Cypress Semiconductor CY8C21534 Especificaciones descargar pdf (Pagina 8)

1 Introduction

The goal of this project was to design a system that would retrieve class schedules

over a Wireless Area Local Network (WLAN) and display the schedule on an electronic

picture frame upon a user's requests. At the Leppävaara campus of Metropolia

University of Applied Sciences, the method for delivering the schedules in the

past was to post a paper schedule outside every classroom. This did not allow for

easy schedule changes or last minute notifications. The idea was then proposed to

design an electronic system that could take the place of the paper schedules, with the

ability to be updated via the wireless local area network.

The electronic class schedule system consists of a digital photo frame to show

the schedule, a microcontroller environment used to manipulate picture data, an

embedded WLAN card to retrieve the data, and a server program located on a host

computer to create, store, and send the requested schedules. Several steps must be

accomplished in order to display the schedule on the screen. These can be seen in

figure 1.

Figure 1: Flow Diagram of Basic Operation.

As can be seen in the figure, first a request is made by selecting a button on the user

interface. The Microcontroller Unit (MCU) system sends a file request to the server

program according to selection that was made. The server program will then return the

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Cypress Semiconductor CY8C21534 Especificaciones Pagina 8