diff options
Diffstat (limited to 'Demo/ARM9_AT91SAM9XE_IAR/main.c')
| -rw-r--r-- | Demo/ARM9_AT91SAM9XE_IAR/main.c | 64 |
1 files changed, 55 insertions, 9 deletions
diff --git a/Demo/ARM9_AT91SAM9XE_IAR/main.c b/Demo/ARM9_AT91SAM9XE_IAR/main.c index 2229a394..010f94af 100644 --- a/Demo/ARM9_AT91SAM9XE_IAR/main.c +++ b/Demo/ARM9_AT91SAM9XE_IAR/main.c @@ -1,5 +1,5 @@ /*
- FreeRTOS.org V5.1.1 - Copyright (C) 2003-2008 Richard Barry.
+ FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry.
This file is part of the FreeRTOS.org distribution.
@@ -26,10 +26,13 @@ ***************************************************************************
***************************************************************************
* *
- * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
- * and even write all or part of your application on your behalf. *
- * See http://www.OpenRTOS.com for details of the services we provide to *
- * expedite your project. *
+ * 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. *
* *
***************************************************************************
***************************************************************************
@@ -47,6 +50,19 @@ licensing and training services.
*/
+/*
+ * Creates all the demo application tasks, then starts the scheduler. The WEB
+ * documentation provides more details of the standard demo application tasks.
+ *
+ * A "Check" task is created in addition to the standard demo tasks. This
+ * only executes every three seconds but has a high priority to ensure it gets
+ * processor time. Its main function is to check that all the standard demo
+ * tasks are still operational. If everything is running as expected then the
+ * check task will toggle an LED every 3 seconds. An error being discovered in
+ * any task will cause the toggle rate to increase to 500ms.
+ *
+ */
+
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "task.h"
@@ -57,7 +73,6 @@ #include "countsem.h"
#include "death.h"
#include "dynamic.h"
-#include "flash.h"
#include "GenQTest.h"
#include "integer.h"
#include "PollQ.h"
@@ -65,12 +80,15 @@ #include "recmutex.h"
#include "semtest.h"
#include "ParTest.h"
+#include "comtest2.h"
/* Standard includes. */
#include <stdio.h>
+/* Atmel library includes. */
+#include <pio/pio.h>
+
/* Priorities for the demo application tasks. */
-#define mainLED_TASK_PRIORITY ( tskIDLE_PRIORITY + 3 )
#define mainCOM_TEST_PRIORITY ( tskIDLE_PRIORITY + 2 )
#define mainQUEUE_POLL_PRIORITY ( tskIDLE_PRIORITY + 0 )
#define mainCHECK_TASK_PRIORITY ( tskIDLE_PRIORITY + 4 )
@@ -82,6 +100,11 @@ /* The period of the check task both in and out of the presense of an error. */
#define mainNO_ERROR_PERIOD ( 5000 / portTICK_RATE_MS )
#define mainERROR_PERIOD ( 500 / portTICK_RATE_MS );
+
+/* Constants used by the ComTest task. */
+#define mainCOM_TEST_BAUD_RATE ( 38400 )
+#define mainCOM_TEST_LED ( LED_DS1 )
+
/*-----------------------------------------------------------*/
/* Simple hardware setup required by the demo. */
@@ -93,9 +116,12 @@ static void prvCheckTask( void *pvParameters ); /*-----------------------------------------------------------*/
int main()
{
+ /* Perform any hardware setup necessary to run the demo. */
prvSetupHardware();
- /* Start the standard demo tasks. */
+ /* First create the 'standard demo' tasks. These exist just to to
+ demonstrate API functions being used and test the kernel port. More
+ information is provided on the FreeRTOS.org WEB site. */
vStartIntegerMathTasks( tskIDLE_PRIORITY );
vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
@@ -106,6 +132,7 @@ int main() vStartGenericQueueTasks( tskIDLE_PRIORITY );
vStartQueuePeekTasks();
vStartRecursiveMutexTasks();
+ vAltStartComTestTasks( mainCOM_TEST_PRIORITY, mainCOM_TEST_BAUD_RATE, mainCOM_TEST_LED );
/* Create the check task - this is the task that checks all the other tasks
are executing as expected and without reporting any errors. */
@@ -139,8 +166,11 @@ static volatile unsigned portLONG ulErrorCode = 0UL; for( ;; )
{
+ /* Delay until it is time for this task to execute again. */
vTaskDelayUntil( &xNextWakeTime, xPeriod );
+ /* Check all the other tasks in the system - latch any reported errors
+ into the ulErrorCode variable. */
if( xAreBlockingQueuesStillRunning() != pdTRUE )
{
ulErrorCode |= 0x01UL;
@@ -196,17 +226,33 @@ static volatile unsigned portLONG ulErrorCode = 0UL; ulErrorCode |= 0x400UL;
}
+ if( xAreComTestTasksStillRunning() != pdTRUE )
+ {
+ ulErrorCode |= 0x800UL;
+ }
+
+ /* Reduce the block period and in so doing increase the frequency at
+ which this task executes if any errors have been latched. The increased
+ frequency causes the LED toggle rate to increase and so gives some
+ visual feedback that an error has occurred. */
if( ulErrorCode != 0x00 )
{
xPeriod = mainERROR_PERIOD;
}
- vParTestToggleLED( LED_DS1 );
+ /* Finally toggle the LED. */
+ vParTestToggleLED( LED_POWER );
}
}
/*-----------------------------------------------------------*/
static void prvSetupHardware( void )
{
+const Pin xPins[] = { PIN_USART0_RXD, PIN_USART0_TXD };
+
+ /* Setup the LED outputs. */
vParTestInitialise();
+
+ /* Setup the pins for the UART. */
+ PIO_Configure( xPins, PIO_LISTSIZE( xPins ) );
}
|