Resolved! Bug in stm32f4xx_hal_rcc.h v1.5.0
Posted on November 18, 2016 at 14:11 #define IS_RCC_PLLQ_VALUE(VALUE) ((4U <= (VALUE)) && ((VALUE) <= 15U)) This line doesn't fit to the RM0390 (page 126): 0000: PLLQ = 0, wrong configuration 0001: PLLQ = 1, wrong configuration 00...