blob: 4e69dc34f0f84d3ef1e379624302bcd7464e9df1 [file] [log] [blame]
FreeRTOS V7.4.1 - Copyright (C) 2013 Real Time Engineers Ltd.
* *
* FreeRTOS tutorial books are available in pdf and paperback. *
* Complete, revised, and edited pdf reference manuals are also *
* available. *
* *
* Purchasing FreeRTOS documentation will not only help you, by *
* ensuring you get running as quickly as possible and with an *
* in-depth knowledge of how to use FreeRTOS, it will also help *
* the FreeRTOS project to continue with its mission of providing *
* professional grade, cross platform, de facto standard solutions *
* for microcontrollers - completely free of charge! *
* *
* >>> See for details. <<< *
* *
* Thank you for using FreeRTOS, and thank you for your support! *
* *
This file is part of the FreeRTOS distribution.
FreeRTOS 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 modification to the GPL is included to allow you to
distribute a combined work that includes FreeRTOS without being obliged to
provide the source code for proprietary components outside of the FreeRTOS
FreeRTOS 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
and the FreeRTOS license exception along with FreeRTOS; if not it can be
viewed here: and also obtained by
writing to Real Time Engineers Ltd., contact details for whom are available
on the FreeRTOS WEB site.
1 tab == 4 spaces!
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* *
* *
*************************************************************************** - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details. - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, and our new
fully thread aware and reentrant UDP/IP stack. - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems, who sell the code with commercial support,
indemnification and middleware, under the OpenRTOS brand. - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
/* Standard includes. */
#include <string.h>
#include <stdio.h>
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include "queue.h"
/* FreeRTOS+UDP includes. */
#include "FreeRTOS_UDP_IP.h"
#include "FreeRTOS_Sockets.h"
/* Example includes. */
#include "TwoEchoClients.h"
#include "CDCCommandConsole.h"
/* Library includes. */
#include "LPC18xx.h"
/* The size of the stack and the priority used by the two echo client tasks. */
/* The size of the stack and the priority used by the USB CDC command console
task. */
* Register commands that can be used with FreeRTOS+CLI. The commands are
* defined in CLI-commands.c.
extern void vRegisterCLICommands( void );
* Initialise the LED ports, and create a timer that periodically toggles an LED
* just to provide a visual indication that the program is running.
extern void vLEDsInitialise( void );
/* The default IP and MAC address used by the demo. The address configuration
defined here will be used if ipconfigUSE_DHCP is 0, or if ipconfigUSE_DHCP is
1 but a DHCP server could not be contacted. See the online documentation for
more information. */
static const uint8_t ucIPAddress[ 4 ] = { configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 };
static const uint8_t ucNetMask[ 4 ] = { configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 };
static const uint8_t ucGatewayAddress[ 4 ] = { configGATEWAY_ADDR0, configGATEWAY_ADDR1, configGATEWAY_ADDR2, configGATEWAY_ADDR3 };
static const uint8_t ucDNSServerAddress[ 4 ] = { configDNS_SERVER_ADDR0, configDNS_SERVER_ADDR1, configDNS_SERVER_ADDR2, configDNS_SERVER_ADDR3 };
/* The MAC address used by the demo. In production units the MAC address would
probably be read from flash memory or an EEPROM. Here it is just hard coded. */
const uint8_t ucMACAddress[ 6 ] = { configMAC_ADDR0, configMAC_ADDR1, configMAC_ADDR2, configMAC_ADDR3, configMAC_ADDR4, configMAC_ADDR5 };
* See the following web page for information on using this demo.
int main( void )
/* The examples assume that all priority bits are assigned as preemption
priority bits. */
NVIC_SetPriorityGrouping( 0UL );
/* Start the timer that just toggles an LED to show the demo is running. */
/* Start the tasks that implements the command console on the UART, as
described above. */
/* Register CLI commands. */
/* Initialise the network interface. Tasks that use the network are
created in the network event hook when the network is connected and ready
for use. The address values passed in here are used if ipconfigUSE_DHCP is
set to 0, or if ipconfigUSE_DHCP is set to 1 but a DHCP server cannot be
contacted. */
FreeRTOS_IPInit( ucIPAddress, ucNetMask, ucGatewayAddress, ucDNSServerAddress, ucMACAddress );
/* If the trace recorder code is included... */
extern xQueueHandle xNetworkEventQueue;
/* Name the queue for viewing in FreeRTOS+Trace. */
vTraceSetQueueName( xNetworkEventQueue, "IPStackEvent" );
/* Start the FreeRTOS scheduler. */
/* The following line should never execute. If it does, it means there was
insufficient FreeRTOS heap memory available to create the Idle and/or timer
tasks. See the memory management section on the web
site for more information. */
for( ;; );
void vApplicationStackOverflowHook( xTaskHandle pxTask, signed char *pcTaskName )
( void ) pcTaskName;
( void ) pxTask;
/* Run time stack overflow checking is performed if
configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook
function is called if a stack overflow is detected. */
for( ;; );
void vApplicationMallocFailedHook( void )
/* vApplicationMallocFailedHook() will only be called if
configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
function that will get called if a call to pvPortMalloc() fails.
pvPortMalloc() is called internally by the kernel whenever a task, queue,
timer or semaphore is created. It is also called by various parts of the
demo application. If heap_1.c, heap_2.c or heap_4.c are used, then the
size of the heap available to pvPortMalloc() is defined by
configTOTAL_HEAP_SIZE in FreeRTOSConfig.h, and the xPortGetFreeHeapSize()
API function can be used to query the size of free heap space that remains
(although it does not provide information on how the remaining heap might
be fragmented). */
for( ;; );
/* Called by FreeRTOS+UDP when the network connects. */
void vApplicationIPNetworkEventHook( eIPCallbackEvent_t eNetworkEvent )
static portBASE_TYPE xTaskAlreadyCreated = pdFALSE;
if( eNetworkEvent == eNetworkUp )
/* Create the tasks that transmit to and receive from a standard
echo server (see the web documentation for this port) in both
standard and zero copy mode. */
if( xTaskAlreadyCreated == pdFALSE )
xTaskAlreadyCreated = pdTRUE;
/* Called by FreeRTOS+UDP when a reply is received to an outgoing ping request. */
void vApplicationPingReplyHook( ePingReplyStatus_t eStatus, uint16_t usIdentifier )
static const uint8_t *pucSuccess = ( uint8_t * ) "\r\n\r\nPing reply received - ";
static const uint8_t *pucInvalidChecksum = ( uint8_t * ) "\r\n\r\nPing reply received with invalid checksum - ";
static const uint8_t *pucInvalidData = ( uint8_t * ) "\r\n\r\nPing reply received with invalid data - ";
static uint8_t ucMessage[ 50 ];
void vOutputString( const uint8_t * const pucMessage );
switch( eStatus )
case eSuccess :
vOutputString( pucSuccess );
case eInvalidChecksum :
vOutputString( pucInvalidChecksum );
case eInvalidData :
vOutputString( pucInvalidData );
default :
/* It is not possible to get here as all enums have their own
case. */
sprintf( ( char * ) ucMessage, "identifier %d\r\n\r\n", ( int ) usIdentifier );
vOutputString( ucMessage );