BUTTON - BASIC Stamp Command Reference
Page 86
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BASIC Stamp Programming Manual 2.0b
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www.parallaxinc.com
demonstration of switch bounce, see the demo program for the Count
instruction.)
BUTTON also lets PBASIC react to a button press the way your computer
keyboard does to a key press. When you press a key, a character
immediately appears on the screen. If you hold the key down, there’s a
delay, then a rapid-fire stream of characters appears on the screen.
BUTTON’s auto-repeat function can be set up to work much the same
way.
BUTTON is designed for use inside a program loop. Each time through
the loop, BUTTON checks the state of the specified pin. When it first
matches DownState, BUTTON debounces the switch. Then, in accordance
with TargetState, it either branches to address (TargetState = 1) or doesn’t
(TargetState = 0).
If the switch stays in DownState, BUTTON counts the number of program
loops that execute. When this count equals Delay, BUTTON once again
triggers the action specified by TargetState and address. Hereafter, if the
switch remains in DownState, BUTTON waits Rate number of cycles
between actions. The Workspace variable is used by BUTTON to keep
track of how many cycles have occurred since the pin switched to
TargetState or since the last auto-repeat.
BUTTON does not stop program execution. In order for its delay and auto
repeat functions to work properly, BUTTON must be executed from
within a program loop.
Figure 5.1: Sample BUTTON
circuits. Active-high (left) and
active-low (right).
to I/O pin
PB Switch
10 k
Ω
Vdd
Vss
active-high
(downstate = 1)
to I/O pin
PB Switch
10 k
Ω
Vdd
Vss
active-low
(downstate = 0)
Содержание BASIC Stamp 2e
Страница 1: ...BASIC Stamp Programming Manual Version 2 0c...
Страница 30: ...Introduction to the BASIC Stamps Page 28 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 34: ...Quick Start Guide Page 32 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 90: ...BUTTON BASIC Stamp Command Reference Page 88 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 118: ...END BASIC Stamp Command Reference Page 116 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 128: ...FREQOUT BASIC Stamp Command Reference Page 126 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 196: ...NAP BASIC Stamp Command Reference Page 194 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 206: ...OWIN BASIC Stamp Command Reference Page 204 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 214: ...OWOUT BASIC Stamp Command Reference Page 212 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 216: ...PAUSE BASIC Stamp Command Reference Page 214 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 226: ...POLLMODE BASIC Stamp Command Reference Page 224 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 232: ...POLLOUT BASIC Stamp Command Reference Page 230 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 236: ...POLLRUN BASIC Stamp Command Reference Page 234 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 240: ...POLLWAIT BASIC Stamp Command Reference Page 238 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 262: ...RCTIME BASIC Stamp Command Reference Page 260 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 274: ...RUN BASIC Stamp Command Reference Page 272 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 310: ...SEROUT BASIC Stamp Command Reference Page 308 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 324: ...STOP BASIC Stamp Command Reference Page 322 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 340: ...ASCII Chart Page 338 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 342: ...Reserved Words Page 340 BASIC Stamp Programming Manual 2 0b www parallaxinc com...
Страница 346: ...Conversion Formatters Page 344 BASIC Stamp Programming Manual 2 0b www parallaxinc com...