Avoid EEPROM reset when flashing

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Clemi

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Hello,

I have encountered the problem, that when I'm flashing the Teensy 3.2 with a program, also settings I've written to the EEPROM are erased.
In an earlier post I read, that this is a normal behaviour for Teensy 3.x.
However, until a while ago I could upload sketches to my Teensy (probably it was a Teensy 3.1) without erasing the EEPROM.

Maybe there is some hidden flag that can be set to erase / not erase the EEPROM?

I would be really glad if anyone could give me a hint where this ominous flag might be found, or I if there is another reason why in some cases EEPROM is erased an in some not.

Thank you for your help!

Clemi
 
The EEPROM is supposed to be preserved when you upload.

On the earliest Teensy 3.0 it was not preserved. This was fixed by an update in mid-2013. All 3.1 and 3.2 are supposed to preserve it.
 
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