USB is not getting detected

muralij21 · ‎2010-10-06

Posted on October 06, 2010 at 09:22

xacc · ‎2011-05-17

Posted on May 17, 2011 at 14:10

Make sure you have the pullup on the data pins turned on (depending on USB speed, this will be on different lines).

hli · ‎2011-05-17

Posted on May 17, 2011 at 14:10

Hello,

If you mean no detection at all, try the resistor but once it is detected but not recognized, please have a look on the USB PLL clock.

Regards

muralij21 · ‎2011-05-17

Posted on May 17, 2011 at 14:10

greg_t · ‎2011-05-17

Posted on May 17, 2011 at 14:10

you need pull up on your D+ line

muralij21 · ‎2011-05-17

Posted on May 17, 2011 at 14:10

I connected the pull up resistor of 1.5k from D+ to VSSA. I got a warning msg ''One of the USB devices attached to this computer has malfunctioned and windows does not recognise it''

muralij21 · ‎2011-05-17

Posted on May 17, 2011 at 14:10

I tried it but still i am getting the same error. Any other suggestions..? please

xacc · ‎2011-05-17

Posted on May 17, 2011 at 14:10

VSSA is Analog Ground. It need 3.3V for a pullup.

You should connect it to a GPIO pin that you can toggle.