Buzzer Pattern

This block is used to play sound patterns on the buzzer.

You can specify the frequency in the block settings.

• Patterns are defined as strings with specific characters:

  • -: buzzer is off
  • B or b: buzzer is on
  • ~: creates a looped pattern (can be placed anywhere in the string)
  • *: doubles the speed (can be placed anywhere, and used twice for 4x speed)

• Maximum pattern length is 16 "steps"

• When calling the method, you must specify whether the new pattern can interrupt an existing pattern:

  • 0 (PL_BEEP_NOINT): cannot interrupt
  • 1 (PL_BEEP_CANINT): can interrupt

For example, a pattern like "B-B-" would turn the buzzer on, then off, then on, then off. Adding a ~ would make this pattern loop continuously, and adding * would make it play twice as fast.