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STM32F407VGT6 external oscillator

Question asked by tuncer.erdinc on Jul 19, 2016
Latest reply on Jul 19, 2016 by Nesrine M
Hi everyone,

I have designed a board using stm32f407vgt6 and placed a 8MHz crystal oscillator with 22pF capacitors. The code I wrote works perfectly with stm32f4discovery. But when I try to use my board, it can't initialize external oscillator and use  16 MHz internal oscillator.

I can't find the problem and want to know if it may be about pcb design or the components.

Thanks in advance.