Hi Peter.
Thank you very much for your answer.
Yes, the website I do download test from is up online all the time.
I am running 4.1.2-bone12 kernel so I am using ttyS4, but that is good
point, it behaves the same when I use the 4.0.4-bone4 kernel which has got
ttyO4.
So this behavior is not related to the serial driver being in use.
I will test 38400
Kind Regards

2015-07-15 13:40 GMT+01:00 Peter Hurley <[email protected]>:

> On 07/15/2015 03:37 AM, 'Artur Festyn' via BeagleBoard wrote:
> > Hi Peter.
> > It is not carrier. I am pinging in the same time and there is no packets
> lost.
> > Also ppp doesn't report anything and works as if connected.
> >
> > It is also not a website problem.
>
> Because you're mimicking the setup on a non-BBB and it works fine?
>
>
> > I can't use CTS and RTS of any UARTS because I am using those pins.
> >
> > 115200
>
> This may be too fast for XON/XOFF flow control; what happens if you run
> 38400?
>
>
> > I don't know what DCD means, but I will find out and answer your
> question.
>
> DCD is the carrier pin from the modem.
>
>
> > At least it works, wget can finish after n tries.
> > Before the 8250 patch BBB was constantly crashing,
>
> That's very odd because you're not using the serial driver that patch was
> for.
>
> ttyO<n> are device nodes created by the omap-serial driver; my patch is for
> the 8250_omap driver which creates ttyS<n> device nodes.
>
>
>
> > 2015-07-15 0:08 GMT+01:00 Peter Hurley <[email protected]
> <mailto:[email protected]>>:
> >
> >     On 07/13/2015 03:29 AM, 'Artur Festyn' via BeagleBoard wrote:
> >     > I am using pure xon xoff flow control. Modem doesn't have RTS CTS
> connected.
> >     > I have applied your
> http://www.spinics.net/lists/linux-omap/msg119478.html
> >     > but I am not sure if it is relevant.
> >     > I am just trying and trying to make it work.
> >
> >     The errors below seem like carrier loss.
> >     That patch is for a different driver, and I can't see how it would
> apply
> >     to this situation anyway.
> >
> >     What baud rate are you trying to run s/w flow control at?
> >     Why not connect up RTS/CTS?
> >     Can you monitor the DCD output from the modem?
> >
> >     Regards,
> >     Peter Hurley
> >
> >
> >     > 2015-07-13 8:27 GMT+01:00 Artur Festyn <[email protected]
> <mailto:[email protected]> <mailto:[email protected] <mailto:
> [email protected]>>>:
> >     >
> >     >     Hi Peter.
> >     >     I have got proper communication.
> >     >     I can start download, but something like that happens regulary:
> >     >
> >     >     --2015-07-13 06:57:36--  (try: 2)
> http://download.thinkbroadband.com/100MB.zip
> >     >     Connecting to download.thinkbroadband.com <
> http://download.thinkbroadband.com> <http://download.thinkbroadband.com> (
> download.thinkbroadband.com <http://download.thinkbroadband.com> <
> http://download.thinkbroadband.com>)|80.249.9
>  9.148|:80... connected.
> >     >     HTTP request sent, awaiting response... 206 Partial Content
> >     >     Length: 104857600 (100M), 102175455 (97M) remaining
> [application/zip]
> >     >     Saving to: '100MB.zip.1'
> >     >
> >     >     100MB.zip.1           5%[>                     ]   5.04M
> 5.58KB/s   in 7m 2s
> >     >
> >     >     2015-07-13 07:04:24 (6.04 KB/s) - Connection closed at byte
> 5289637. Retrying.
> >     >
> >     >     --2015-07-13 07:04:26--  (try: 3)
> http://download.thinkbroadband.com/100MB.zip
> >     >     Connecting to download.thinkbroadband.com <
> http://download.thinkbroadband.com> <http://download.thinkbroadband.com> (
> download.thinkbroadband.com <http://download.thinkbroadband.com> <
> http://download.thinkbroadband.com>)|80.249.9
>  9.148|:80... connected.
> >     >     HTTP request sent, awaiting response... 206 Partial Content
> >     >     Length: 104857600 (100M), 99567963 (95M) remaining
> [application/zip]
> >     >     Saving to: '100MB.zip.1'
> >     >
> >     >     100MB.zip.1           7%[+                     ]   7.55M
> 6.58KB/s   in 6m 46s
> >     >
> >     >     2015-07-13 07:11:14 (6.32 KB/s) - Connection closed at byte
> 7915442. Retrying.
