Messages in this thread | | | Subject | Re: Serial issue | From | Lee Revell <> | Date | Fri, 18 Aug 2006 12:34:04 -0400 |
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On Fri, 2006-08-18 at 10:44 -0500, Paul Fulghum wrote: > On Thu, 2006-08-17 at 20:47 -0400, Lee Revell wrote: > > I've found a weird serial bug. My host is a Via EPIA M-6000 running > > 2.6.17 connected to a PPC Yosemite board running 2.6.13. > > > > In all cases the serial console works great. But, with the default > > setting of IRQ 4, Kermit file transfers via the serial interface simply > > time out. However if I use polling mode (setserial /dev/ttyS0 irq 0 on > > the host), file transfers work. > > > > When set to IRQ 4, the interrupt count does increase. > > > > # cat /proc/tty/driver/serial > > serinfo:1.0 driver revision: > > 0: uart:16550A port:000003F8 irq:4 tx:267 rx:667 DSR|CD > > [...] > > > > Any ideas? I'm guessing it might be a quirk of the VIA chipset? > > You mention serial console. Hasn't there been some changes > related to reenabling the THRE interrupt after sending > console data? IIRC the changes fixed transmit stalls on > some machines but broke things on other machine. > > Can you try disabling the serial console and see > if the file transfer starts working? >
I tried it with the serial console inactive (not disabled) and file transfers don't work whether I set IRQ 0 or 4. Maybe I'm doing it wrong - I connected to the target via SSH and ran "gkermit -r" then ran ckermit locally and issued a "send file.txt" command.
Normally I connect to the target with "kermit -c" which gives me a serial console, then issue a "gkermit -r", then escape to my local Kermit and issue the send file command.
Lee
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