Then issues a short beep and returns. Enables the infrared driver. Disables the infrared driver. Returns the data byte last received by the driver, or zero if no data has been received since the last call. Resets the count of system time to zero milliseconds.
Resolution is one millisecond.
Waits for an amount of time equal to or slightly greater than sec seconds. Waits for an amount of time equal to or greater than msec milliseconds. Produces a tone at pitch frequency Hertz for length seconds. Both frequency and length are floats. The subsequent function is then used to turn the beeper on.