145 lines
4.9 KiB
C
145 lines
4.9 KiB
C
/**
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******************************************************************************
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* @file cpu_utils.c
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* @author MCD Application Team
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* @version V1.1.0
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* @date 20-November-2014
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* @brief Utilities for CPU Load calculation
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/********************** NOTES **********************************************
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To use this module, the following steps should be followed :
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1- in the _OS_Config.h file (ex. FreeRTOSConfig.h) enable the following macros :
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- #define configUSE_IDLE_HOOK 1
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- #define configUSE_TICK_HOOK 1
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2- in the _OS_Config.h define the following macros :
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- #define traceTASK_SWITCHED_IN() extern void StartIdleMonitor(void); \
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StartIdleMonitor()
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- #define traceTASK_SWITCHED_OUT() extern void EndIdleMonitor(void); \
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EndIdleMonitor()
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*******************************************************************************/
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/* Includes ------------------------------------------------------------------*/
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#include "cpu_utils.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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xTaskHandle xIdleHandle = NULL;
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__IO uint32_t osCPU_Usage = 0;
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uint32_t osCPU_IdleStartTime = 0;
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uint32_t osCPU_IdleSpentTime = 0;
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uint32_t osCPU_TotalIdleTime = 0;
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Application Idle Hook
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* @param None
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* @retval None
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*/
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void vApplicationIdleHook(void)
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{
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if( xIdleHandle == NULL )
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{
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/* Store the handle to the idle task. */
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xIdleHandle = xTaskGetCurrentTaskHandle();
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}
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}
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/**
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* @brief Application Idle Hook
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* @param None
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* @retval None
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*/
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void vApplicationTickHook (void)
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{
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static int tick = 0;
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if(tick ++ > CALCULATION_PERIOD)
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{
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tick = 0;
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if(osCPU_TotalIdleTime > 1000)
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{
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osCPU_TotalIdleTime = 1000;
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}
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osCPU_Usage = (100 - (osCPU_TotalIdleTime * 100) / CALCULATION_PERIOD);
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osCPU_TotalIdleTime = 0;
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}
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}
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/**
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* @brief Start Idle monitor
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* @param None
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* @retval None
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*/
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void StartIdleMonitor (void)
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{
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if( xTaskGetCurrentTaskHandle() == xIdleHandle )
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{
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osCPU_IdleStartTime = xTaskGetTickCountFromISR();
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}
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}
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/**
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* @brief Stop Idle monitor
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* @param None
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* @retval None
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*/
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void EndIdleMonitor (void)
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{
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if( xTaskGetCurrentTaskHandle() == xIdleHandle )
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{
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/* Store the handle to the idle task. */
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osCPU_IdleSpentTime = xTaskGetTickCountFromISR() - osCPU_IdleStartTime;
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osCPU_TotalIdleTime += osCPU_IdleSpentTime;
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}
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}
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/**
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* @brief Stop Idle monitor
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* @param None
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* @retval None
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*/
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uint16_t osGetCPUUsage (void)
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{
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return (uint16_t)osCPU_Usage;
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}
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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