Started following some tutorial on att85 usi. Downloaded example code from make avr book.

Make AVR Examples/Chapter02_Programming-AVRs/blinkLED_AVR_style/blinkLED_AVRStyle.c

@@ -0,0 +1,32 @@
+                                                    /* Blinker Demo II */
+
+#include <avr/io.h>
+#include <util/delay.h>
+
+#define LED      PB0
+#define LED_DDR  DDRB
+#define LED_PORT PORTB
+
+#define DELAYTIME 200
+
+#define setBit(sfr, bit)     (_SFR_BYTE(sfr) |= (1 << bit))
+#define clearBit(sfr, bit)   (_SFR_BYTE(sfr) &= ~(1 << bit))
+#define toggleBit(sfr, bit)  (_SFR_BYTE(sfr) ^= (1 << bit))
+
+int main(void) {
+
+  // Init
+  setBit(LED_DDR, LED);                      /* set LED pin for output */
+
+  // Mainloop
+  while (1) {
+
+    setBit(LED_PORT, LED);
+    _delay_ms(DELAYTIME);
+
+    clearBit(LED_PORT, LED);
+    _delay_ms(DELAYTIME);
+
+  }
+  return 0;                                          /* end mainloop */
+}