* Serial issue
@ 2006-07-26 21:45 Lee Revell
2006-07-26 21:57 ` Wolfgang Denk
2006-07-26 22:00 ` Lee Revell
0 siblings, 2 replies; 3+ messages in thread
From: Lee Revell @ 2006-07-26 21:45 UTC (permalink / raw)
To: linuxppc-embedded
I'm trying to connect to a Yosemite 440 PPC board using the serial
console. I've tried everything in every Linux Serial FAQ and HOWTO but
no matter what, I can receive but I cannot transmit.
I know the cable is good, and the PPC board seems OK as I can see all
the boot messages. Could it be a bug in my host's serial port? I'm
using a Via EPIA M6000.
$ sudo cat /proc/tty/driver/serial
serinfo:1.0 driver revision:
0: uart:16550A port:000003F8 irq:0 tx:0 rx:5379 oe:7 RTS|DTR|DSR|CD
No matter what I do, tx bytes is stuck at 0. I've tried irq 0 (polling)
and irq 4. No difference at all.
Help...
Lee
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Serial issue
2006-07-26 21:45 Serial issue Lee Revell
@ 2006-07-26 21:57 ` Wolfgang Denk
2006-07-26 22:00 ` Lee Revell
1 sibling, 0 replies; 3+ messages in thread
From: Wolfgang Denk @ 2006-07-26 21:57 UTC (permalink / raw)
To: Lee Revell; +Cc: linuxppc-embedded
In message <1153950324.2927.6.camel@mindpipe> you wrote:
> I'm trying to connect to a Yosemite 440 PPC board using the serial
> console. I've tried everything in every Linux Serial FAQ and HOWTO but
> no matter what, I can receive but I cannot transmit.
Did you disable hardware flow control in your communication program?
Which communication program do you use, btw? I recommend C-kermit;
for details see also
http://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3.?stickboard=yosemite
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
How many seconds are there in a year? If I tell you there are 3.155 x
10^7, you won't even try to remember it. On the other hand, who could
forget that, to within half a percent, pi seconds is a nanocentury.
- Tom Duff, Bell Labs
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Serial issue
2006-07-26 21:45 Serial issue Lee Revell
2006-07-26 21:57 ` Wolfgang Denk
@ 2006-07-26 22:00 ` Lee Revell
1 sibling, 0 replies; 3+ messages in thread
From: Lee Revell @ 2006-07-26 22:00 UTC (permalink / raw)
To: linuxppc-embedded
On Wed, 2006-07-26 at 17:45 -0400, Lee Revell wrote:
> I'm trying to connect to a Yosemite 440 PPC board using the serial
> console. I've tried everything in every Linux Serial FAQ and HOWTO but
> no matter what, I can receive but I cannot transmit.
I've resolved the problem - unlike my reference system, with this host,
hardware flow control must be disabled for it to work.
Sorry for the noise.
Lee
^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-07-26 21:45 Serial issue Lee Revell
2006-07-26 21:57 ` Wolfgang Denk
2006-07-26 22:00 ` Lee Revell
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