USB Bitbanger with AVR, Good for NOR flash programming etc.

[rikimaer]

Will be compatible at90usbkey?


Have about 50 I/O.

Thanks
Best Regards.

[heretic]

hi everybody ! i need a help to find tihis pinout for test points in my 40GB

it's a SEM-001

http://psx-scene.com/forums/attachme...1&d=1295868706

[IMG]
http://psx-scene.com/forums/attachme...1&d=1295868706
[/IMG]

[joohan]

It's strange... cause the NOR isn't encrypted! Only the files that are inside are. So you maybe have done something wrong. BTW if you can post your code it would be great!

I had swapped some data lines, and the endiannes was wrong but now it works.

And if someone finds the source useful then here you are.
Connect the lines according to the posted schematic, and ce, oe etc can be easily configured in the source, as long as it is on PORTE

It depends on LUFA ( not included )

the protocol so far:
read block: r+[blocknumber]
read all blocks r+[decimal 229]

[ieder-zijn-meis]

...

[cmal1492]

But if your board is SEM-001, then it is model CECHG, type 0x05 with 256MB NAND interleaved on 2 chips (Samsung K9F1G08U0A-PIB0), not NOR in single noninterleaved 16MB chip (Spansion S29GL128N90TFIR2 or Samsung K8Q2815UQB-P14B). See:

ieder-zijn-meis, the dual NAND PS3 has a NOR emulation chip and the PS3 sees dual NAND as 256M NOR (it was interleaved to make up for the speed differences between NOR and NAND), as far as I can tell the test points still correspond to NOR access - unless you are lifting the NAND or wiring directly to the NAND it may be possible to still access these via those point without dealing with the NAND ecc/edc stuff.

[Gee99x]

Hey joohan thanks for the board layout. What ext. clock speed are you using and what are the capacitor values on this board?

[heretic]

Good job
jessolox / jestero for the NOR points on CECHL04 (Spansion S29GL128N90TFIR2)
and joohan for debugging/posting sources



Attachement error...

[lang=it]here my pinout help plz !! =) it's totaly different

http://www.nextrl.it/forum/index.php...attach_id=1279[/lang]

[joohan]

Hey joohan thanks for the board layout. What ext. clock speed are you using and what are the capacitor values on this board?

Clock speed should be max 8Mhz for 3.3V ( according to AVR datasheet ), And only 8 or 16Mhz is "compatible" with the USB device. So 8Mhz is the only choice.
BUT I used 16Mhz, only because I was out of 8Mhz and it does work but I would not recommend it.

About the caps, around 12-20p for the XTAL and the rest anything 100n -> 1u should be ok.

And the resistors are only there to limit current so they are not critical.
You might connect HWB to ground (preferably through a resistor) that way it will enter bootloader on external reset, but NOT on bod or por reset. (This is an undocumented feature) Quite nice since then you will only need one switch for programming.

[Gee99x]

Thanks for that. Kudos for your work.

[IceKiller]

Anyone here have a NOR dump could pm me thx.