Pepper Computer Modular Computers RS232 User Manual

SMART I/O User’s Manual

October 01, 1996

©1996 PEP Modular Computers GmbH

Page 5 - 96

Chapter 5  Analog Modules

error_code SMADC1GetVRaw(u_int8 PortNr, u_int8

    Channel, int16 *pValue);

This function fetches the  conversion result of a selected channel without

performing a gain or offset correction. The result is always a signed integer

value.

u_int8 PortNr

SM-Port to be accessed

u_int8 Channel

Number of the ADC input channel to access

(0-3)

int16 *pValue

Pointer to the location where the conversion

result will be stored

error_code

SUCCESS

E_SEEK

if module was not initialised

E-BMODE

if the module is unknown

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

Technical Manual Error Codes Section).

RetVal = SMADC1GetVRaw(0, 2, 0x07FF);

Positive Full-Scale

$0FFF

Positive Full-Scale

$07FF

+1LSB

$0001

+1LSB

$0001

0

$0000

-1LSB

$FFFF

  

Negative 

Full-Scale

$F800