Pepper-computer Modular Computers RS485 Manual do Utilizador descarregar pdf (Página 274)

100

101

SMART I/O User’s Manual

October 01, 1996

Page 5 - 118

Chapter 5 Analog Modules

5.5.8.6 SMDAC1PutVRaw

Syntax

error_code SMDAC1PutVRaw(u_int8 PortNr, u_int8

Channel, u_int16 Value);

Description

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.

Input

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

Output

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).

Example

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

Value (16-bit HEX)

Unipolar Bipolar

Positive Full-Scale $0FFF Positive Full-Scale $0FFF

+1LSB $0001 +1LSB $0801

0 $0000 0 $0800

-1LSB $07FF

Negative Full-Scale $0000

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