| /* | |
| FreeRTOS V8.2.1 - Copyright (C) 2015 Real Time Engineers Ltd. | |
| All rights reserved | |
| VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
| 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 on the following | |
| link: http://www.freertos.org/a00114.html | |
| *************************************************************************** | |
| * * | |
| * FreeRTOS provides completely free yet professionally developed, * | |
| * robust, strictly quality controlled, supported, and cross * | |
| * platform software that is more than just the market leader, it * | |
| * is the industry's de facto standard. * | |
| * * | |
| * Help yourself get started quickly while simultaneously helping * | |
| * to support the FreeRTOS project by purchasing a FreeRTOS * | |
| * tutorial book, reference manual, or both: * | |
| * http://www.FreeRTOS.org/Documentation * | |
| * * | |
| *************************************************************************** | |
| http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading | |
| the FAQ page "My application does not run, what could be wrong?". Have you | |
| defined configASSERT()? | |
| http://www.FreeRTOS.org/support - In return for receiving this top quality | |
| embedded software for free we request you assist our global community by | |
| participating in the support forum. | |
| http://www.FreeRTOS.org/training - Investing in training allows your team to | |
| be as productive as possible as early as possible. Now you can receive | |
| FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers | |
| Ltd, and the world's leading authority on the world's leading RTOS. | |
| 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.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate. | |
| Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS. | |
| http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High | |
| Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS | |
| licenses offer ticketed support, indemnification and commercial 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! | |
| */ | |
| /* 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 vConfigureTimerForRunTimeStats( 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 ulGetRunTimeCounterValue( 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; | |
| } | |
| /*-----------------------------------------------------------*/ | |