REVERSE - BASIC Stamp Command Reference
Page 268
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BASIC Stamp Programming Manual 2.0b
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www.parallaxinc.com
Demo Program (REVERSE.bas)
' Connect the circuit shown in the REVERSE command description to I/O pin 0 and run this
' program. The LED will alternate between two states, dim and bright. The BASIC Stamp is
' using the REVERSE command to toggling I/O pin 0 between input and output states. When
' pin 0 is an input, current flows through R1, through the LED, through R2 to ground. Pin 0 is
' effectively disconnected and doesn't play a part in the circuit. The total resistance
' encountered by current flowing through the LED is R1 + R2 = 440 Ohms. When pin 0 is
' reversed to an output, current flows through R1, through the LED, and into pin 0 to ground
' (because of the 0 written to PIN0). The total resistance encountered by current flowing
' through the LED is R1, 220 Ohms. With only half the resistance, the LED glows brighter.
'{$STAMP BS1} 'STAMP directive (specifies a BS1)
PIN0 = 0 ' Put a low in the pin 0 output driver.
Again:
PAUSE 200 ' Brief (1/5th second) pause.
REVERSE 0 ' Invert pin 0 I/O direction.
GOTO Again ' Repeat forever.
Demo Program (REVERSE.bs2)
' Connect the circuit shown in the REVERSE command description to I/O pin 0 and run this
' program. The LED will alternate between two states, dim and bright. The BASIC Stamp is
' using the REVERSE command to toggling I/O pin 0 between input and output states. When
' pin 0 is an input, current flows through R1, through the LED, through R2 to ground. Pin 0 is
' effectively disconnected and doesn't play a part in the circuit. The total resistance
' encountered by current flowing through the LED is R1 + R2 = 440 Ohms. When pin 0 is
' reversed to an output, current flows through R1, through the LED, and into pin 0 to ground
' (because of the 0 written to OUT0). The total resistance encountered by current flowing
' through the LED is R1, 220 Ohms. With only half the resistance, the LED glows brighter.
'{$STAMP BS2} 'STAMP directive (specifies a BS2)
OUT0 = 0 ' Put a low in the pin 0 output driver.
Again:
PAUSE 200 ' Brief (1/5th second) pause.
REVERSE 0 ' Invert pin 0 I/O direction.
GOTO Again ' Repeat forever.
1
2
e
2
sx
2
p
2
NOTE: This is written for the BS2
but can be used for the BS2e,
BS2sx and BS2p also. Locate the
proper source code file or modify
the STAMP directive before
downloading to the BS2e, BS2sx or
BS2p.
Содержание BASIC Stamp 1
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...