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char ch;
 if (UCSRA & 0x80)
          {
          ch = UDR;  

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        Dim number As Int16
        Dim out As String
        number = TrackBar1.Value
        out = Chr(number)

        SerialPort1.Write(out)

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#include <avr/io.h>
#include <util/delay.h>
#include <stdio.h>
#include <avr/iom16.h>
#include <inttypes.h>

void USARTInit(uint16_t ubrr_value)
{

   //Set Baud rate

UBRRH=0x00;
UBRRL=0x33;

   /*Set Frame Format


   >> Asynchronous mode
   >> No Parity
   >> 1 StopBit

   >> char size 8

   */

   UCSRC=(1<<URSEL)|(3<<UCSZ0);


   //Enable The receiver and transmitter

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


}

void InitPWM()
{
   /*
   TCCR0 - Timer Counter Control Register (TIMER0)
   -----------------------------------------------
   BITS DESCRIPTION
   

   NO:   NAME   DESCRIPTION
   --------------------------
   BIT 7 : FOC0   Force Output Compare [Not used in this example]
   BIT 6 : WGM00  Wave form generartion mode [SET to 1]
   BIT 5 : COM01  Compare Output Mode        [SET to 1]
   BIT 4 : COM00  Compare Output Mode        [SET to 0]

   BIT 3 : WGM01  Wave form generation mode [SET to 1]
   BIT 2 : CS02   Clock Select               [SET to 0]
   BIT 1 : CS01   Clock Select               [SET to 0]
   BIT 0 : CS00   Clock Select               [SET to 1]

   The above settings are for
   --------------------------

   Timer Clock = CPU Clock (No Prescalling)
   Mode        = Fast PWM
   PWM Output  = Non Inverted

   */


   TCCR0|=(1<<WGM00)|(1<<WGM01)|(1<<COM01)|(1<<CS00);

   //Set OC0 PIN as output. It is  PB3 on ATmega16 ATmega32

   DDRB|=(1<<PB3);

}



/* TYP SetPWMOutput(40) 0-255*/

void SetPWMOutput(uint8_t duty)
{
   OCR0=duty;
}


void Wait()
{
 _delay_loop_2(10000);
}

char USARTReadChar()
{
	
	
   //Wait untill a data is available

   while(!(UCSRA & (1<<RXC)))
   {
      //Do nothing
   }

   return UDR;

}

void main() {
char data;




USARTInit(51);

InitPWM();


  	uint8_t speed=254;

    while(1)
   {
   
		  USARTReadChar();

			data=UDR;
			
			SetPWMOutput(data);	

		_delay_ms(100);
      }

   }

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data = USARTReadChar();