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 <fes...@googlemail.com 
> <mailto:fes...@googlemail.com>>:
> 
>     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> (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> (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> (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> (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> (download.thinkbroadband.com 
> <http://download.thinkbroadband.com>)|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 <pe...@hurleysoftware.com 
> <mailto:pe...@hurleysoftware.com>>:
> 
>         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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