- uart
- Posted by manish rathi on September 14th, 2004
Hi,
Cd any body tell how can i test whether my uart is working correctly
in dce mode. Is there any suite available on net to test my uart.
Tell me how can i start (literature)controlling modem theu uart?
- Posted by Franc Zabkar on September 17th, 2004
On 14 Sep 2004 09:16:20 -0700, manish.rathi@st.com (manish rathi) put
finger to keyboard and composed:
Can you explain exactly what you wish to do? What do you mean by "DCE
mode"? Are you asking for register level programming advice?
- Franc Zabkar
--
Please remove one 's' from my address when replying by email.
- Posted by chuck smoko on September 19th, 2004
I think DCE mode needs to be done by a DCE device like
a modem. Null modems can trick the other side by putting
most of the signals where they need to be, but cheat w/ DCD
data carrier detect. This signal that may be difficult to mimic.
It is a modem to DTE signal to say, "I have carrier and thus
a connection to the remote modem. Go ahead and put up the
login banner". Like on a modem bank connected to a
server.
manish rathi wrote:
- Posted by Floyd L. Davidson on September 20th, 2004
chuck smoko <csmoko@earthlink.net> wrote:
A UART doesn't know DCE from DTE. The difference is merely
which signals from the UART are connected to which pins on
the connector.
The best way to test a UART is to connect it to something with
known responses. For example, to a modem, a terminal, or
another computer (or if you are lucky, a data analyzer).
--
FloydL. Davidson <http://web.newsguy.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@barrow.com
