Kenji Arai
This program will kill your mbed LPC1114FN28. Don't set dp23 as DigitalOut!! Don't run this program.
You can see a source program for your reference.
But please do not run this program in your mbed board!!
Don't set dp23(nR) pin as DigitalOut!!!
Please also refer following Note.
http://developer.mbed.org/users/kenjiArai/notebook/lpc1114fn28---suggestion-for-improvement/#