[avrdude-dev] [bug #45095] Atmega328p fuses are not according datasheet

[lja]

URL:
  <http://savannah.nongnu.org/bugs/?45095>

                 Summary: Atmega328p fuses are not according datasheet
                 Project: AVR Downloader/UploaDEr
            Submitted by: lja
            Submitted on: Qua 13 Mai 2015 09:43:21 GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: lja
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

This has nothing to do with the bug where the print was swapping hfuse and
efuse.

It looks that avrdude is swapping the extended fuse with the low fuse.

Dumping m328p fuses I get:

avrdude.exe: Device signature = 0x1e950f
avrdude.exe: safemode: lfuse reads as FF
avrdude.exe: safemode: hfuse reads as D1
avrdude.exe: safemode: efuse reads as 5


But in reality the 0xff is the efuse and 0x05 is the lfuse.

This can be confirmed in page 283 of the datasheet:
http://www.atmel.com/images/Atmel-8271-8-bit-AVR-Microcontroller-ATmega48A-48PA-88A-88PA-168A-168PA-328-328P_datasheet_Complete.pdf

It seems weird that nobody else noticed this... unless I'm missing something
here!




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