@ -31,13 +31,13 @@
* defined and / or created within this file :
*
* " Check " task - This only executes every five seconds but has the highest
* priority so is guaranteed to get processor time . Its main function is to
* priority so is guaranteed to get processor time . Its main function is to
* check that all the standard demo tasks are still operational . The check
* task will write an error message to the console should an error be detected
* within any of the demo tasks . The check task also toggles the LED defined
* by mainCHECK_LED every 5 seconds while the system is error free , with the
* toggle rate increasing to every 500 ms should an error occur .
*
*
* " Reg test " tasks - These fill the registers with known values , then check
* that each register still contains its expected value . Each task uses
* different values . The tasks run with very low priority so get preempted very
@ -92,7 +92,7 @@ error has been detected. */
/* The LED toggled by the Check task. */
# define mainCHECK_LED ( 7 )
/* The first LED used by the ComTest tasks. One LED toggles each time a
/* The first LED used by the ComTest tasks. One LED toggles each time a
character is transmitted , and one each time a character is received and
verified as being the expected character . */
# define mainCOMTEST_LED ( 4 )
@ -125,7 +125,7 @@ static void prvSetupHardware( void );
/*
* Execute all of the check functions to ensure the tests haven ' t failed .
*/
*/
static void prvCheckTask ( void * pvParameters ) ;
/*
@ -149,7 +149,7 @@ int main( void )
{
/* Configure any hardware required for this demo. */
prvSetupHardware ( ) ;
/* Create all the other standard demo tasks. These serve no purpose other
than to test the port and demonstrate the use of the FreeRTOS API . */
vStartLEDFlashTasks ( tskIDLE_PRIORITY ) ;
@ -164,10 +164,10 @@ int main( void )
vStartCountingSemaphoreTasks ( ) ;
vStartRecursiveMutexTasks ( ) ;
vAltStartComTestTasks ( mainCOM_TEST_PRIORITY , 0 , mainCOMTEST_LED ) ;
/* prvCheckTask uses sprintf so requires more stack. */
xTaskCreate ( prvCheckTask , " Check " , configMINIMAL_STACK_SIZE , NULL , mainCHECK_TASK_PRIORITY , NULL ) ;
/* The RegTest tasks as described at the top of this file. */
xTaskCreate ( prvFirstRegTestTask , " Rreg1 " , configMINIMAL_STACK_SIZE , mainREG_TEST_1_PARAMETER , mainREG_TEST_PRIORITY , NULL ) ;
xTaskCreate ( prvSecondRegTestTask , " Rreg2 " , configMINIMAL_STACK_SIZE , mainREG_TEST_2_PARAMETER , mainREG_TEST_PRIORITY , NULL ) ;
@ -178,7 +178,7 @@ int main( void )
/* Finally start the scheduler. */
vTaskStartScheduler ( ) ;
/* Will only reach here if there is insufficient heap available to start
the scheduler . */
for ( ; ; ) ;
@ -192,8 +192,11 @@ static void prvSetupHardware( void )
}
/*-----------------------------------------------------------*/
void vApplicationStackOverflowHook ( void )
void vApplicationStackOverflowHook ( TaskHandle_t xTask , char * pcTaskName )
{
( void ) xTask ;
( void ) pcTaskName ;
/* Look at pxCurrentTCB to see which task overflowed its stack. */
for ( ; ; )
{
@ -204,7 +207,7 @@ void vApplicationStackOverflowHook( void )
void _general_exception_handler ( unsigned long ulCause , unsigned long ulStatus )
{
/* This overrides the definition provided by the kernel. Other exceptions
/* This overrides the definition provided by the kernel. Other exceptions
should be handled here . */
for ( ; ; )
{
@ -227,8 +230,8 @@ const char * pcMessage;
{
/* Wait until it is time to run the tests again. */
vTaskDelayUntil ( & xLastExecutionTime , ulTicksToWait ) ;
/* Have any of the standard demo tasks detected an error in their
/* Have any of the standard demo tasks detected an error in their
operation ? */
if ( xAreIntegerMathsTaskStillRunning ( ) ! = pdTRUE )
{
@ -300,7 +303,7 @@ const char * pcMessage;
else if ( ulLastRegTest2 = = ulRegTest2Counter )
{
/* ulRegTest2Counter is no longer being incremented, indicating
that an error has been discovered in prvSecondRegTestTask ( ) . */
that an error has been discovered in prvSecondRegTestTask ( ) . */
ulTicksToWait = mainERROR_PERIOD ;
pcMessage = " Error: Reg Test2. \n " ;
}
@ -308,19 +311,19 @@ const char * pcMessage;
{
pcMessage = NULL ;
}
/* Remember the counter values this time around so a counter failing
to be incremented correctly can be spotted . */
ulLastRegTest1 = ulRegTest1Counter ;
ulLastRegTest2 = ulRegTest2Counter ;
/* Print out an error message if there is one. Mutual exclusion is
/* Print out an error message if there is one. Mutual exclusion is
not used as this is the only task accessing stdout . */
if ( pcMessage ! = NULL )
{
printf ( pcMessage ) ;
}
/* Provide visual feedback of the system status. If the LED is toggled
every 5 seconds then no errors have been found . If the LED is toggled
every 500 ms then at least one error has been found . */
@ -334,17 +337,17 @@ static void prvFirstRegTestTask( void *pvParameters )
/* Check the parameters are passed in as expected. */
if ( pvParameters ! = mainREG_TEST_1_PARAMETER )
{
/* Don't execute any further so an error is recognised by the check
/* Don't execute any further so an error is recognised by the check
task . */
vTaskDelete ( NULL ) ;
}
/* Fill registers with known values, then check that each register still
contains its expected value . An incorrect value is indicative of an error
in the context switching process .
in the context switching process .
If no errors are found ulRegTest1Counter is incremented . The check task
will recognise an error if ulRegTest1Counter stops being incremented .
will recognise an error if ulRegTest1Counter stops being incremented .
This task also performs a manual yield in the middle of its execution , just
to increase the test coverage . */
asm volatile (
@ -438,15 +441,15 @@ static void prvSecondRegTestTask( void *pvParameters )
/* Check the parameters are passed in as expected. */
if ( pvParameters ! = mainREG_TEST_2_PARAMETER )
{
/* Don't execute any further so an error is recognised by the check
/* Don't execute any further so an error is recognised by the check
task . */
vTaskDelete ( NULL ) ;
}
/* Fill registers with known values, then check that each register still
contains its expected value . An incorrect value is indicative of an error
in the context switching process .
in the context switching process .
If no errors are found ulRegTest2Counter is incremented . The check task
will recognise an error if ulRegTest2Counter stops being incremented . */
asm volatile (
RichardBarry
5 years ago
committed by
GitHub