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I am using a STM32F207IG microcontroller, a SPI NOR Flash (M25P16) with Keil::MDK-Middleware File System v6.9.8 and EFS.
Init, Mounting and formatting works. Even "finfo()" works an delivers information about FS and overall flash size of 16MB and also "ffree()" return the free space on drive.
But when I try to create a file with "fopen()" and no return (e.g. the trace say running but the system is halt).
What can be? What can I do?