Search found 3 matches

by wirehead
Wed Feb 08, 2012 6:14 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: MOU-220 problem early in boot
Replies: 6
Views: 4238

Thanks for the quick replies. I seem to have this working now. At least on redhat-based distributions, this is what it took, early in rc.sysinit, to get the screen talking to me: if [ ! -e /dev/ttyUSB0 ]; then /bin/mknod --mode=660 /dev/ttyUSB0 c 188 0 if [ "$?" -eq "0" ]; then echo "Successfully cr...
by wirehead
Wed Feb 08, 2012 1:54 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: MOU-220 problem early in boot
Replies: 6
Views: 4238

Hrm... I've been looking, and I can't find any information on setting up a USB port this way. I thought that USB connections were all auto-negotiated? The LCD works fine once the system is fully booted, so there must be some kind of initialization happening, but I can't find anything in udev or the ...
by wirehead
Thu Feb 02, 2012 3:14 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: MOU-220 problem early in boot
Replies: 6
Views: 4238

MOU-220 problem early in boot

Hi, folks - I'm trying to write some text out to this device via the /dev/ttyUSB0 path very early in the boot process of a CentOS Linux system that it's connected to. I can access the device file, and if I echo some text out to it, it DOES affect the display - but the characters are just gibberish. ...