HC32F460PETB写8563的驱动

下面是基于HC32F460PETB的8563实时时钟驱动程序示例：

#include "hc32f460.h"
#include "hc32f4a0_utility.h"

#define RTC_I2C_ADDRESS     0xA2U       /*!< RTC I2C Address */

/* I2C function */
#define I2C_UNIT                    M4_I2C1
#define I2C_MASTER_WRITE_ADDRESS   0x00U
#define I2C_MASTER_READ_ADDRESS    0x01U

/**
 * @brief  Configure the I2C peripheral for RTC communication.
 * @param  None
 * @retval None
 */
static void I2C_RTC_Configuration(void)
{
    stc_i2c_init_t stcI2cInit;
    stc_i2c_irq_cb_t stcI2cIrqCallBack;

    /* Enable peripheral clock */
    PWC_Fcg1PeriphClockCmd(PWC_FCG1_IIC1, Enable);

    /* Initialize I2C master */
    MEM_ZERO_STRUCT(stcI2cInit);
    stcI2cInit.u32Baudrate = 100000UL;
    stcI2cInit.u32I2cClkDiv = I2C_CLK_DIV1;
    stcI2cInit.u32SclTime = I2C_SCL_TIME;
    stcI2cInit.u8AddrMode = I2C_ADDR_7BIT;
    stcI2cInit.u8GeneralCall = I2C_GC_DISABLE;
    stcI2cInit.u8SlaveAddr = (RTC_I2C_ADDRESS << 1U);
    I2C_Init(I2C_UNIT, &stcI2cInit);

    /* Configure I2C interrupt */
    MEM_ZERO_STRUCT(stcI2cIrqCallBack);
    stcI2cIrqCallBack.pfnTxIrqCb = NULL;
    stcI2cIrqCallBack.pfnRxIrqCb = NULL;
    stcI2cIrqCallBack.pfnStopDetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr0DetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr1DetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr2DetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr3DetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr4DetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr5DetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr6DetectIrqCb = NULL;
    stcI2cIrqCallBack.pfnSlaveAddr7DetectIrqCb = NULL;
    I2C_IrqInit(I2C_UNIT, &stcI2cIrqCallBack);

    /* Enable I2C */
    I2C_Cmd(I2C_UNIT, Enable);
}

/**
 * @brief  Write data to RTC over I2C.
 * @param  [in] u8RegAddr     RTC register address
 * @param  [in] pu8Data       Pointer to data buffer to write
 * @param  [in] u32DataLen    Length of data to write
 * @retval None
 */
static void RTC_I2C_Write(uint8_t u8RegAddr, const uint8_t *pu8Data, uint32_t u32DataLen)
{
    stc_i2c_transfer_t stcTransfer;

    /* Configure I2C transfer */
    MEM_ZERO_STRUCT(stcTransfer);
    stcTransfer.u8DevAddr = (RTC_I2C_ADDRESS << 1U) | I2C_MASTER_WRITE_ADDRESS;
    stcTransfer.enMode = I2cTransMode;
    stcTransfer.u32DataLen = u32DataLen + 1UL;
    stcTransfer.pu8Data = M4_OSPI_ALLOC(u32DataLen + 1UL);
    stcTransfer.pu8Data[0UL] = u8RegAddr;
    if (NULL != pu8Data)
    {
        memcpy(&stcTransfer.pu8Data[1UL], pu8Data, u32DataLen);
    }
    I2C_MasterTransfer(I2C_UNIT, &stcTransfer, I2C_TIMEOUT);

    /* Free allocated memory */
    if (NULL != stcTransfer.pu8Data)
    {
        M4_OSPI_FREE(stcTransfer.pu8Data);
    }
}

/**
 * @brief  Read data from RTC over I2C.
 * @param  [in] u8RegAddr     RTC register address
 * @param  [out] pu8Data      Pointer to data buffer to read
 * @param  [in] u32DataLen    Length of data to read
 * @retval None
 */
static void RTC_I2C_Read(uint8_t u8RegAddr, uint8_t *pu8Data, uint32_t u32DataLen)
{
    stc_i2c_transfer_t stcTransfer;

    /* Configure I2C transfer */
    MEM_ZERO_STRUCT(stcTransfer);
    stcTransfer.u8DevAddr = (RTC_I2C_ADDRESS << 1U) | I2C_MASTER_READ_ADDRESS;
    stcTransfer.enMode = I2cReceiveMode;
    stcTransfer.u32DataLen = u32DataLen;
    stcTransfer.pu8Data = pu8Data;
    I2C_MasterTransfer(I2C_UNIT, &stcTransfer, I2C_TIMEOUT);
}

