28123 Parallax Inc, 28123 Datasheet - Page 233

• Manufacturer Part Number: 28123
• Description: TEXT WHAT'S A MICROCONTROLLER
• Manufacturer: Parallax Inc
• Type: Programmingr

Specifications of 28123

• Style: Book
• Title: What's a Microcontroller?
• Contents: Whats a Microcontroller? Text
• Product: Microcontroller Accessories
• Core Processor: PIC16C57c
• Flash: 128 Bytes
• Operating Supply Voltage: 9 V
• Board Size: 31 mm x 16 mm
• Lead Free Status / RoHS Status: Not applicable / Not applicable

DEBUG "Hyperspace...", CR
DEBUG "Done", CR
END
Your Turn – More Sound Effects
There is pretty much an endless number of ways to modify ActionTones.bs2 to get
different sound combinations. Here is just one modification to the “Hyperspace” routine:
Two Frequencies at Once
You can send two frequencies at the same time. In audio, this is called “mixing”.
Remember the
You can use the optional
command. For example, you can mix 2 and 3 kHz together like this:
PAUSE 100
FOR duration = 15 TO 1 STEP 1
NEXT
FREQOUT 9, 200, 2400
FREQOUT 9, 140, 4200
FREQOUT 9,
PAUSE 500
FOR frequency = 2000 TO 2500 STEP 20
NEXT
√
√
FREQOUT 9, duration, frequency
DEBUG "Hyperspace jump...", CR
FREQOUT Pin, Duration, Freq1 {, Freq2}
FREQOUT 9, 1000, 2000, 3000
Save your example program under the name ActionTonesYourTurn.bs2.
Have fun with this and other modifications of your own invention.
FOR duration = 15 TO 1 STEP 3
NEXT
FOR duration = 1 TO 36 STEP 3
NEXT
FOR frequency = 2000 TO 2500 STEP 15
NEXT
FOR frequency = 2500 TO 2000 STEP 15
NEXT
FREQOUT
FREQOUT 9, duration, frequency
FREQOUT 9, duration, frequency
30, 2000
command’s syntax from Activity #1:
Freq2
argument to mix two frequencies using the
FREQOUT