Pepper Computer RS232, RS485 user manual SMDIN1Get Syntax

Chapter 4 Digital Modules SMART I/O User’s Manual

4.1.8.4 SMDIN1Get

Syntax

error_code SMDIN1Get(u_int8 PortNr, u_int8 *buffer);

Description

This function fetches the status of ALL 8 input lines of the port PortNr and writes it to the address pointed to by buffer with bit 0 of the buffer represent- ing input 0 of the module.

Input

u_int8 PortNr u_int8 *buffer

Output

error_code

Example

SM-Port number to fetch data Pointer to Buffer where data is to be stored

SUCCESS

or OS-9 error code (refer to the OS-9 Technical Manual Error Codes Section).

4

RetVal = SMDIN1Get(0, buffer);

Buffer Explanation:

D7 D0

Ch.7 Ch.6 Ch.5 Ch.4 Ch.3 Ch.2 Ch.1 Ch.0

Bit Value : 0 = No input or not connected 1 = Input Active

March 12, 1996 ©1996 PEP Modular Computers GmbH Page 4 - 15