Pepper Computer Modular Computers RS232 User Manual

SMART I/O User’s Manual

©1996 PEP Modular Computers GmbH

March 12, 1996

Page 5 - 17

Chapter 5  Analog Modules

error_code SMDAD1Init(u_int8 PortNr);

This function initializes the resources needed to use the SM-DAD1 on port

PortNr, including:

- testing of the SM-Module ID;

- reading the factory-set conversion table held in the EEPROM;

- setting the ADC to bipolar mode and the DAC to unipolar mode;

- fetching the resources.

u_int8 PortNr

SM-Port number to initialize

(from 0 to 10)

error_code

SUCCESS

 or

E_BMODE

if wrong or no module

E_MEMFUL

if no memory resources available

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

Technical Manual Error Codes Section).

RetVal = SMDAD1Init(0);

If the same SM-DAD1 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.