From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Sun, 08 Oct 2006 14:35:57 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-help] USB to serial converter using in Xenomai
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To: Pavel Pirkl <pavelpirkl@domain.hid>
Cc: xenomai@xenomai.org

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Pavel Pirkl wrote:
> Hello,
> 1.
> I am using USB to serial convertes with FTDI chip. But I don=B4t know
> which paramaters of irq and ioaddr I must to set for xeno_16550A.ko .
> Can you help me where I found this parameters?
>=20
> 2.
> Now I am using two serial link defined us
> #!/bin/sh
> setserial /dev/ttyS1 uart none        #COM2
> setserial /dev/ttyS2 uart none        #COM3
> insmod    ./xeno_nucleus.ko
> insmod    ./xeno_native.ko
> insmod    ./xeno_rtdm.ko
> insmod    ./xeno_16550A.ko ioaddr=3D0x2f8,0x3e8 irq=3D3,5 tx_fifo=3D10,=
10
> start_index=3D0    #COM2, COM3
>=20
> This two serial link works very good.
> But if I am set for example this
> #!/bin/sh
> setserial /dev/ttyS2 uart none        #COM3
> setserial /dev/ttyS3 uart none        #COM4 - not function ??
> insmod    ./xeno_nucleus.ko
> insmod    ./xeno_native.ko
> insmod    ./xeno_rtdm.ko
> insmod    ./xeno_16550A.ko ioaddr=3D0x3e8,0x3f8 irq=3D5,10 tx_fifo=3D10=
,10
> start_index=3D0    #COM3, COM4
>=20
> The COM3 works but COM4 doesn=B4t work. Where is problem?

The FTDI can only be used via an USB stack + a FTDI device drivers,
there is no such thing as 16550A emulation via USB devices.

I have such a FTDI driver for the USB4RT stack here, but it is in an
"experimental" (means unusable :-/) state. I still hope we can resolve
this one day, but I cannot promise when.

Jan


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