Gerald Thonigs

writing exception handlers for mcf5485

Discussion created by Gerald Thonigs on Apr 5, 2007
Latest reply on Apr 22, 2007 by Gerald Thonigs
Hi,
 
in order to the on-chip usb controller of an mcf5485 work (with a cml5485 board from axman and CodeWarrior IDE 5.7.0), I need to write a few exception handlers.
 
I set a breakpoint in the asm_exception_handler and tried debugging. When polling the MCF_USB_USBISR register within the main loop, I see that the interrupt fires, but the breakpoint in the exception hanlder isn't reached. But the readme.txt of the project says that the vectors _are_ used with the M5485 UART SRAM Build. Why?
Another breakpoint in asm_set_ipl in the same file is reached.
 
Can anyone tell me a tutorial for integrating new exception handlers?
 
gerry
 

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