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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.

What do the LEDs on Red Probe+ mean?

USB

This LED indicates that the probe has been connected to a powered USB bus back to the host PC.

SWD

Cortex-M based systems can typically be debugged via either JTAG or SWD (though some MCUs only offer SWD). Standard behavior is for the MCU itself to default to JTAG for a debug connection and the debug tools have to send an explicit sequence to the JTAG state machine in order to switch over. This LED indicates that SWD is being used for the current connection.

For more details of how to configure the tools to use JTAG (rather SWD, which the Code Red IDE will normally use by default for most MCUs) see the FAQ Connecting to a JTAG target.

TARGET

This LED indicates that at the point that the Red Probe+ is first powered (or the board it is connected to is first powered) that a target board has been detected. This is done by looking for VTREF from the target. Note that if you remove power from the target, the LED will persist in the on position if the debugger has accessed the probe.

RedProbeLeds (last edited 2012-05-03 09:37:07 by CrSupportAb)