Datasheet

Propeller™ P8X32A Datasheet www.parallax.com
Copyright © Parallax Inc. Page 20 of 37 Rev 1.1 9/12/2008
Spin Command
Returns
Value
Description
((IF ┆ IFNOT)) Condition(s)

IfStatement(s)
〈
ELSEIF Condition(s)
 ElseIfStatement(s)〉…
〈ELSEIFNOT Condition(s)
 ElseIfStatement(s)〉…
〈ELSE
 ElseStatement(s)〉
Test condition(s) and execute block of code if valid.
IF and ELSEIF each test for TRUE. IFNOT and ELSEIFNOT each test for
FALSE.
INA 〈[Pin(s)]〉 9 Input register for 32-bit ports A.
LOCKCLR (ID) 9 Clear semaphore to false and get its previous state; TRUE or FALSE.
LOCKNEW 9 Check out new semaphore and get its ID; 0-7, or -1 if none were available.
LOCKRET (ID)
Return semaphore back to semaphore pool, releasing it for future
LOCKNEW requests.
LOCKSET (ID) 9 Set semaphore to true and get its previous state; TRUE or FALSE.
LONG Symbol 〈[Count]〉 Declare long-sized symbol in VAR block.
〈Symbol〉 LONG Data 〈[Count]〉 Declare long-aligned and/or long-sized data in DAT block.
LONG [BaseAddress] 〈[Offset]〉 9 Read/write long of main memory.
LONGFILL (StartAddress, Value, Count) Fill longs of main memory with a value.
LONGMOVE (DestAddress, SrcAddress, Count) Copy longs from one region to another in main memory.
LOOKDOWN (Value:ExpressionList) 9 Get the one-based index of a value in a list.
LOOKDOWNZ (Value:ExpressionList) 9 Get the zero-based index of a value in a list.
LOOKUP (Index:ExpressionList) 9 Get value from a one-based index position of a list.
LOOKUPZ (Index:ExpressionList) 9 Get value from a zero-based index position of a list.
NEXT
Skip remaining statements of REPEAT loop and continue with the next
loop iteration.
OBJ
Symbol
〈[Count]〉:"Object" 〈  Symbol 〈[Count]〉: "Object"〉…
Declare symbol object references.
OUTA 〈[Pin(s)]〉 9 Output register for 32-bit port A. Default is 0 (ground) upon cog startup.
PAR 9 Cog Boot Parameter register.
PHSA 9 Counter A Phase Lock Loop (PLL) register.
PHSB 9 Counter B Phase Lock Loop (PLL) register.
PRI Name 〈(Par 〈,Par〉…)〉 〈:RVal〉 〈| LVar 〈[Cnt]〉〉 〈,LVar 〈[Cnt]〉〉…
SourceCodeStatements
Declare private method with optional parameters, return value and local
variables.
PUB Name 〈(Par 〈,Par〉…)〉 〈:RVal〉 〈| LVar 〈[Cnt]〉〉 〈,LVar 〈[Cnt]〉〉…
SourceCodeStatements
Declare public method with optional parameters, return value and local
variables.
QUIT Exit from REPEAT loop immediately.
REBOOT Reset the Propeller chip.
REPEAT 〈Count〉
 Statement(s)
Execute code block repetitively, either infinitely, or for a finite number of
iterations.
REPEAT Variable FROM Start TO Finish 〈STEP Delta〉
 Statement(s)
Execute code block repetitively, for finite, counted iterations.
REPEAT ((UNTIL┆ WHILE)) Condition(s)
 Statement(s)
Execute code block repetitively, zero-to-many conditional iterations.
REPEAT
 Statement(s)
((
UNTIL┆ WHILE)) Condition(s)
Execute code block repetitively, one-to-many conditional iterations.
RESULT 9 Return value variable for PUB/PRI methods.
RETURN 〈Value〉 9 Exit from PUB/PRI method with optional return Value.
ROUND (FloatConstant) 9
Round floating-point constant to the nearest integer at compile-time, in any
block.
SPR [Index] 9 Special Purpose Register array.
STRCOMP (StringAddress1, StringAddress2) 9 Compare two strings for equality.
STRING (StringExpression) 9 Declare in-line string constant and get its address.