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Debugging BLINKY

Debug the BLINKY example program following this procedure. The debugged program is ready for the serial output check.

Start/Stop Debug ButtonUse the Start/Stop Debug Session toolbar button or the µVision command Debug — Start/Stop Debug Session to connect the debugger to the Keil ULINK Adapter. The CPU stops and connects to the Embedded ICE of the LPC23xx device. For details on the debugging features, refer to the µVision User's Guide.


  • Debugging the BLINKY program using the µVision Debugger requires a ULINK USB-JTAG adapter.

The Peripherals menu allows you to open different dialogs for Peripheral units on the LPC23xx devices. You may view and/or change the state and configuration of on-chip peripherals using these dialogs. For example:

The GPIO 1 dialog reflects the status of the I/O ports.

GPIO Port 1 Simulation Dialog

The Phase Locked Loop (PLL) dialog shows the core clock configuration of the LPC2000 device.

PLL Simulation Dialog

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