Thanks for the tip, Harvey. Will try to find one at a local store. Funny thing is, the pl2303 I bought was a cheap knock-off(~2.5$ in India) and I didn't know if the LEDs on it actually worked. As I found out later, there is a green LED on it that lights up during communication. Finally some progress on my BBB!
On Sat, Apr 18, 2015 at 1:50 AM, Harvey White <[email protected]> wrote: > On Thu, 16 Apr 2015 23:33:14 -0700 (PDT), you wrote: > > >Oh, Lord.. I wasted one whole day trying to figure this out. Turns out I > >connected Rx to Rx and Tx to Tx. > > Find an RS-232 LED monitor. You want something that monitors the > state of each line, and shows you a red or green light depending on > the state of the line. I have seen them in 25 pin versions, but you'd > likely want a 9 pin version. > > Connecting that up to each device in turn shows you which line is > drive, and which is not. > > There's DTE (Data Terminal Equipment) and DCE (Data Communications > Equipment) (IIRC), they have different signals on different pins, > since the original idea was that they'd be able to be wired pin to pin > to function. DTE was supposed to be a terminal of some sort, DCE was > the external modem. > > Now that your computer could be both, there's a connection problem. > > Been there, done that. > > Harvey > > > >Thank you, Dale Schaafsma. > > > >On Wednesday, September 11, 2013 at 11:33:36 PM UTC+5:30, Dale Schaafsma > >wrote: > >> > >> You need to connect to J1, not P9...see the SRM (System Reference > Manual) > >> at > >> > http://circuitco.com/support/index.php?title=BeagleBoneBlack#Hardware_Files > >> Make sure cable's RX is connected to BBB's TX and cable's TX is > connected > >> to BBB's RX. > >> -Dale > >> > >> On Tuesday, September 10, 2013 11:10:54 PM UTC-5, cerry wang wrote: > >>> > >>> > >>> I'm new in beaglebone black. I know in original version beaglebone, I > can > >>> get serial debug information just plugging mini usb to pc. But > Beaglebone > >>> black can't. I search from > >>> > http://circuitco.com/support/index.php?title=BeagleBone_Black_Accessories > >>> and try to use Adafruit 4 Pin Cable (PL2303) by plugging green line to > >>> P9-4, white line to P9-5, black line to GND. I use putty trying to get > >>> serial information but I can get only much of disorder and > non-meaningful > >>> characters just like setting wrong baud-rate. But I don't know why I > set > >>> 115200 in putty and it work in original version beaglebone. How can I > get > >>> right serial debug information in Beaglebone Black. Thanks. > >>> > >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/5fTNdHVnqhU/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
