Propeller Manual
Table Of Contents
- Preface
- Chapter 1 : Introducing the Propeller Chip
- Concept
- Package Types
- Pin Descriptions
- Specifications
- Hardware Connections
- Boot Up Procedure
- Run-Time Procedure
- Shutdown Procedure
- Block Diagram
- Shared Resources
- System Clock
- Cogs (processors)
- Hub
- I/O Pins
- System Counter
- CLK Register
- Locks
- Main Memory
- Main RAM
- Main ROM
- Character Definitions
- Log and Anti-Log Tables
- Sine Table
- Boot Loader and Spin Interpreter
- Chapter 2 : Spin Language Reference
- Structure of Propeller Objects/Spin
- Categorical Listing of Propeller Spin Language
- Spin Language Elements
- ABORT
- BYTE
- BYTEFILL
- BYTEMOVE
- CASE
- CHIPVER
- CLKFREQ
- _CLKFREQ
- CLKMODE
- _CLKMODE
- CLKSET
- CNT
- COGID
- COGINIT
- COGNEW
- COGSTOP
- CON
- CONSTANT
- Constants (pre-defined)
- CTRA, CTRB
- DAT
- DIRA, DIRB
- FILE
- FLOAT
- _FREE
- FRQA, FRQB
- IF
- IFNOT
- INA, INB
- LOCKCLR
- LOCKNEW
- LOCKRET
- LOCKSET
- LONG
- LONGFILL
- LONGMOVE
- LOOKDOWN, LOOKDOWNZ
- LOOKUP, LOOKUPZ
- NEXT
- OBJ
- Operators
- Expression Workspace
- Operator Attributes
- Unary / Binary
- Normal / Assignment
- Constant and/or Variable Expression
- Level of Precedence
- Intermediate Assignments
- Constant Assignment ‘=’
- Variable Assignment ‘:=’
- Add ‘+’, ‘+=’
- Positive ‘+’ (unary form of Add)
- Subtract ‘-’, ‘-=’
- Negate ‘-’ (unary form of Subtract)
- Decrement, pre- or post- ‘- -’
- Increment, pre- or post- ‘+ +’
- Multiply, Return Low ‘*’, ‘*=’
- Multiply, Return High ‘**’, ‘**=’
- Divide ‘/’, ‘/=’
- Modulus ‘//’, ‘//=’
- Limit Minimum ‘#>’, ‘#>=’
- Limit Maximum ‘<#’, ‘<#=’
- Square Root ‘^^’
- Absolute Value ‘||’
- Sign-Extend 7 or Post-Clear ‘~’
- Sign-Extend 15 or Post-Set ‘~~’
- Shift Arithmetic Right ‘~>’, ‘~>=’
- Random ‘?’
- Bitwise Decode ‘|<’
- Bitwise Encode ‘>|’
- Bitwise Shift Left ‘<<’, ‘<<=’
- Bitwise Shift Right ‘>>’, ‘>>=’
- Bitwise Rotate Left ‘<-’, ‘<-=’
- Bitwise Rotate Right ‘->’, ‘->=’
- Bitwise Reverse ‘><’, ‘><=’
- Bitwise AND ‘&’, ‘&=’
- Bitwise OR ‘|’, ‘|=’
- Bitwise XOR ‘^’, ‘^=’
- Bitwise NOT ‘!’
- Boolean AND ‘AND’, ‘AND=’
- Boolean OR ‘OR’, ‘OR=’
- Boolean NOT ‘NOT’
- Boolean Is Equal ‘==’, ‘===’
- Boolean Is Not Equal ‘<>’, ‘<>=’
- Boolean Is Less Than ‘<’, ‘<=’
- Boolean Is Greater Than ‘>’, ‘>=’
- Boolean Is Equal or Less ‘=<’, ‘=<=’
- Boolean Is Equal or Greater ‘=>’, ‘=>=’
- Symbol Address ‘@’
- Object Address Plus Symbol ‘@@’
- OUTA, OUTB
- PAR
- PHSA, PHSB
- PRI
- PUB
- QUIT
- REBOOT
- REPEAT
- RESULT
- RETURN
- ROUND
- SPR
- _STACK
- STRCOMP
- STRING
- STRSIZE
- Symbols
- TRUNC
- VAR
- VCFG
- VSCL
- WAITCNT
- WAITPEQ
- WAITPNE
- WAITVID
- WORD
- WORDFILL
- WORDMOVE
- _XINFREQ
- Chapter 3 : Assembly Language Reference
- The Structure of Propeller Assembly
- Categorical Listing of Propeller Assembly Language
- Assembly Language Elements
- ABS
- ABSNEG
- ADD
- ADDABS
- ADDS
- ADDSX
- ADDX
- AND
- ANDN
- CALL
- CLKSET
- CMP
- CMPS
- CMPSUB
- CMPSX
- CMPX
- CNT
- COGID
- COGINIT
- COGSTOP
- Conditions ( IF_x )
- CTRA, CTRB
- DIRA, DIRB
- DJNZ
- Effects ( WC, WZ, WR, NR )
- FIT
- FRQA, FRQB
- HUBOP
- IF_x (Conditions)
- INA, INB
- JMP
- JMPRET
- LOCKCLR
- LOCKNEW
- LOCKRET
- LOCKSET
- MAX
- MAXS
- MIN
- MINS
- MOV
- MOVD
- MOVI
- MOVS
- MUXC
- MUXNC
- MUXNZ
- MUXZ
- NEG
- NEGC
- NEGNC
- NEGNZ
- NEGZ
- NOP
- NR
- Operators
- OR
- ORG
- OUTA, OUTB
- PAR
- PHSA, PHSB
- RCL
- RCR
- RDBYTE
- RDLONG
- RDWORD
- Registers
- RES
- RET
- REV
- ROL
- ROR
- SAR
- SHL
- SHR
- SUB
- SUBABS
- SUBS
- SUBSX
- SUBX
- SUMC
- SUMNC
- SUMZ
- Symbols
- TEST
- TESTN
- TJNZ
- TJZ
- VCFG
- VSCL
- WAITCNT
- WAITPEQ
- WAITPNE
- WAITVID
- WC
- WR
- WRBYTE
- WRLONG
- WRWORD
- WZ
- XOR
- Appendix A: Reserved Word List
- Appendix B: Math Samples and Function Tables
- Index
2: Spin Language Reference – COGSTOP
COGSTOP
Command: Stop cog by its ID.
((PUB ┆ PRI))
COGSTOP (CogID )
• CogID is the ID (0 – 7) of the cog to stop.
Explanation
COGSTOP stops a cog whose ID is CogID and places that cog into a dormant state. In the
dormant state, the cog ceases to receive System Clock pulses so that power consumption is
greatly reduced.
To stop a cog, issue the COGSTOP command with the ID of the cog to stop. For example:
VAR
byte Cog 'Used to store ID of newly started cog
PUB Start(Pos) : Pass
'Start a new cog to run Update with Pos,
'return TRUE if successful
Pass := (Cog := cognew(@Update, Pos) + 1) > 0
PUB Stop
'Stop the cog we started earlier, if any.
if Cog
cogstop(Cog~ - 1)
This example, from the COGNEW description, uses COGSTOP in the public Stop method to stop
the cog that was previously started by the
Start method. See COGNEW, page 78, for more
information about this example.
Propeller Manual v1.1 · Page 83