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10 years, 2 months ago.
mbed not running after pulling usb
My mbed runs any program after it is loaded but does not run after I pull the usb cord out. This happened after I accidentally erased the beginning short LED program. Any ideas?
triad
1 Answer
10 years, 2 months ago.
I hate to ask an obvious question, but are you otherwise providing power to the chip? If you're not using USB, you have to provide electricity - typically 5 volts - via hardware pins. Pins 1 & 2 are ground and VIN, respectively, on the LPC1768. On the KL25Z, they're pins 14 & 16, on the J9 I/O header.