Hello I am using the STM32F411E-Discovery board, selecting the HSE ceramic resonator, which is installed on the board as 8.000 Mhz Crystal, as clock source for a 1 sec interrupt with TIM2. I am using STM32CubeMx BUT INSTEAD OF HAVING 1 SECOND INTERRUPT, IT IS 5 OR 6 TIMES SLOWER, not sure why, with or without PLL. If I use the HSI +PLL everything works fine, but I would like to use the Crystal instead.
