All, Alright. I finally get it. Sorry for being the slow kid on the block. I can finally see activity on ttyUSB2. I didn't understand that 4 USB ports meant 4 virtual ports across a single physical port (thanks to Jack and Matt for clearing that up).
Again, thank you all very much for all the help. Richard Black On Wed, Feb 12, 2014 at 2:05 PM, Jack Hickish <[email protected]> wrote: > The FTDI chip will show up as four serial devices -- the third is the > one you want. (eg. on my system it's ttyUSB2). The serial settings are > summarised here (https://casper.berkeley.edu/wiki/ROACH_NFS_guide)-- > basically 115200 bps, 8N1, no hardware flow control. > > On 12 February 2014 20:58, Richard Black <[email protected]> wrote: > > 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 > >> > > >> > > > > > >
