I had a very strange problem - after downloading EEPROM image to my atmega8 it's suddenly stops working - it's looks like it hangs up or something like this. If I download only flash image - it works perfect, except unproper values in EEMEM variables. I'm using avr-gcc as compiler, avrdude for uploading flash and EEPROM images thru arduino bootloader. Any suggestions?
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3Can you clarify what bootloader and protocol you are using? EEPROM write support is a feature that is unsupported by some bootloaders. Sending EEPROM write commands may lead to at best errors and at worse the bootloader doing _bad things_. – Gareth Pulham Apr 16 '17 at 23:27
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Oh, I found out what happens - I'm using optiboot and by default it has no support for EEPROM writing. It just silently writes EEPROM data into flash, breaking your program. It needs to be recompiled with BIGBOOT=1 option to work properly.
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