the served HTML. */
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c = strstr( pcInputString, "?" );
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if( c )
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{
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/* Turn LED's on or off in accordance with the check box status. */
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if( strstr( c, "LED0=1" ) != NULL )
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{
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vParTestSetLED( 5, 0 );
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}
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else
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{
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vParTestSetLED( 5, 1 );
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}
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if( strstr( c, "LED1=1" ) != NULL )
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{
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vParTestSetLED( 6, 0 );
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}
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else
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{
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vParTestSetLED( 6, 1 );
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}
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if( strstr( c, "LED2=1" ) != NULL )
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{
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vParTestSetLED( 7, 0 );
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}
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else
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{
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vParTestSetLED( 7, 1 );
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}
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/* Find the start of the text to be displayed on the LCD. */
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pcText = strstr( c, "LCD=" );
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pcText += strlen( "LCD=" );
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/* Terminate the file name for further processing within uIP. */
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*c = 0x00;
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/* Terminate the LCD string. */
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c = strstr( pcText, " " );
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if( c != NULL )
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{
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*c = 0x00;
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}
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/* Add required spaces. */
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while( ( c = strstr( pcText, "+" ) ) != NULL )
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{
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*c = ' ';
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}
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/* Write the message to the LCD. */
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strcpy( cMessageForDisplay, pcText );
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xLCDMessage.xColumn = 0;
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xLCDMessage.pcMessage = cMessageForDisplay;
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xQueueSend( xLCDQueue, &xLCDMessage, portMAX_DELAY );
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}
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}
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