Page 10 of 11
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 09 Jan 2020, 12:52
by oscarboiro
Today I erase a FX unit, after erase (completed process) I disconnect the power, my purpose are write unit more later.
When I connect the power later, I don’t possible connect with jtag and show this message:
369CEF4E-BC1D-4955-AEA4-4F14DF873EA4.jpeg
I try to delete “Disable MMU”
149CB469-EBD0-4F9D-B44C-541832D25693.jpeg
And now after push connect don’t have problem, but the problem comes when push write:
70B62A32-B6F5-4207-90AD-13E6CF582648.jpeg
Now I have another killed unit!! Hahahaha
And my question, what is the method to write a blank OMAP?
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 09 Jan 2020, 15:50
by Stevebe
I have the same problem I erased a NX and got the same messages and Con not connect any more
Has the project.fladh file been removed
74EFF858-F686-4CDC-BD45-FD90AF36808F.png
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 09 Jan 2020, 16:27
by DGAlexandru
Read my post from this thread -
viewtopic.php?f=3&t=2&start=70#p442 .
I had the same problem.
Download and use that jlink configuration file.
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 09 Jan 2020, 18:39
by Go4IT
He used my JFlash-Init-File and this already disables WP by Software. Trying doing so by hardware would not harm, anyway.
And keep my warning in mind to have the JTAG wires as short as possible (5 to 10cm max).
In a very last thing beware that even Flash chips may fail in a way they can't be erased or changed anymore...
Also the image above shows some kind of RAM problem, and this is not the external one, it's the internal RAM of the OMAP! So maybe the OMAP fails. You could try to reflow it...
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 09 Jan 2020, 18:52
by Stevebe
Go4IT wrote: ↑09 Jan 2020, 18:39
He used my JFlash-Init-File and this already disables WP by Software. Trying doing so by hardware would not harm, anyway.
And keep my warning in mind to have the JTAG wires as short as possible (5 to 10cm max).
In a very last thing beware that even Flash chips may fail in a way they can't be erased or changed anymore...
Also the image above shows some kind of RAM problem, and
this is not the external one, it's the internal RAM of the OMAP! So maybe the OMAP fails. You could try to reflow it...
Ok I thought as much can you pop the project.flash file in my Dropbox. As I have lost the file due to a drive problem
This is Andy’s old board. Just waiting for your mem to arrive ,
K,
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 09 Jan 2020, 21:59
by oscarboiro
hello!!! I read my Fx and all sectors have "FF", do you have a backup from FX? and another from NX?
thanks!!!
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 09 Jan 2020, 22:50
by oscarboiro
oscarboiro wrote: ↑09 Jan 2020, 21:59
hello!!! I read my Fx and all sectors have "FF", do you have a backup from FX? and another from NX?
thanks!!!
i have a backup of all units, thanks!!!
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 10 Jan 2020, 06:21
by Go4IT
Stevebe wrote: ↑09 Jan 2020, 18:52
Ok I thought as much can you pop the project.flash file in my Dropbox. As I have lost the file due to a drive problem
This is Andy’s old board. Just waiting for your mem to arrive ,
K,
Oh, they are all available here:
https://mk4-wiki.denkdose.de/artikel/na ... figurieren (will translate this page as soon as i have time for it...)
But i don't think it's related to external SDRAM. You can even JTAG to Flash without external SDRAM soldered in, I told in this thread a while ago. If you are going to change the RAMs anyway, try it out yourself.
Best bet for now is that there is a problem with the OMAP itself.
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 10 Jan 2020, 20:52
by Go4IT
Hey oscarboiro, isn't this the same problem you got with your NX here:
viewtopic.php?f=3&t=2&start=60#p308
One thing you may try: replace the eeprom with one from a working device.
Also check voltages (look view posts before).
Re: (SOLVED!) How to read and write mainboard Flash (Spansion S29GL)
Posted: 12 Jan 2020, 12:25
by Go4IT
Did you also check the voltages?
IMG_3595.JPG
The main 1.6 volts is for the HMI and 2.5 volts for the RAM. The Flash is driven by the input 3.3 voltage.