/*
 * Test ArduinoMEGA with PROGMEM data above 64kB
 * access via pgm_read_byte_far() from pgmspace.h
 */

/********************************************************************
 * Define an additional section, which will be placed after all others
 ********************************************************************/

//--------------------------------------------------------------------
#define FAR_SECTION   __attribute__((__section__(".far_section")))
//--------------------------------------------------------------------

/********************************************************************
 * modify the line below to calculate the flash usage correctly
 * 
 * C:\Programme\Arduino\hardware\arduino\avr\plattform.txt
 * 
 * ## Compute size
 * recipe.size.regex=^(?:\.text|\.data|\.bootloader|\.far_section)\s+([0-9]+).*
 ********************************************************************/

const uint8_t  dummy1[32767] FAR_SECTION = {1, 2, 3, 4};
const uint16_t dummy2[16383] FAR_SECTION = {1, 2, 3, 4};
const uint32_t dummy3[8191]  FAR_SECTION = {1, 2, 3, 4};
const uint8_t  dummy4[32767] FAR_SECTION = {1};
const uint8_t  dummy5[32767] FAR_SECTION = {1};
const uint8_t  dummy6[25000] FAR_SECTION = {1};
const uint8_t  dummy_PGM_A[32767] PROGMEM = {1};
const uint8_t  dummy_PGM_B[31000] PROGMEM = {1};

void setup() {
  // put your setup code here, to run once:

    unsigned long ptr;
    int i;
    uint16_t tmp16;
    uint32_t tmp32;

    // access data using a pointer
    // arrays with indices do NOT work!
    // pointer calculation must take care of data type size   
    ptr = pgm_get_far_address(dummy1);
    for (i=0; i<32767; i++) {
      PORTA = pgm_read_byte_far(ptr++);
    }

    ptr = pgm_get_far_address(dummy2);
    for (i=0; i<16383; i++, ptr += 2) {
      tmp16 = pgm_read_word_far(ptr);
      PORTA = tmp16;
    }

    ptr = pgm_get_far_address(dummy3);
    for (i=0; i<8192; i++, ptr += 4) {
      tmp32 = pgm_read_dword_far(ptr);
      PORTA = tmp32;
    }

    PORTA = pgm_read_byte_far(pgm_get_far_address(dummy4));
    PORTA = pgm_read_byte_far(pgm_get_far_address(dummy5));
    PORTA = pgm_read_byte_far(pgm_get_far_address(dummy6));
    PORTA = pgm_read_byte_far(pgm_get_far_address(dummy_PGM_A));
    PORTA = pgm_read_byte_far(pgm_get_far_address(dummy_PGM_B));
}

void loop() {
  // put your main code here, to run repeatedly:

}