Smadc1Getv - PEP Modular Computers Modular Computers RS485 User Manual

Chapter 5 Analog Modules

5.4.8.4 SMADC1GetV

Syntax
error_code SMADC1GetV(u_int8 PortNr, u_int8 Channel,
Description
This function fetches the conversion result of a selected channel. A gain and
offset correction is performed and the result stored as a signed integer value.
Input
u_int8 PortNr
u_int8 Channel
int16 *pValue
Output
error_code
Example
RetVal = SMADC1GetV(0, 2, 0x07FF);
Positive Full-Scale
October 01, 1996
int16 *pValue);
SM-Port to be accessed
Number of the ADC input channel to access
(0-3)
Pointer to the location where the conversion
result will be stored
SUCCESS
E_SEEK
E-BMODE
or standard OS-9 error code (refer to the OS-9
Technical Manual Error Codes Section).
Value (16-bit HEX)
Unipolar
$0FFF
+1LSB $0001
0 $0000
©1996 PEP Modular Computers GmbH
SMART I/O User's Manual
if module was not initialised
if the module is unknown
Bipolar
Positive Full-Scale
+1LSB
0
-1LSB
Negative Full-Scale
$07FF
$0001
$0000
$FFFF
$F800
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