Dear all, For future reference: Anyone using a metal notebook to connect to serial you might encounter issues with a floating ground. Make sure you disconnect your laptop from the power supply to avoid an additional ground.
At least now I can see the count down timer and transmit data (indicated by an LED tied to the transmit line). The roach is still ignoring my key presses after the "Hit any key" message. I have tried "CR +LR", "CR" and "LR" enter key emulation modes, but it didn't show any difference. Is there a custom carriage return which must be sent for this to work? Thanks. Kind regards, Norbert On 2 December 2014 at 19:05, Norbert Bonnici <[email protected]> wrote: > Hi David, > > The problem is that I don't see the counter anymore and any command I > give the roach such as run bit, run sailboat etc are ignored or at > least no feedback is receive after the "Hit any key" message now. > > U boot is running using bootstrap option C. Should it be H? The dip > switches are currently all in the off position. I have also tried > different combinations of the dip switches such as bootstrap option B > (slow mode) > > I will try to use a different USB to serial adapter maybe mine is > faulty or something weird is happening. > > Kind regards, > Norbert > > On 2 December 2014 at 18:07, David MacMahon <[email protected]> wrote: >> Hi, Norbert, >> >> If you hit any key to stop autoboot when it says "Hit any key to stop >> autoboot", does it in fact stop the autoboot? If so, you could use u-boot's >> "printenv" command to see what commands get run as part of autoboot and then >> try to run them "by hand" to try to figure out where things go bad. >> >> HTH, >> Dave >> >> On Dec 2, 2014, at 12:16 AM, Norbert Bonnici wrote: >> >>> Hi Marc, >>> >>> The USB dongle's baud rate should have been set properly. When set to >>> different baud rates no readable data is received through the serial >>> port. Added line wrapping but it didn't change anything. >>> >>> In addition, recently the communications are being disabled when the >>> GND wire is connected to the USB dongle. Data is only being received >>> when only the tx and rx wires are connected. >>> >>> Regards, >>> Norbert >>> >>> On 2 December 2014 at 08:39, Marc Welz <[email protected]> wrote: >>>> >>>> >>>> On Mon, Dec 1, 2014 at 2:47 PM, Norbert Bonnici >>>> <[email protected]> wrote: >>>>> >>>>> Dear Marc, >>>>> >>>>> I've have tried all the possible CR+LF combinations. >>>> >>>> >>>>> >>>>> Any ideas? >>>> >>>> >>>> Then I am not sure - I know that some USB dongles attempt to autodetect the >>>> serial >>>> speed - maybe something is going wrong there ? Also, maybe enable line >>>> wrapping (Control-A W) might help. >>>> >>>> BTW: CC'ing the mailing list is good form - it helps others who might have >>>> the same problem, and you might also get suggestions from other people >>>> >>>> regards >>>> >>>> marc >>>> >>>> >>> >> >>
