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Discussion Groups | Rabbit-Semi | Connection Itegrity Issues
This is a group for folks designing and programming embedded systems using the Rabbit Semiconductor C-programmable microcontroller. Rabbit Semi is a spin-off from Z-World who makes a variety of embedded modules and tools. This group is not affiliated with either Rabbit or Z-World, but is a user forum for sharing ideas, asking questions, flaunting knowledge, and other typical user group stuff. The Rabbit is a powerful uC, supported by a full-featured C-compiler.
Connection Itegrity Issues - Bob Hohentanner - Sep 24 9:19:43 2008
Hi,
I and several of our customers have found that just connecting one of
our Rabbit3000 based devices to a switch may yield a non-reliable
connection, may connect for a few seconds, drop, reconnect, drop,
reconnect and so on. If the switch is reset and then the devices reset,
the connection is solid and doesn't drop at all. Is there something that
I should be doing in firmware that the Rabbit stack doesn't do? I
assumed that all of the house keeping, with respect to connecting to a
switch, was handled by the stack, and for the most part it seems to be.
I've only seen this with a few switches. I'm using DC7.33SE and the
circuit is designed and made by us. It hasn't happened often, only a
couple of customers and I've been able to duplicate it but it seems like
this should never be an issue. I'd like to just blame the switches, but
other Ethernet devices don't have the same problem.
Thanks,
Bob
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )
I and several of our customers have found that just connecting one of
our Rabbit3000 based devices to a switch may yield a non-reliable
connection, may connect for a few seconds, drop, reconnect, drop,
reconnect and so on. If the switch is reset and then the devices reset,
the connection is solid and doesn't drop at all. Is there something that
I should be doing in firmware that the Rabbit stack doesn't do? I
assumed that all of the house keeping, with respect to connecting to a
switch, was handled by the stack, and for the most part it seems to be.
I've only seen this with a few switches. I'm using DC7.33SE and the
circuit is designed and made by us. It hasn't happened often, only a
couple of customers and I've been able to duplicate it but it seems like
this should never be an issue. I'd like to just blame the switches, but
other Ethernet devices don't have the same problem.
Thanks,
Bob
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )
RE: Connection Itegrity Issues - Brian Horn - Sep 29 10:16:54 2008
Bob,
The problem is most probably being caused by the switch incorrectly trying
to auto negotiate the link speed with the Rabbit unit. Since the Rabbit is
fixed at 10 Mbps the switch has to change to its speed.
Regards,
Brian
Winters Broadband
P. O. Box 789
Winters, CA 95694
T: (530) 852-7990
From: r...@yahoogroups.com [mailto:r...@yahoogroups.com] On
Behalf Of Bob Hohentanner
Sent: Wednesday, September 24, 2008 6:19 AM
To: r...@yahoogroups.com
Subject: [rabbit-semi] Connection Itegrity Issues
Hi,
I and several of our customers have found that just connecting one of our
Rabbit3000 based devices to a switch may yield a non-reliable connection,
may connect for a few seconds, drop, reconnect, drop, reconnect and so on.
If the switch is reset and then the devices reset, the connection is solid
and doesn't drop at all. Is there something that I should be doing in
firmware that the Rabbit stack doesn't do? I assumed that all of the house
keeping, with respect to connecting to a switch, was handled by the stack,
and for the most part it seems to be. I've only seen this with a few
switches. I'm using DC7.33SE and the circuit is designed and made by us. It
hasn't happened often, only a couple of customers and I've been able to
duplicate it but it seems like this should never be an issue. I'd like to
just blame the switches, but other Ethernet devices don't have the same
problem.
Thanks,
Bob
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )
The problem is most probably being caused by the switch incorrectly trying
to auto negotiate the link speed with the Rabbit unit. Since the Rabbit is
fixed at 10 Mbps the switch has to change to its speed.
Regards,
Brian
Winters Broadband
P. O. Box 789
Winters, CA 95694
T: (530) 852-7990
From: r...@yahoogroups.com [mailto:r...@yahoogroups.com] On
Behalf Of Bob Hohentanner
Sent: Wednesday, September 24, 2008 6:19 AM
To: r...@yahoogroups.com
Subject: [rabbit-semi] Connection Itegrity Issues
Hi,
I and several of our customers have found that just connecting one of our
Rabbit3000 based devices to a switch may yield a non-reliable connection,
may connect for a few seconds, drop, reconnect, drop, reconnect and so on.
If the switch is reset and then the devices reset, the connection is solid
and doesn't drop at all. Is there something that I should be doing in
firmware that the Rabbit stack doesn't do? I assumed that all of the house
keeping, with respect to connecting to a switch, was handled by the stack,
and for the most part it seems to be. I've only seen this with a few
switches. I'm using DC7.33SE and the circuit is designed and made by us. It
hasn't happened often, only a couple of customers and I've been able to
duplicate it but it seems like this should never be an issue. I'd like to
just blame the switches, but other Ethernet devices don't have the same
problem.
Thanks,
Bob
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )