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Forum Post: Something wrong with Interaction between SYS/BIOS and interrupts

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I used i2cAccelerometer.c (AM335X_StarterWare_02_00_01_01\examples\evmAM335x\accelerometer) as the basis of a some test code to test out the I2C devices on a new board design. 

It works if I change the code to poll (no interrupts). If I get the I2C interrupt it gets an exception in the HWI code when switching to the ISR stack. Note, I do not have HWI enabled in my .cfg file I have SYS/BIOS, task, timer, error handling. I tried enabling the HWI and that did not work either (same result). 

That being said, this may or may not be related. If I try to enable the Console Uart or call BIOS_Start I get a similar behavior. 

I am wondering what is missing in my configuration. I quite comfortable with the ARM and used the SYS/BIOS before but there must be something I am missing with the new GUI and SYS/BIOS version.

Right now I have a simple power on self test going and then we will start up the tasking.  

Aaron


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