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KSDK2.1 FLASH_xxxxOnce and DMA

Question asked by manfredschnell on Jan 20, 2017
Latest reply on Feb 6, 2017 by manfredschnell



we use KSDK2.1 with K64 and IAR Workbench.


In our Software we use the functions FLASH_ProgramOnce() and FLASH_ReadOnce() to store and read the MAC and serial number of our device.

The software uses several DMA Services (ADC, I2S, 2x SPI).


When I call one of the functions FLASH_ProgramOnce() or FLASH_ReadOnce() while a DMA access to Memory is active, my System stops at 0xfffffffe <unknown handler>.


It seems to conflict reading from one-time Memory with Software while using DMA with Flash-Memory at the same time.


Can someone tell me something about that correlation?

How can I avoid this situation?


Best regards