Re: FW: 24-pin verdex connector and GPIO problem

>  I am using the 24-pin connector on my verdex board for GPIO.  I only
>  need to set a few lines high or low to activate/deactivate some fiber
>  optic switches.  After my verdex boots up (OE build), and I run my
>  application, I send a command to the GPIO to set the switches low:  I
>  write to /proc/gpio/GPIO88 and send "GPIO out clear".  The problem
>  arises the first time the app tries to set the line high ("GPIO out
>  set") - the output flickers, or quickly toggles, and my fiber optic
>  switches don't like that.  I hooked up the serial port ttyS0 on the
>  verdex to hyperterminal on another laptop, and it get's the following
>  messages while the GPIO line is flickering:
>
>
>  usb 1-1: device descriptor read/64, error -62
>  usb 1-1: device descriptor read/64, error -62
>  usb 1-1: new low speed USB device using pxa27x-ohci and address 4
>  usb 1-1: device descriptor read/64, error -62
>  usb 1-1: device descriptor read/64, error -62
>  usb 1-1: new low speed USB device using pxa27x-ohci and address 5
>  usb 1-1: device not accepting address 5, error -62
>  usb 1-1: new low speed USB device using pxa27x-ohci and address 6
>  usb 1-1: device not accepting address 6, error -62
>
>
>  After this initial reaction, the GPIO line can be set and cleared
>  without any further trouble.  The GPIO line I am using is GPIO88, which
>  is incidentally the USBH_PWR1 signal on the 24-pin connector.  Is there
>  anyway to disable the verdex from wanting to look for a usb device on
>  the 24-pin connector?  I am using the other USB connector for a keypad
>  matrix, so I don't want to disable USB altogether, just for the 24-pin
>  connector.  Any ideas?