- UART
- Posted by lee on April 27th, 2006
How does the UART know that the device connected to it is ready to
receive data?
- Posted by Deep Reset on April 27th, 2006
"lee" <leela2403@gmail.com> wrote in message
news:1146157270.340697.41210@u72g2000cwu.googlegro ups.com...
When does our assignement have to be handed in?
Deep.
- Posted by Kurt Harders on April 27th, 2006
Hi Lee,
lee wrote:
It does not know anything about the connected device. The driver may
look at the handshake lines (DTR, RTS, CTS...) but thats not part of
the UART.
Regards, Kurt
--
Kurt Harders
PiN -Präsenz im Netz GITmbH
mailto:news@kurt-harders.de
http://www.pin-gmbh.com
- Posted by techie_alison on April 27th, 2006
"lee" <leela2403@gmail.com> wrote in message
news:1146157270.340697.41210@u72g2000cwu.googlegro ups.com...
UART on what?
It doesn't.
- Posted by cs_posting@hotmail.com on April 27th, 2006
Kurt Harders wrote:
A lot of the time those handshaking signals run across the same chip
where the UART function is found. But it's true that simple UART need
not pay attention to them - they would merely show up in registers the
host CPU could access.
With buffered UARTs though, the buffering will not do much good in a
handshaked application unless the control circuit for the buffers
monitors and drives the handshaking signals. You could of course argue
that a buffered UART is simply a dumb UART surrounded by a buffer and
it's controller, and argue that the buffer and it's controller are
merely part of a driver transformed into hardware.
- Posted by Grant Edwards on April 27th, 2006
On 2006-04-27, Kurt Harders <news@kurt-harders.de> wrote:
It depends on the UART. Some don't know anything. Some watch
the handshake lines. Some watch for xon/xoff characters.
That depends on the UART. The better UARTs do indeed look at
CTS and/or DSR, and some even monitor the receive datastream
for xon/xoff characters.
--
Grant Edwards grante Yow! I OWN six pink
at HIPPOS!!
visi.com
- Posted by 42Bastian Schick on April 28th, 2006
On 27 Apr 2006 10:01:10 -0700, "lee" <leela2403@gmail.com> wrote:
How about reading manuals ?
Think before ask, today: Think, Google, ask ;-)
--
42Bastian
Do not email to bastian42@yahoo.com, it's a spam-only account :-)
Use <same-name>@monlynx.de instead !
