main.c

Show hou use semaphores in RTL-ARM

/* 
 ********************************************************************
 * Project:    GNU-Port FreeRTOS Port
 * File:    	main.c
 *
 * System:   	ARM7TDMI-S 32 Bit (LPC2378)
 * Compiler:  	GCC 4.0.3
 *
 * Date:      	2006-11-17
 * Author:    	Grohmann
 *
 * Rights:    	Hitex Development Tools GmbH
 *            	Greschbachstr. 12
 *            	D-76229 Karlsruhe
 ********************************************************************
 * Description:
 *
 * This file is part of the GNU FreeRTOS Port
 * The code is based on the FreeRTOS originated by Richard Barry
 * This is a small implementation preemtive and semaphore task. 
 * The application runs in ARM mode with high optimization level.
 *	
 ********************************************************************
 * History:
 *
 *  Revision 1.0    2006/11/17      Gn
 *     Initial revision 
 ********************************************************************
 * This is a preliminary version.
 *
 * WARRANTY:  HITEX warrants that the media on which the SOFTWARE is 
 * furnished is free from defects in materials and workmanship under 
 * normal use and service for a period of ninety (90) days. HITEX entire
 * liability and your exclusive remedy shall be the replacement of the 
 * SOFTWARE if the media is defective. This Warranty is void if failure
 * of the media resulted from unauthorized modification, accident, abuse,
 * or misapplication.
 *
 * DISCLAIMER:  OTHER THAN THE ABOVE WARRANTY, THE SOFTWARE IS FURNISHED
 * "AS IS" WITHOUT WARRANTY OF ANY KIND. HITEX DISCLAIMS ALL OTHER WARRANTIES,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * NEITHER HITEX NOR ITS AFFILIATES SHALL BE LIABLE FOR ANY DAMAGES ARISING
 * OUT OF THE USE OF OR INABILITY TO USE THE SOFTWARE, INCLUDING DAMAGES FOR
 * LOSS OF PROFITS, BUSINESS INTERRUPTION, OR ANY SPECIAL, INCIDENTAL, INDIRECT
 * OR CONSEQUENTIAL DAMAGES EVEN IF HITEX HAS BEEN ADVISED OF THE POSSIBILITY 
 * OF SUCH DAMAGES.
 ********************************************************************/

#define _MAIN_H_

#include "peripherals_lpc23xx.h"
#include "main.h"
/* Standard includes. */
#include <stdlib.h>
#include <string.h>

/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "integer.h"
#include "flash.h"
#include "partest.h"
#include "semtest.h"
#include "lcd_mcb2300.h"
#include "semphr.h"
#include "queue.h"
#define global extern   /* to declare external variables and functions      */

/*-----------------------------------------------------------*/

/* Constants to setup I/O. */
#define mainTX_ENABLE	      ( ( unsigned portLONG ) 0x0001 )
#define mainRX_ENABLE	      ( ( unsigned portLONG ) 0x0004 )
#define mainP0_14		      ( ( unsigned portLONG ) 0x4000 )
#define mainP2_0		      ( ( unsigned portLONG ) 0x00000001 )
#define mainP2_LEDs           ( ( unsigned portLONG ) 0x000000FF )
#define mainJTAG_PORT	      ( ( unsigned portLONG ) 0x3E0000UL )

/* Constants to setup the peripheral bus. */
#define mainBUS_CLK_FULL	  ( ( unsigned portCHAR ) 0x01 )

/* Constants for the ComTest tasks. */
#define mainCOM_TEST_BAUD_RATE	( ( unsigned portLONG ) 115200 )
#define mainCOM_TEST_LED		( 3 )

