相比于GetTickCount来说,同样是返回的ms级的当前时钟(计算机启动后经历的时间间隔),但是精度要比WM_TIMER消息映射高,不过使用之前必须将 Winmm.lib 和 Mmsystem.h 添加到工程中。如果需要更高的精度控制,QueryPerformanceFrequency和QueryPerformanceCounter就能派上用场了。这两个函数是Windows提供的仅供W...
// 指向TimerTaskEntry对象,一个TimerTaskEntry包含一个TimerTask,TimerTaskEntry是可复用的 private TimerTaskList.TimerTaskEntry timerTaskEntry = null; // 取消当前任务,就是从TimerTaskEntry移出TimerTask,并且把当前的timerTaskEntry置空 public synchronized void cancel() { if(timerTaskEntry != null) { ti...
在文章APIs you never heard of - the Timer APIs的评论中,Larry Osterman写到: Centaur, QPC is heavyweight, and is documented as such. timeGetTime is faster but much less accurate. I actually checked the code for timeGetTime and GetTickCount(). GetTickCount() takes the number of clock interrup...
PIC16F877A单片机的Timer1是16位的,我们利用此定时器实现一个10ms的定时,在定时中断里我们再判断1s是否到了,到了之后将LED灯状态取反。#include #define u8 xiangwangzihui 2021-11-25 08:32:04 ucosii软件定时器的时钟节拍应该不是注释的10ms秒吧? 于uc/os-ii的系统时钟节拍,可是我看到这个有点不解,...
内置定时器“爬行”EN作为前端开发,我们经常会遇到的场景,比如用户点击获取验证码按钮时,没有反应,大...
* These functions should only be called in OSAL_PwrMgr.c*/externvoidosal_sleep_timers(void);externvoidosal_unsleep_timers(void);/** Read the system clock - returns milliseconds*/externuint32 osal_GetSystemClock(void);/** Get the next OSAL timer expiration. ...
(timer_create(CLOCK_REALTIME, &sev, &timerid) == -1) { perror("timer_create"); exit(EXIT_FAILURE); } // 设置定时器初始值和间隔时间 its.it_value.tv_sec = 0; // 初始延迟0秒 its.it_value.tv_nsec = 20 * 1000000; // 初始延迟20ms(纳秒) its.it_interval.tv_sec = 0...
MaxClockSkew: A 64-bit signed integer containing the Acceptable clock skew. KILE implementations, which use the LSAD for the configuration database, can directly access theMaxClockSkewfield in the Kerberos Policy Information. The maximumticketlifetime is configured separately forTGTsandservice tickets:...
支持GPIO 快速翻转(2 clock) 输入模式 输入施密特触发器激活 由GPIOx_PUPDR 寄存器激活上拉/下拉电阻控制 通过读取输入数据寄存器获取I/O 状态 开漏模式: 输出数据寄存器写 0 激活输出 N-MOS(输出低),写 1 端口处于高阻态(P-MOS 不被激活) 推挽模式: 输出数据寄存器写 0 激活输出 N-MOS(输出低),写 1 激...
3.2.4.9.5 ClockType (Get) (Opnum 38) 3.2.4.9.6 ClockType (Put) (Opnum 39) 3.2.4.9.7 EventsLost (Get) (Opnum 40) 3.2.4.9.8 ExtendedModes (Get) (Opnum 42) 3.2.4.9.9 ExtendedModes (Put) (Opnum 43) 3.2.4.9.10 FlushTimer (Get) (Opnum 44) 3.2.4.9.11 FlushTimer (Put) (...