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stm32f4_extenal_clock

Question asked by roozitalab.alireza on Jun 29, 2015
Latest reply on Jun 30, 2015 by roozitalab.alireza
hello every one
i use stm32f429 micro controller and use external 8mhz oscillator as external clock src. and connect output frq of the oscillator to osc_in pin  and osc_out is floating.
every thing work correctly i use ltdc , eth , can , ... but i have problem with usart baud rate , it dose not work  correctly if i change clock src to hsi (in system_stm32f4xx.c) it worked correctly too  but if i use hse as clock src it dose not work. like baud rate has config problem . i check system clock by mco1 pin and its 180mhz (with hse config)

 

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