/* | |
FreeRTOS.org V5.4.0 - Copyright (C) 2003-2009 Richard Barry. | |
This file is part of the FreeRTOS.org distribution. | |
FreeRTOS.org is free software; you can redistribute it and/or modify it | |
under the terms of the GNU General Public License (version 2) as published | |
by the Free Software Foundation and modified by the FreeRTOS exception. | |
**NOTE** The exception to the GPL is included to allow you to distribute a | |
combined work that includes FreeRTOS.org without being obliged to provide | |
the source code for any proprietary components. Alternative commercial | |
license and support terms are also available upon request. See the | |
licensing section of http://www.FreeRTOS.org for full details. | |
FreeRTOS.org 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 should have received a copy of the GNU General Public License along | |
with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59 | |
Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
*************************************************************************** | |
* * | |
* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation * | |
* * | |
* This is a concise, step by step, 'hands on' guide that describes both * | |
* general multitasking concepts and FreeRTOS specifics. It presents and * | |
* explains numerous examples that are written using the FreeRTOS API. * | |
* Full source code for all the examples is provided in an accompanying * | |
* .zip file. * | |
* * | |
*************************************************************************** | |
1 tab == 4 spaces! | |
Please ensure to read the configuration and relevant port sections of the | |
online documentation. | |
http://www.FreeRTOS.org - Documentation, latest information, license and | |
contact details. | |
http://www.SafeRTOS.com - A version that is certified for use in safety | |
critical systems. | |
http://www.OpenRTOS.com - Commercial support, development, porting, | |
licensing and training services. | |
*/ | |
/* Standard includes. */ | |
#include <string.h> | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
#include "semphr.h" | |
/* uip includes. */ | |
#include "uip.h" | |
#include "uip_arp.h" | |
#include "httpd.h" | |
#include "timer.h" | |
#include "clock-arch.h" | |
/* Demo includes. */ | |
#include "EthDev_LPC17xx.h" | |
#include "EthDev.h" | |
#include "ParTest.h" | |
#include "LPC17xx.h" | |
#include "core_cm3.h" | |
/*-----------------------------------------------------------*/ | |
/* How long to wait before attempting to connect the MAC again. */ | |
#define uipINIT_WAIT 100 | |
/* Shortcut to the header within the Rx buffer. */ | |
#define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ]) | |
/* Standard constant. */ | |
#define uipTOTAL_FRAME_HEADER_SIZE 54 | |
/*-----------------------------------------------------------*/ | |
/* | |
* Setup the MAC address in the MAC itself, and in the uIP stack. | |
*/ | |
static void prvSetMACAddress( void ); | |
/* | |
* Port functions required by the uIP stack. | |
*/ | |
void clock_init( void ); | |
clock_time_t clock_time( void ); | |
/*-----------------------------------------------------------*/ | |
/* The semaphore used by the ISR to wake the uIP task. */ | |
xSemaphoreHandle xEMACSemaphore = NULL; | |
/*-----------------------------------------------------------*/ | |
void clock_init(void) | |
{ | |
/* This is done when the scheduler starts. */ | |
} | |
/*-----------------------------------------------------------*/ | |
clock_time_t clock_time( void ) | |
{ | |
return xTaskGetTickCount(); | |
} | |
/*-----------------------------------------------------------*/ | |
void vuIP_Task( void *pvParameters ) | |
{ | |
portBASE_TYPE i; | |
uip_ipaddr_t xIPAddr; | |
struct timer periodic_timer, arp_timer; | |
extern void ( vEMAC_ISR_Wrapper )( void ); | |
