ladyAdaTinyUsbLittleWireBlink.c

/*
  # Arrangement: atmega16a, isp style protoboard programmer with littlewire kit
  # Purpose: to help me remember cli flags and values for the avr toolchain
  
  sudo avr-gcc -Wall blink.c -mmcu=atmega16a -o blink.o
  sudo avr-objcopy -O ihex -R .eeprom blink.o blink.hex
  sudo avrdude -p atmega16 -c usbtiny -U flash:w:blink.hex
*/

#define F_CPU 1000000UL // 1 MHz clock speed
#include <avr/io.h>
#include <util/delay.h>

int main(void) {
  DDRA = 0xFF;       //Makes all port pins output
  while(1) {
    PORTA = 0xFF;    //raises All pins on port
    _delay_ms(100);
    PORTA = 0x00;    //lowers all pins on port
    _delay_ms(900);
  }
}