QSPI寄存器学习总结

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寄存器配置

IfxQspi_reg.h文件定义了WSPI各寄存器的起始地址。IfxQspi_regdef.h文件定义寄存器的结构体。各寄存器分配的地址和数据手册中一致。

typedef volatile struct _Ifx_QSPI
{
    Ifx_QSPI_CLC        CLC;                /**< \brief 0, Clock Control Register */
    Ifx_QSPI_PISEL      PISEL;              /**< \brief 4, Port Input Select Register */
    Ifx_QSPI_ID         ID;                 /**< \brief 8, Module Identification Register */
    unsigned char       reserved_C[4];      /**< \brief C, \internal Reserved */
    Ifx_QSPI_GLOBALCON  GLOBALCON;          /**< \brief 10, Global Configuration Register */
    Ifx_QSPI_GLOBALCON1 GLOBALCON1;         /**< \brief 14, Global Configuration Register 1 */
    Ifx_QSPI_BACON      BACON;              /**< \brief 18, Basic Configuration Register */
    unsigned char       reserved_1C[4];     /**< \brief 1C, \internal Reserved */
    Ifx_QSPI_ECON       ECON[8];            /**< \brief 20, Configuration Extension */
    Ifx_QSPI_STATUS     STATUS;             /**< \brief 40, Status Register */
    Ifx_QSPI_STATUS1    STATUS1;            /**< \brief 44, Status Register 1 */
    Ifx_QSPI_SSOC       SSOC;               /**< \brief 48, Slave Select Output Control Register */
    unsigned char       reserved_4C[8];     /**< \brief 4C, \internal Reserved */
    Ifx_QSPI_FLAGSCLEAR FLAGSCLEAR;         /**< \brief 54, Flags Clear Register */
    Ifx_QSPI_XXLCON     XXLCON;             /**< \brief 58, Extra Large Data Configuration Register */
    Ifx_QSPI_MIXENTRY   MIXENTRY;           /**< \brief 5C, MIX_ENTRY Register */
    Ifx_QSPI_BACONENTRY BACONENTRY;         /**< \brief 60, BACON_ENTRY Register */
    Ifx_QSPI_DATAENTRY  DATAENTRY[8];       /**< \brief 64, DATA_ENTRY Register */
    unsigned char       reserved_84[12];    /**< \brief 84, \internal Reserved */
    Ifx_QSPI_RXEXIT     RXEXIT;             /**< \brief 90, RX_EXIT Register */
    Ifx_QSPI_RXEXITD    RXEXITD;            /**< \brief 94, RX_EXIT Debug Register */
    unsigned char       reserved_98[80];    /**< \brief 98, \internal Reserved */
    Ifx_QSPI_OCS        OCS;                /**< \brief E8, OCDS Control and Status */
    Ifx_QSPI_KRSTCLR    KRSTCLR;            /**< \brief EC, Kernel Reset Status Clear Register */
    Ifx_QSPI_KRST1      KRST1;              /**< \brief F0, Kernel Reset Register 1 */
    Ifx_QSPI_KRST0      KRST0;              /**< \brief F4, Kernel Reset Register 0 */
    Ifx_QSPI_ACCEN1     ACCEN1;             /**< \brief F8, Access Enable Register 1 */
    Ifx_QSPI_ACCEN0     ACCEN0;             /**< \brief FC, Access Enable Register 0 */
} Ifx_QSPI;

使用typedef可将结构体typedef volatile struct _Ifx_QSPI的名称简化为Ifx_QSPI。

数据手册zhongTable 20-1和Table 20-2给出了QSPI0~QSPI3的起始地址和内部寄存器的偏移地址。.h文件中的地址和此手册中一致。


QSPI0的地址变为0xF0001C00u，寄存器中CLC为4个字节，因此寄存器 PISEL的首地址便宜4.

#define MODULE_QSPI0 /*lint --e(923)*/ ((*(Ifx_QSPI *)0xF0001C00u))