HSE configuration

Lines 22 to 23 in edc9347

    
           RCC->CFGR |= RCC_CFGR_PPRE1_DIV4; 
        
           RCC->CFGR |= RCC_CFGR_PPRE1_DIV2;

Check the propriety of these two lines (changed the same register two times). Probably one of the APB bus was clocked by wrong speed.

	RCC->CFGR \|= RCC_CFGR_PPRE1_DIV4;
	RCC->CFGR \|= RCC_CFGR_PPRE1_DIV2;