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Software Development

FLEX System Software

FLEX Alphanumeric Chip MC68175 Interface

3-3

3.1 FLEX SYSTEM SOFTWARE

FLEX System Software (FSS) from Motorola is a family of interoperable software

components used for building products with paging/messaging capabilities. FLEX

One-Way Stack, one of the software components, is specifically designed to support the

integration of the FLEX Alphanumeric Chip Integrated Circuit (IC) with many

off-the-shelf microprocessors.

3.1.1 FLEX One-Way Stack Overview

The product engineer can regard FLEX One-Way Stack as the FLEX Alphanumeric Chip

device driver. As shown in

Figure 3-1

, FLEX One-Way Stack runs on the product’s host

processor and communicates with FLEX Alphanumeric Chip IC. It fully interprets FLEX

code-words (packets of information) received from the FLEX IC and returns the original

paging message to the host software so the message can be displayed to the user.

Figure 3-1

FLEX One-Way Stack Software Interfaces

A FLEX Software Development Kit (SDK) is available for downloading from Motorola’s

website at

http://www.motorola.com/flexstack.

The FLEX One-Way Stack

software has been proven to work on various microprocessors, including the MC68328

(Dragonball). Motorola customers can download FLEX One-Way Stack software from

the web and apply the recommended porting procedures described in this application

report to make the software work on the MC68328 Dragonball platform.

Application (host) Software

Public API

Interrupt Service Routine

Serial Peripheral Interface

FLEX Alphanumeric Chip

Data Packets

Formatted

(or Unformatted)

Message

FLEX One-Way Stack Software

AA1421

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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