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Spend some time learning C programming, then download a compiler and go from there. You can practice your C skills by using 'gcc'.
Once you've learnt how to program in C, you'll be able to control pins and read inputs very easily on the ATmega series.
Here is an example:
Code:
#include <iom169.h> /* replace with the correct header file */
#include <intrinsics.h>
#include <avr_macros.h>
#include <stdio.h>
// bits
#define BIT0 0x01
#define BIT1 0x02
#define BIT2 0x04
#define BIT3 0x08
#define BIT4 0x10
#define BIT5 0x20
#define BIT6 0x40
#define BIT7 0x80
// port D stuff
#define LED BIT6
#define BUTTON BIT7
// inputs
#define SWITCH_ON (PIND & BUTTON) == 0
#define SWITCH_OFF (PIND & BUTTON) != 0
// outputs
#define LED_ON PORTD |= LED
#define LED_OFF PORTD &= ~LED
int
main(void)
{
DDRD=BIT6; // Set pin 6 as output, all others as inputs
while(1)
{
if (SWITCH_ON)
LED_ON;
else
LED_OFF;
}
return(0); // this line will never execute
}
Saved you a whole load of time looking for atmega tutorials.. you just need to learn C.
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