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Greetings,

Is getting 0x50 back from the X2 Bit setting valid ?

According to AN461 only bit 7 is valid, or rather is set for 12/6 clock mode. But i am seeing this returned as x50...

Any one have a clue if this matters ?

Thanks,
Lenny

TX -->  ":020000050003F6"
RX <--- ":020000050003F650."

**  READ : CLOCKBIT = 0x50

Thanks,

Just as a point of disclaimer, i see this issue with your software utility as well as my own perl script that implements the protocol. That is how i know the "R"'s are being sent.

So i think your utility is not the issue, but rather my use of these CPU's.

Looking at my layout, i can see that 2.7 is tied high, but 2.6 is being used as a clock bit for another device. That could be the cause of the issue.

Is it your experience that when a device is sending "R" for programming that it can be recovered then. (and hopefully via ISP...) ?

Thanks For your help,
-Lenny

Greetings,

I have had a few of my MCU's "die" in this described manner, and am a little confused as to how this can happen...

I can communicate with the bootloader, read the settings, but when i attempt to actually flash the device it is failing.  (Which means that it is sending back and "R" rather than a "." character when the programming line is sent).

Does anyone know A) How this can Happen, or Why  B) How do i recover ?

Thanks, !
Codematic

PS : Your flashmagic utility kicks major butt.



Post Edited (05-26-04 03:58)