Fixed this code to show the correct persantage of water in solil of $5$V ref voltage

#include

#include

#define F$\_$CPU $8000000$UL

#define BAUD $2400$

#define MYUBRR F$\_$CPU$/16/$BAUD$-1$

void USART$\_$Init$($unsigned int ubrr$)\{$

UBRRH $=($unsigned char$)($ubrr $>>8)$;

UBRRL $=($unsigned char$)$ubrr;

UCSRB $=(1<<$ RXEN$)|(1<<$ TXEN$)$;

UCSRC $=(1<<$ URSEL$)|(1<<$ UCSZ$1)|(1<<$ UCSZ$0)$;

$\}$

void USART$\_$Transmit$($unsigned char data$)\{$

while $(!($UCSRA & $(1<<$ UDRE$)))$;

UDR $=$ data;

$\}$

void ADC$\_$Init$()\{$

ADCSRA $|=(1<<$ ADEN$)|(1<<$ ADPS$2)|(1<<$ ADPS$1)|(1<<$ ADPS$0)$;

$\}$

uint$16\_$t ADC$\_$Read$($uint$8\_$t adc$\_$channel$)\{$

ADMUX $=(1<<$ REFS$0)|$ adc$\_$channel;

ADCSRA $|=(1<<$ ADSC$)$;

while $($ADCSRA & $(1<<$ ADSC$))$;

return ADC;

$\}$

void LED$\_$Init$()\{$

DDRD $|=(1<<$ PD$2)|(1<<$ PD$3)|(1<<$ PD$4)|(1<<$ PD$5)$; $//$ Set PD$2,$ PD$3,$ PD$4,$ PD$5$ as output

$\}$

void LED$\_$Control$($uint$16\_$t moisture$\_$percentage$)\{$

if $($moisture$\_$percentage $<20)\{$

PORTD $=(1<<$ PD$2)$; $//$ LED $1($connected to PD$2)$ ON

$\}$ else if $($moisture$\_$percentage $<40)\{$

PORTD $=(1<<$ PD$3)$; $//$ LED $2($connected to PD$3)$ ON

$\}$ else if $($moisture$\_$percentage $<60)\{$

PORTD $=(1<<$ PD$4)$; $//$ LED $3($connected to PD$4)$ ON

$\}$ else $\{$

PORTD $=(1<<$ PD$5)$; $//$ LED $4($connected to PD$5)$ ON

$\}$

$\}$

int main$($void$)\{$

USART$\_$Init$($MYUBRR$)$;

ADC$\_$Init$()$;

LED$\_$Init$()$;

uint$16\_$t adc$\_$value;

uint$16\_$t moisture$\_$percentage;

while $(1)\{$

adc$\_$value $=$ ADC$\_$Read$(0)$; $//$ Assuming the soil sensor is connected to PC$0$

moisture$\_$percentage $=(($adc$\_$value $*100)/255)$; $//$ Scale to $100\%$ moisture for $5$V input

USART$\_$Transmit$(($moisture$\_$percentage $/100)+\text{'}0\text{'})$;

USART$\_$Transmit$((($moisture$\_$percentage $/10)\%10)+\text{'}0\text{'})$;

USART$\_$Transmit$(($moisture$\_$percentage $\%10)+\text{'}0\text{'})$;

USART$\_$Transmit$(\text{'}\%\text{'})$;

USART$\_$Transmit$(\text{'}$

$\text{'})$;

LED$\_$Control$($moisture$\_$percentage$)$; $//$ Control LEDs based on moisture percentage

$\_$delay$\_$ms$(500)$; $//$ Delay for stability

$\}$

$\}$