8 years, 1 month ago.

USB device not recognized.

I have compiled and transferred bin file of the program USBKeyboard_HelloWorld - main.cpp to the flash memory of Mbed LPC 11u24. I get this error USB device not recognized.

Question relating to:

I am using breadboard and one more connector. I have wired the things as shown in the image. I am using Windows 7. When I connect the device to PC I get the message "USB device not recognized".

posted by Pravin Phule 13 Mar 2013

2 Answers

8 years, 1 month ago.

Did you see that someone answered your question that you posted in a comment a few days ago?

http://mbed.org/comments/cr/93/356/#c5051

If that doesn't answer your question you need to provide more information about how you've wired your USB port up, what OS is running on the computer you're trying to use the USB keyboard on, where you get the error message and anything else that might help someone trying to answer your question.

Accepted Answer
8 years, 1 month ago.

I am using breadboard and one more connector. I have wired the things as shown in the image. I am using Windows 7. When I connect the device to PC I get the message "USB device not recognized".