Create an Arduino program that manages a washing machine where...

a$.$ There is a Fill $$ Controlled by an RC circuit.

b$.$ There is a Wash $$ Controlled by an RC circuit.

c$.$ There is a Spin$/$rinse $$ Controlled by an RC circuit.

d$.$ Then are Empty timers between Wash and Spin$/$rinse $-$ Controlled by an RC

circuit.

There should be a START that starts the process.

There should not be a pause if the door lid is open.

There should be an indicator light for each step in the wash cycle.

When the final spin is done a DONE$\_$BUZZER should sound, and a light should flash.

Use an Arduino timer using a timer interrupt to

There needs to be a RESET, which can reset the wash cycle.

When the Fill cycle is active, or the Rinse is active then a FILL$\_$VALVE is energized to

allow water into the washing machine. The FILL$\_$VALVE should only allow water to flow

for $5$ seconds.

You need to use an i$2$C LCD display to state in English what state the washing machine

is in$.$

The DONE$\_$BUZZER cannot activate while the EMPTY$\_$VALVE is energized.

The LCD will not print fill,wash, rinse,or done using this program. that was sent to me$.$

$//$ C$++$ code

$//$

#include

int seconds $=0$;

float fillValve $=0\mathrm{.}0$;

Adafruit$\_$LiquidCrystal lcd$\_1(0)$;

$//$ Pin assignments

const int START$\_$BUTTON $=2$;

const int RESET$\_$BUTTON $=3$;

const int FILL$\_$VALVE $=4$;

const int EMPTY$\_$VALVE $=5$;

const int DONE$\_$BUZZER $=6$;

const int FILL$\_$LIGHT $=7$;

const int WASH$\_$LIGHT $=8$;

const int SPIN$\_$LIGHT $=9$;

const int DONE$\_$LIGHT $=10$;

$//$ State variables

enum MachineState $\{$

IDLE,

FILLING,

WASHING,

RINSING,

SPINNING,

DONE

$\}$;

MachineState state $=$ IDLE;

$//$ Timers and durations

unsigned long fillStartTime;

unsigned long washStartTime;

unsigned long rinseStartTime;

unsigned long spinStartTime;

const unsigned long fillDuration $=5000$; $//5$ seconds for fill

const unsigned long washDuration $=5000$; $//5$ seconds for wash

const unsigned long rinseDuration $=5000$; $//5$ seconds for rinse

const unsigned long spinDuration $=5000$; $//5$ seconds for spin

$//$ Initialization function

void setup$()\{$

$//$ Pin initialization

pinMode$($START$\_$BUTTON, INPUT$\_$PULLUP$)$;

pinMode$($RESET$\_$BUTTON, INPUT$\_$PULLUP$)$;

pinMode$($FILL$\_$VALVE, OUTPUT$)$;

pinMode$($EMPTY$\_$VALVE, OUTPUT$)$;

pinMode$($DONE$\_$BUZZER, OUTPUT$)$;

pinMode$($FILL$\_$LIGHT, OUTPUT$)$;

pinMode$($WASH$\_$LIGHT, OUTPUT$)$;

pinMode$($SPIN$\_$LIGHT, OUTPUT$)$;

pinMode$($DONE$\_$LIGHT, OUTPUT$)$;

$//$ Initialize I$2$C LCD display

lcd$\_1.$begin$(16,2)$;

lcd$\_1.$setBacklight$(1)$;

lcd$\_1.$clear$()$;

$//$ Initial state of outputs

digitalWrite$($FILL$\_$VALVE, LOW$)$;

digitalWrite$($EMPTY$\_$VALVE, LOW$)$;

digitalWrite$($DONE$\_$BUZZER, LOW$)$;

$\}$

$//$ Loop function

void loop$()\{$

$//$ Handle start button press

if $($digitalRead$($START$\_$BUTTON$)==$ LOW$)\{$

$//$ Start the washing cycle if not already started

if $($state $==$ IDLE$)\{$

state $=$ FILLING;

fillStartTime $=$ millis$()$;

digitalWrite$($FILL$\_$VALVE, HIGH$)$; $//$ Energize fill valve

digitalWrite$($FILL$\_$LIGHT, HIGH$)$; $//$ Turn on fill light

lcd$\_1.$clear$()$;

lcd$\_1.$print$("$Filling$")$;

$\}$

$\}$

$//$ Handle reset button press

if $($digitalRead$($RESET$\_$BUTTON$)==$ LOW$)\{$

$//$ Reset the washing cycle

state $=$ IDLE;

digitalWrite$($FILL$\_$VALVE, LOW$)$;

digitalWrite$($EMPTY$\_$VALVE, LOW$)$;

digitalWrite$($DONE$\_$BUZZER, LOW$)$;

digitalWrite$($FILL$\_$LIGHT, LOW$)$;

digitalWrite$($WASH$\_$LIGHT, LOW$)$;

digitalWrite$($SPIN$\_$LIGHT, LOW$)$;

digitalWrite$($DONE$\_$LIGHT, LOW$)$;

lcd$\_1.$clear$()$;

lcd$\_1.$print$("$Idle$")$;

$\}$

$//$ State machine for washing cycle

switch $($state$)\{$

case FILLING:

$//$ Check fill duration

if $($millis$()-$ fillStartTime $>=$ fillDuration$)\{$

$//$ Move to washing state

state $=$ WASHING;

digitalWrite$($FILL$\_$VALVE, LOW$)$; $//$ Turn off fill valve

digitalWrite$($FILL$\_$LIGHT, LOW$)$; $//$ Turn off fill light

washStartTime $=$ millis$()$;

digitalWrite$($WASH$\_$LIGHT, HIGH$)$; $//$ Turn on wash light

lcd$\_1.$clear$()$;

lcd$\_1.$print$("$Washing$")$;

$\}$

break;

case WASHING:

$//$ Check wash duration

if $($millis$()-$ washStartTime $>=$ washDuration$)\{$

$//$ Move to rinsing state

state $=$ RINSING;

washStartTime $=$ millis$()$;

digitalWrite$($WASH$\_$LIGHT, LOW$)$; $//$ Turn off wash light

digitalWrite$($EMPTY$\_$VALVE, HIGH$)$; $//$ Energize empty valve

lcd$\_1.$clear$()$;

lcd$\_1.$print$("$Rinsing$")$;

$\}$

break;

case RINSING:

$//$ Check rinse duration

if $($millis$()-$ rinseStartTime $>=$ rinseDuration$)\{$

$//$ Move to spinning state