diff options
Diffstat (limited to 'FreeRTOS/Demo/Common/Full/integer.c')
| -rw-r--r-- | FreeRTOS/Demo/Common/Full/integer.c | 493 |
1 files changed, 246 insertions, 247 deletions
diff --git a/FreeRTOS/Demo/Common/Full/integer.c b/FreeRTOS/Demo/Common/Full/integer.c index f96b29f9a..a6012ef40 100644 --- a/FreeRTOS/Demo/Common/Full/integer.c +++ b/FreeRTOS/Demo/Common/Full/integer.c @@ -26,21 +26,21 @@ */
/*
-Changes from V1.2.3
-
- + The created tasks now include calls to tskYIELD(), allowing them to be used
- with the cooperative scheduler.
-*/
+ * Changes from V1.2.3
+ *
+ + The created tasks now include calls to tskYIELD(), allowing them to be used
+ + with the cooperative scheduler.
+ */
/**
- * This does the same as flop. c, but uses variables of type long instead of
- * type double.
+ * This does the same as flop. c, but uses variables of type long instead of
+ * type double.
*
- * As with flop. c, the tasks created in this file are a good test of the
- * scheduler context switch mechanism. The processor has to access 32bit
- * variables in two or four chunks (depending on the processor). The low
- * priority of these tasks means there is a high probability that a context
- * switch will occur mid calculation. See the flop. c documentation for
+ * As with flop. c, the tasks created in this file are a good test of the
+ * scheduler context switch mechanism. The processor has to access 32bit
+ * variables in two or four chunks (depending on the processor). The low
+ * priority of these tasks means there is a high probability that a context
+ * switch will occur mid calculation. See the flop. c documentation for
* more information.
*
* \page IntegerC integer.c
@@ -49,11 +49,11 @@ Changes from V1.2.3 */
/*
-Changes from V1.2.1
-
- + The constants used in the calculations are larger to ensure the
- optimiser does not truncate them to 16 bits.
-*/
+ * Changes from V1.2.1
+ *
+ + The constants used in the calculations are larger to ensure the
+ + optimiser does not truncate them to 16 bits.
+ */
#include <stdlib.h>
@@ -65,263 +65,262 @@ Changes from V1.2.1 /* Demo program include files. */
#include "integer.h"
-#define intgSTACK_SIZE ( ( unsigned short ) 256 )
-#define intgNUMBER_OF_TASKS ( 8 )
+#define intgSTACK_SIZE ( ( unsigned short ) 256 )
+#define intgNUMBER_OF_TASKS ( 8 )
-/* Four tasks, each of which performs a different calculation on four byte
-variables. Each of the four is created twice. */
-static void vCompeteingIntMathTask1( void *pvParameters );
-static void vCompeteingIntMathTask2( void *pvParameters );
-static void vCompeteingIntMathTask3( void *pvParameters );
-static void vCompeteingIntMathTask4( void *pvParameters );
+/* Four tasks, each of which performs a different calculation on four byte
+ * variables. Each of the four is created twice. */
+static void vCompeteingIntMathTask1( void * pvParameters );
+static void vCompeteingIntMathTask2( void * pvParameters );
+static void vCompeteingIntMathTask3( void * pvParameters );
+static void vCompeteingIntMathTask4( void * pvParameters );
-/* These variables are used to check that all the tasks are still running. If a
-task gets a calculation wrong it will stop incrementing its check variable. */
+/* These variables are used to check that all the tasks are still running. If a
+* task gets a calculation wrong it will stop incrementing its check variable. */
static volatile unsigned short usTaskCheck[ intgNUMBER_OF_TASKS ] = { ( unsigned short ) 0 };
/*-----------------------------------------------------------*/
void vStartIntegerMathTasks( unsigned portBASE_TYPE uxPriority )
{
- xTaskCreate( vCompeteingIntMathTask1, "IntMath1", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 0 ] ), uxPriority, NULL );
- xTaskCreate( vCompeteingIntMathTask2, "IntMath2", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 1 ] ), uxPriority, NULL );
