In **STM32Cube FW_L4 V1.13.0**,
the HAL Library's SD driver has a typo in the register macro definitions for the SDMMC's power register.
Specifically in the file `stm32;4s9xx.h`, lines *18127* -> *18141* the HAL library generates:
``` C
/****************** Bit definition for SDMMC_POWER register ******************/
#define SDMMC_POWER_PWRCTRL_Pos (0U)
#define SDMMC_POWER_PWRCTRL_Msk (0x3UL << SDMMC_POWER_PWRCTRL_Pos) /*!< 0x00000003 */
#define SDMMC_POWER_PWRCTRL SDMMC_POWER_PWRCTRL_Msk /*!
#define SDMMC_POWER_PWRCTRL_0 (0x1UL << SDMMC_POWER_PWRCTRL_Pos) /*!< 0x00000001 */
#define SDMMC_POWER_PWRCTRL_1 (0x2UL << SDMMC_POWER_PWRCTRL_Pos) /*!< 0x00000002 */
#define SDMMC_POWER_VSWITCH_Pos (2U)
#define SDMMC_POWER_VSWITCH_Msk (0x1UL << SDMMC_POWER_VSWITCH_Pos) /*!< 0x00000004 */
#define SDMMC_POWER_VSWITCH SDMMC_POWER_VSWITCH_Pos /*!
#define SDMMC_POWER_VSWITCHEN_Pos (3U)
#define SDMMC_POWER_VSWITCHEN_Msk (0x1UL << SDMMC_POWER_VSWITCHEN_Pos) /*!< 0x00000008 */
#define SDMMC_POWER_VSWITCHEN SDMMC_POWER_VSWITCHEN_Pos /*!
#define SDMMC_POWER_DIRPOL_Pos (4U)
#define SDMMC_POWER_DIRPOL_Msk (0x1UL << SDMMC_POWER_DIRPOL_Pos) /*!< 0x00000010 */
#define SDMMC_POWER_DIRPOL SDMMC_POWER_DIRPOL_Pos /*!
```
you need to replace it with
``` C
/****************** Bit definition for SDMMC_POWER register ******************/
#define SDMMC_POWER_PWRCTRL_Pos (0U)
#define SDMMC_POWER_PWRCTRL_Msk (0x3UL << SDMMC_POWER_PWRCTRL_Pos) /*!< 0x00000003 */
#define SDMMC_POWER_PWRCTRL SDMMC_POWER_PWRCTRL_Msk /*!
#define SDMMC_POWER_PWRCTRL_0 (0x1UL << SDMMC_POWER_PWRCTRL_Pos) /*!< 0x00000001 */
#define SDMMC_POWER_PWRCTRL_1 (0x2UL << SDMMC_POWER_PWRCTRL_Pos) /*!< 0x00000002 */
#define SDMMC_POWER_VSWITCH_Pos (2U)
#define SDMMC_POWER_VSWITCH_Msk (0x1UL << SDMMC_POWER_VSWITCH_Pos) /*!< 0x00000004 */
#define SDMMC_POWER_VSWITCH SDMMC_POWER_VSWITCH_Msk /*!
#define SDMMC_POWER_VSWITCHEN_Pos (3U)
#define SDMMC_POWER_VSWITCHEN_Msk (0x1UL << SDMMC_POWER_VSWITCHEN_Pos) /*!< 0x00000008 */
#define SDMMC_POWER_VSWITCHEN SDMMC_POWER_VSWITCHEN_Msk /*!
#define SDMMC_POWER_DIRPOL_Pos (4U)
#define SDMMC_POWER_DIRPOL_Msk (0x1UL << SDMMC_POWER_DIRPOL_Pos) /*!< 0x00000010 */
#define SDMMC_POWER_DIRPOL SDMMC_POWER_DIRPOL_Msk /*!
```
The main thing to notice is the incorrect definitions `SDMMC_POWER_VSWITCH`, `SDMMC_POWER_VSWITCHEN`, `SDMMC_POWER_DIRPOL` which should
be defined to their respective masks ****_Msk* and not ****_Pos*.
Everytime you regenerate the codebase with CubeMX, you'll need to go back in and fix this typo!
#### Effects of this bug
It breaks the SD driver when using an SD Card level shifter (transceiver). The STM32 won't be able to communicate with the SD Card as it misconfures the power register.
