[Xenomai-help] USB to serial converter using in Xenomai

[Xenomai-help] USB to serial converter using in Xenomai

[Pavel Pirkl]

Hello,
1.
I am using USB to serial convertes with FTDI chip. But I don´t know
which paramaters of irq and ioaddr I must to set for xeno_16550A.ko .
Can you help me where I found this parameters?

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=0x2f8,0x3e8 irq=3,5 tx_fifo=10,10 
start_index=0    #COM2, COM3

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=0x3e8,0x3f8 irq=5,10 tx_fifo=10,10 
start_index=0    #COM3, COM4

The COM3 works but COM4 doesn´t work. Where is problem?

Thank you very much for your answer.
Pavel Pirkl.

Re: [Xenomai-help] USB to serial converter using in Xenomai

[Jan Kiszka]

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Pavel Pirkl wrote:
> Hello,
> 1.
> I am using USB to serial convertes with FTDI chip. But I don´t know
> which paramaters of irq and ioaddr I must to set for xeno_16550A.ko .
> Can you help me where I found this parameters?
> 
> 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=0x2f8,0x3e8 irq=3,5 tx_fifo=10,10
> start_index=0    #COM2, COM3
> 
> 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=0x3e8,0x3f8 irq=5,10 tx_fifo=10,10
> start_index=0    #COM3, COM4
> 
> The COM3 works but COM4 doesn´t 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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