Pepper Computer Modular Computers RS232 User Manual

SMART I/O User’s Manual

October 01, 1996

©1996 PEP Modular Computers GmbH

Page 5 - 118

Chapter 5  Analog Modules

error_code SMDAC1PutVRaw(u_int8 PortNr, u_int8

    Channel, u_int16 Value);

This function sets the selected DAC channel to the chosen value. No gain or

offset correction is performed and the given value will always be masked to a

12-bit value.

u_int8 PortNr

SM-Port number to be accessed

u_int8 Channel

Number of the DAC output channel to access

(0-5)

u_int16 Value

Value to be written

error_code

SUCCESS

E_SEEK

if module was not initialized

E-BMODE

if the module is unknown

or standard OS-9 error code (refer to the OS-9

Technical Manual Error Codes Section).

RetVal = SMDAC1PutVRaw(0, 1, 0x0FFF);

Positive Full-Scale

$0FFF

Positive Full-Scale

$0FFF

+1LSB

$0001

+1LSB

$0801

0

$0000

0

$0800

  

-1LSB

$07FF

Negative Full-Scale

$0000