315 lines
9.8 KiB
C
315 lines
9.8 KiB
C
/*
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FreeRTOS.org V5.2.0 - Copyright (C) 2003-2009 Richard Barry.
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This file is part of the FreeRTOS.org distribution.
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FreeRTOS.org is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License (version 2) as published
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by the Free Software Foundation and modified by the FreeRTOS exception.
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FreeRTOS.org 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.
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You should have received a copy of the GNU General Public License along
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with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59
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Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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A special exception to the GPL is included to allow you to distribute a
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combined work that includes FreeRTOS.org without being obliged to provide
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the source code for any proprietary components. See the licensing section
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of http://www.FreeRTOS.org for full details.
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***************************************************************************
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* *
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* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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* *
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* This is a concise, step by step, 'hands on' guide that describes both *
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* general multitasking concepts and FreeRTOS specifics. It presents and *
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* explains numerous examples that are written using the FreeRTOS API. *
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* Full source code for all the examples is provided in an accompanying *
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* .zip file. *
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* *
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***************************************************************************
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1 tab == 4 spaces!
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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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 <stdio.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 "queue.h"
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#include "semphr.h"
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/* Hardware library includes. */
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#include "LPC17xx_defs.h"
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#define NUM_LEDS 8
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/* Demo app includes. */
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#include "BlockQ.h"
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#include "integer.h"
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#include "blocktim.h"
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#include "flash.h"
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#include "partest.h"
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#include "semtest.h"
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#include "PollQ.h"
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#include "GenQTest.h"
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#include "QPeek.h"
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#include "recmutex.h"
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#include "lcd/portlcd.h"
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/*-----------------------------------------------------------*/
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/* The time between cycles of the 'check' functionality (defined within the
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tick hook. */
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#define mainCHECK_DELAY ( ( portTickType ) 5000 / portTICK_RATE_MS )
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/* Task priorities. */
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#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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#define mainSEM_TEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
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#define mainBLOCK_Q_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define mainCREATOR_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
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#define mainINTEGER_TASK_PRIORITY ( tskIDLE_PRIORITY )
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#define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
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/* The period of the system clock in nano seconds. This is used to calculate
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the jitter time in nano seconds. */
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#define mainNS_PER_CLOCK ( ( unsigned portLONG ) ( ( 1.0 / ( double ) configCPU_CLOCK_HZ ) * 1000000000.0 ) )
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#define mainBASIC_WEB_STACK_SIZE ( configMINIMAL_STACK_SIZE * 4 )
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#define mainQUEUE_SIZE ( 3 )
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/*-----------------------------------------------------------*/
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/*
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* Configure the hardware for the demo.
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*/
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static void prvSetupHardware( void );
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/*
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* Simply toggles the indicated LED.
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*/
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static void vToggleLED( unsigned portBASE_TYPE uxLED );
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/*
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* Very simple task that toggles an LED.
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*/
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static void vLEDTask( void *pvParameters );
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/*
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* The task that handles the uIP stack. All TCP/IP processing is performed in
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* this task.
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*/
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extern void vuIP_Task( void *pvParameters );
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static void vLCDTask( void *pvParameters );
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/* The queue used to send messages to the LCD task. */
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xQueueHandle xLCDQueue;
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/*-----------------------------------------------------------*/
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int main( void )
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{
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long l;
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prvSetupHardware();
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/* Start the standard demo tasks. */
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vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
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vCreateBlockTimeTasks();
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vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
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vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
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vStartIntegerMathTasks( mainINTEGER_TASK_PRIORITY );
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vStartGenericQueueTasks( mainGEN_QUEUE_TASK_PRIORITY );
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vStartQueuePeekTasks();
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vStartRecursiveMutexTasks();
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/* Start 8 tasks, each of which toggles a different LED at a different rate. */
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for( l = 0; l < NUM_LEDS; l++ )
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{
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xTaskCreate( vLEDTask, (signed char *) "LED", configMINIMAL_STACK_SIZE, ( void * ) l, tskIDLE_PRIORITY+1, NULL );
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}
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/* Create the uIP task. This uses the lwIP RTOS abstraction layer.*/
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xTaskCreate( vuIP_Task, ( signed char * ) "uIP", mainBASIC_WEB_STACK_SIZE, ( void * ) NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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/* Create the queue used by the LCD task. Messages for display on the LCD
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are received via this queue. */
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xLCDQueue = xQueueCreate( mainQUEUE_SIZE, sizeof( xLCDMessage ) );
