计时器#

介绍#

VEX GO 中的计时器允许您跟踪经过的时间并根据时间间隔执行操作。它可用于测量某项任务所需的时间，或重置计时器以进行新的计时操作。

以下是所有方法的列表：

方法——控制并与大脑的计时器互动。

  • reset – Resets the timer to zero.

  • time – Returns how much time has passed.

  • event – Registers a function to be called after a specified number of milliseconds.

构造函数——创建额外的计时器。

  • Timer – Creates an additional timer.

重置#

reset sets the timer to zero. This can be used to time additional sections of code within the same project.

用法：
timer.reset()

参数

描述

该方法没有参数。

 
# Build Used: Super Code Base 2.0
def main():
    # Reset the timer when the bumper is pressed
    while True:
        console.clear()
        console.print(timer.time(SECONDS))
        wait(50, MSEC)
        if bumper.is_pressed():
            timer.reset()

# Start threads — Do not delete
start_thread(main)

时间#

time returns the time since the timer was last reset as a decimal. The timer is automatically reset at the start of a project.

用法：
timer.time(units)

参数

描述

units

The unit that represents the time: MSEC (default) – milliseconds, or SECONDS

 
# Build Used: Super Code Base 2.0
def main():
    # Display the time until the bumper is pressed
    while True:
        console.clear()
        console.print(timer.time(SECONDS))
        wait(50, MSEC)
        if bumper.is_pressed():
            timer.reset()

# Start threads — Do not delete
start_thread(main)

事件#

event calls a function after a specified amount of time passes.

Usage:
timer.event(callback, delay, arg)

参数

描述

callback

当计时器事件发生时执行的函数。

delay

函数调用前的延迟，以毫秒为单位。

arg

可选。包含要传递给回调函数的参数的元组。有关更多信息，请参阅带参数的函数。

 
# Build Used: Super Code Base 2.0
def timer_event():
    drivetrain.drive_for(FORWARD, 200, MM)

def main():
    # Drive forward after a 5000 millisecond delay
    timer.event(timer_event, 5000)

# Start threads — Do not delete
start_thread(main)

构造函数#

Timer#

Timer 创建一个新的计时器。2 Timer 对象将在创建后立即开始计数，并可与所有 timer 方法配合使用。

用法：
my_timer = Timer()

参数

描述

此构造函数没有参数。

 
def main():
    # Display the time of two timers
    wait(2, SECONDS)
    timer_1 = Timer()
    while True:
        console.clear()
        console.print("Timer: ", timer.time(SECONDS))
        console.new_line()
        console.print("timer_1: ", timer_1.time(SECONDS))
        wait(15, MSEC)

# Start threads — Do not delete
start_thread(main)
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