Use of an external debugger

An external debugger can be:

•a JTAG debugger, which connects to a 20-pin P3 connector

•a development tool supporting JTAG debugging and ETM (on-chip trace), which connects to a 38-pin Mictor P2 connector

Setting up a debug environment for the first time

•Verify jumpers J15-J20 (see Jumpers description for their default position)

•Verify that jumper J8 is set

•Verify that jumper J7 is set if your development tool connects to P2

•Verify that jumper J9 is set in position 2-3 (on-board integrated debugger disabled)

•winIDEA 2006 application must to be installed and run once in order to power the ITLPC2138 board through the USB connection.

•Connect the USB cable to the PC and to the ITLPC2138.

•Windows should auto-detect a new USB device and install belonging USB driver. In case of any problems, the driver is located under winIDEA install directory (e.g. c:\winIDEA\2006\USBDrv).

•Disconnect the USB cable from the ITLPC2138 and then connect it again. The two power LEDs should turn on. The target board is not powered if the LEDs don’t lit and the problem needs to be resolved before proceeding to the next step!

•Disconnect the USB cable from the ITLPC2138 once again, connect the external development system to P2 or P3 (depending on the development system), turn it on and then connect back the USB cable.

•Execute a debug command equivalent to the CPU reset debug command. This should initialize the development system and the user should be able to write to the internal CPU RAM through the memory window. The development system should be now ready for use.

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