CMSIS 6.0.0
__IOM uint8_t IPR[240U]; /*!< Offset: 0x300 (R/W) Interrupt Priority Register (8Bit wide) */
CMSIS 5.9.0
__IOM uint8_t IP[240U]; /*!< Offset: 0x300 (R/W) Interrupt Priority Register (8Bit wide) */
it messes up the DFPs..
Which DFP does not work with CMSIS 6? The C source and header files in DFPs should use the inline functions (e.g. __NVIC_SetPriority) rather than the direct register name. I quickly searched over my installed DFPs and none of them used the IP register.