Re: [uCsimm] Pinouts for serial cable

From: Tom Walsh (tom@cyberiansoftware.com)
Date: Fri May 12 2000 - 17:10:20 EDT


Geoffrey Wossum wrote:

> Terry,
>
> > Looking for the pinouts to hook up the uCsimm to a linux serial port.
> > db9 to db9.
>
> Hook uCsimm pin 12 (RSRXD) to DB9 pin 3, and uCsimm pin 13 (RSTXD) to DB9
> pin 2. And of course DB9 pin 5 to ground.
>
> This'll set the uCsimm up as DCE device, so you can just use a standard
> modem cable (not null-modem).
>
> If you want the uCsimm as a DTE device, reverse the lines. However,
> sounds like you want the uCsimm as a DCE device.
>
> RTS and CTS come out on uCsimm pins 5 and 6, respectively, but I don't
> know if the driver supports hardware handshaking. I imagine it does, but
> I've never tried to use the handshaking.

I don't know about the driver, but you can program the hardware of the MPU to
"automagically" monitor & service the RTS + CTS lines. No need to intervene with
software.

Regards,

TomW

>
>
> ---
> Geoffrey Wossum
> gwossum@acm.org
> Project AKO - http://rover1.uta.edu/~ako
> Internet Imperialists - http://inetimperial.sourceforge.net
> This message resent by the ucsimm@uclinux.com list server http://www.uClinux.com/

--
Tom Walsh - WN3L - Embedded Systems Consultant
'www.openhardware.net', 'www.cyberiansoftware.com'
"Windows? No thanks, I have work to do..."

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