| /* | |
| FreeRTOS V7.4.2 - Copyright (C) 2013 Real Time Engineers Ltd. | |
| FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT | |
| http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
| *************************************************************************** | |
| * * | |
| * FreeRTOS tutorial books are available in pdf and paperback. * | |
| * Complete, revised, and edited pdf reference manuals are also * | |
| * available. * | |
| * * | |
| * Purchasing FreeRTOS documentation will not only help you, by * | |
| * ensuring you get running as quickly as possible and with an * | |
| * in-depth knowledge of how to use FreeRTOS, it will also help * | |
| * the FreeRTOS project to continue with its mission of providing * | |
| * professional grade, cross platform, de facto standard solutions * | |
| * for microcontrollers - completely free of charge! * | |
| * * | |
| * >>> See http://www.FreeRTOS.org/Documentation for details. <<< * | |
| * * | |
| * Thank you for using FreeRTOS, and thank you for your support! * | |
| * * | |
| *************************************************************************** | |
| 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. See the GNU General Public License for more | |
| details. You should have received a copy of the GNU General Public License | |
| and the FreeRTOS license exception along with FreeRTOS; if not it can be | |
| viewed here: http://www.freertos.org/a00114.html and also obtained by | |
| writing to Real Time Engineers Ltd., contact details for whom are available | |
| on the FreeRTOS WEB site. | |
| 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, and our new | |
| fully thread aware and reentrant UDP/IP stack. | |
| http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High | |
| Integrity Systems, who sell the code with commercial support, | |
| indemnification and middleware, under the OpenRTOS brand. | |
| 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. | |
| */ | |
| /* FreeRTOS includes. */ | |
| #include "FreeRTOS.h" | |
| /* Utility functions to implement run time stats on Cortex-M CPUs. The collected | |
| run time data can be viewed through the CLI interface. See the following URL for | |
| more information on run time stats: | |
| http://www.freertos.org/rtos-run-time-stats.html */ | |
| /* Addresses of registers in the Cortex-M debug hardware. */ | |
| #define rtsDWT_CYCCNT ( *( ( unsigned long * ) 0xE0001004 ) ) | |
| #define rtsDWT_CONTROL ( *( ( unsigned long * ) 0xE0001000 ) ) | |
| #define rtsSCB_DEMCR ( *( ( unsigned long * ) 0xE000EDFC ) ) | |
| #define rtsTRCENA_BIT ( 0x01000000UL ) | |
| #define rtsCOUNTER_ENABLE_BIT ( 0x01UL ) | |
| /* Simple shift divide for scaling to avoid an overflow occurring too soon. The | |
| number of bits to shift depends on the clock speed. */ | |
| #define runtimeSLOWER_CLOCK_SPEEDS ( 70000000UL ) | |
| #define runtimeSHIFT_13 13 | |
| #define runtimeOVERFLOW_BIT_13 ( 1UL << ( 32UL - runtimeSHIFT_13 ) ) | |
| #define runtimeSHIFT_14 14 | |
| #define runtimeOVERFLOW_BIT_14 ( 1UL << ( 32UL - runtimeSHIFT_14 ) ) | |
| /*-----------------------------------------------------------*/ | |
| void vMainConfigureTimerForRunTimeStats( void ) | |
| { | |
| /* Enable TRCENA. */ | |
| rtsSCB_DEMCR = rtsSCB_DEMCR | rtsTRCENA_BIT; | |
| /* Reset counter. */ | |
| rtsDWT_CYCCNT = 0; | |
| /* Enable counter. */ | |
| rtsDWT_CONTROL = rtsDWT_CONTROL | rtsCOUNTER_ENABLE_BIT; | |
| } | |
| /*-----------------------------------------------------------*/ | |
| uint32_t ulMainGetRunTimeCounterValue( void ) | |
| { | |
| static unsigned long ulLastCounterValue = 0UL, ulOverflows = 0; | |
| unsigned long ulValueNow; | |
| ulValueNow = rtsDWT_CYCCNT; | |
| /* Has the value overflowed since it was last read. */ | |
| if( ulValueNow < ulLastCounterValue ) | |
| { | |
| ulOverflows++; | |
| } | |
| ulLastCounterValue = ulValueNow; | |
| /* Cannot use configCPU_CLOCK_HZ directly as it may itself not be a constant | |
| but instead map to a variable that holds the clock speed. */ | |
| /* There is no prescale on the counter, so simulate in software. */ | |
| if( configCPU_CLOCK_HZ < runtimeSLOWER_CLOCK_SPEEDS ) | |
| { | |
| ulValueNow >>= runtimeSHIFT_13; | |
| ulValueNow += ( runtimeOVERFLOW_BIT_13 * ulOverflows ); | |
| } | |
| else | |
| { | |
| ulValueNow >>= runtimeSHIFT_14; | |
| ulValueNow += ( runtimeOVERFLOW_BIT_14 * ulOverflows ); | |
| } | |
| return ulValueNow; | |
| } | |
| /*-----------------------------------------------------------*/ | |