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Configure System Clock STM32F0XX

Question asked by Lungma.Colmo on Mar 27, 2017
Latest reply on Mar 27, 2017 by Clive One

Dear All. I'm using STM32F051 with 12 MHz crystal. but my serial communication ran 1.5X faster then i set.I think i need to configure HSE. i have editted ->  #define HSE_VALUE    ((uint32_t)12000000) but still doesn't work.