Hi,
You can install LPCXpresso from http://www.nxp.com/products/software-and-tools/software-development-tools/software-tools/lpc-microco...
After install LPCXpresso, the LPCOpen packages for supported board(s)/device(s) can be found at the path:
<install_path>\lpcxpresso\Examples\LPCOpen > this directory contains a number of LPCOpen software bundles for use with the LPCXpresso IDE and a variety of development boards.
For LPC11u24 you need to select the LPC11u14.
I hope this helps,
Have a great day,
Sol
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