脑

介绍

VEX EXP 脑感应类别提供了与大脑的按钮和连接的电池进行交互的方法。

This page uses brain as the example Brain name. Replace it with your own configured name as needed.

以下是所有方法的列表：

获取器 — 返回来自电池和按钮的数据。

• pressing — Returns whether the specified button is being pressed.

• voltage — Returns the battery voltage.

• current — Returns the battery current draw.

• capacity — Returns the remaining battery capacity.

回调函数 - 注册按钮按下或释放时要调用的函数。

• pressed — Registers a function to be called when the specified button is pressed.

• released — Registers a function to be called when the specified button is released.

获取器

pressing

pressing returns a Boolean indicating whether a specific button on the Brain is currently being pressed. This method must be called on a specific button object, such as buttonCheck (see full list of button objects below).

• True — The specified button is being pressed.

• False — The specified button is not being pressed.

用法：
此方法可以使用以下三种按钮对象之一：

按钮	命令
buttonCheck	brain.buttonCheck.pressing() — The Check button
buttonLeft	brain.buttonLeft.pressing() — The Left button
buttonRight	brain.buttonRight.pressing() — The Right button

参数	描述
	此方法没有参数。

# Turn when the check button is pressed
while True:
    if brain.buttonCheck.pressing():
        drivetrain.turn(RIGHT)
    else:
        drivetrain.stop()

voltage

Voltage is the electrical pressure supplied to the battery. voltage returns the voltage of the battery as a decimal (float), which can help you check whether the battery is charged enough for the robot to run reliably, ranging from 7.0 to 8.0 Volts.

Usage:
brain.battery.voltage(units)

参数	描述
units	Optional. The unit that represents the voltage: MV (default) — Millivolts, or VOLT

# Display the current voltage of the battery
brain.screen.print(brain.battery.voltage())

current

Current is how much electrical flow the robot is using from the battery. current returns the current drawn from the battery in amps as a decimal (float), which can help you see how hard the robot is working or whether motors may be under extra load, ranging from 0.0 to 15.0 Amps.

Usage:
brain.battery.current()

参数	描述
	此方法没有参数。

# Display the current of the battery
brain.screen.print(brain.battery.current())

capacity

capacity returns the remaining battery level, as a percentage from 0% to 100%.

Usage:
brain.battery.capacity()

参数	描述
	此方法没有参数。

# Display the current battery capacity
brain.screen.print(brain.battery.capacity())

回调函数

pressed

pressed registers a function to be called when a specific button on the Brain is pressed. This method must be called on a specific button object, such as buttonCheck — (see full list of button objects below).

用法：
此方法可以使用以下三种按钮对象之一：

按钮	命令
buttonCheck	brain.buttonCheck.pressed(callback, arg) — The Check button
buttonLeft	brain.buttonLeft.pressed(callback, arg) — The Left button
buttonRight	brain.buttonRight.pressed(callback, arg) — The Right button

参数	描述
callback	一个预先定义好的函数，当按下指定的按钮时执行。
arg	Optional. A tuple containing arguments to pass to the callback function. See Functions with Parameters for more information.

# Turn in a circle when the left button
# is pressed
def button_pressed():
    drivetrain.turn_for(RIGHT, 360, DEGREES)

brain.buttonLeft.pressed(button_pressed)

released

released registers a function to be called when a specific button on the Brain is released. This method must be called on a specific button object, such as buttonCheck — (see full list of button objects below).

用法：
此方法可以使用以下三种按钮对象之一：

按钮	命令
buttonCheck	brain.buttonCheck.released(callback, arg) — The Check button
buttonLeft	brain.buttonLeft.released(callback, arg) — The Left button
buttonRight	brain.buttonRight.released(callback, arg) — The Right button

参数	描述
callback	一个预先定义好的函数，当指定的按钮被释放时执行。
arg	Optional. A tuple containing arguments to pass to the callback function. See Functions with Parameters for more information.

# Turn in a circle when the left button
# is released
def button_released():
    drivetrain.turn_for(LEFT, 360, DEGREES)

brain.buttonLeft.released(button_released)