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IrDA stack faulty on some connection delays?

Hello irda-community,

I am performing connection reliability tests between
an ubuntu linux host and an embedded linux system.

Using irprintfx on the embedded system and irscanfx
on the host system works without problems.

But when I try to continously send data using different
delays between the messages, the irda stack seems
to get in a state where it is temporary unable to send
or queue data.

With a delay of 1s everything works fine.

Test setup:
        server (embedded-system)
                irattach /dev/ttyS2 -s
                irprintfx
                [waiting...]

        client (ubuntu-system)
                irattach /dev/ttyS0 -d tekram -s
                for interval in 1 5 15 45; do
                        i=0
                        while [ $i -lt 20 ]; do
                                echo -e "test 123" | irscanfx
                                sleep $interval
                                let "i+=i"
                        done
                done;

Using a delay of 5s I am able to send one or two
messages, then I get one or two times an error on the
client side "connect: Network is unreachable", and so on.

The question is: what causes the irda stack to be so
faulty on some connection delays?

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mcs7780 + logitech harmony

Hi,

I'm using Slackware 13.37 (32-bit).  With the default kernel, my 
taiwanese USB/IrDA Dongle seems to be recognized with the mcs7780 
module.  Also, I've got a Logitech Harmony 200 universal remote which I 
would like to use with it.  It can eventually emulate an MCE remote, but 
I'm not sure that's needed.  I still have configure the universal remote 
for some target device, though, and I don't which one.

There's several issues here, the first one being my IrDA receiver to 
work properly.

Are irda-utils really necessary ?  I cannot compile it on my system, 
although I got kernel headers and source available,
	smc.c:35:20: fatal error: asm/io.h: No such file or directory

Should I compile a custom kernel or is it supposed to work already, 
since the dongle seems to be recognized ?

# lsmod|grep mcs
mcs7780                 6455  0
irda                   90780  1 mcs7780
crc_ccitt               1087  2 mcs7780,irda

# cat /proc/net/irda/discovery
IrLMP: Discovery log:

# setserial -g -a /dev/ttyS*
/dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4
         Baud_base: 115200, close_delay: 50, divisor: 0
         closing_wait: 3000
         Flags: spd_normal skip_test

/dev/ttyS1, Line 1, UART: unknown, Port: 0x02f8, IRQ: 3
         Baud_base: 115200, close_delay: 50, divisor: 0
         closing_wait: 3000
         Flags: spd_normal skip_test auto_irq

/dev/ttyS2, Line 2, UART: unknown, Port: 0x03e8, IRQ: 4
         Baud_base: 115200, close_delay: 50, divisor: 0
         closing_wait: 3000
         Flags: spd_normal skip_test auto_irq

/dev/ttyS3, Line 3, UART: unknown, Port: 0x02e8, IRQ: 3
         Baud_base: 115200, close_delay: 50, divisor: 0
         closing_wait: 3000
         Flags: spd_normal auto_irq

# findchip
bash: findchip: command not found

# irdadump
bash: irdadump: command not found

thanks

Pierre-Philipp

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