Bluetooth_controlled_robot

 Bluetooth_controlled_robot:

Code:

#include <avr/io.h>
#define F_CPU 8000000ul
#include<util/delay.h>

#define forward 0x14
#define backward 0x28
#define left 0x10
#define right 0x04
#define stop 0x00;

#define motor PORTC

char str[3],i=0;

void serialinit()
{
UCSRB=0x18;
UCSRC=0x86;
UBRRL=0x33;
}

void send(char p)
{
UDR=p;
while(!(UCSRA & (1<<UDRE)));
}

void txstring(char *ptr)
{
  while(*ptr)
  {
 send(*ptr);
 ptr++;
  }
}

void rxdata()
{
   while(!(UCSRA & (1<<RXC)));
   char temp=UDR;
   str[i++]=temp;
}

int main(void)
{
DDRC=0xff;
serialinit();
    while(1)
    {
        rxdata();
if(str[i-1]=='1')
{
motor=forward;
txstring("Moving Forward\r\n");
i=0;
}

else if(str[i-1]=='2')
{
motor=left;
txstring("Moving left\r\n");
i=0;
}

else if(str[i-1]=='3')
{
motor=right;
txstring("Moving right\r\n");
i=0;
}

else if(str[i-1]=='4')
{
motor=backward;
txstring("Moving Reverse\r\n");
i=0;
}

else if(str[i-1]=='5')
{
motor=stop;
txstring("Stop\r\n");
i=0;
}
    }
}

Simulation: