ADLINK ACL-8111 User Manual

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C/C++ Library for DOS • 37

5.4 _8111_DI

@ Description

This function is used to read data from digital input port. There are 16-bit
digital inputs on the ACL-8111. The bit 0 to bit 7 are defined as low byte
and the bit 8 to bit 15 are defined as the high byte.

@ Syntax

int _8111_DI( int port_number, unsigned char *data )

@ Argument:

port_number: To indicate which port is read,

DI_LO_BYTE

DI_HI_BYTE.

DI_LO_BYTE: bit 0 ~ bit 7,

DI_HI_BYTE: bit8 ~ bit15

data:

return value from digital port.

@ Return Code:

ERR_NoError
ERR_BoardNoInit
ERR_PortError

@ Example:

See Demo program . Demo Program 'DI_DEMO.C'