> >     >
> >     >     --2015-07-13 07:11:17--  (try: 4)
> http://download.thinkbroadband.com/100MB.zip
> >     >     Connecting to download.thinkbroadband.com <
> http://download.thinkbroadband.com> <http://download.thinkbroadband.com> (
> download.thinkbroadband.com <http://download.thinkbroadband.com> <
> http://download.thinkbroadband.com>)|80.249.9
>  9.148|:80... connected.
> >     >     HTTP request sent, awaiting response... 206 Partial Content
> >     >     Length: 104857600 (100M), 96942158 (92M) remaining
> [application/zip]
> >     >     Saving to: '100MB.zip.1'
> >     >
> >     >     100MB.zip.1          10%[+>                    ]  10.18M
> 6.49KB/s   in 7m 11s
> >     >
> >     >     2015-07-13 07:18:30 (6.25 KB/s) - Connection closed at byte
> 10676027. Retrying.
> >     >
> >     >     --2015-07-13 07:18:34--  (try: 5)
> http://download.thinkbroadband.com/100MB.zip
> >     >     Connecting to download.thinkbroadband.com <
> http://download.thinkbroadband.com> <http://download.thinkbroadband.com> (
> download.thinkbroadband.com <http://download.thinkbroadband.com> <
> http://download.thinkbroadband.com>)|80.249.9
>  9.148|:80... connected.
> >     >     HTTP request sent, awaiting response... 206 Partial Content
> >     >     Length: 104857600 (100M), 94181573 (90M) remaining
> [application/zip]
> >     >     Saving to: '100MB.zip.1'
> >     >
> >     >     100MB.zip.1                 12%[++++>
>          ]  12.89M  6.26KB/s   in 7m 32s
> >     >
> >     >     2015-07-13 07:26:06 (6.14 KB/s) - Connection closed at byte
> 13520551. Retrying.
> >     >
> >     >     --2015-07-13 07:26:11--  (try: 6)
> http://download.thinkbroadband.com/100MB.zip
> >     >     Connecting to download.thinkbroadband.com <
> http://download.thinkbroadband.com> <http://download.thinkbroadband.com> (
> download.thinkbroadband.com <http://download.thinkbroadband.com> <
> http://download.thinkbroadband.com>)|80.249.99.148 <tel:80.249.99.148>|:80...
> connected.
> >     >     HTTP request sent, awaiting response... 206 Partial Content
> >     >     Length: 104857600 (100M), 91337049 (87M) remaining
> [application/zip]
> >     >
> >     >
> >     >     2015-07-13 0:25 GMT+01:00 Peter Hurley <
> [email protected] <mailto:[email protected]> <mailto:
> [email protected] <mailto:[email protected]>>>:
> >     >
> >     >         Hi Jan,
> >     >
> >     >         On 07/11/2015 06:30 PM, Jan Kinkazu wrote:
> >     >         > HI all.
> >     >         > Has anyone made setserial working on BBB?
> >     >         >
> >     >         > root@beaglebone:~# setserial -g /dev/ttyO[124]
> >     >         > /dev/ttyO1, UART: undefined, Port: 0x0000, IRQ: 156
> >     >         > /dev/ttyO2, UART: undefined, Port: 0x0000, IRQ: 157
> >     >         > /dev/ttyO4, UART: undefined, Port: 0x0000, IRQ: 158
> >     >         >
> >     >         > Why UART type is undefined? Why port is 0x0000?
> >     >
> >     >         setserial has not been updated in a long time and so does
> not understand newer
> >     >         port types. If you look at the man page for the 'uart'
> parameter, you'll
> >     >         see the known values are quite limited compared to the
> current known
> >     >         port types in <linux/serial_core.h>
> >     >
> >     >         Nor does it understand memory-mapped port addresses.
> >     >
> >     >         > Why any setserial command fail?
> >     >         >
> >     >         > root@beaglebone:~# setserial /dev/ttyO4 baud_base 115200
> >     >         > Cannot set serial info: Invalid argument
> >     >
> >     >         The omap_serial driver does not allow port information to
> be changed
> >     >         via setserial.
> >     >
> >     >         Note that the 8250_omap driver new to Linux 3.19+ does.
> >     >
> >     >         > I have got SIMCOM908 modem connected to UART4.
> >     >         > UART is unresponsive once per 5-8 mins when downloading
> 100mb zip file.
> >     >         > I thought it is because the serial port is not set up
> properly.
> >     >         > xon/xof are switched in ppp and in modem.
> >     >
> >     >         You can set the tty baud rate with stty, like so:
> >     >
> >     >         $ stty -F /dev/ttyO4 115200
> >     >
> >     >         Regards,
> >     >         Peter Hurley
>
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