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    uint16_t offset;
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    uint16_t offset;
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#endif
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#endif
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    uint16_t data;
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    uint16_t data;
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    eeprom_busy_wait();     // Make sure any current writes to eeprom
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    eeprom_busy_wait();     // Make sure any current writes to eeprom
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    //boot_spm_busy_wait(); // or flash has completed before updating.
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    boot_spm_busy_wait();   // or flash has completed before updating.
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    cli(); // From this point we're on our own
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    cli(); // From this point we're on our own
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#if 0
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#if 0
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    for (offset = 0; offset < ((len | (SPM_PAGESIZE - 1)) + 1); offset += 2) {
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    for (offset = 0; offset < ((len | (SPM_PAGESIZE - 1)) + 1); offset += 2) {
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    len = (len | (SPM_PAGESIZE - 1)) + 3; // Round len up to a whole page + 2
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    len = (len | (SPM_PAGESIZE - 1)) + 3; // Round len up to a whole page + 2
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    while (len -= 2) {
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    while (len -= 2) {
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        wdt_reset();
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        wdt_reset();
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        boot_spm_busy_wait();      // Wait until the memory is erased.
 - 
 
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        data = pgm_read_word(src); // Read source word
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        data = pgm_read_word(src); // Read source word
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        boot_spm_busy_wait();      // Wait until the memory is erased.
 - 
 
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        boot_page_fill_safe(dst, data); // Write word to destination
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        boot_page_fill_safe(dst, data); // Write word to destination
- 
 
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        boot_spm_busy_wait();      // Make sure spm is ready.
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        if ((dst + 2) % SPM_PAGESIZE == 0) { // If we just wrote the last word of a page
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        if (((uint8_t)dst + 2) % SPM_PAGESIZE == 0) { // If we just wrote the last word of a page
- 
 
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            boot_page_erase(dst);
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            boot_spm_busy_wait();      // Wait until the memory is erased.
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            boot_spm_busy_wait(); // Wait until the memory is erased.
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            boot_page_erase(dst);
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            boot_page_write(dst); // Store buffer in flash page.
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            boot_spm_busy_wait();       // Wait until the memory is written.
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            boot_spm_busy_wait(); // Wait until the memory is written.
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            boot_page_write(dst); // Store buffer in flash page.
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            boot_rww_enable();
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        }
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        }
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        src += 2;
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        src += 2;
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        dst += 2;
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        dst += 2;
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    }
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    }