playTone(frequency, duration, pause [, flags [, freqIncr]])
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Play a tone
@status current Introduced in 2.1.0
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.
none