ATTINY85 – flash multiple LEDs
Similar to our previous example when we flashed a single LED, in this case we connect 3 LEDs up to Pin 5, 6 and 7 which are PB0,1 and 2. We will then flash 3 LEDs
Here is the schematic for this example
Schematic
attiny85 three LEDs
Source
Again this was written in Atmel Studio
- #include <avr/io.h>
- #define F_CPU 1000000UL
- #include <util/delay.h>
- int main (void)
- {
- // port B pins 0, 1, 2 as output
- DDRB = (1 << PB2) | (1 << PB1) | (1 << PB0);
-
- unsigned int i = 0;
- while(1)
- {
- PORTB = i & ( (1 << PB2) | (1 << PB1) | (1 << PB0) );
-
- i = (i+1) % 8;
-
- _delay_ms( 500 );
- }
- }
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