easyHID question


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  1. #1
    Join Date
    Jul 2003
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    OK, I'll put a blinky on RA2.
    Give me some time to modify and test.

    In the mean time.

    1. Check the voltage on pin 18 Vusb. It should be ~3.3V.

    2. D+ uses the internal pull-up to signify FULL speed operation. You should see around 2.8-3.3 volts on pin 24. If not, disconnect the USB cable, and check again.

    3. Try plugging another USB device into that USB port on the computer or hub. Make sure the port itself is working.
    DT

  2. #2

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    Quote Originally Posted by Darrel Taylor View Post
    OK, I'll put a blinky on RA2.
    Give me some time to modify and test.
    Thank you
    In the mean time.
    1. Check the voltage on pin 18 Vusb. It should be ~3.3V.
    USB ON MY PIC HAVE TO BE BROKEN!
    There (pin 18) is a voltage that is about 10mV without the cable connected and something over 40mV with cable connected, however that value seems to grow slowly, maybe 10mV in 20sec.

    2. D+ uses the internal pull-up to signify FULL speed operation. You should see around 2.8-3.3 volts on pin 24. If not, disconnect the USB cable, and check again.
    Well, do not see that as could be guessed... it is broken, I can see on pin 24 (D+) something around 100-200mV

    3. Try plugging another USB device into that USB port on the computer or hub. Make sure the port itself is working.
    Yes, all ports work as they should. I can change devices from one port to an other without any problems etc.

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