RCC HSE (8.000 Mhz Crystal) STM32F411E-DISCO, Running Slower

[JVela.1]

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.

[Tesla DeLorean]

HSE_VALUE in stm32f4xx_hal_conf.h ??

[JVela.1]

Hello Clive, this is the value:

 #define HSE_VALUE  ((uint32_t)8000000U) /*!< Value of the External oscillator in Hz */

[M.Hajji]

Hello JVela.1

Check UM1842 section 4.10.1 OSC clock supply for solder bridge and resistor configuration.

Output your HSE frequency with MCO and see.

Regards,

Hajji