From a6163888f3c56123b1db313743c6147ba498732c Mon Sep 17 00:00:00 2001 From: Yuval Adam Date: Fri, 8 Aug 2014 14:42:07 +0300 Subject: Add third_party libs --- third_party/FreeRTOS/Demo/Common/Minimal/integer.c | 201 +++++++++++++++++++++ 1 file changed, 201 insertions(+) create mode 100644 third_party/FreeRTOS/Demo/Common/Minimal/integer.c (limited to 'third_party/FreeRTOS/Demo/Common/Minimal/integer.c') 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 + +/* 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; +} + -- cgit v1.3.1