/* Priorities for the demo application tasks. */
#define mainLED_TASK_PRIORITY		( tskIDLE_PRIORITY + 1 )
#define mainLCD_TASK_PRIORITY		( tskIDLE_PRIORITY + 2 )
#define mainCOM_TEST_PRIORITY		( tskIDLE_PRIORITY + 2 )
#define mainQUEUE_POLL_PRIORITY	    ( tskIDLE_PRIORITY + 3 )
#define mainCHECK_TASK_PRIORITY	    ( tskIDLE_PRIORITY + 4 )
#define mainSEM_TEST_PRIORITY		( tskIDLE_PRIORITY + 1 )
#define mainBLOCK_Q_PRIORITY		( tskIDLE_PRIORITY + 2 )

/* The rate at which the on board LED will toggle when there is/is not an 
error. */
#define mainNO_ERROR_FLASH_PERIOD	( ( portTickType ) 3000 / portTICK_RATE_MS  )
#define mainERROR_FLASH_PERIOD		( ( portTickType ) 500 / portTICK_RATE_MS  )
#define mainON_BOARD_LED_BIT		( ( unsigned portLONG ) 0x100 )

/* Constants used by the vMemCheckTask() task. */
#define mainCOUNT_INITIAL_VALUE		( ( unsigned portLONG ) 0 )
#define mainNO_TASK					( 0 )

/* The size of the memory blocks allocated by the vMemCheckTask() task. */
#define mainMEM_CHECK_SIZE_1		( ( size_t ) 51 )
#define mainMEM_CHECK_SIZE_2		( ( size_t ) 52 )
#define mainMEM_CHECK_SIZE_3		( ( size_t ) 151 )


xTaskHandle xTask1;
xTaskHandle xTask2;
xSemaphoreHandle xSemaphore;
xQueueHandle messageQueue;
/*-----------------------------------------------------------*/

/*
 * The Olimex demo board has a single built in LED.  This function simply
 * toggles its state. 
 */
void prvToggleOnBoardLED( void );

/*
 * Checks that all the demo application tasks are still executing without error
 * - as described at the top of the file.
 */
static portLONG prvCheckOtherTasksAreStillRunning( unsigned portLONG ulMemCheckTaskCount );

/*
 * The task that executes at the highest priority and calls 
 * prvCheckOtherTasksAreStillRunning().  See the description at the top
 * of the file.
 */
static void vErrorChecks( void *pvParameters );

/*
 * Dynamically created and deleted during each cycle of the vErrorChecks()
 * task.  This is done to check the operation of the memory allocator.
 * See the top of vErrorChecks for more details.
 */
static void vMemCheckTask( void *pvParameters );

/*
 * Configure the processor for use with the Olimex demo board.  This includes
 * setup for the I/O, system clock, and access timings.
 */
static void prvSetupHardware( void );


/*-----------------------------------------------------------*/
void vTask1(void);
void vTask1(void)
    {
        
    
        
        while(1)
            {
             if(xSemaphoreTake( xSemaphore,(portTickType) 0 ) == pdTRUE)
                {
                FGPIO2_IOSET = 0x0000000F;
                vTaskDelay(  (portTickType) 50 );      
                xSemaphoreGive( xSemaphore );
                }
               
            }
    }

void vTask2(void);
void vTask2(void)
    {
        
        
        
        messageQueue = xQueueCreate(10,sizeof( unsigned int));
        
        if( messageQueue == 0)
            {
                while(1);
            }
        
        
        while(1)
            {
             if(xSemaphoreTake( xSemaphore,(portTickType) 0 )== pdTRUE)
                {
                
                    FGPIO2_IOSET = 0x000000F0;
                    vTaskDelay(  (portTickType) 50 ); 
                    FGPIO2_IOSET = 0x000000FF;
                    xSemaphoreGive( xSemaphore );
                }
             
            }
    }


static void lprintf(char *ch)
{
   vLCDCls ();
   vLCDPuts(ch);
}

int main (void)
{
    
    
	/* Setup the hardware for use with the Olimex demo board. */
	prvSetupHardware();
// initialize LCD display module  
//    vLCDInit();                 
//  	vLCDCursorOff();
	/* Start the demo/test application tasks. */
//	vStartIntegerMathTasks( tskIDLE_PRIORITY );
//	vStartLEDFlashTasks( mainLED_TASK_PRIORITY );
//	vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
//    vStartLCDTasks(mainLCD_TASK_PRIORITY);

xTaskCreate( vTask1,"Task1",configMINIMAL_STACK_SIZE,NULL,1,&xTask1);
xTaskCreate( vTask2,"Task2",configMINIMAL_STACK_SIZE,NULL,1,&xTask2);


