Thank you for your prompt response!!
--- In "charliem_1216" <>
wrote:
>
> You may have a steep learning curve, these boards are not aimed at
end
> users, but rather developers & engineers that further customize
them.
>
Thanks I'll try my best ;-)
>
> Seems the TS-7390 isn't too well documented. Looking at the
> schematic, COM1 header carries signals for the UART1 serial ports
at
> RS-232 level. I believe other pins on COM1 header can either
serve as
> the modem control / flow control signals of UART1, or as Tx/Rx of
two
> other RS-232 ports, depending on how the port is opened in linux.
>
I think I should mention that I am only in RS-233 interested
> Also, check your cables & device, looking at the TS-7390 schematic
on
> the TS website. COM1 & COM2 headers are at the top of page 4.
>
As mentioned in the other reply the devices are ttyAM..
where ttyAM1 = COM1
> See above. It looks to me (from the schematic) that you can have
(4)
> ports at RS-232 signal levels, as long as you don't need any
hardware
> flow control or modem flow control. There is some (very little)
> documentation on the TS-7350 UART at (near the bottom):
> http://www.embeddedarm.com/about/resource.php?item=371
>
> Look that over, and note that the device numbers don't really
> correspond to header numbers. IE, ttyz0 corresponds to COM2 header
> pin 3 (TxD) and pin 2 (RxD).
>
> regards, ......... Charlie
>
I had looked at that document before but they this system does not
have a PC/104 bus and this table:
XUART:
# | RS-header | Tx / X+ | Rx / X- | TxEn
0 232 COM2 TxD(3) RxD(2) N/A
1 232 COM1 RTS(7) CTS(8) N/A
2 232 COM1 DTR(4) DCD(1) N/A
did not make too much sense to me.
Let's say I am only interested in TX / RX (transmit/receive)
which PINs would that be? Is the JTAG and does it mean I have to
disable the console output (ttyAM0) to get to these ports/xuart
devices?
In the end together with the other 2 ttyAM.. ports I at least had my
4 serial ports.
Thanks,
Ole
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