122-32000 Parallax Inc, 122-32000 Datasheet - Page 280

• Manufacturer Part Number: 122-32000
• Description: MANUAL PROPELLER
• Manufacturer: Parallax Inc

Specifications of 122-32000

• Accessory Type: Manual
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: Propeller Education (PE) Kit
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

OUTA, OUTB
Output registers for 32-bit Ports A and B.
((PUB ┆ PRI))
((PUB ┆ PRI))
Returns: Current value of output Pin(s) for Port A or B, if used as a source variable.
Explanation
OUTA
the I/O pins. The
bits 0 through 31 correspond to P0 through P31. The
each of the 32 I/O pins in Port B; bits 0 through 31 correspond to P32 through P63.
NOTE:
pins so only
OUTA
low (0) bit sets the corresponding I/O pin to ground. A high (1) bit sets the corresponding I/O
pin VDD (3.3 volts). The
Each cog has access to all I/O pins at any given time. Essentially, all I/O pins are directly
connected to each cog so that there is no hub-related mutually-exclusive access involved.
Each cog maintains its own
state (low or high). Each cog’s output states is OR’d with that of the other cogs’ output states
and the resulting 32-bit value becomes the output states of Port A pins P0 through P31. The
result is that each I/O pin’s output state is the “wired-OR” of the entire cog collective. See
I/O Pins on page 26 for more information.
Page 280 · Propeller Manual v1.0
OUTA 〈
OUTB 〈
•
and
is used to both set and get the current output states of one or more I/O pins in Port A. A
Pin(s)
pins, to access in Port A (0-31) or Port B (32-63). If given as a single expression,
only the pin specified is accessed. If given as a range-expression (two expressions in
a range format; x..y) the contiguous pins from the start to end expressions are
accessed.
OUTB
OUTB
[Pin(s)]
[Pin(s)]
OUTA
is reserved for future use; the Propeller P8X32A does not include Port B I/O
is an optional expression, or a range-expression, that specifies the I/O pin, or
are two of six registers (
〉
〉
is discussed below.
OUTA
(Reserved for future use)
– Spin Language Reference
register holds the output states for each of the 32 I/O pins in Port A;
OUTA
OUTA
register defaults zero, all 0 bits, upon cog startup.
register that gives it the ability to set any I/O pin’s output
DIRA
,
DIRB
,
INA
,
OUTB
INB
,
register holds the output states for
OUTA
and
OUTB
) that directly affect