	/* Start the check task - which is defined in this file. */
//	xTaskCreate( vErrorChecks, ( signed portCHAR * ) "Check", configMINIMAL_STACK_SIZE, NULL, mainCHECK_TASK_PRIORITY, NULL );

	/* Now all the tasks have been started - start the scheduler.
	NOTE : Tasks run in system mode and the scheduler runs in Supervisor mode.
	The processor MUST be in supervisor mode when vTaskStartScheduler is 
	called.  The demo applications included in the FreeRTOS.org download switch
	to supervisor mode prior to main being called.  If you are not using one of
	these demo application projects then ensure Supervisor mode is used here. */
	vTaskStartScheduler();

	/* Should never reach here! */
	return 0;
}


/*-----------------------------------------------------------*/

static void prvSetupHardware( void )
{
	#ifdef RUN_FROM_RAM
		/* Remap the interrupt vectors to RAM if we are are running from RAM. */
		SCB_MEMMAP = 2;
	#endif
 PINSEL0 = 0x00000000;
    PINSEL1 = 0x00000000;
    PINSEL2 = 0x00000000;
    PINSEL3 = 0x00000000;
    PINSEL4 = 0x00000000;
    PINSEL5 = 0x00000000;
    PINSEL6 = 0x00000000;
    PINSEL7 = 0x00000000;
    PINSEL8 = 0x00000000;
    PINSEL9 = 0x00000000;
    PINSEL10 = 0x00000000;
    
    GPIO0_IODIR = 0x00000000;
    GPIO1_IODIR = 0x00000000;
	GPIO0_IOSET = 0x00000000;
    GPIO1_IOSET = 0x00000000;
    
    FGPIO0_IODIR = 0x00000000;
    FGPIO1_IODIR = 0x00000000;
    
    
    FGPIO0_IOSET = 0x00000000;
    FGPIO1_IOSET = 0x00000000;
    FGPIO2_IOSET = 0x00000000;
    
    
	/* Configure the RS2332 pins.  All other pins remain at their default of 0. */
	PINSEL0 |= mainTX_ENABLE;
	PINSEL0 |= mainRX_ENABLE;

	/* Set all GPIO to output other than the P0.14 (BSL), and the JTAG pins.  
	The JTAG pins are left as input as I'm not sure what will happen if the 
	Wiggler is connected after powerup - not that it would be a good idea to
	do that anyway. */
    GPIO0_IODIR = Speaker;
    FGPIO2_IOMASK = 0xFFFFFFFF - mainP2_LEDs;
    FGPIO2_IODIR = mainP2_LEDs;
    
        
	/* Setup the PLL to multiply the XTAL input by 4. */
    /* PLL is setup in bott.s file */

	/* Activate the PLL by turning it on then feeding the correct sequence of bytes. */
    /* PLL is setup in boot.s file */

	/* Setup and turn on the MAM.  Three cycle access is used due to the fast
	PLL used.  It is possible faster overall performance could be obtained by
	tuning the MAM and PLL settings. */
	/* MAM is setup in boot.s file */

	/* Setup the peripheral bus to be the same as the PLL output. */
	/* VPB / APB is set in boot.s file */ 
	
	/* Initialise LED outputs. */
//	vParTestInitialise();
}
/*-----------------------------------------------------------*/

void prvToggleOnBoardLED( void )
{
unsigned portLONG ulState;

	ulState = GPIO0_IOPIN;
	if( ulState & mainON_BOARD_LED_BIT )
	{
		GPIO0_IOCLR = mainON_BOARD_LED_BIT;
	}
	else
	{
		GPIO0_IOSET = mainON_BOARD_LED_BIT;
	}	
}
/*-----------------------------------------------------------*/

static portLONG prvCheckOtherTasksAreStillRunning( unsigned portLONG ulMemCheckTaskCount )
{
portLONG lReturn = ( portLONG ) pdPASS;

