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Hello,
thanks a lot for your ideas...
I have solved the problem!
It was my fault...
The problem was a Stack Overflow within the Task wich writes to the flash memory. This overflow accours only, if the flash-write will be executed and if a interrupt context places it's data on the stack of this tasks either. In this case the stack usage increases from about 36% to overflow on a 22 kByte Stack!!
It is possible to use the flush-driver on a multythreaded enviroment as long as only one task is accessing the flash-device. I think that this is what Altera means with the parameter "thread safe: no"
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Great news! I'm glad you sorted it out. Cheers.
Honored Contributor
