RS232 control signals etc

Hello All,

I'm considering the mini2440 for a project that, among other things, needs
some RS232 ports. 

However, none of the serial ports seems to include RS232 control signals,
e.g. RTS, CTS etc. (Not even the port that has a DB9 connector - at least
not documented in the available schematics in the downloads section).

Are these control signals available somewhere and are they supported by the
WinCE drivers? If not, how do one go about adding these pins to the
available ports and ensure WinCE driver support?

Also, one or more PCMCIA and CF ports would be nice. Any ideas about how to
add them to e.g. the system bus and support them in WinCE? (Perhaps PC104
modules with WinCE drivers or something like that?)

Thanks in advance.

Best regards,
gch

i am using embedsky 2440 not mini2440 they look almost same and i have cts
and rts signals on com port 1

and if i want to use com port 2 then com port 3 becomes rts and cts

yes there is slight change is driver of serial port

you should see in serial.c or files that comes with your mini2440

> However, none of the serial ports seems to include RS232 control signals,
> e.g. RTS, CTS etc. (Not even the port that has a DB9 connector - at least
> not documented in the available schematics in the downloads section).

The DB9 connector (COM0) on the Mini2440 has also connected RTS and CTS.
Have a look in the schematics on page 6: Serial Interface
http://www.friendlyarm.net/mini2440/mini2440_schematic.pdf

Regards,
Andreas

Thanks for the answers. Much appreciated. 

Guess I didn't read that schematic too carefully - sorry about that.

Ok, that gives me one RS232 port with control signals and that might be
sufficient. 

I did study the schematics further, and noticed that the rx and tx pins for
UART2 seems to double as rts and cts for UART1 (the pins called nRTS1/TXD2
and nCTS1/RXD2). That might indicate that the UARTs can be configured as
two ports, both with control signals, rather than one port with control
signals and two without. Section 11, UART, in the S3C2440 datasheet doesn't
mention anything specific about this, except that the modem control lines
are available for UART0 and 1, nothing about how to configure UART2 as
control signals for UART1. (Or rather, i haven't been able to spot it. It's
likely in there somewhere). I've also had a look at the source files in the
BSP, but i find it difficult to locate the place where the mode for the
UARTs are set. It would be nice to be able to select between those two
configurations. Any ideas?

I also noticed that the BSP includes driver stuff for pc cards, i.e.
pcmcia. I wonder if it's possible to connect a PCMCIA socket to the
mini2440 in such a way that it'll be supported by this driver?

Thanks again.

Brgds,
gch