Question $1\_$ Binary count $(4$ bit binary count$)$ should happen on four right most LEDs when push button

SW$2$ is pressed down.In this count LDO should represent the least sginificant bit and LD the most

significant bit. The counting should be switched to four right most LEDs when the push button SW$5$ is

pressed and kept down. In this count LD$4$ should represent the least sginificant bit and LD$7$ the most

significant bit. Binary count should stop when push button is released.

Test the code on Dragon $12$ plus board. Make sure the code is present in the project directory with name

as explained.

Condition: should not use the led$\_$enable$)$ functionQuestion $3\_$

a$.$ key$\_$scan$()$

b$.$ get$\_$key$\_$midterm$()$

c$.$ wait$\_$for$\_$keyup$()$

Write a complete code to interface hex keypad with MC$9$S$12$D$256$B on Dragon board

While developing the algorithm and related code, please adher to the following:

Use functions named as above in the main$)$ function $($Baisc strcuture of the main$()$ function also given

below$).$

In the main function, enable Seven segment display without using the function seg$7\_$enable$)-$

Make sure to use the same function name as given.

Your code when executed should perform as follow: Any key press on hex key pad should be displayed

on lcd screen. At the same time the right most seven segment display $($DIGO$)$ should display a

hexnumber which is one less than the keypress.

However, If the keypress $=0,$ DIGO should display $0$ only. $(3$ Points