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10 years, 10 months ago.
mbed mounts directly, but not over Application Board
Hi,
I have a NXP LPC1768 sitting on the mbed Application Board. Normally I use the USB connector on the AppBoard to power and update the mbed from an iMac with OS X 10.7.5. I accidentally disconnected it without ejecting the mbed drive and got the generic warning message from the OS. Since then, the USB connector on the AppBoard does only give me power, but the mbed drive doesn't mount anymore. However, when I connect USB to the connector on the LPC itself, then the drive mounts as it should. Any hints what has happened and how I can fix that? Resetting both iMac and mbed didn't help.
Boris
2 Answers
10 years, 10 months ago.
Unless you run a specific program to mount the mbed via the USB connector of the AppBoard, you have never been able to do that. That USB connector goes to the LPC1768, while the one of the mbed itself goes to the interface chip.
10 years, 10 months ago.
Thanks for that. While it's curious as this is exactly what I had done ever since I got my kit, I can see how the AppBoard connector is only meant as power supply. That gives me at least some peace of mind that I haven't killed the hardware...
It isn't exactly only for power: It connects to the LPC1768 USB pins. So if you for example have code running to emulate a USB mass storage device you have to use that connector (http://mbed.org/handbook/USBMSD)
posted by 22 Jun 2013