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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rtthread.h>
#include <rthw.h>
#include "cpuusage.h"
#include "lcd.h"
#ifdef RT_USING_RTGUI
#include <rtgui/event.h>
#include <rtgui/rtgui_server.h>
#include <rtgui/rtgui_system.h>
#endif
#define CPU_USAGE_CALC_TICK 10
#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)
{
loop = 0;
/* get total count */
rt_enter_critical();
tick = rt_tick_get();
while(rt_tick_get() - tick < CPU_USAGE_CALC_TICK)
{
total_count ++;
while (loop < CPU_USAGE_LOOP) loop ++;
}
rt_exit_critical();
}
count = 0;
loop = 0;
/* get CPU usage */
tick = rt_tick_get();
while (rt_tick_get() - tick < CPU_USAGE_CALC_TICK)
{
count ++;
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);
}
extern struct rt_messagequeue mq;
extern rt_thread_t info_tid;
static void cpu_thread_entry(void *parameter)
{
#ifdef RT_USING_RTGUI
struct rtgui_event_command ecmd;
RTGUI_EVENT_COMMAND_INIT(&ecmd);
ecmd.type = RTGUI_CMD_USER_INT;
ecmd.command_id = CPU_UPDATE;
#else
struct lcd_msg msg;
#endif
while (1)
{
#ifdef RT_USING_RTGUI
rtgui_thread_send(info_tid, &ecmd.parent, sizeof(ecmd));
#else
msg.type = CPU_MSG;
msg.major = cpu_usage_major;
msg.minor = cpu_usage_minor;
rt_mq_send(&mq, &msg, sizeof(msg));
#endif
rt_thread_delay(20);
}
}
static rt_thread_t cpu_thread;
void rt_hw_cpu_init(void)
{
cpu_usage_init();
cpu_thread = rt_thread_create("cpu", cpu_thread_entry, RT_NULL, 384, 27, 5);
if(cpu_thread != RT_NULL)
rt_thread_startup(cpu_thread);
}
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