#if defined(STM32L0)
    #define USB_EPBASE      0x40005C00
    #define USB_REGBASE     0x40005C40
    #define USB_CNTR        0x00
    #define USB_ISTR        0x04
    #define USB_FNR         0x08
    #define USB_DADDR       0x0C
    #define USB_BTABLE      0x10
    #define USB_BCDR        0x18
    #define USB_PMABASE     0x40006000

    #define RCC_BASE        0x40021000
    #define RCC_APB1RSTR    0x28
    #define RCC_APB1ENR     0x38


    #define UID_BASE        0x1FF80050






#elif defined(STM32L1)
/* common definitions for STM31L100xx STM32L151xx STM32L152xx STM32L162xx */
    #define USB_EPBASE      0x40005C00
    #define USB_REGBASE     0x40005C40
    #define USB_CNTR        0x00
    #define USB_ISTR        0x04
    #define USB_FNR         0x08
    #define USB_DADDR       0x0C
    #define USB_BTABLE      0x10
    #define USB_PMABASE     0x40006000

    #define SYSCFG_BASE     0x40010000
    #define SYSCFG_PMC      0x04

    #define RCC_BASE        0x40023800
    #define RCC_APB1ENR     0x24
    #define RCC_APB1RSTR    0x18
    #define RCC_APB2ENR     0x20


    #if defined(STM32L100xB) || defined(STM32L100xBA) || \
        defined(STM32L151xB) || defined(STM32L151xBA)
    /* Cat.1 and Cat.2 devices */
    #define UID_BASE        0x1FF80050
    #else
    #define UID_BASE        0x1FF800D0
    #endif

#else
    #error Unsupported MCU

#endif