/**
 * @brief  Configure the RTC.
 * @param  None
 * @retval None
 */
static void RTC_Configuration(void)
{
    uint8_t u8Reg;

    /* Enable battery backup for RTC */
    PWC_BackupAccessCmd(Enable);

    /* Configure RTC */
    u8Reg = 0x00U;              /* Control register 1 */
    u8Reg |= 0x80U;             /* Enable RTC */
    u8Reg |= 0x04U;             /* Set 24-hour mode */
    RTC_I2C_Write(0x00U, &u8Reg, 1UL);

    u8Reg = 0x01U;              /* Control register 2 */
    u8Reg |= 0x40U;             /* Enable alarm interrupt */
    RTC_I2C_Write(0x01U, &u8Reg, 1UL);

    u8Reg = 0x02U;              /* Control register 3 */
    u8Reg |= 0x08U;             /* Enable battery backup */
    RTC_I2C_Write(0x02U, &u8Reg, 1UL);
}

/**
 * @brief  Set the RTC time.
 * @param  [in] pstcTime      Pointer to RTC time structure
 * @retval None
 */
void RTC_SetTime(const stc_rtc_time_t *pstcTime)
{
    uint8_t u8Data[3];

    /* Write time */
    u8Data[0] = pstcTime->u8Second;
    u8Data[1] = pstcTime->u8Minute;
    u8Data[2] = pstcTime->u8Hour;
    RTC_I2C_Write(0x02U, u8Data, 3UL);
}

/**
 * @brief  Set the RTC date.
 * @param  [in] pstcDate      Pointer to RTC date structure
 * @retval None
 */
void RTC_SetDate(const stc_rtc_date_t *pstcDate)
{
    uint8_t u8Data[4];

    /* Write date */
    u8Data[0] = pstcDate->u8DayOfWeek;
    u8Data[1] = pstcDate->u8Day;
    u8Data[2] = pstcDate->u8Month;
    u8Data[3] = pstcDate->u8Year;
    RTC_I2C_Write(0x05U, u8Data, 4UL);
}

/**
 * @brief  Get the RTC time.
 * @param  [out] pstcTime     Pointer to RTC time structure
 * @retval None
 */
void RTC_GetTime(stc_rtc_time_t *pstcTime)
{
    uint8_t u8Data[3];

    /* Read time */
    RTC_I2C_Read(0x02U, u8Data, 3UL);
    pstcTime->u8Second = u8Data[0];
    pstcTime->u8Minute = u8Data[1];
    pstcTime->u8Hour = u8Data[2];
}

/**
 * @brief  Get the RTC date.
 * @param  [out] pstcDate     Pointer to RTC date structure
 * @retval None
 */
void RTC_GetDate(stc_rtc_date_t *pstcDate)
{
    uint8_t u8Data[4];

    /* Read date */
    RTC_I2C_Read(0x05U, u8Data, 4UL);
    pstcDate->u8DayOfWeek = u8Data[0];
    pstcDate->u8Day = u8Data[1];
    pstcDate->u8Month = u8Data[2];
    pstcDate->u8Year = u8Data[3];
}

/**
 * @brief  Set the RTC alarm time.
 * @param  [in] pstcTime      Pointer to RTC time structure
 * @retval None
 */
void RTC_SetAlarm(const stc_rtc_time_t *pstcTime)
{
    uint8_t u8Data[3];

    /* Write alarm */
    u8Data[0] = pstcTime->u8Second;
    u8Data[1] = pstcTime->u8Minute;
    u8Data[2] = pstcTime->u8Hour;
    RTC_I2C_Write(0x09U, u8Data, 3UL);
}

在使用此驱动程序之前，您需要首先调用 `I2C_RTC_Configuration` 函数来配置I2C总线，然后调用 `RTC_Configuration` 函数来配置RTC。然后，您可以使用 `RTC_SetTime`、`RTC_SetDate` 和 `RTC_SetAlarm` 函数来设置RTC时间、日期和闹钟，并使用 `RTC_GetTime` 和 `RTC_GetDate` 函数来读取当前时间和日期。需要根据8563实时时钟的数据手册来了解和配置其他功能。