diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2014-08-08 14:42:07 +0300 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2014-08-08 14:42:07 +0300 |
| commit | a6163888f3c56123b1db313743c6147ba498732c (patch) | |
| tree | ff7d15d991d1d09ba6cbc0cec80924f57445bfdd /third_party/FreeRTOS/Demo/Common/Minimal/integer.c | |
| parent | c3e4c9a25c2910d2d66d52215b3406b13d5b23d5 (diff) | |
Add third_party libs
Diffstat (limited to 'third_party/FreeRTOS/Demo/Common/Minimal/integer.c')
| -rw-r--r-- | third_party/FreeRTOS/Demo/Common/Minimal/integer.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/third_party/FreeRTOS/Demo/Common/Minimal/integer.c b/third_party/FreeRTOS/Demo/Common/Minimal/integer.c new file mode 100644 index 0000000..76ea423 --- /dev/null +++ b/third_party/FreeRTOS/Demo/Common/Minimal/integer.c @@ -0,0 +1,201 @@ +/*
+ FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
+ All rights reserved
+
+ VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
+
+ ***************************************************************************
+ * *
+ * FreeRTOS provides completely free yet professionally developed, *
+ * robust, strictly quality controlled, supported, and cross *
+ * platform software that has become a de facto standard. *
+ * *
+ * Help yourself get started quickly and support the FreeRTOS *
+ * project by purchasing a FreeRTOS tutorial book, reference *
+ * manual, or both from: http://www.FreeRTOS.org/Documentation *
+ * *
+ * Thank you! *
+ * *
+ ***************************************************************************
+
+ This file is part of the FreeRTOS distribution.
+
+ FreeRTOS is free software; you can redistribute it and/or modify it under
+ the terms of the GNU General Public License (version 2) as published by the
+ Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
+
+ >>! NOTE: The modification to the GPL is included to allow you to distribute
+ >>! a combined work that includes FreeRTOS without being obliged to provide
+ >>! the source code for proprietary components outside of the FreeRTOS
+ >>! kernel.
+
+ FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ FOR A PARTICULAR PURPOSE. Full license text is available from the following
+ link: http://www.freertos.org/a00114.html
+
+ 1 tab == 4 spaces!
+
+ ***************************************************************************
+ * *
+ * Having a problem? Start by reading the FAQ "My application does *
+ * not run, what could be wrong?" *
+ * *
+ * http://www.FreeRTOS.org/FAQHelp.html *
+ * *
+ ***************************************************************************
+
+ http://www.FreeRTOS.org - Documentation, books, training, latest versions,
+ license and Real Time Engineers Ltd. contact details.
+
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
+ including FreeRTOS+Trace - an indispensable productivity tool, a DOS
+ compatible FAT file system, and our tiny thread aware UDP/IP stack.
+
+ http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
+ Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
+ licenses offer ticketed support, indemnification and middleware.
+
+ http://www.SafeRTOS.com - High Integrity Systems also provide a safety
+ engineered and independently SIL3 certified version for use in safety and
+ mission critical applications that require provable dependability.
+
+ 1 tab == 4 spaces!
+*/
+
+/*
+ * Creates one or more tasks that repeatedly perform a set of integer
+ * calculations. The result of each run-time calculation is compared to the
+ * known expected result - with a mismatch being indicative of an error in the
+ * context switch mechanism.
