On 21 sep 2008, at 18:54, Steve Hobbs wrote: > OK, here's what I've found so far. > > 1. The ftdi_sio driver is included in the generic 8.04 kernel and the > Arduino attaches to port /dev/ttyUSB0 as expected. > > 1.1. Both GtkTerm and the Python serial library can then communicate > with the Arduino (I programmed it to act like a serial loopback) > so the driver appears to be working correctly. > > 1.2. The Arduino IDE still fails to connect to the board, firing a > Java > exception: > gnu.io.UnsupportedCommOperationException: Invalid Parameter
I only found 2 threads on the arduino about this. I am not sure they will be of any help. > > This seems to be an Arduino problem that I'll pursue elsewhere > (Thanks for your comments Dirk: I'm sure I have the right port and > I've tried replacing librtx-java with no effect). > Meanwhile, I can program the Arduino from a Windows XP machine. > > 1.3 I haven't yet finished testing whether I can get the Arduino > talking to the EMC2 sim since I need to hack around with my > config to do so. Jeff's comments and my own tests with Python > imply that it should work. > > 2. The ftdi_sio driver is missing from the 8.04 rtai kernel, so the > Arduino fails to attach to a port > > 2.1 Since there's no port attached, neither GtkTerm nor Python can > talk > to the Arduino. > > 2.2 I tried using the generic USB serial driver as per instruction on > the RepRap forum. (http://forums.reprap.org/read.php?12,4546) > The Arduino does bind to a port but generates a constant stream of > garbage input in GtkTerm and Python. > Ok, if you really want to try it. Why not use the serial pins 0 and 1 from the deicimila? You need something in between like a max232 to get the voltage levels from and to rs232<>TTL. > 3. I conclude I need the ftdi_sio driver for the 8.04 rtai kernel. > (I suspect anyone else trying to use the Arduino Diecimila will > also). > > 3.1 I tried to follow Jeff's instructions to build the kernel with > the driver included, but came off the rails at step 3 with: > dpkg-src: command not found > > 3.2 I tried unpacking the source manually and building from it but > hit many errors so I was evidently missing some magic! > > So please can someone advise how to complete the build process. I'd > like > to know how to build this driver module myself, but if someone has it > built already I'd be glad to give it a try. > Again, I only know ubuntu from emc2. But I have been using debian for years. If you are lucky you can use the debian way of compiling kernels. This will solve dependency's too. Try: apt-get install kernel- kpkg" this will install all stuff needed to compile your own kernel in a nice .deb package. Follow this guide: http://www.howtoforge.com/kernel_compilation_debian_etch You need some more packages to do a "make menuconfig", just follow the instructions from the howto. > And a final dumb question so you can be sure how little I know: I > can't > simply use the ftdi_sio.ko from the generic kernel with the rtai > kernel, > can I? I was thinking the same thing. Trying doesn't hurt. As long as you are not machining anything at the same moment. Go to "/lib/modules/name of generic kernel" and look for the ftdi module. (find * -name *ftdi* ) Insert it with insmod. I am trying to to compile a kernel with ubuntu, but this is on a mac with parallels. Dirk ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
