Robo India in this presentation presents the Input and Output programming in AVR Micro Controllers namely Atmega 16, Atmega 8, Atmega 328, Atmega 32 etc. As in robotics, automation and embedded system Input and Output programming is essential. This presentation describes how to use input and output ports, resisters of AVR microcontroller. If you have any query please write us, we are found at- website:http://roboindia.com mail: info@roboindia.com

2. • Atmega16 have total of 40 pins
32 I/O pins..
PORT “A” = 8 Pins
PORT “B” = 8 Pins
PORT “C” = 8 Pins
PORT “D” = 8 Pins

3. Port “X”
DDRX PORTX PINX
NOTE:- X is the name of port and it can
be A, B, C or D .

4. • DDRX – For setting the direction i.e. Input
or output.
• PORTX – For setting output value of port.
• PINX – For reading data available in port.
NOTE:- X is the name of port and it can be A,
B, C or D .
Click here to visit -ROBO INDIA

5. DDRX= 0xFF; (O/P-Port)
DDRX= 0x00; (I/P-Port)
or
DDRX = 0b 1 1 1 1 1 1 1 1 ; (O/P-Port)
DDRX = 0b 0 0 0 0 0 0 0 0 ; (I/P-Port)
NOTE:- X is the name of port and it can
be A, B, C or D .
Click here to visit -ROBO INDIA

6. 1. PORTX= 0xF0 ;
PORTX = 0b 1 1 1 1 0 0 0 0 ;
2. PORTX= 0xFF ;
PORTX = 0b 1 1 1 1 1 1 1 1;
3. PORTX= 0x00 ;
PORTX = 0b 0 0 0 0 0 0 0 0;
Click here to visit -ROBO INDIA

7. 1.If
if ( conditions )
{ code to be executed }
2.For loop
for(start ; condition ; step)
{code to be executed}
3.While loop
while( Condition)
{ code to be executed }
Click here to visit -ROBO INDIA

8. bit_is_clear(PINX,0)) //No input
bit_is_set(PINX,0)) //Detecting input
Click here to visit -ROBO INDIA

9. if (bit_is_set(PINX,0)))
{ code to be executed }
if (bit_is_clear(PINX,0)))
{ code to be executed }
Click here to visit -ROBO INDIA

10. while(bit_is_set(PINX,0)))
{ code to be executed }
while(bit_is_clear(PINX,0)))
{ code to be executed }
Click here to visit -ROBO INDIA

11. • #include <avr/io.h>
• #include <util/delay.h>
Click here to visit -ROBO INDIA

12. In case of queries please write us-
info@roboindia.com
www.roboindia.com
Click here to visit -ROBO INDIA