Content originally posted in LPCWare by jb111 on Sun Dec 13 20:23:43 MST 2015
Hi,
I am trying to boot from USB0, but am having some difficulty.
My setup is a s follows:
- LPC1837
- LPCXpresso
- Ubuntu 15.04
I am happy with the hardware connections. I have verified that USB0 is working by running the Virtual communication port example. The pins to select the boot mode (P2_9, P2_8, P1_2, P1_1) have been checked to be fine (low, high, low, high respectively.)
When I hold the boot pin(P2_7) low on a reset I can see the micro entering the bootrom (flashing LED stops flashing).
But when I run lsusb or dmesg I dont see anything. My understanding is that the USB should enumerate as a DFU device. Is this correct? Is there anything else I have missed?
Thanks.