Jack and all, Well, using the *right* connector on the ROACH-2 board (USB-B), I'm able to get the "USB-OK" LED to light up. However, I still see nothing in the minicom terminal (using RHEL 6.5). I earlier read on the mailing list that there were some rule issues with serial communications with RHEL, but it didn't seem to be completely resolved.
I've also noticed something peculiar. If I power-up the ROACH-2 while having minicom open on the PC, the ROACH-2 fault LED lights up and does not turn off until I terminate minicom. Any idea why this might be happening? Thanks all, Richard On Wed, Feb 12, 2014 at 1:37 PM, Jack Hickish <[email protected]> wrote: > Yeah, it's not great naming. "host" and "slave" or something like that > would probably have been better. I'm pretty sure FTDI is just the > brand name for the chip which provides USB to rs232. I didn't know > this, but it seems it stands for future technology devices > international :) > > On 12 February 2014 20:32, Richard Black <[email protected]> wrote: > > Jack, > > > > I've been connecting to the USB-A (the one that is named PPC USB). I > assumed > > that that was the correct port since the PPC was booting up. > > > > I'll try again with the FTDI connector. > > > > For the sake of curiosity, what does FTDI stand for? I haven't been able > to > > find any documentation on the wiki about what it means. > > > > Thanks again, > > > > Richard Black > > > > > > On Wed, Feb 12, 2014 at 1:28 PM, Jack Hickish <[email protected]> > wrote: > >> > >> Hi Richard, > >> > >> There are two USB connectors on the board -- the USB B one is the one > >> which will show up to a PC as a serial device. The USB A one for > >> adding slave devices to the power pc (eg booting a file system from > >> usb) -- are you connecting to the right one? > >> > >> Cheers, > >> Jack > >> > >> On 12 February 2014 20:20, Richard Black <[email protected]> wrote: > >> > Hi all, > >> > > >> > We've been trying to get the serial link between the ROACH-2 and a PC, > >> > and > >> > we haven't had any success at all. > >> > > >> > These are the cable configurations we've tried: > >> > > >> > 1. USB-A Male (ROACH)/USB-A Male (PC) > >> > 2. USB-A Male (ROACH)/USB-Serial Adapter/DB9 Female (PC) > >> > 3. RS232 Pin Headers on-board/DB9 Male Connector/DB9 Female (PC) > >> > > >> > Unfortunately, none of these register any activity on the PC. These > >> > configurations have been tested on the following operating systems: > >> > > >> > 1. RHEL 6.5 > >> > 2. Ubuntu 11.04 > >> > > >> > When I connect the cables up and run dmesg, I see no activity. I've > >> > tried > >> > listening on ttyS#, ttyUSB# for anything and nothing happens in my > >> > minicom > >> > terminal. > >> > > >> > Also, our USB-Serial Adapter has a status LED to indicate that it is > >> > powered > >> > for conversion, but the LED does not light when connected to the > >> > ROACH-2. > >> > This makes me suspicious that the USB connector on the ROACH-2 is not > >> > functioning. > >> > > >> > Has anybody else had a problem with this, or do we unfortunately have > a > >> > couple of faulty ROACH-2 boards? > >> > > >> > Thanks guys, > >> > Richard Black > > > > >
