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Tidy up and comment.

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This commit is contained in:
Richard Barry 2009-01-28 12:21:11 +00:00
parent dd9ed87596
commit f5e095e34f
11 changed files with 157 additions and 451 deletions
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88
Demo/NEC_V850ES_Fx3_IAR/main.c
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@ -47,6 +47,27 @@
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.
* In addition to the standard demo tasks, the following tasks and tests are
* defined and/or created within this file:
*
* "Check" task - 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.
*
* "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
* frequently. A register containing an unexpected value is indicative of an
* error in the context switching mechanism.
*
*/
/* Standard include files. */
#include <stdlib.h>
#include <string.h>
@ -81,46 +102,50 @@
#define mainGEN_QUEUE_TASK_PRIORITY ( tskIDLE_PRIORITY )
#define mainCOMTEST_PRIORITY ( tskIDLE_PRIORITY + 1 )
/* Passed into the check task just as a test that the parameter passing
mechanism is working correctly. */
#define mainCHECK_PARAMETER ( ( void * ) 0x12345678 )
/* The period between executions of the check task. */
#define mainNO_ERROR_DELAY ( ( portTickType ) 3000 / portTICK_RATE_MS )
#define mainERROR_DELAY ( ( portTickType ) 500 / portTICK_RATE_MS )
/* The LEDs used by the demos. */
#define mainCHECK_TASK_LED ( 3 )
#define mainCOMTEST_LED ( 5 )
/* The baud rate used by the comtest task. */
#define mainBAUD_RATE ( 9600 )
/* The task function for the "Check" task. */
static void prvCheckTask( void *pvParameters );
/* low level initialization prototype */
unsigned portCHAR __low_level_init(void);
static void prvSetupHardware( void );
extern void vRegTest1( void *pvParameters );
extern void vRegTest2( void *pvParameters );
/*-----------------------------------------------------------*/
/* The implementation of the 'check' task as described at the top of this file. */
static void prvCheckTask( void *pvParameters );
/* Called by the startup code to initialise the run time system. */
unsigned portCHAR __low_level_init(void);
/* Just sets up the LED outputs. Most generic setup is done in
__low_level_init(). */
static void prvSetupHardware( void );
/* The RegTest functions as described at the top of this file. */
extern void vRegTest1( void *pvParameters );
extern void vRegTest2( void *pvParameters );
/* A variable that will get set to fail if a RegTest task finds an error. The
variable is inspected by the 'Check' task. */
static volatile portLONG lRegTestStatus = pdPASS;
void vRegTestFailed( void )
{
lRegTestStatus = pdFAIL;
/* Do not return from here as the reg test tasks clobber all registers so
function calls may not function correctly. */
for( ;; );
}
/*-----------------------------------------------------------*/
/* Create all the demo tasks then start the scheduler. */
void main( void )
{
/* Just sets up the LED outputs. */
prvSetupHardware();
/* Standard demo tasks. */
vStartLEDFlashTasks( mainFLASH_PRIORITY );
vStartSemaphoreTasks( mainSEM_TEST_PRIORITY );
vStartPolledQueueTasks( mainQUEUE_POLL_PRIORITY );
@ -130,9 +155,10 @@ void main( void )
vStartBlockingQueueTasks( mainBLOCK_Q_PRIORITY );
vAltStartComTestTasks( mainCOMTEST_PRIORITY, mainBAUD_RATE, mainCOMTEST_LED );
/* Create the tasks defined within this file. */
/* Create the check task as described at the top of this file. */
xTaskCreate( prvCheckTask, "Check", configMINIMAL_STACK_SIZE, mainCHECK_PARAMETER, mainCHECK_TASK_PRIORITY, NULL );
/* Create the RegTest tasks as described at the top of this file. */
xTaskCreate( vRegTest1, "Reg1", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
xTaskCreate( vRegTest2, "Reg2", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL );
@ -160,6 +186,8 @@ portTickType xDelayPeriod = mainNO_ERROR_DELAY, xLastWakeTime;
xDelayPeriod = mainERROR_DELAY;
}
/* Initialise xLastWakeTime before it is used. After this point it is not
written to directly. */
xLastWakeTime = xTaskGetTickCount();
/* Cycle for ever, delaying then checking all the other tasks are still
@ -287,14 +315,32 @@ unsigned portCHAR psval = 0;
return pdTRUE;
}
/*-----------------------------------------------------------*/
static void prvSetupHardware( void )
{
/* Setup the LED outputs. */
vParTestInitialise();
/* Any additional hardware configuration can be added here. */
}
/*-----------------------------------------------------------*/
void vApplicationStackOverflowHook( void )
{
/* This will be called if a task overflows its stack. pxCurrentTCB
can be inspected to see which is the offending task. */
for( ;; );
}
/*-----------------------------------------------------------*/
void vRegTestFailed( void )
{
/* Called by the RegTest tasks if an error is found. lRegTestStatus is
inspected by the check task. */
lRegTestStatus = pdFAIL;
/* Do not return from here as the reg test tasks clobber all registers so
function calls may not function correctly. */
for( ;; );
}