URL:
<https://savannah.nongnu.org/bugs/?61169>
Summary: Bad EEPROM read on mega2560 R3 Arduino board
Project: AVR Downloader/UploaDEr
Submitted by: None
Submitted on: Thu 16 Sep 2021 02:53:37 PM UTC
Category: None
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Originator Name: Shane
Originator Email: [email protected]
Open/Closed: Open
Release: 6.3
Discussion Lock: Any
Programmer hardware: wiring/COM
Device type:
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Details:
I have a mega2560 R3 arduino board. I created a simple sketch from the Arduino
IDE from file->Examples->EEPROM->eeprom_clear and then modified it to write
0x00112233445566778899aabbccddeeff repeating to the eeprom memory. After
writing out these values and then using avrdude to read them back I get
0x00112233445566770011223344556677 instead. I have a custom programmer that
read back the expected values correctly.
The avrdude command I am using for reading out the eeprom is:
avrdude -p atmega2560 -c wiring -P COM4 -b115200 -U eeprom:r:dump.bin
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