Instruction manual

AMPDIO DRIVERS

Page 176

pdata pointer to long: pointer to a long integer

variable into which the digital data word will be

placed.

Returns short: OK

or ERRHANDLE

ERRCHAN

ERRDATA

Prior Calls registerBoardEx

DIOsetMode

DIOsetChanWidth

See Also DIOsetData

6.4.11.7 Configure a Digital I/O Port Mode — DIOsetModeEx

Writes directly to the digital I/O port control register. The value written may be a mode-setting

command (bit 7 = 1) or a single bit set/reset command (bit 7 = 0).

SUPPORTED IN VERSION 2.00 ONWARDS.

Note that writing a mode-setting command (bit 7 = 1) causes all output ports on the chip to be

set to logic level 0 (except for certain PORT C bits in modes 1 and 2). This is a feature of the

82C55 chip.

i = DIOsetModeEx (h, chip, ctrl)

where h short: board handle as issued by the

registerBoardEx function.

chip short: address offset of the DIO chip. One of

the following pre-defined constants may be

used:

PPIX = 0

PPIY = 8

PPIZ = 16

ctrl short: value to write to PPI control port.

Returns short: OK

or ERRHANDLE

ERRCHAN

Prior Calls registerBoardEx