- xTaskCreate( vCompeteingIntMathTask3, "IntMath3", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 2 ] ), uxPriority, NULL );
- xTaskCreate( vCompeteingIntMathTask4, "IntMath4", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 3 ] ), uxPriority, NULL );
- xTaskCreate( vCompeteingIntMathTask1, "IntMath5", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 4 ] ), uxPriority, NULL );
- xTaskCreate( vCompeteingIntMathTask2, "IntMath6", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 5 ] ), uxPriority, NULL );
- xTaskCreate( vCompeteingIntMathTask3, "IntMath7", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 6 ] ), uxPriority, NULL );
- xTaskCreate( vCompeteingIntMathTask4, "IntMath8", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 7 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask1, "IntMath1", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 0 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask2, "IntMath2", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 1 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask3, "IntMath3", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 2 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask4, "IntMath4", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 3 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask1, "IntMath5", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 4 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask2, "IntMath6", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 5 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask3, "IntMath7", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 6 ] ), uxPriority, NULL );
+ xTaskCreate( vCompeteingIntMathTask4, "IntMath8", intgSTACK_SIZE, ( void * ) &( usTaskCheck[ 7 ] ), uxPriority, NULL );
}
/*-----------------------------------------------------------*/
-static void vCompeteingIntMathTask1( void *pvParameters )
+static void vCompeteingIntMathTask1( void * pvParameters )
{
-long l1, l2, l3, l4;
-short sError = pdFALSE;
-volatile unsigned short *pusTaskCheckVariable;
-const long lAnswer = ( ( long ) 74565L + ( long ) 1234567L ) * ( long ) -918L;
-const char * const pcTaskStartMsg = "Integer math task 1 started.\r\n";
-const char * const pcTaskFailMsg = "Integer math task 1 failed.\r\n";
-
- /* Queue a message for printing to say the task has started. */
- vPrintDisplayMessage( &pcTaskStartMsg );
-
- /* The variable this task increments to show it is still running is passed in
- as the parameter. */
- pusTaskCheckVariable = ( unsigned short * ) pvParameters;
-
- /* Keep performing a calculation and checking the result against a constant. */
- for(;;)
- {
- l1 = ( long ) 74565L;
- l2 = ( long ) 1234567L;
- l3 = ( long ) -918L;
-
- l4 = ( l1 + l2 ) * l3;
-
- taskYIELD();
-
- /* If the calculation does not match the expected constant, stop the
- increment of the check variable. */
- if( l4 != lAnswer )
- {
- vPrintDisplayMessage( &pcTaskFailMsg );
- sError = pdTRUE;
- }
-
- if( sError == pdFALSE )
- {
- /* If the calculation has always been correct, increment the check
- variable so we know this task is still running okay. */
- ( *pusTaskCheckVariable )++;
- }
- }
+ long l1, l2, l3, l4;
+ short sError = pdFALSE;
+ volatile unsigned short * pusTaskCheckVariable;
+ const long lAnswer = ( ( long ) 74565L + ( long ) 1234567L ) * ( long ) -918L;
+ const char * const pcTaskStartMsg = "Integer math task 1 started.\r\n";
+ const char * const pcTaskFailMsg = "Integer math task 1 failed.\r\n";
+
+ /* Queue a message for printing to say the task has started. */
+ vPrintDisplayMessage( &pcTaskStartMsg );
+
+ /* The variable this task increments to show it is still running is passed in
+ * as the parameter. */
+ pusTaskCheckVariable = ( unsigned short * ) pvParameters;
+
+ /* Keep performing a calculation and checking the result against a constant. */
+ for( ; ; )
+ {
