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

Make AVR Examples/Chapter03_Digital-Output/povToy_1up/1up.c

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+/*
+  POV demo by Patrick Roanhouse
+*/
+
+#include <avr/io.h>
+#include <util/delay.h>
+#define DELAYTIME 2                                              /* ms */
+
+uint8_t Star1UP[] = {
+  0b10000100,
+  0b01101100,
+  0b01111110,
+  0b00011111,
+  0b01111110,
+  0b01101100,
+  0b10000100,
+  0b00000000,
+  0b00000000,
+  0b00000000,
+  0b10000010,
+  0b11111111,
+  0b11111111,
+  0b10000000,
+  0b00000000,
+  0b00000000,
+  0b01111111,
+  0b11111111,
+  0b10000000,
+  0b11111111,
+  0b01111111,
+  0b00000000,
+  0b00000000,
+  0b11111111,
+  0b11111111,
+  0b00110011,
+  0b00110011,
+  0b00011110,
+  0b00011110,
+};
+
+
+int main(void) {
+  uint8_t i;
+
+  DDRB = 0xff;                                           /* all output */
+
+  while (1) {                                              /* mainloop */
+    for (i = 0; i < sizeof(Star1UP); i++) {
+           /* sizeof(Star1UP) returns the number of bytes in our array, */
+      PORTB = Star1UP[i];
+      _delay_ms(DELAYTIME);
+    }
+
+    PORTB = 0;                    /* blank for gap between repetitions */
+    _delay_ms(5 * DELAYTIME);
+
+  }                                                    /* end mainloop */
+  return 0;
+}