TASK$$

Your task is to write code which handles a sequence of input characters

from the UART interface, and responds with the output specified below.

On receipt of the character sequence:

"foo" your program should print $\text{'}0\text{'}.$

"bar" your program should print $\text{'}1\text{'}.$

"foobar" your program should not print either $\text{'}0\text{'}$ or $\text{'}1\text{'}$ as specified

above, but should instead print a linefeed $\text{'}\frac{\frac{?}{?}}{?}\text{'}$ character.

NOTE :

It is strongly recommended that you design a state machine to complete

this task.

Your solution should use a baud rate of $9600,$ and $8N1$ frame format. Your

solution MUST NOT use qutyio.o or qutyserial.o$.$

EXAMPLES:

INPUT: $..$ foo. bar.foo.barfoobarfood

OUTPUT: $\frac{0101}{\frac{?}{?}}$

START$)0101$

$0($END$)$

INPUT: barsfoosbarforbarfoobarrforfoobarfoobarfood

OUTPUT: $\frac{1011}{?}\frac{?}{?}\frac{?}{?}$

$0$

START