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#include <avr/pgmspace.h>
#include <stdio.h>
/*
You can put data in program memory,
but reading this data allowed only through macro `pgm_read_byte'
*/
prog_char b[500] = {1,2,3,4,5}; /* This 8bit array in program memory. */
prog_int i[10] = {1,2,3,4,5}; /* This 16bit array in program memory. */
prog_long l[] = {1,2,3,4,5}; /* This 32bit array in program memory. */
prog_long_long ll[] = {1,2,3,4,5}; /* This 64bit array in program memory. */
char a[] PROGMEM = "This string in program memory too";
void
foo(void)
{
char *p = PSTR ("This string in program memory");
printf_P (PSTR ("This string in program memory"));
char c = pgm_read_byte (p+5); /* c = 's' */
char aa = pgm_read_byte (&a[10]); /* aa = 'g' */
char bb = pgm_read_byte (&b[3]); /* bb = 4 */
}
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