+ l1 = ( long ) 74565L;
+ l2 = ( long ) 1234567L;
+ l3 = ( long ) -918L;
+
+ l4 = ( l1 + l2 ) * l3;
+
+ taskYIELD();
+
+ /* If the calculation does not match the expected constant, stop the
+ * increment of the check variable. */
+ if( l4 != lAnswer )
+ {
+ vPrintDisplayMessage( &pcTaskFailMsg );
+ sError = pdTRUE;
+ }
+
+ if( sError == pdFALSE )
+ {
+ /* If the calculation has always been correct, increment the check
+ * variable so we know this task is still running okay. */
+ ( *pusTaskCheckVariable )++;
+ }
+ }
}
/*-----------------------------------------------------------*/
-static void vCompeteingIntMathTask2( void *pvParameters )
+static void vCompeteingIntMathTask2( void * pvParameters )
{
-long l1, l2, l3, l4;
-short sError = pdFALSE;
-volatile unsigned short *pusTaskCheckVariable;
-const long lAnswer = ( ( long ) -389000L / ( long ) 329999L ) * ( long ) -89L;
-const char * const pcTaskStartMsg = "Integer math task 2 started.\r\n";
-const char * const pcTaskFailMsg = "Integer math task 2 failed.\r\n";
-
- /* Queue a message for printing to say the task has started. */
- vPrintDisplayMessage( &pcTaskStartMsg );
-
- /* The variable this task increments to show it is still running is passed in
- as the parameter. */
- pusTaskCheckVariable = ( unsigned short * ) pvParameters;
-
- /* Keep performing a calculation and checking the result against a constant. */
- for( ;; )
- {
- l1 = -389000L;
- l2 = 329999L;
- l3 = -89L;
-
- l4 = ( l1 / l2 ) * l3;
-
- taskYIELD();
-
- /* If the calculation does not match the expected constant, stop the
- increment of the check variable. */
- if( l4 != lAnswer )
- {
- vPrintDisplayMessage( &pcTaskFailMsg );
- sError = pdTRUE;
- }
-
- if( sError == pdFALSE )
- {
- /* If the calculation has always been correct, increment the check
- variable so we know this task is still running okay. */
- ( *pusTaskCheckVariable )++;
- }
- }
+ long l1, l2, l3, l4;
+ short sError = pdFALSE;
+ volatile unsigned short * pusTaskCheckVariable;
+ const long lAnswer = ( ( long ) -389000L / ( long ) 329999L ) * ( long ) -89L;
+ const char * const pcTaskStartMsg = "Integer math task 2 started.\r\n";
+ const char * const pcTaskFailMsg = "Integer math task 2 failed.\r\n";
+
+ /* Queue a message for printing to say the task has started. */
+ vPrintDisplayMessage( &pcTaskStartMsg );
+
+ /* The variable this task increments to show it is still running is passed in
+ * as the parameter. */
+ pusTaskCheckVariable = ( unsigned short * ) pvParameters;
+
+ /* Keep performing a calculation and checking the result against a constant. */
+ for( ; ; )
+ {
+ l1 = -389000L;
+ l2 = 329999L;
+ l3 = -89L;
+
+ l4 = ( l1 / l2 ) * l3;
+
+ taskYIELD();
+
+ /* If the calculation does not match the expected constant, stop the
+ * increment of the check variable. */
+ if( l4 != lAnswer )
+ {
+ vPrintDisplayMessage( &pcTaskFailMsg );
+ sError = pdTRUE;
+ }
+
+ if( sError == pdFALSE )
+ {
+ /* If the calculation has always been correct, increment the check
+ * variable so we know this task is still running okay. */
+ ( *pusTaskCheckVariable )++;
+ }
+ }
}
/*-----------------------------------------------------------*/
-static void vCompeteingIntMathTask3( void *pvParameters )
+static void vCompeteingIntMathTask3( void * pvParameters )
{
-long *plArray, lTotal1, lTotal2;
-short sError = pdFALSE;
-volatile unsigned short *pusTaskCheckVariable;
-const unsigned short usArraySize = ( unsigned short ) 250;
-unsigned short usPosition;
-const char * const pcTaskStartMsg = "Integer math task 3 started.\r\n";
-const char * const pcTaskFailMsg = "Integer math task 3 failed.\r\n";
-
- /* Queue a message for printing to say the task has started. */
- vPrintDisplayMessage( &pcTaskStartMsg );
-
- /* The variable this task increments to show it is still running is passed in
- as the parameter. */
- pusTaskCheckVariable = ( unsigned short * ) pvParameters;
-
