How to configure serial mouse on B7 board

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#1

Hi, I am using kernel version linux-2.6.29-rc3 and u-boot version
2009.03-rc1, I had configured the console on UART3(ttyS2) in u-boot
and kernel, and I want use UART2(ttyS1) as serial mouse port for that
I have enabled the serial mouse in kernel device drivers and build it
but I am confused on which port(means weather UART2 or UART3) the
serial mouse driver will receive the data from the mouse.

I have made all the necessary settings required for the serial mouse
on both ports(UART3 and 2) like
baud rate = 1200bps
data bits = 7
parity bits = none
stop bits = 1

I tried it on both ports but it doesn't worked, can anyone explain me
how to configure the serial mouse on Beagle board B7

Thanks & Regards
Sudheer

#2

2009.03-rc1, I had configured the console on UART3(ttyS2) in u-boot and kernel, and I want use UART2(ttyS1) as serial mouse port for that

The "ttyS2" is a standard RS232 port (the only one where you can plug a serial mouse), but it is generally used as console; to plug a mouse, you will need to disable its console use both in uBoot and in Linux inittab kernel commandline etc.

Note: "ttyS1" is a "TTL 1.8V" one (you will damage it if you plug something having RS232 levels). To take it to RS232 levels, you will need both a level converter (from 1.8V to 5V) and a TTL-to-RS232 adapter (I don't know if a TTL 1.8V to RS232 exists). You will also need to configure the appropriate pins on the expansion connector (the processor has to know which "MUX" has to be enabled to make the extra serial port visible; search for "MUX" settings in your BBSRM - beagleboard system reference manual PDF for your board version B7).

#3

A great solution for getting access to the serial port on the expansion connector is the Zippy Board.

http://www.tincantools.com/product.php?productid=16147&cat=0&page=1&featured

It will also give you an ethernet port, RTC, I2C connector, and a second SD connector.

Gerald

#4

I have seen two different desktops with openembedded images on the beagleboard. One is with the android demo image and the other is with the x11-image. I think the latter is ‘matchbox’ with ‘enlightment’, but I dont know what the android demo is using.

I am trying to understand the configuration of the different window managers and desktops and how I would change from one to the other in a build with bitbake. Perhaps there is a third?

Admiteddly, I am relatively new to bitbake and am feeling my way a bit, but I would appreciate any data on the names of the packages used and where they are controlled and invoked as the images are built. I am also trying to understand the memory footprint of the window manager options for the beagleboard as I try to get my mind around a system design.

Charles

#5

You mean angstrom images.