基于 STM32CubeMX 添加 RT-Thread 操作系统组件(十七)- CPU 利用率统计

概述 

       本篇只要介绍这么使用STM32CubeMx工具添加RT-Thread操作系统组件,码代码的IDE是keil。介绍单线程SRAM静态内存使用。如果还不知道,这么使用STM32CubeMx工具添加RT-Thread操作系统组件,请移步到《基于 STM32CubeMX 添加 RT-Thread 操作系统组件(一)- 详细介绍操作步骤》文章阅读。好了,喝杯茶先^_^,继续前行。上一篇介绍关于《双向链表》
在实现这个功能之前,先去RT-Thread的源码仓库中获取,该文件在 rtthread--master\examples\kernel 路径下,名字叫cpuusage.c。

链接如下:
github
码云

一、STM32CubeMx配置

CubeMx参照上一篇文章介绍来配置即可,这里就不再做讲解了。

二、KEIL IDE

  1. 在keil 工程项目视图,Application/User文件夹,打开下载好源码,找到cpuusage.c文件,添加到工程中来,如下代码:
    #include <rtthread.h>
    #include <rthw.h>
    #include "cpuusage.h"
    
    #define CPU_USAGE_CALC_TICK    1000
    #define CPU_USAGE_LOOP        100
    
    static rt_uint8_t  cpu_usage_major = 0, cpu_usage_minor= 0;
    static rt_uint32_t total_count = 0;
    
    static void cpu_usage_idle_hook()
    {
        rt_tick_t tick;
        rt_uint32_t count;
        volatile rt_uint32_t loop;
    
        if (total_count == 0)
        {
            /* get total count */
            rt_enter_critical();
            tick = rt_tick_get();
            while(rt_tick_get() - tick < CPU_USAGE_CALC_TICK)
            {
                total_count ++;
                loop = 0;
                while (loop < CPU_USAGE_LOOP) loop ++;
            }
            rt_exit_critical();
        }
    
        count = 0;
        /* get CPU usage */
        tick = rt_tick_get();
        while (rt_tick_get() - tick < CPU_USAGE_CALC_TICK)
        {
            count ++;
            loop  = 0;
            while (loop < CPU_USAGE_LOOP) loop ++;
        }
    
        /* calculate major and minor */
        if (count < total_count)
        {
            count = total_count - count;
            cpu_usage_major = (count * 100) / total_count;
            cpu_usage_minor = ((count * 100) % total_count) * 100 / total_count;
        }
        else
        {
            total_count = count;
    
            /* no CPU usage */
            cpu_usage_major = 0;
            cpu_usage_minor = 0;
        }
    }
    
    void cpu_usage_get(rt_uint8_t *major, rt_uint8_t *minor)
    {
        RT_ASSERT(major != RT_NULL);
        RT_ASSERT(minor != RT_NULL);
    
        *major = cpu_usage_major;
        *minor = cpu_usage_minor;
    }
    
    void cpu_usage_init()
    {
        /* set idle thread hook */
        rt_thread_idle_sethook(cpu_usage_idle_hook);
    }
    


  2. 在Application/User文件夹,新建cpuusage.h文件,并添加如下代码:
    #ifndef __CPUUSAGE_H__
    #define __CPUUSAGE_H__
    #include <rtthread.h>
    #include <rthw.h>
    
    
    /* 获取 cpu 利用率 */
    void cpu_usage_init(void);
    void cpu_usage_get(rt_uint8_t *major, rt_uint8_t *minor);
    
    
    #endif
    
    


  3. 在Application/User文件夹,新建app_rt_thread.c文件,并添加如下代码:
    #include "rtthread.h"
    #include "main.h"
    #include "stdio.h"
    #include <string.h>
    #include "cpuusage.h"
    
    
    
    /* 定义线程控制块 */
    static rt_thread_t led1_thread = RT_NULL;
    static rt_thread_t get_cpu_use_thread = RT_NULL;
    
    
    /* 函数声明 */
    static void led1_thread_entry(void* parameter);
    static void get_cpu_use_thread_entry(void* parameter);
    
    
    
    int MX_RT_Thread_Init(void)
    {
    	
    	cpu_usage_init();
    	
    	rt_kprintf("This is an RTT-CPU utilization statistics experiment\r\n");
    	led1_thread = /* 线程控制块指针 */
    	rt_thread_create( "led1", /* 线程名字 */
    				led1_thread_entry, /* 线程入口函数 */
    				RT_NULL, /* 线程入口函数参数 */
    				512, /* 线程栈大小 */
    				3, /* 线程的优先级 */
    				20); /* 线程时间片 */
    	/* 启动线程,开启调度 */
    	if (led1_thread != RT_NULL)
    		rt_thread_startup(led1_thread);
    	else
    		return -1;
    	
    	get_cpu_use_thread = /* 线程控制块指针 */
    	rt_thread_create( "get_cpu_use", /* 线程名字 */
    				get_cpu_use_thread_entry, /* 线程入口函数 */
    				RT_NULL, /* 线程入口函数参数 */
    				512, /* 线程栈大小 */
    				5, /* 线程的优先级 */
    				20); /* 线程时间片 */
    	if (get_cpu_use_thread != RT_NULL)
    		rt_thread_startup(get_cpu_use_thread);
    	else
    		return -1;
    }
    
