Instruction manual
Table Of Contents
- INTRODUCTION
- GETTING STARTED
- MAKING THE CONNECTIONS
- USING THE PC215E
- STRUCTURE AND ASSIGNMENTS OF THE REGISTERS
- Register Assignments
- Register Groups
- The Register Details
- Programmable Peripheral Interface PPI-X Data Register Port A
- Programmable Peripheral Interface PPI-X Data Register Port B
- Programmable Peripheral Interface PPI-X Data Register Port C
- Programmable Peripheral Interface PPI-X Command Register
- Programmable Peripheral Interface PPI-Y Data Register Port A
- Programmable Peripheral Interface PPI-Y Data Register Port B
- Programmable Peripheral Interface PPI-Y Data Register Port C
- Programmable Peripheral Interface PPI-Y Command Register
- Z1 Counter 0 Data Register
- Z1 Counter 1 Data Register
- Z1 Counter 2 Data Register
- Counter/Timer Z1 Control Register
- Z1 Counter/Timer Status Register
- Z2 Counter 0 Data Register
- Z2 Counter 1 Data Register
- Z2 Counter 2 Data Register
- Counter/Timer Z2 Control Register
- Z2 Counter/Timer Status Register
- Group Z Clock Connection Register
- Group Z Gate Connection Register
- Interrupt Source Selection Register
- Interrupt Status Register
- PROGRAMMING THE PC215E
- Copyright
- Files installed from the Distribution Diskette
- Windows DLL and Examples
- DOS 'C' Library and Examples
- Using the Dynamic Link Library
- Windows and DOS Library Functions
- Initialisation Functions
- Interrupt Control Functions
- Data Buffer Functions
- Timer/Counter Functions
- Differential Counter Functions
- Frequency Generation Functions
- Millisecond Stopwatch Functions
- Frequency Input and Output Functions
- Digitally- and Voltage-Controlled Oscillator Functions
- Digital Input/Output Functions
- Switch Scanner Matrix Functions
- Bi-Directional Data Bus Functions
- PC215E Library Error Codes
- PC215E Interface Guide For LABTECH NOTEBOOK
- Guide to User Programming
- Signal Centre
- CONTENTS
- DECLARATION OF CONFORMITY
Page
107
PC215E
6.6.12.2 Free-up Bi-Directional Data Bus Digital I/O Chip - DIOfreeBiDirectionalBus
Frees up the DIO chip used by the given Bi-Directional bus handle.
i = DIOfreeBiDirectionalBus (h, hI)
where
h Integer. Board handle as issued by function
registerBoard.
hI Integer. Bi directional bus handle as issued by
function DIOsetBiDirectionalBus.
Returns Integer:
OK
or ERRHANDLE
ERRCHAN
Prior Calls registerBoard
DIOsetBiDirectionalBus
disableInterrupts
See Also
6.7 PC215E Library Error Codes
Mnemonic Returned
Value
Meaning
OK 0 Operation successful.
ERRSUPPORT -1 Operation not supported by board, or the maximum
boards/buffers are already registered.
ERRBASE -2 Base address is invalid or in use.
ERRIRQ -3 Interrupt level is invalid or in use.
ERRHANDLE -4 Invalid board handle, or board not registered.
ERRCHAN -5 Invalid channel number
ERRDATA -6 Invalid data
ERRRANGE -7 Out of range
ERRMEMORY -8 Insufficient Memory
ERRBUFFER -9 Invalid buffer handle - not allocated
ERRPC226 -10 PC226 board not found (for VCO function)