Dear Wolfgang Denk, Thank you very much for the reply. I connected +9V to RTS and DTR lines. Then I tried cat some txt file to /dev/ttyS0 to enable Tx line.
The serial mouse is working now. Regards, Nageswari -----Original Message----- From: Wolfgang Denk To: Nageswari S Cc: LinuxPPC Sent: 6/19/02 8:51 PM Subject: Re: Serial Mouse Not working Dear Nageswari, in message <4A2BA6A2F12BD511AAFA00606730DE9B0A7170 at BLREXSR> you wrote: > > I am new to Linux environment. I have a serial mouse connected to my custom > PowerPC board. My serial mouse is not working when I conenct it to ttyS0. > But I am able to do PPP and serial file transfer over the same port. Unfortunately you don't provide ANY informatiuon about what sort of hardware you have, or which kernel version tyou are running. > Do I need to enable/configure any settings specifically for the serial mouse > to work? I have link a /dev/mouse to /dev/ttyS0. > > Kindly help me with this.. Well, I can only speculate: maybe your board is based on a MPC8xx or MPC82xx CPU, and your ttyS0 port is connected to one of the SMC interfaces? The SMC's on these systems have no modem control lines, which normally are used to feed the serial mouse with some power. IIRC the RTS and/or DTR lines are used for power sources, so maybe you get it working by connecting +5V to those lines (careful! I'm a programmer, not an electrician - don't blame me when you fry your board :-) Hope this helps, Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de "Security is mostly a superstition. It does not exist in nature... Life is either a daring adventure or nothing." - Helen Keller ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
