Sorry to bother you again but I’m slightly confused now.  The diagram on http://www.gumstix.org/tikiwiki/tiki-index.php?page=I/O shows pin 4 being offset to the right when 3 pins are at the top and 2 pins are on the bottom…This is not the case for me.  My pin 4 is offset to the left.  So basically from the diagram my pin 4 is nearer my pin 5.  I do not get a signal on pin 5 I get it on pin 1 and pin 3.  Does this mean the cable could be faulty not the STUART?

 

Dave

 

 


From: gumstix-users-admin@lists.sourceforge.net [mailto:gumstix-users-admin@lists.sourceforge.net] On Behalf Of Craig Hughes
Sent: 07 February 2006 22:27
To: gumstix-users@lists.sourceforge.net
Subject: Re: [Gumstix-users] New Gumstix Stuck at GUM> prompt

 

The pinout on the cable is at http://www.gumstix.org/tikiwiki/tiki-index.php?page=I/O

 

The pin you need to check is pin 5 on the minidin connector, which is middle row, on the right as you look at it.  If that pin has voltage (either -ve or +ve) relative to the middle pin (pin 4), then the problem is 90% likely on the STUART board.  Don't bother trying to figure out where the problem is on the STUART, we'll just ship you a new one.  I can't find you in our customer DB though -- let me know who the original customer was in the next hour and a half, or the order number and we'll send one off today.

 

C

 

On Feb 7, 2006, at 2:15 PM, David Scanlan wrote:



OK I’ve had a multimeter on the cable which is attached to my host…I have found 2 pins (one with +9ish V and one with -9ish V).  Im not entirely sure which pins I should be checking though as I couldn’t tell from the schematic on http://www.gumstix.org/tikiwiki/tiki-index.php?page=UART_Schematics .  I’m guessing this means the cable is ok…is there anything I can do to try and test the STUART board?