Educational Objective:

The educational objective of this laboratory assignment is to gain experience programming the I$/$O pins on the TI MSP$430$ microcontroller. The objective will be met by writing code that emulates the operation of a multi$-$function flashlight.

The multi$-$function flashlight works as follows:

$-$ The first time the power button is pushed, the LEDs turn on yellow

$-$ The second time the power button is pushed, the LEDs turn on red

$-$ The third time the power button is pushed, the LEDs flash green

$-$ The fourth time the power button is pushed, the LEDs turn off $*$note that in a real flashlight the LEDs would be white, but we are using the expansion board that came in your kit

Background:

On the expansion board there are three clear LEDs that are able to display red, green or yellow. We will use these LEDs for this lab. The two LEDs that are parallel to the bottom of the board are referred to as main. They are tied together, and thus, controlled by the same pins. The other LED is referred to as side. The pinout for the

There are two pushbuttons on the board and we will be using the one on the top of the board, labeled 'car'. This pushbutton is connected to pin P$2\mathrm{.}1.$ The pushbutton is active low, meaning it drives a $1$ in the resting state and a $0$ when it is pushed.

Pre$-$Laboratory:

$1.$ Read and follow the prelab instructions very carefully.

$2.$ Review lectures $18,19$ and $20$ posted in MyCourses.

$3.$ Open a new project in Code Composer Studio

$4.$ Write the code for the Multi$-$Function Flashlight described above. You can use the outline $($lab$9.$c$)$ posted in Mycourses as a guide if you would like.

$5.$ Pay close attention to lecture $20$ for reading the input pushbutton

$6.$ The code must be written using bit masking $```$

$`//**************************************************************//$

$|//$ CPET$133$ Lab$9-$ MultiFunction Flashlight

$//$

$//$ Jeanne Christman

$//$ original version $11/15/2024$

$//$

$//$ this program functions as a multi$-$function flashlight

$//-$on the first button push the LEDs turn on yellow

$//-$on the second button push the LEDs turn on red

$//-$on the third button push the LEDs flash on and off $($green$)$

$//-$on the fourth button push the LEDs turn off

$//$This program uses the ECTET breakout board with the TI MSP$430$ LaunchPad

$//$

$//$The LEDs used are the three multi$-$colored ones and the pushbutton used

$//$pushbutton used is the one labelled 'CAR'

$//*****************************************************************//$

$`$#include $//$for the MSP$430$ microcontroller

$|$#include $//$for integer types

##include $//$for boolean types

$`$void main$()$

$\{$

uint$8\_$t ButtonCount $=0$; $//$ declare variable to track button pushes

volatile uint$16\_$t i; $//$ iteration counter for delay loop

WDTCTL $=$ WDTPW $|$ wDTHOLD; $//$ stop watchdog timer

PHSCTLO &$=$ ~LOCKLPM$5$; $//$ always include these two lines

$//$Configure the port pins as inputs and outputs $($use bitmasking$)$

$//$turn all of the LEDs off $($use bitmasking$)$

while$(1)\{//$run code in an endless loop

if $()\{//$check if button is pushed $(0)$ and do the following $-$ see lecture $20$

; $//$increment count on each push

if $()\{//$if count $==4,$ set it back to $0$ and turn off all LEDs

;

$\}$

while $()\{\}//$wait here until button is released $-$ see lecture $20$

$\}$

$//$turn on different lights based on button count

if $()\{//$turn on yellow LEDs if count $==1$

;

$\}$

else if $()\{//$turn off yellow LEDs, turn on red LEDs if count $==2$

;

$\}$

else if $()\{//$turn off red LEDs, toggle green LEDs if count $==3$

; ;

;

; $//$empty for loop for delay

$\}$

$\}$

return;

$```$ Educational Objective:

The educational objective of this laboratory assignment is to gain experience programming the I$/$O pins on the TI MSP$430$ microcontroller. The objective will be met by writing code that emulates the operation of a multi$-$function flashlight.

The multi$-$function flashlight works as follows:

$-$ The first time the power button is pushed, the LEDs turn on yellow

$-$ The second time the power button is pushed, the LEDs turn on red

$-$ The third time the power button is pushed, the LEDs flash green

$-$ The fourth time the power button is pushed, the LEDs turn off $*$note that in a real flashlight the LEDs would be white, but we are using the expansion board that came in your kit

Background:

On the expansion board there are three clear LEDs that are able to display red, green or yellow. We will use these LEDs for this lab. The two LEDs that are parallel to the bottom of the board are referred to as main. They are tied together, and thus, controlled by the same pins. The other LED is referred to as side. The pinout for the

There are two pushbuttons on the board and we will be using the one on the top of the board, labeled 'car'. This pushbutton is connected to pin P$2\mathrm{.}1.$ The pushbutton is active low, meaning it drives a $1$ in the resting state and a $0$ when it is pushed.

Pre$-$Laboratory:

$1.$ Read and follow the prelab instructions very carefully.

$2.$ Review lectures $18,19$ and $20$ posted in MyCourses.

$3.$ Open a new project in Code Composer Studio

$4.$ Write the code for the Multi$-$Function Flashlight described above. You can use