Missing breaks in switch statement. Fixes Github issue #524
@ -431,8 +431,10 @@ void rcc_set_usbclk_source(enum rcc_osc clk)
switch (clk) {
case PLL:
RCC_CFGR3 |= RCC_CFGR3_USBSW;
break;
case HSI48:
RCC_CFGR3 &= ~RCC_CFGR3_USBSW;
case HSI:
case HSE:
case LSI: