Appendix; Trouble Shooting - Fujitsu MB904 Series Application Note

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5 Appendix

The debugger starts with a message as: Communication error ...

Please check that the target is connected to the emulator system and the emulator and

target system is powered-on.

Check that in the emulator set-up (chapter 4.1) the topic "Select automatic emulator

firmware download" is selected.

Check the DIP-switch and jumper settings for the crystal area (chapter 2.2.2).

If working via USB please ensure that the USB drivers provided on the Softune

Workbench CD-ROM has been installed correctly. Alternately a RS232 communication

could be used first to prove that the other hardware settings of the emulator system have

been done correctly.

5.2 Monitoring

Unfortunately the Low-Cost Emulator MB2147-05 does not support 'online'-monitoring of

variables, memory, registers, etc. The watch-window will only be updated while the emulator

is stopped e.g. by a breakpoint.

As a workaround 'monitoring' can be emulated as follows:

Within your application use a timer function with IRQ handler (e.g. ReloadTimer).

In the IRQ handler just reset the IRQ flag.

Set a breakpoint into the Timer IRQ handler.

MCU-AN-390077-E-V11

Chapter 5 Appendix

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