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The hello world of examples this time for an ATTINY85, although this should work with similar chips as well. We will connect the LED to pin 2 (PB3) and simply flash it on and off.
Here is our schematic
Schematic
Code
The code was written in Atmel Studio
[codesyntax lang=”c” lines=”normal”]
#include <avr/io.h> #define F_CPU 1000000UL #include <util/delay.h> // Define the I/O port to be used for the LED. #define LED_PORT PB3 int main(void) { // Set the LED port number as output. DDRB |= (1 << LED_PORT); // Start infinite loop. while (1) { // Set the LED bit to "1" - LED will be "on". PORTB |= (1 << LED_PORT); // The delay function simply does N-number of "empty" loops. _delay_ms(200); // Set the LED bit to "0" - LED will be "off". PORTB &= ~(1 << LED_PORT); _delay_ms(400); } return (0); }
[/codesyntax]
And another way to do the same task
[codesyntax lang=”c” lines=”normal”]
#include <avr/io.h> #define F_CPU 1000000UL #include <util/delay.h> // Define the I/O port to be used for the LED. #define LED_PORT PB3 int main(void) { // Set the LED port number as output. DDRB |= (1 << LED_PORT); // Start infinite loop. while (1) { // Set the LED bit to "1" - LED will be "on". PORTB |= (1 << LED_PORT); // The delay function simply does N-number of "empty" loops. _delay_ms(200); // Set the LED bit to "0" - LED will be "off". PORTB &= ~(1 << LED_PORT); _delay_ms(400); } return (0); }
[/codesyntax]
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