[Gumstix-users] Alternative port functions

[<ad...@so...>]

Firstly thank you to everyone who has helped me over the past week and a
bit, I reeally appreciate it. I had not configured the fuses correctly and
this way why the Roboaudiostix was not work correctly. Everything is
running now and my servo code works which is good.

I must ask though, I have servos running through 1A and 3A. The servos run
fine through 1A, but am having trouble setting 3A to work. I realise that
this is because of its alternative port functions but could anyone help by
telling me how to overide the signal for the alternative function so I can
use use it for Servo control.

Kind Regards,

Alex



Quoting ad...@so...:

> As always, thank you very much for all of your the help! :-D
>
> Just making sure, so I don't damage the device - can I program the
> robostix
> fuses using uisp via gumstix? I connect to console via the FFUART line.
>
> Thank you
>
> Alex
>
>
>
> Quoting Dave Hylands <dhy...@gm...>:
>
> > HI Alex,
> >
> > > 1) The Blue LED on the WifiStix - when it flashes periodically, is
> this
> > > because is it sending/receiving data or is this LED controlled by the
> > > Roboaudiostix when using the Flash-LED.hex file?
> >
> > The roboaudiostix doesn't control any LEDs that aren't on the
> > roboaudiostix board.
> >
> > > 2) Is there a command to see what file is on the flash of the
> Robostix?
> >
> > You can read the contents of the flash, but the name of the file that
> > was used to program said flash doesn't get printed anywhere.
> >
> > > 3) Can you put mutiple hex files on the robostix to be run at once or
> > does
> > > it have to be a single hex file? If you can have multiple, how many?
> >
> > uisp will allow you to download exactly one hex. Loading a second file
> > requires that the first one be erased (which is what the --erase
> > option does).
> >
> > > 4) I have worked out from the examples what the code is to set up the
> > printf
> > > statements on the Roboaudiostix to go to the UART-0 line. I still
> have
> > the
> > > jumpers on from programming (via uisp) the roboaudiostix. I have
> > compiled
> > > serial-log program and added it to the bin directory on the gumstix.
> It
> > > executes but has never displayed any print statements. Am I doing
> this
> > > correctly? If I can get the print statements working I think I can
> > figure
> > > out where my code for the servos is breaking down.
> > >
> > > 5) With the Flash-LED.hex file, what LEDs does it flash (ie where are
> > they
> > > located)?
> >
> > There are 3 LEDs in a row, on the short edge of the board opposite
> > from the Hirose connector.
> >
> > If you're LEDs aren't flashing when running FlashLED then you probably
> > forgot to program the fuses. If you don't program the fuses, then
> > everything runs at 1/16 of the speed and numerous features of the
> > ATMega128 are disabled.
> >
> > Running at the wrong speed could also explain why you're not seeing
> > anything on the serial port.
> >
> > > 6) How can I check to see if the Roboaudiostix is actually running a
> > > program? Apart from using print statements.
> >
> > I use the LED flashing technique, and print statements. I normally
> > have my program print a banner which identifies itself, so I can tell
> > which program was the last program I programmed into the flash.
> >
> > --
> > Dave Hylands
> > Vancouver, BC, Canada
> > http://www.DaveHylands.com/
> >
> >
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