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Important Information for users of NXP LPCXpresso

This site is for users of Code Red branded products.

NXP LPCXpresso users should visit the LPCXpresso FAQ's for up-to-date information relevant to that product.

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Connecting to a JTAG target

When connecting to a Cortex-M part, by default, the debugger will attempt to connect using SWD. If you need to connect via JTAG, then you must make a debugger configuration change as follows:

The debugger will now connect using JTAG instead of SWD.

The first time that you connect to a target over JTAG, a pop up dialog will appear for you to select which device on the JTAG scan chain to connect to. For more details see the FAQ "Multiple devices on a JTAG scan chain.


Some Cortex-M based MCU's only support debugging via SWD, and not via JTAG. Please check the documentation for the MCU that you are using for more information.