In this task you are required to create a two way serial communication between two Arduino microcontrollers. TheEuropean University of Lefke

Computer Engineering Department

COMP$228-$ Digital System Design

Assignment

Due date: $31\mathrm{.}05\mathrm{.}2024$

Student Name & Surname:

Student Number:

Department:

Questions:

Design an $8421$ BCD to Excess$-3$ BCD code converter circuit based on PAL structure. $(3$ Marks$)$

Design a $1024-$bit Read Only Memory with $2564$ addresses based on $3232$ memory arrays. Draw the

circuit as a block diagram.

$(2$ Mark$)$

Answers:

first microcontroller, which should be a slave, should have two sensors$.$ First sensor should be a temperature sensor

and the second should be a light sensor$.$ This microcontroller should accept several commands. The communication

should be done over $8$ bits. The first set of commands is to trigger a read on sensor$.$ A command of $129$ should select

the first sensor where $130$ should select the second sensor$.$ After these commands, for the next $8$ clock signals, the

device should supply the requested value. The second set of commands control which units the device should supply

the temperature in$.$ Command $65$ should select celcius, $66$ should select fahrenheit, $67$ should select raw value scaled

to $8$ bits.

The second microcontroller will be the master device and should have and LCD. You may use built$-$in Liquid$-$

Crystal library to control the LCD. Every second, the master device should read temperature in celcius, fahrenheit

and raw form and should read light sensor value. These values should be displayed on the LCD screen.

Draw your circuit and write your program on this page.