BasicMicro - Forums

Hi
if I write to the Eeprom: “writedm 0 ,[1,2,3,4,5 ]” and read it
“ readdm 0,[str Saved\5] “ it reads correct.
but if I program the nano again without using the writedm command,
and then read the EEprom, I get: “ 15,15,15,15,15 ”
Should not the Eeprom keep the “1,2,3,4,5”..?

But the main Problem is:
If I switch on and off the Power, sometime the Eeprom keeps the content, but sometimes it gets changed…
Is it my programming mistake, misunderstanding, or is there something wrong..?
Heinz

Hi
......My mistake....

I jump out of an gosub routine by mistake and got wrong numbers in variables. It happened only in the start-up sequence, so it confused me.

I belive:………..??
Programming the nano change the Eeprom too ??
Programming the AtomPro don’t change the Eeprom…??

Heinz

As I remember it, all the memories (FLASH, RAM and EEPROM) on the Nano and Atom parts are cleared at time of programming.
I can't say for the Pros.
If you MUST keep collected data intact if you know you're going to be reprogramming the Nano, then use an external EEPROM and write to that.
Later.

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kenjj
http://blog.basicmicro.com/
http://kjennejohn.wordpress.com/

Atom and Nano chips are completely erased during programming. AtomPro eeprom is not(works like an external eeprom).

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