+ */
+
+#include <stdlib.h>
+
+/* Scheduler include files. */
+#include "FreeRTOS.h"
+#include "task.h"
+
+/* Demo program include files. */
+#include "integer.h"
+
+/* The constants used in the calculation. */
+#define intgCONST1 ( ( long ) 123 )
+#define intgCONST2 ( ( long ) 234567 )
+#define intgCONST3 ( ( long ) -3 )
+#define intgCONST4 ( ( long ) 7 )
+#define intgEXPECTED_ANSWER ( ( ( intgCONST1 + intgCONST2 ) * intgCONST3 ) / intgCONST4 )
+
+#define intgSTACK_SIZE configMINIMAL_STACK_SIZE
+
+/* As this is the minimal version, we will only create one task. */
+#define intgNUMBER_OF_TASKS ( 1 )
+
+/* The task function. Repeatedly performs a 32 bit calculation, checking the
+result against the expected result. If the result is incorrect then the
+context switch must have caused some corruption. */
+static portTASK_FUNCTION_PROTO( vCompeteingIntMathTask, pvParameters );
+
+/* Variables that are set to true within the calculation task to indicate
+that the task is still executing. The check task sets the variable back to
+false, flagging an error if the variable is still false the next time it
+is called. */
+static volatile signed portBASE_TYPE xTaskCheck[ intgNUMBER_OF_TASKS ] = { ( signed portBASE_TYPE ) pdFALSE };
+
+/*-----------------------------------------------------------*/
+
+void vStartIntegerMathTasks( unsigned portBASE_TYPE uxPriority )
+{
+short sTask;
+
+ for( sTask = 0; sTask < intgNUMBER_OF_TASKS; sTask++ )
+ {
+ xTaskCreate( vCompeteingIntMathTask, ( signed char * ) "IntMath", intgSTACK_SIZE, ( void * ) &( xTaskCheck[ sTask ] ), uxPriority, ( xTaskHandle * ) NULL );
+ }
+}
+/*-----------------------------------------------------------*/
+
+static portTASK_FUNCTION( vCompeteingIntMathTask, pvParameters )
+{
+/* These variables are all effectively set to constants so they are volatile to
+ensure the compiler does not just get rid of them. */
+volatile long lValue;
+short sError = pdFALSE;
+volatile signed portBASE_TYPE *pxTaskHasExecuted;
+
+ /* Set a pointer to the variable we are going to set to true each
+ iteration. This is also a good test of the parameter passing mechanism
+ within each port. */
+ pxTaskHasExecuted = ( volatile signed portBASE_TYPE * ) pvParameters;
+
+ /* Keep performing a calculation and checking the result against a constant. */
+ for( ;; )
+ {
+ /* Perform the calculation. This will store partial value in
+ registers, resulting in a good test of the context switch mechanism. */
+ lValue = intgCONST1;
+ lValue += intgCONST2;
+
+ /* Yield in case cooperative scheduling is being used. */
+ #if configUSE_PREEMPTION == 0
+ {
+ taskYIELD();
+ }
+ #endif
+
+ /* Finish off the calculation. */
+ lValue *= intgCONST3;
+ lValue /= intgCONST4;
+
+ /* If the calculation is found to be incorrect we stop setting the
+ TaskHasExecuted variable so the check task can see an error has
+ occurred. */
+ if( lValue != intgEXPECTED_ANSWER ) /*lint !e774 volatile used to prevent this being optimised out. */
+ {
+ sError = pdTRUE;
+ }
+
+ if( sError == pdFALSE )
+ {
+ /* We have not encountered any errors, so set the flag that show
+ we are still executing. This will be periodically cleared by
+ the check task. */
+ portENTER_CRITICAL();
+ *pxTaskHasExecuted = pdTRUE;
+ portEXIT_CRITICAL();
+ }
+
+ /* Yield in case cooperative scheduling is being used. */
+ #if configUSE_PREEMPTION == 0
+ {
+ taskYIELD();
+ }
+ #endif
+ }
+}
+/*-----------------------------------------------------------*/
+
+/* This is called to check that all the created tasks are still running. */
+portBASE_TYPE xAreIntegerMathsTaskStillRunning( void )
+{
+portBASE_TYPE xReturn = pdTRUE;
+short sTask;
+
+ /* Check the maths tasks are still running by ensuring their check variables
+ are still being set to true. */
+ for( sTask = 0; sTask < intgNUMBER_OF_TASKS; sTask++ )
+ {
+ if( xTaskCheck[ sTask ] == pdFALSE )
+ {
+ /* The check has not incremented so an error exists. */
+ xReturn = pdFALSE;
+ }
+
+ /* Reset the check variable so we can tell if it has been set by
+ the next time around. */
+ xTaskCheck[ sTask ] = pdFALSE;
+ }
+
+ return xReturn;
+}
+
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