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

Make AVR Examples/Chapter18_Using-Flash-Program-Memory/progmemDemo2/progmemDemo2.c

@@ -0,0 +1,37 @@
+                             /* Second steps into using program memory */
+                                  /* Storing the addresses in pointers */
+
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/pgmspace.h>
+#include "USART.h"
+
+const char myVeryLongString[] PROGMEM = "\r\nHi there, \
+this is an example of a long string.\r\n\
+The kind that you wouldn't want to store in RAM.\r\n";
+const uint16_t sixteenBits PROGMEM = 12345;
+
+int main(void) {
+  initUSART();
+
+  const char *stringPointer;
+  const uint16_t *wordPointer;
+  uint8_t i;
+  char oneLetter;
+
+  stringPointer = &myVeryLongString[0];       /* address of first char */
+  // stringPointer = myVeryLongString;                /* same as above */
+  wordPointer = &sixteenBits;                 /* address of first byte */
+
+  while (1) {
+    for (i = 0; i < sizeof(myVeryLongString); i++) {
+      oneLetter = pgm_read_byte(stringPointer + i);
+      transmitByte(oneLetter);
+      _delay_ms(100);     /* slow it down to simulate typing effect :) */
+    }
+    _delay_ms(1000);
+
+    printWord(pgm_read_word(wordPointer));
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}