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Message

Flash utility won't connect when using a 3.6864MHz crystal

2004-08-11 by rattencremesuppe

Hi,

I'm using a TinyARM eval board which worked fine with a 10MHz crystal.
Then we replaced it with a 3.6864MHz crystal and now Philips Flash
utility says that it can't connect to the test board.

When measuring the UART TX pin with a scope, there is some traffic
when trying to connect. But Philips flash utility somehow doesn't
recognize.

My flash utility settings are:
Device: LPC2106
XTAL Freq. (kHz): 3686
Use Baud Rate: (have tried all available baudrates with no success)
Time-Out (sec): 10
"Use DTR/RTS" is unchecked (there are only Rx & Tx connected)

3.6864 MHz seems to be a fairly common clock rate and there should be
some standard baudrates available (divisor 32 for 115.2 kBaud, for
example)

Is anyone out there using LPC2106 w/ 3.6864 crystal and knows how to
use the flash utility for this setup? If not, are there any
alternatives to using the philips flash utility?

Obviously, I can't use a own bootloader because there is no
possibility to initially put it on the chip, when the flash utility
doesn't work.

Best regards,
Patrick

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