Pepper-computer Modular Computers RS485 User Manual download pdf (Page 237)

SMART I/O User’s Manual

Chapter 5 Analog Modules

5.3.8.15 SMADCEnableConversion

Syntax

error_code SMADCEnableConversion(u_int8 PortNr, u_int8

channel, BOOLEAN enable);

Description

This function checks if an SM-THERM board is fitted on the specified port

and if the channel is valid and forces the HW task to convert the raw values.

If the flag enable is TRUE (<>0), then conversion of raw values to degrees

Celsius is executed, else if (enable=FALSE) no conversion takes place. The

function invalidates converted data, if enable is set to FALSE.

Input

u_int8 PortNr

Port number to enable data conversion

(from 0 to 10)

u_int8 channel

Number of specified channel (0 to 3)

BOOLEAN enable

Flag for enabling or disabling conversion of

raw values

Output

error_code SUCCESS

E_MNF

If wrong type of module or no module

is fitted on the selected port

E_PARAM

If wrong channel number is specified

E_BMODE

If conversion can’t be enabled because

a bad or no sensor type is specified

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

Technical Manual Error Codes Section).

Example

RetVal = SMADCEnableConversion(0, 1, FALSE);

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Pepper-computer Modular Computers RS485 User Manual Page 237