线程#

介绍#

线程允许机器人在同一程序中同时运行多个任务。它们实现了多任务处理，使机器人能够同时执行独立的动作。

注意： 必须Functions.md定义一个函数才能在线程中使用它。

构造函数——创建并启动新线程。

  • Thread – Starts a new thread that runs the specified function in parallel with the main program.

操作 – 控制正在运行的线程。

  • stop – Stops a thread manually, useful for halting background behavior.

构造函数#

Thread#

Thread creates and starts a thread. When you create a thread, you can name it to manage it individually in your project.

用法：

my_thread = Thread(my_function)

参数

描述

my_thread

（可选）新帖子的名称。

my_function

先前定义的函数的名称。

注意： 函数必须在调用之前定义**。

# Drive forward while blinking screen
def blink_screen():
    while True:
        brain.screen.clear_screen(Color.RED)
        wait(0.5, SECONDS)
        brain.screen.clear_screen()
        wait(0.5, SECONDS)

blink_screen_thread = Thread(blink_screen)
drivetrain.drive(FORWARD)


# Run multiple threads simultaneously
# Turn right, blink screen at once
def blink_screen():
    while True:
        brain.screen.clear_screen(Color.RED)
        wait(0.5, SECONDS)
        brain.screen.clear_screen()
        wait(0.5, SECONDS)

def turning():
    drivetrain.turn(RIGHT)

blink_screen_thread = Thread(blink_screen)
turning_thread = Thread(turning)

行动#

stop#

stop stops a thread manually, which is useful when a task is no longer needed or when a program needs to reset or reassign threads. Once a thread is stopped, it cannot be restarted. To run it again, you must create a new thread using Thread.

用法：

my_thread.stop()

参数

描述

my_thread

A previously started thread object. This is the name assigned when the thread was created using Thread.

 
"""
Run multiple threads simultaneously
Turn right, play a sound and display heading at once
Stop playing sounds after 2 seconds
"""
def lights():
    while True:
        optical_sensor.set_light(LEDStateType.ON)
        wait(0.5, SECONDS)
        optical_sensor.set_light(LEDStateType.OFF)
        wait(0.5, SECONDS)

def display_heading():
    while True:
        brain.screen.clear_row()
        brain.screen.set_cursor(1, 1)
        brain.screen.print("Heading: {}".format(drivetrain.heading(DEGREES)))
        wait(50, MSEC)

lights_thread = Thread(lights)     
display_heading_thread = Thread(display_heading)
drivetrain.turn(RIGHT)

wait(2, SECONDS)
lights_thread.stop()
On this page