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/* Start the tasks defined within this file/specific to this demo. */
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xTaskCreate( vLCDTask, ( signed portCHAR * ) "LCD", configMINIMAL_STACK_SIZE * 2, NULL, mainCHECK_TASK_PRIORITY - 1, NULL );
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/* Start the scheduler. */
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vTaskStartScheduler();
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/* Will only get here if there was insufficient memory to create the idle
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task. */
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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static void vLEDTask( void *pvParameters )
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{
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/* The LED to toggle is passed in as the task paramter. */
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long lLED = ( long ) pvParameters;
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unsigned long ulLEDToToggle = 1 << lLED;
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/* Calculate a delay period based on the LED number. */
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unsigned long ulDelayPeriod = 100 * ( lLED + 1 );
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for( ;; )
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{
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vTaskDelay( ulDelayPeriod );
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vToggleLED( ulLEDToToggle );
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}
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}
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/*-----------------------------------------------------------*/
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static void vToggleLED( unsigned portBASE_TYPE uxLED )
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{
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if( FIO2PIN & uxLED )
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{
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FIO2CLR = uxLED;
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}
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else
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{
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FIO2SET = uxLED;
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}
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}
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/*-----------------------------------------------------------*/
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void prvSetupHardware( void )
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{
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PCONP = 0; /* Disable peripherals power. */
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PCONP = PCONP_PCGPIO; /* Enable GPIO power. */
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PINSEL10 = 0; /* Disable TPIU. */
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PLL0CON &= ~PLLCON_PLLC; /* Disconnect the main PLL. */
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PLL0FEED = PLLFEED_FEED1;
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PLL0FEED = PLLFEED_FEED2;
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while ((PLL0STAT & PLLSTAT_PLLC) != 0);
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PLL0CON &= ~PLLCON_PLLE; /* Turn off the main PLL. */
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PLL0FEED = PLLFEED_FEED1;
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PLL0FEED = PLLFEED_FEED2;
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while ((PLL0STAT & PLLSTAT_PLLE) != 0);
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CCLKCFG = 0; /* No CPU clock divider. */
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SCS = 0x20; /* OSCEN. */
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while ((SCS & 0x40) == 0);
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CLKSRCSEL = 1; /* Use main oscillator. */
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PLL0CFG = (PLLCFG_MUL16 | PLLCFG_DIV1);
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PLL0FEED = PLLFEED_FEED1;
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PLL0FEED = PLLFEED_FEED2;
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/* Activate the PLL by turning it on then feeding the correct
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sequence of bytes. */
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PLL0CON = PLLCON_PLLE;
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PLL0FEED = PLLFEED_FEED1;
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PLL0FEED = PLLFEED_FEED2;
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CCLKCFG = 5; /* 6x CPU clock divider (72 MHz) */
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/* Wait for the PLL to lock. */
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while ((PLL0STAT & PLLSTAT_PLOCK) == 0);
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/* Connect the PLL. */
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PLL0CON = PLLCON_PLLC | PLLCON_PLLE;
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PLL0FEED = PLLFEED_FEED1;
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PLL0FEED = PLLFEED_FEED2;
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/* Setup the peripheral bus to be the same as the PLL output (72 MHz). */
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PCLKSEL0 = 0x05555555;
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/* Configure LED GPIOs as outputs. */
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FIO2DIR = 0xff;
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FIO2CLR = 0xff;
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FIO2MASK = 0;
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}
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/*-----------------------------------------------------------*/
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void vApplicationStackOverflowHook( xTaskHandle *pxTask, signed portCHAR *pcTaskName )
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{
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( void ) pxTask;
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( void ) pcTaskName;
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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void vConfigureTimerForRunTimeStats( void )
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{
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PCONP |= 0x02UL;
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_PCLKSEL0 = (_PCLKSEL0 & (~(0x3<<2))) | (0x01 << 2);
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/* Reset Timer 0 */
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T0TCR = TCR_COUNT_RESET;
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/* Just count up. */
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T0CTCR = CTCR_CTM_TIMER;
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/* Prescale to a frequency that is good enough to get a decent resolution,
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but not too fast so as to overflow all the time. */
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T0PR = ( configCPU_CLOCK_HZ / 10000UL ) - 1UL;
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/* Start the counter. */
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T0TCR = TCR_COUNT_ENABLE;
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}
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/*-----------------------------------------------------------*/
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void vLCDTask( void *pvParameters )
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{
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xLCDMessage xMessage;
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char cIPAddr[ 17 ]; /* To fit max IP address length of xxx.xxx.xxx.xxx\0 */
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( void ) pvParameters;
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/* Initialise the LCD and display a startup message. */
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LCD_init();
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LCD_cur_off();
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LCD_cls();
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LCD_gotoxy( 1, 1 );
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LCD_puts( "www.FreeRTOS.org" );
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LCD_gotoxy( 1, 2 );
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sprintf( cIPAddr, "%d.%d.%d.%d", configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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LCD_puts( cIPAddr );
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for( ;; )
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{
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/* Wait for a message to arrive that requires displaying. */
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while( xQueueReceive( xLCDQueue, &xMessage, portMAX_DELAY ) != pdPASS );
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/* Display the message. Print each message to a different position. */
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LCD_cls();
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LCD_gotoxy( ( xMessage.xColumn & 0x07 ) + 1, ( xMessage.xColumn & 0x01 ) + 1 );
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LCD_puts( xMessage.pcMessage );
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}
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}
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/*-----------------------------------------------------------*/
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