( void ) pvParameters; | |
/* Initialise the uIP stack. */ | |
timer_set( &periodic_timer, configTICK_RATE_HZ / 2 ); | |
timer_set( &arp_timer, configTICK_RATE_HZ * 10 ); | |
uip_init(); | |
uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 ); | |
uip_sethostaddr( xIPAddr ); | |
uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 ); | |
uip_setnetmask( xIPAddr ); | |
httpd_init(); | |
/* Create the semaphore used to wake the uIP task. */ | |
vSemaphoreCreateBinary( xEMACSemaphore ); | |
/* Initialise the MAC. */ | |
while( lEMACInit() != pdPASS ) | |
{ | |
vTaskDelay( uipINIT_WAIT ); | |
} | |
portENTER_CRITICAL(); | |
{ | |
ETH_INTENABLE = ( INT_RX_DONE | INT_TX_DONE ); | |
/* set the interrupt priority */ | |
NVIC_SetPriority( ENET_IRQn, configMAX_SYSCALL_INTERRUPT_PRIORITY ); | |
/* enable the interrupt */ | |
NVIC_EnableIRQ( ENET_IRQn ); | |
prvSetMACAddress(); | |
} | |
portEXIT_CRITICAL(); | |
for( ;; ) | |
{ | |
/* Is there received data ready to be processed? */ | |
uip_len = ulGetEMACRxData(); | |
if( ( uip_len > 0 ) && ( uip_buf != NULL ) ) | |
{ | |
/* Standard uIP loop taken from the uIP manual. */ | |
if( xHeader->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(); | |
vSendEMACTxData( uip_len ); | |
} | |
} | |
else if( xHeader->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 ) | |
{ | |
vSendEMACTxData( uip_len ); | |
} | |
} | |
} | |
else | |
{ | |
if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) ) | |
{ | |
timer_reset( &periodic_timer ); | |
for( i = 0; i < UIP_CONNS; i++ ) | |
{ | |
uip_periodic( i ); | |
/* 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(); | |
vSendEMACTxData( uip_len ); | |
} | |
} | |
/* Call the ARP timer function every 10 seconds. */ | |
if( timer_expired( &arp_timer ) ) | |
{ | |
timer_reset( &arp_timer ); | |
uip_arp_timer(); | |
} | |
} | |
else | |
{ | |
/* We did not receive a packet, and there was no periodic | |
processing to perform. Block for a fixed period. If a packet | |
is received during this period we will be woken by the ISR | |
giving us the Semaphore. */ | |
xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 ); | |
} | |
} | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
static void prvSetMACAddress( void ) | |
{ | |
struct uip_eth_addr xAddr; | |
/* Configure the MAC address in the uIP stack. */ | |
xAddr.addr[ 0 ] = configMAC_ADDR0; | |
xAddr.addr[ 1 ] = configMAC_ADDR1; | |
xAddr.addr[ 2 ] = configMAC_ADDR2; | |
xAddr.addr[ 3 ] = configMAC_ADDR3; | |
xAddr.addr[ 4 ] = configMAC_ADDR4; | |
xAddr.addr[ 5 ] = configMAC_ADDR5; | |
uip_setethaddr( xAddr ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationProcessFormInput( portCHAR *pcInputString ) | |
{ | |
char *c, *pcText; | |
static portCHAR cMessageForDisplay[ 32 ]; | |
extern xQueueHandle xLCDQueue; | |
xLCDMessage xLCDMessage; | |
/* Process the form input sent by the IO page of the served HTML. */ | |
c = strstr( pcInputString, "?" ); | |
if( c ) | |
{ | |
/* Turn LED's on or off in accordance with the check box status. */ | |
if( strstr( c, "LED0=1" ) != NULL ) | |
{ | |
/* Set LED7. */ | |
vParTestSetLED( 1 << 7, 1 ); | |
} | |
else | |
{ | |
/* Clear LED7. */ | |
vParTestSetLED( 1 << 7, 0 ); | |
} | |
/* Find the start of the text to be displayed on the LCD. */ | |
pcText = strstr( c, "LCD=" ); | |
pcText += strlen( "LCD=" ); | |
/* Terminate the file name for further processing within uIP. */ | |
*c = 0x00; | |
/* Terminate the LCD string. */ | |
c = strstr( pcText, " " ); | |
if( c != NULL ) | |
{ | |
*c = 0x00; | |
} | |
/* Add required spaces. */ | |
while( ( c = strstr( pcText, "+" ) ) != NULL ) | |
{ | |
*c = ' '; | |
} | |
/* Write the message to the LCD. */ | |
strcpy( cMessageForDisplay, pcText ); | |
xLCDMessage.pcMessage = cMessageForDisplay; | |
xQueueSend( xLCDQueue, &xLCDMessage, portMAX_DELAY ); | |
} | |
} | |