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Hi.
I am just starting to learn and introduce myself in ARM world.
I have an Olimex OKI H5003 and a KEIL ULINK-ME, and i am working with Keil MDK 4.20
I have started from a blinky project which i had to modify because it was made for a 7 segmetns display, and this board has only an status led.
Any way, i did it, and it works perfectly if i supply it with the USB cable in my laptop.
The problem exists when i want to debug it, just to work a bit with the functionality.
I disconnect the USB supply cable, and connect the Ulink Me, it energices the device too, but doesnt allow free running, it is stoped. I start the debugging mode, and select Run. Then the status led never blinks, contrary to the normal behavior.
I click stop then and it stops in an exception: Undef_Handler B Undef_Handler
If i try to go there step by step, i can never reach it, and sometimes after doing this and run it stops in : DAbt_Handler B DAbt_Handler
A different exception. Which is too wear.
I am using the system counter. and an external interrupt for a button which does nothing yet. And again. It works if i leave the ulink-me disconnected.
Does somebody have a clue ?