Reset and clock control (RCC)
#define: RCC_LSEDrive_MediumLow RCC_BDCR_LSEDRV_0
#define: RCC_LSEDrive_MediumHigh RCC_BDCR_LSEDRV_1
#define: RCC_LSEDrive_High RCC_BDCR_LSEDRV
RCC_MCO_Clock_Source
#define: RCC_MCOSource_NoClock ((uint8_t)0x00)
#define: RCC_MCOSource_LSI ((uint8_t)0x02)
#define: RCC_MCOSource_LSE ((uint8_t)0x03)
#define: RCC_MCOSource_SYSCLK ((uint8_t)0x04)
#define: RCC_MCOSource_HSI ((uint8_t)0x05)
#define: RCC_MCOSource_HSE ((uint8_t)0x06)
#define: RCC_MCOSource_PLLCLK_Div2 ((uint8_t)0x07)
RCC_PLL_Clock_Source
#define: RCC_PLLSource_HSI_Div2 RCC_CFGR_PLLSRC_HSI_Div2
#define: RCC_PLLSource_PREDIV1 RCC_CFGR_PLLSRC_PREDIV1