AVR Notes
From Laen
Contents |
I/O
Setting a pin to "output"
DDRB |= _BV(PB3);
(Where "B" is the port number, and PB3 matches pin "PB3" on your datasheet.
Setting a pin high
PORTB &= ~_BV(PB3)
Setting a pin low
PORTB|=_BV(PB3)
Programming
The protocol for High Voltage Serial Programming is different from the normal SPI programming. You can't just hook 12V to RESET and hope it works.
