脑#

初始化 Brain 类#

要在您的项目中使用 EXP Brain，请首先按如下方式初始化它：

# Create a new object "brain" with the Brain class.
brain = Brain()

This brain object will be used in all subsequent examples throughout this API documentation when referring to Brain class methods and attributes.

Brain 类具有六个预定义属性：

battery - 提供有关 EXP Brain 电池的信息，包括容量、温度、电压和电流。
button - 允许您检测按钮按下并为 EXP Brain 上的按钮事件分配功能。
timer - 提供测量经过时间的功能并为 EXP Brain 上基于时间的事件分配函数。
screen - 使您能够在 EXP Brain 的屏幕上显示文本和绘制图像。
sdcard - 提供对存储在 EXP Brain 的 SD 卡上的文件的访问。
three_wire_port - Provides access to 3-Wire Sensors connected to the EXP Brain’s 3-Wire Ports. Each port is identified by a letter (a through h) and can be accessed using the format brain.three_wire_port.x, where x is the port letter. For example, brain.three_wire_port.a refers to the Sensor connected to port A.

属性

除了属性之外，Brain 类还提供了几种可以直接使用的方法。

The brain.play_sound(sound, volume) command plays a sound on the Brain.

参数	描述
声音	有效的 SoundType。
体积	可选。音量，最大为 100。

**返回：**无。

# Play a sound of type TADA.
brain.play_sound(SoundType.TADA)

The brain.play_note(octave, note, duration, volume) command plays a note on the Brain.

**返回：**无。

# Play a note on the Brain.
brain.play_note(1, 4, 200, 50)

The brain.play_file(filename, volume) command plays a sound file in .wav format on the Brain.

参数	描述
文件名	要播放的声音文件。
体积	可选。音量，最大为 100。

**返回：**无。

# Play the sound file titled "myfile.wav" on the Brain.
brain.play_file('myfile.wav', 50)

The brain.sound_off() command stops any sound that is playing.

**返回：**无。

# Turn off the sound on the Brain.
brain.sound_off()

The brain.sound_is_active() command checks whether a sound is playing.

Returns: True if a sound is playing. False if a sound is not playing.

The brain.sound_duration() command gets the total duration of the currently playing sound.

**返回：**以毫秒为单位的持续时间。

The brain.sound_remaining() command gets the remaining duration of the currently playing sound.

**返回：**以毫秒为单位的持续时间。