X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=FreeRTOS%2FDemo%2FCORTEX_M4F_MSP432_LaunchPad_IAR_CCS_Keil%2FFull_Demo%2FRunTimeStatsTimer.c;fp=FreeRTOS%2FDemo%2FCORTEX_M4F_MSP432_LaunchPad_IAR_CCS_Keil%2FFull_Demo%2FRunTimeStatsTimer.c;h=4bbd762dfe5d8248e22917c42bb21649fc8c966b;hb=71ccce588869c5a7643d6bc1e64f4dc6bdae81f2;hp=0000000000000000000000000000000000000000;hpb=62c041d220c4812a1ea4350cac687998fcd5d733;p=freertos diff --git a/FreeRTOS/Demo/CORTEX_M4F_MSP432_LaunchPad_IAR_CCS_Keil/Full_Demo/RunTimeStatsTimer.c b/FreeRTOS/Demo/CORTEX_M4F_MSP432_LaunchPad_IAR_CCS_Keil/Full_Demo/RunTimeStatsTimer.c new file mode 100644 index 000000000..4bbd762df --- /dev/null +++ b/FreeRTOS/Demo/CORTEX_M4F_MSP432_LaunchPad_IAR_CCS_Keil/Full_Demo/RunTimeStatsTimer.c @@ -0,0 +1,126 @@ +/* + 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. */ +#define runtimeSHIFT_13 13 +#define runtimeOVERFLOW_BIT_13 ( 1UL << ( 32UL - runtimeSHIFT_13 ) ) +static const uint32_t ulPrescaleBits = runtimeSHIFT_13; +static const uint32_t ulOverflowBit = runtimeOVERFLOW_BIT_13; + +/*-----------------------------------------------------------*/ + +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 += ulOverflowBit; + } + ulLastCounterValue = ulValueNow; + + /* There is no prescale on the counter, so simulate in software. */ + ulValueNow = ( ulValueNow >> ulPrescaleBits ) + ulOverflows; + + return ulValueNow; +} +/*-----------------------------------------------------------*/ +