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Discussion Groups | LPC900 | push & pull uotputs
Find help, specifications and source code for the LPC900. The LPC900 challenges Microchip and AVR based on the worlds most popular 8-bit architecture the 80C51. With a 2-clock core the LPC900 series is a high performance, very flexible and low cost 8-bit microcontroller family. Designers using or interested in these devices are encouraged to share their know-how and ask questions.
push & pull uotputs - denv...@gmail.com - Aug 3 9:41:30 2007
Hi,
i have a problem with the output ports of the LPC930. I try to switch a FET by toggling a port pin. Works just fine, but if I set the output = LOW in the initialization routine of the ports, the pin does not toggle anymore.
Where can be the problem?
cheers, Ró
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i have a problem with the output ports of the LPC930. I try to switch a FET by toggling a port pin. Works just fine, but if I set the output = LOW in the initialization routine of the ports, the pin does not toggle anymore.
Where can be the problem?
cheers, Ró
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )
RE: push & pull uotputs - "Poore, John" - Aug 3 11:25:05 2007
You must set it high during initialization as this overrides toggeling (I'm assuming that
you are open drain or weak pull-up mode)
John W. Poore, Principal Staff Scientist
-----Original Message-----
From: l...@yahoogroups.com [mailto:l...@yahoogroups.com] On Behalf Of d...@gmail.com
Sent: Friday, August 03, 2007 6:40 AM
To: L...@yahoogroups.com
Subject: [lpc900_users] push & pull uotputs
Hi,
i have a problem with the output ports of the LPC930. I try to switch a FET by toggling a port pin. Works just fine, but if I set the output = LOW in the initialization routine of the ports, the pin does not toggle anymore.
Where can be the problem?
cheers, Ró
Yahoo! Groups Links
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )
John W. Poore, Principal Staff Scientist
-----Original Message-----
From: l...@yahoogroups.com [mailto:l...@yahoogroups.com] On Behalf Of d...@gmail.com
Sent: Friday, August 03, 2007 6:40 AM
To: L...@yahoogroups.com
Subject: [lpc900_users] push & pull uotputs
Hi,
i have a problem with the output ports of the LPC930. I try to switch a FET by toggling a port pin. Works just fine, but if I set the output = LOW in the initialization routine of the ports, the pin does not toggle anymore.
Where can be the problem?
cheers, Ró
Yahoo! Groups Links
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )
Re: push & pull uotputs - denv...@gmail.com - Aug 6 2:40:53 2007
At another pin I have a LED and there it is working, even if I set the pin LOW during the
initialization.
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )
(You need to be a member of LPC900_users -- send a blank email to LPC900_users-subscribe@yahoogroups.com )