    /*
    ************************************************************
    * 线程定义
    *********************************************************
    */
    static void led1_thread_entry(void* parameter)
    {
    	rt_uint16_t i;
    	while (1) {
    		HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
    		/* 模拟占用 CPU 资源,修改数值作为模拟测试 */
    		for (i = 0; i < 10000; i++);
    		
    		rt_thread_delay(500); /* 延时 5 个 tick */
    		rt_kprintf("CPU utilization \r\n");
    	}
    }
    
    static void get_cpu_use_thread_entry(void* parameter)
    {
    	rt_uint8_t major,minor;
    	while (1) {
    		/* 获取 CPU 利用率数据 */
    		cpu_usage_get(&major,&minor);
    		/* 打印 CPU 利用率 */
    		rt_kprintf("CPU utilization = %d.%d%\r\n",major,minor);
    		rt_thread_delay(1000); /* 延时 1000 个 tick */
    	}
    }
    
    
    
    
  4. 在main.c文件添加如下代码:
    /* USER CODE END Header */
    
    /* Includes ------------------------------------------------------------------*/
    #include "main.h"
    #include "usart.h"
    #include "gpio.h"
    
    /* Private includes ----------------------------------------------------------*/
    /* USER CODE BEGIN Includes */
    
    /* USER CODE END Includes */
    
    /* Private typedef -----------------------------------------------------------*/
    /* USER CODE BEGIN PTD */
    extern int MX_RT_Thread_Init(void);
    /* USER CODE END PTD */
    
    /* Private define ------------------------------------------------------------*/
    /* USER CODE BEGIN PD */
    /* USER CODE END PD */
    
    /* Private macro -------------------------------------------------------------*/
    /* USER CODE BEGIN PM */
    
    /* USER CODE END PM */
    
    /* Private variables ---------------------------------------------------------*/
    
    /* USER CODE BEGIN PV */
    
    /* USER CODE END PV */
    
    /* Private function prototypes -----------------------------------------------*/
    void SystemClock_Config(void);
    /* USER CODE BEGIN PFP */
    
    /* USER CODE END PFP */
    
    /* Private user code ---------------------------------------------------------*/
    /* USER CODE BEGIN 0 */
    
    /* USER CODE END 0 */
    
    /**
      * @brief  The application entry point.
      * @retval int
      */
    int main(void)
    {
      /* USER CODE BEGIN 1 */
    
      /* USER CODE END 1 */
    
      /* MCU Configuration--------------------------------------------------------*/
    
      /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
      HAL_Init();
    
      /* USER CODE BEGIN Init */
    
      /* USER CODE END Init */
    
      /* Configure the system clock */
      SystemClock_Config();
    
      /* USER CODE BEGIN SysInit */
    
      /* USER CODE END SysInit */
    
      /* Initialize all configured peripherals */
      MX_GPIO_Init();
      MX_USART1_UART_Init();
      /* USER CODE BEGIN 2 */
      MX_RT_Thread_Init();
      /* USER CODE END 2 */
    
      /* Infinite loop */
      /* USER CODE BEGIN WHILE */
      while (1)
      {
        /* USER CODE END WHILE */
    
        /* USER CODE BEGIN 3 */
      }
      /* USER CODE END 3 */
    }

     

  5. 自定义rt_hw_console_output()函数,在kservice.c文件添加中(重映射串口控制台到 rt_kprintf 函数)代码:
    #include "usart.h"
    .
    .
    .
    
    RT_WEAK void rt_hw_console_output(const char *str)
    {
        /* empty console output */
    	/* 进入临界段 */
    	rt_enter_critical();
    	/* 直到字符串结束 */
    	while (*str!='\0') {
    	/* 换行 */
    	if (*str=='\n') {
    		HAL_UART_Transmit(&huart1,(uint8_t *)'\r',1,1000);
    	}
    		HAL_UART_Transmit(&huart1,(uint8_t *)(str++),1,1000);
    	}
    	/* 退出临界段 */
    	rt_exit_critical();
    }

  6. 运行结果
        

    源码:git

 

 

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转载自blog.csdn.net/qq_36075612/article/details/107629133