	/* Check all the demo tasks (other than the flash tasks) to ensure
	that they are all still running, and that none of them have detected
	an error. */

	if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	{
		lReturn = ( portLONG ) pdFAIL;
	}

/*	if( xAreComTestTasksStillRunning() != pdTRUE )
	{
		lReturn = ( portLONG ) pdFAIL;
	}

	if( xArePollingQueuesStillRunning() != pdTRUE )
	{
		lReturn = ( portLONG ) pdFAIL;
	}

	if( xAreMathsTaskStillRunning() != pdTRUE )
	{
		lReturn = ( portLONG ) pdFAIL;
	}

	if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		lReturn = ( portLONG ) pdFAIL;
	}

	if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		lReturn = ( portLONG ) pdFAIL;
	}

	if( xAreBlockingQueuesStillRunning() != pdTRUE )
	{
		lReturn = ( portLONG ) pdFAIL;
	}
*/
	if( ulMemCheckTaskCount == mainCOUNT_INITIAL_VALUE )
	{
		/* The vMemCheckTask did not increment the counter - it must
		have failed. */
		lReturn = ( portLONG ) pdFAIL;
	}

	return lReturn;
}
/*-----------------------------------------------------------*/

static void vMemCheckTask( void *pvParameters )
{
unsigned portLONG *pulMemCheckTaskRunningCounter;
void *pvMem1, *pvMem2, *pvMem3;
static portLONG lErrorOccurred = pdFALSE;

	/* This task is dynamically created then deleted during each cycle of the
	vErrorChecks task to check the operation of the memory allocator.  Each time
	the task is created memory is allocated for the stack and TCB.  Each time
	the task is deleted this memory is returned to the heap.  This task itself
	exercises the allocator by allocating and freeing blocks. 
	
	The task executes at the idle priority so does not require a delay. 
	
	pulMemCheckTaskRunningCounter is incremented each cycle to indicate to the
	vErrorChecks() task that this task is still executing without error. */

	pulMemCheckTaskRunningCounter = ( unsigned portLONG * ) pvParameters;

	for( ;; )
	{
		if( lErrorOccurred == pdFALSE )
		{
			/* We have never seen an error so increment the counter. */
			( *pulMemCheckTaskRunningCounter )++;
		}

		/* Allocate some memory - just to give the allocator some extra 
		exercise.  This has to be in a critical section to ensure the
		task does not get deleted while it has memory allocated. */
		vTaskSuspendAll();
		{
			pvMem1 = pvPortMalloc( mainMEM_CHECK_SIZE_1 );
			if( pvMem1 == NULL )
			{
				lErrorOccurred = pdTRUE;
			}
			else
			{
				memset( pvMem1, 0xaa, mainMEM_CHECK_SIZE_1 );
				vPortFree( pvMem1 );
			}
		}
		xTaskResumeAll();

		/* Again - with a different size block. */
		vTaskSuspendAll();
		{
			pvMem2 = pvPortMalloc( mainMEM_CHECK_SIZE_2 );
			if( pvMem2 == NULL )
			{
				lErrorOccurred = pdTRUE;
			}
			else
			{
				memset( pvMem2, 0xaa, mainMEM_CHECK_SIZE_2 );
				vPortFree( pvMem2 );
			}
		}
		xTaskResumeAll();

		/* Again - with a different size block. */
		vTaskSuspendAll();
		{
			pvMem3 = pvPortMalloc( mainMEM_CHECK_SIZE_3 );
			if( pvMem3 == NULL )
			{
				lErrorOccurred = pdTRUE;
			}
			else
			{
				memset( pvMem3, 0xaa, mainMEM_CHECK_SIZE_3 );
				vPortFree( pvMem3 );
			}
		}
		xTaskResumeAll();
	}
}

/************************************** EOF *********************************/