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I can't get data off my ARM LPC2378 microcontroller - does it need UART or can any GPIO be used?

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closed as unclear what you're asking by Matt Young, placeholder, Nick Alexeev, Phil Frost, jippie Aug 17 '13 at 21:42

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

Could you provide some more info? Where do you want to get the info too? Those processes have lots of interfaces; Ethernet, CAN, UART, SPI, GPIO. JTAG could be used if it's only for development. You could use any of these. – Clint Lawrence Dec 2 '09 at 0:39
up vote 5 down vote accepted

You need a level converter to actually use the UART (connecting to a PC, for example).

Check out this schematic Keil eval board

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If you're talking about connecting the processor's UART to a PC's serial port, you can now get USB to RS232/TTL converters. One end goes into your PC's USB socket, and appears as a normal serial port; the other comes out to 5 V or 3.3 V signals that can be connected directly to your processor, with no level-shifting required.

We've used TTL-232R-3V3 from FDTI Chip, which works perfectly for this kind of application.

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