- /* Create the array we are going to use for our check calculation. */
- plArray = ( long * ) pvPortMalloc( ( size_t ) 250 * sizeof( long ) );
-
- /* Keep filling the array, keeping a running total of the values placed in the
- array. Then run through the array adding up all the values. If the two totals
- do not match, stop the check variable from incrementing. */
- for( ;; )
- {
- lTotal1 = ( long ) 0;
- lTotal2 = ( long ) 0;
-
- for( usPosition = 0; usPosition < usArraySize; usPosition++ )
- {
- plArray[ usPosition ] = ( long ) usPosition + ( long ) 5;
- lTotal1 += ( long ) usPosition + ( long ) 5;
- }
-
- taskYIELD();
-
- for( usPosition = 0; usPosition < usArraySize; usPosition++ )
- {
- lTotal2 += plArray[ usPosition ];
- }
-
- if( lTotal1 != lTotal2 )
- {
- vPrintDisplayMessage( &pcTaskFailMsg );
- sError = pdTRUE;
- }
-
- taskYIELD();
-
- if( sError == pdFALSE )
- {
- /* If the calculation has always been correct, increment the check
- variable so we know this task is still running okay. */
- ( *pusTaskCheckVariable )++;
- }
- }
+ long * plArray, lTotal1, lTotal2;
+ short sError = pdFALSE;
+ volatile unsigned short * pusTaskCheckVariable;
+ const unsigned short usArraySize = ( unsigned short ) 250;
+ unsigned short usPosition;
+ const char * const pcTaskStartMsg = "Integer math task 3 started.\r\n";
+ const char * const pcTaskFailMsg = "Integer math task 3 failed.\r\n";
+
+ /* Queue a message for printing to say the task has started. */
+ vPrintDisplayMessage( &pcTaskStartMsg );
+
+ /* The variable this task increments to show it is still running is passed in
+ * as the parameter. */
+ pusTaskCheckVariable = ( unsigned short * ) pvParameters;
+
+ /* Create the array we are going to use for our check calculation. */
+ plArray = ( long * ) pvPortMalloc( ( size_t ) 250 * sizeof( long ) );
+
+ /* Keep filling the array, keeping a running total of the values placed in the
+ * array. Then run through the array adding up all the values. If the two totals
+ * do not match, stop the check variable from incrementing. */
+ for( ; ; )
+ {
+ lTotal1 = ( long ) 0;
+ lTotal2 = ( long ) 0;
+
+ for( usPosition = 0; usPosition < usArraySize; usPosition++ )
+ {
+ plArray[ usPosition ] = ( long ) usPosition + ( long ) 5;
+ lTotal1 += ( long ) usPosition + ( long ) 5;
+ }
+
+ taskYIELD();
+
+ for( usPosition = 0; usPosition < usArraySize; usPosition++ )
+ {
+ lTotal2 += plArray[ usPosition ];
+ }
+
+ if( lTotal1 != lTotal2 )
+ {
+ vPrintDisplayMessage( &pcTaskFailMsg );
+ sError = pdTRUE;
+ }
+
+ taskYIELD();
+
+ if( sError == pdFALSE )
+ {
+ /* If the calculation has always been correct, increment the check
+ * variable so we know this task is still running okay. */
+ ( *pusTaskCheckVariable )++;
+ }
+ }
}
/*-----------------------------------------------------------*/
-static void vCompeteingIntMathTask4( void *pvParameters )
+static void vCompeteingIntMathTask4( void * pvParameters )
{
-long *plArray, lTotal1, lTotal2;
-short sError = pdFALSE;
-volatile unsigned short *pusTaskCheckVariable;
-const unsigned short usArraySize = 250;
-unsigned short usPosition;
-const char * const pcTaskStartMsg = "Integer math task 4 started.\r\n";
-const char * const pcTaskFailMsg = "Integer math task 4 failed.\r\n";
-
- /* Queue a message for printing to say the task has started. */
- vPrintDisplayMessage( &pcTaskStartMsg );
-
- /* The variable this task increments to show it is still running is passed in
- as the parameter. */
- pusTaskCheckVariable = ( unsigned short * ) pvParameters;
-
- /* Create the array we are going to use for our check calculation. */
- plArray = ( long * ) pvPortMalloc( ( size_t ) 250 * sizeof( long ) );
-
- /* Keep filling the array, keeping a running total of the values placed in the
- array. Then run through the array adding up all the values. If the two totals
- do not match, stop the check variable from incrementing. */
