Specifications

Chapter 7. I/O Facilities
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7.3 Timer and Beeper
7.3.1 Timer Functions
The timer functions (TIMEA, TIMEB, and TIMEC) are available in BHT-BASIC for accurate
time measurement.
Use these timer functions for monitoring the keyboard waiting time, communications timeout
errors, etc.
TIMEA = 100 ’10 sec
WAIT 0,&H10
BEEP
PRINT "10sec."
TIMEC = 20 ’2 sec
WAIT 0,&H41
BEEP
PRINT "2sec. or Keyboard"
7.3.2 BEEP Statement
The BEEP statement sounds a beeper and specifies the frequency of the beeper.
The example below sounds the musical scale of do, re, mi, fa, sol, la, si, and do.
READ readDat%
WHILE (readDat% >= 0)
TIMEA = 3
BEEP 2,,,readDat%
WAIT 0,&h10
READ readDat%
WEND
DATA 523,587,659,698,783,880,987,1046,-1
Specifying the frequency with value 0, 1, or 2 produces the special beeper effects; that is, the
low-, medium-, or high-pitched tone, respectively.
FOR i% = 0 TO 2
TIMEC = 20
BEEP,,,i%
WAIT 0,&h40
NEXT
NOTE
Only if setting 0, 1, or 2 or making no specification to the frequency, you can adjust
the beeper volume on the LCD when turning on the BHT. (For the adjustment of the
beeper volume, refer to the BHT User’s Manual.)