playtone.md

playTone(frequency, duration, pause [, flags [, freqIncr]])

Play a tone

@status current Introduced in 2.1.0

Parameters

• frequency (number) tone frequency in Hz (from 150 to 15000)

• duration (number) length of the tone in milliseconds

• pause (number) length of the silence after the tone in milliseconds

• flags (number):

• 0 or not present play with normal priority.

• PLAY_BACKGROUND play in background (built in vario function uses this context)

• PLAY_NOW play immediately

• freqIncr (number) positive number increases the tone pitch (frequency with time), negative number decreases it. The frequency changes every 10 milliseconds, the change is freqIncr * 10Hz. The valid range is from -127 to 127.

Return value

none