If your Stamp is resetting when the COM port opens, your PC is probably
asserting DTR to +12 volts. DTR is connected to the ATN pin on the
stamp. Asserting this line resets the stamp in prepartaion for
programming. To get around this you may wish to:
1. Change the PC software to not bring ATN to +12 volts (if possible)
2. Or, devise some method of breaking ATN. Either physically, or by
installing a 0.1 uF cap between DTR and ATN. I believe there is more
info on this in Al William's FAQ.
problem.
On Fri, 15 Jun 2001 12:09:43 -0500 "Ricky Konvicka"
<ricky@m...> writes:
> Thanks Todd. Another question. Why does windows or hyperterminal
> reset the stamp when they are turned on?
Archiver
Posts: 46,084
Comments
asserting DTR to +12 volts. DTR is connected to the ATN pin on the
stamp. Asserting this line resets the stamp in prepartaion for
programming. To get around this you may wish to:
1. Change the PC software to not bring ATN to +12 volts (if possible)
2. Or, devise some method of breaking ATN. Either physically, or by
installing a 0.1 uF cap between DTR and ATN. I believe there is more
info on this in Al William's FAQ.
problem.
On Fri, 15 Jun 2001 12:09:43 -0500 "Ricky Konvicka"
<ricky@m...> writes:
> Thanks Todd. Another question. Why does windows or hyperterminal
> reset the stamp when they are turned on?