AVR Freaks

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        MsgBox("hi how are u")
        SerialPort1.Open()



    End Sub

    Private Sub Form1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseClick
        MsgBox("u clicked")

    End Sub

  

    Private Sub switchon_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles switchon.Click
        SerialPort1.Write(Chr(97))




    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        SerialPort1.Write(Chr(100))

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        SerialPort1.Close()


    End Sub
End Class

#include  
#include  
#include 

#define USART_BAUDRATE 38400 
#define BAUD_PRESCALE (((F_CPU / (USART_BAUDRATE * 16UL))) - 1) 

int f=0;

void portinitialize();
void uartinitialize();
void handleleft();
void handleright();
void bytedecision(char);


void portinitialize()
 {
  DDRD|=(1<<4);
  TCCR1B|=(1<<CS12);
  }

void uartinitialize()
 {
   UCSRB |= (1 << RXEN) | (1 << TXEN);   // Turn on the transmission and reception circuitry 
   UCSRC |= (1 << URSEL) | (1 << UCSZ0) | (1 << UCSZ1); // Use 8-bit character sizes 

   UBRRL = BAUD_PRESCALE; // Load lower 8-bits of the baud rate value into the low byte of the UBRR register 
   UBRRH = (BAUD_PRESCALE >> 8); // Load upper 8-bits of the baud rate value into the high byte of the UBRR register 

   UCSRB |= (1 << RXCIE); // Enable the USART Recieve Complete interrupt (USART_RXC) 
   sei(); // Enable the Global Interrupt Enable flag so that interrupts can be processed 
 }
void handleleft()
 {
  int m=0;
  PORTD&=~(1<<4);
  
  for(m=0;m<=100;m++)
  _delay_ms(10);
 }

void handleright()
 {
  int m=0;
  PORTD|=(1<<4);

  for(m=0;m<=100;m++)
  _delay_ms(10);
  }

void bytedecision(char a)
 { 
  if(a=='a' || a=='A')
   {
    handleleft();
    }
  if(a=='d' || a=='D')
   {
    handleright();
   }
 }

int main (void) 
{ 
   portinitialize();
   uartinitialize();
   
   for(;;) // Loop forever 
   { 
     if(f==0)
	   
	    
     {
  
    if(TCNT1>=31250)
	 
	 {
	  PORTD^=(1<<4);  // run test program blinking- echoing is handled by the ISR instead of in the main loop 
	  TCNT1=0;
	 }
	 }
 }
       
      
} 

ISR(USART_RXC_vect) 
{ 
   f=1;
   char ReceivedByte; 
   ReceivedByte = UDR; // Fetch the recieved byte value into the variable "ByteReceived" 
   //UDR = ReceivedByte; // Echo back the received byte back to the computer 
   bytedecision(ReceivedByte);
}