- for( ;; )
- {
- lTotal1 = ( long ) 0;
- lTotal2 = ( long ) 0;
-
- for( usPosition = 0; usPosition < usArraySize; usPosition++ )
- {
- plArray[ usPosition ] = ( long ) usPosition * ( long ) 12;
- lTotal1 += ( long ) usPosition * ( long ) 12;
- }
-
- taskYIELD();
-
- for( usPosition = 0; usPosition < usArraySize; usPosition++ )
- {
- lTotal2 += plArray[ usPosition ];
- }
-
-
- if( lTotal1 != lTotal2 )
- {
- vPrintDisplayMessage( &pcTaskFailMsg );
- sError = pdTRUE;
- }
-
- taskYIELD();
-
- if( sError == pdFALSE )
- {
- /* If the calculation has always been correct, increment the check
- variable so we know this task is still running okay. */
- ( *pusTaskCheckVariable )++;
- }
- }
+ long * plArray, lTotal1, lTotal2;
+ short sError = pdFALSE;
+ volatile unsigned short * pusTaskCheckVariable;
+ const unsigned short usArraySize = 250;
+ unsigned short usPosition;
+ const char * const pcTaskStartMsg = "Integer math task 4 started.\r\n";
+ const char * const pcTaskFailMsg = "Integer math task 4 failed.\r\n";
+
+ /* Queue a message for printing to say the task has started. */
+ vPrintDisplayMessage( &pcTaskStartMsg );
+
+ /* The variable this task increments to show it is still running is passed in
+ * as the parameter. */
+ pusTaskCheckVariable = ( unsigned short * ) pvParameters;
+
+ /* Create the array we are going to use for our check calculation. */
+ plArray = ( long * ) pvPortMalloc( ( size_t ) 250 * sizeof( long ) );
+
+ /* Keep filling the array, keeping a running total of the values placed in the
+ * array. Then run through the array adding up all the values. If the two totals
+ * do not match, stop the check variable from incrementing. */
+ for( ; ; )
+ {
+ lTotal1 = ( long ) 0;
+ lTotal2 = ( long ) 0;
+
+ for( usPosition = 0; usPosition < usArraySize; usPosition++ )
+ {
+ plArray[ usPosition ] = ( long ) usPosition * ( long ) 12;
+ lTotal1 += ( long ) usPosition * ( long ) 12;
+ }
+
+ taskYIELD();
+
+ for( usPosition = 0; usPosition < usArraySize; usPosition++ )
+ {
+ lTotal2 += plArray[ usPosition ];
+ }
+
+ if( lTotal1 != lTotal2 )
+ {
+ vPrintDisplayMessage( &pcTaskFailMsg );
+ sError = pdTRUE;
+ }
+
+ taskYIELD();
+
+ if( sError == pdFALSE )
+ {
+ /* If the calculation has always been correct, increment the check
+ * variable so we know this task is still running okay. */
+ ( *pusTaskCheckVariable )++;
+ }
+ }
}
/*-----------------------------------------------------------*/
/* This is called to check that all the created tasks are still running. */
portBASE_TYPE xAreIntegerMathsTaskStillRunning( void )
{
-/* Keep a history of the check variables so we know if they have been incremented
-since the last call. */
-static unsigned short usLastTaskCheck[ intgNUMBER_OF_TASKS ] = { ( unsigned short ) 0 };
-portBASE_TYPE xReturn = pdTRUE, xTask;
-
- /* Check the maths tasks are still running by ensuring their check variables
- are still incrementing. */
- for( xTask = 0; xTask < intgNUMBER_OF_TASKS; xTask++ )
- {
- if( usTaskCheck[ xTask ] == usLastTaskCheck[ xTask ] )
- {
- /* The check has not incremented so an error exists. */
- xReturn = pdFALSE;
- }
-
- usLastTaskCheck[ xTask ] = usTaskCheck[ xTask ];
- }
-
- return xReturn;
+/* Keep a history of the check variables so we know if they have been incremented
+ * since the last call. */
+ static unsigned short usLastTaskCheck[ intgNUMBER_OF_TASKS ] = { ( unsigned short ) 0 };
+ portBASE_TYPE xReturn = pdTRUE, xTask;
+
+ /* Check the maths tasks are still running by ensuring their check variables
+ * are still incrementing. */
+ for( xTask = 0; xTask < intgNUMBER_OF_TASKS; xTask++ )
+ {
+ if( usTaskCheck[ xTask ] == usLastTaskCheck[ xTask ] )
+ {
+ /* The check has not incremented so an error exists. */
+ xReturn = pdFALSE;
+ }
+
+ usLastTaskCheck[ xTask ] = usTaskCheck[ xTask ];
+ }
+
+ return xReturn;
}
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