DAQ PCI-FRM01 Manual do Utilizador descarregar pdf (Página 12)

Application Note (AN312)

eCARD-FRM11 board API Programming

http://www.daqsystem.com

Overview

Digital Input Output APIs

unsigned char DIO_Read (void)

BOOL DIO_Write (unsigned char val)

DIO_Read

Reads from input port

unsigned char DIO_Read (void)

Parameters:

None

Return Value:

If the function succeeds, it returns the port value.

If the function fail, it returns the -1(0xff).

DIO_Write

Writes to output port

BOOL DIO_Write (unsigned char val)

Parameters:

val :

The value to be written to the port.

Return Value:

If the function succeeds, it returns TRUE.

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DAQ PCI-FRM01 Manual do Utilizador Página 12