123 lines
3.4 KiB
C
123 lines
3.4 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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* @brief Utilities for CPU Load calculation
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2014 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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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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