Hi, I've often run into difficulties with USB-based serial adapters, to the point where I've given up on them for all but the most trivial things.
If you're able to find something with an onboard serial port, or failing that get a card-based port, you'll be likely to save a lot of headaches. Another thing I've run into, some serial ports only seem to work properly after they've been initially set up. I had one system a while back where it would not see the serial port upon boot until I opened up a terminal prompt and gave it the setup: stty -F /dev/ttyS0 9600 Of course, replace the S0 and the 9600 with the port number and baud rate you are using. What I ended up doing on that computer is I put the command into a script which runs upon boot, that solved the issue. You could potentially put this into the Rivendell daemon init script, trigger the serial port before starting up the rest of the daemons. I don't know if this might help to fix the problem mentioned below where rdadmin needs to be opened up first to diable and re-enable the serial port, but it might be worth a try. > > > Interesting. I wonder if that's the same issue with my Syba serial card. > I haven't been able to get my touchscreen going. It outputs a few seconds > of data then just stops. Won't work again until after a reboot but then > gives the same results. > > -- brandon sossamon > > I wanted to finally follow up on the serial port problem. I intended to > update this sooner, but I've had a lot going on. We are fully on the new > system now, so here it is... > > There were actually a couple of separate issues going on which made it > difficult to figure out exactly where the problem was. > > First, the Rosewill RC-301 PCI serial card just doesn't want to work with > CentOS 6.4. I tried a handful of things and never could get any activity > out of it. The specs claim Linux support, but I never had any luck. > > Secondly, I mistakenly set up my switcher in Rivendell as a BroadcastTools > 8X2, which is not the same thing as a BroadcastTools 8.2. This explains why > when I dropped in a known compatible card, the SIIG CyberPro S4, I saw > serial data coming out of the card, but I couldn't get Rivendell to > actually change channels. > > Thirdly, there does appear to be some kind of bug in the Appliance v2 > involving serial ports. Even now, on Rivendell 2.8.0, when I reboot the new > system, the serial ports don't work at first. They seem to not be enabled > or connected in Rivendell. This problem is remedied by opening up RDAdmin > and disabling each needed serial port and then re-enabling it. > > Finally, if anyone is looking for a USB to serial adapter that works with > the Appliance, I can recommend this Manhattan model from Amazon, which is > currently available for a little over $8: > http://www.amazon.com/Manhattan-Serial-Converter- > Connects-205146/dp/B0007OWNYA/ref=sr_1_1?ie=UTF8&qid= > 1389719503&sr=8-1&keywords=usb+to+serial > . > > Thanks for everyone for trying to help; I'm glad to have this behind me. > > Ryan<hr>_______________________________________________ > Rivendell-dev mailing list > [email protected] > http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev _______________________________________________ Rivendell-dev mailing list [email protected] http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
