Pepper Computer RS232 User Manual

SMART I/O User’s Manual

Chapter 4 Digital Modules

©1996 PEP Modular Computers GmbH

March 12, 1996

Page 4 - 39

If the same SM-REL1 Module is to be accessed from different tasks, the

user must make sure that the actual output status is ensured by using for

example, semaphores within OS-9.

error_code SMREL1Init(u_int8 PortNr);

This function initializes the SM-REL1 Module on port PortNr by setting the

relays to OPEN, relay LED status to OFF and the external Vcc as input.

u_int8 PortNr

SM-Port to initialize

(from 0 to 10)

error_code

SUCCESS

E_BMODE

if the module is unknown

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

Technical Manual Error Codes Section).

RetVal = SMREL1Init(0);