S_Co2_Sensor_Logger/Project/Application/eeprom.c

#include "eeprom.h"





typedef union _eeprom_info
{    
    struct 
    {
        uint8_t isSave;
        uint8_t Mode;
        uint8_t Reserved[SECTOR_SIZE_BYTE - 3];
        uint8_t CheckSum;
    }eeprom_data;
    uint8_t eeprom_buffer[SECTOR_SIZE_BYTE];
}EEPROM_INFO;


static EEPROM_INFO eeprom_info;




/*-------------------------------------------------------------------------*//**
 * @brief         FlashMem_Do_PageWt
 * @param[in]     tPageAddr
 * @param[in]     tBuf
 * @return        None
 *//*-------------------------------------------------------------------------*/
void FlashMem_Do_PageWt( uint32_t tPageAddr, uint32_t* tBuf )
{
   uint32_t    UserID_Buf;

   UserID_Buf = 0x4F17DC86;
   HAL_FMC_PageWrite( UserID_Buf, tPageAddr, tBuf );
}

/*-------------------------------------------------------------------------*//**
 * @brief         FlashMem_Do_PageEr
 * @param[in]     tPageAddr
 * @return        None
 *//*-------------------------------------------------------------------------*/
void FlashMem_Do_PageEr( uint32_t tPageAddr )
{
   uint32_t    UserID_Buf;

   UserID_Buf = 0xA901358F;
   HAL_FMC_PageErase( UserID_Buf, tPageAddr );
}

void FlashMEM_Clock_Initialization(void)
{
    // enable peripheral clock
    HAL_SCU_Peripheral_EnableClock2( PPCLKEN2_FMCLKE, PPxCLKE_Enable );    
    // init crc
    HAL_CRC_Init();
}



bool EEPROM_Read_Mode(uint8_t* pMode)
{
    uint8_t i;
    uint16_t checksum_init = 0x5AA5;
    uint16_t checksum_result;

    __disable_irq();
    memcpy(&eeprom_info.eeprom_buffer[0], (uint32_t *)CONFIG_ADDRESS, SECTOR_SIZE_BYTE);
    __enable_irq();

    if(eeprom_info.eeprom_data.isSave != true)
    {
        return false;
    }

    // CRC Block Calculation
    CRC->INIT = checksum_init;
    CRC->CR = 0
            | MODS_UserMode  // Set User Mode
            | CRC_RLTCLR     // Initialize CRC_RLT Register With CRC_INIT
            | CRC_16           // Polynomial Selection bit : CRC-16
            | CRC_NOINC      // Address Not Auto Increment
            ;
    
    CRCRun();
    for(i = 0 ; i < (SECTOR_SIZE_BYTE-1) ; i++)
    {
        CRC->IN = eeprom_info.eeprom_buffer[i];
    }
    CRCStop();
    checksum_result = CRC->RLT;

    if((checksum_result & 0xFF) == eeprom_info.eeprom_data.CheckSum)
    {
        *pMode = eeprom_info.eeprom_data.Mode;
        return true;
    }
    return false;
}


bool EEPROM_Write_Mode(uint8_t Mode)
{
    uint8_t i;
    uint16_t checksum_init = 0x5AA5;
    uint16_t checksum_result;

    if(eeprom_info.eeprom_data.isSave == true)
    {
        if(eeprom_info.eeprom_data.Mode == Mode)
            return true;
    }    

    memset(&eeprom_info.eeprom_buffer[0], 0, SECTOR_SIZE_BYTE);
    eeprom_info.eeprom_data.isSave = true;
    eeprom_info.eeprom_data.Mode = Mode;

    // CRC Block Calculation
    CRC->INIT = checksum_init;
    CRC->CR = 0
            | MODS_UserMode  // Set User Mode
            | CRC_RLTCLR     // Initialize CRC_RLT Register With CRC_INIT
            | CRC_16           // Polynomial Selection bit : CRC-16
            | CRC_NOINC      // Address Not Auto Increment
            ;
    
    CRCRun();
    for(i = 0 ; i < (SECTOR_SIZE_BYTE-1) ; i++)
    {
        CRC->IN = eeprom_info.eeprom_buffer[i];
    }
    CRCStop();
    checksum_result = CRC->RLT;



    eeprom_info.eeprom_data.CheckSum = checksum_result & 0xFF;


    __disable_irq();
    FlashMem_Do_PageEr(CONFIG_ADDRESS);
    FlashMem_Do_PageWt(CONFIG_ADDRESS, (uint32_t *)&eeprom_info.eeprom_buffer[0]);
    __enable_irq();

    return true;
}



#if 0


void EEPROM_Read_Setting_Data(void)
{     
    #if 0
    __disable_irq();
    memcpy(&Save_control_Info, (uint32_t *)CONFIG_ADDRESS, SECTOR_SIZE_BYTE);
    __enable_irq();
    
    if(Save_control_Info.SaveFlag != EEPROM_SAVE_CHECK_FLAG_DATA)
    {
        Save_control_Info.SaveFlag              = EEPROM_SAVE_CHECK_FLAG_DATA;          // 1
        Save_control_Info.SaveActionMode        = ACTION_MODE_ACTION_AUTO_1;            // 2    
        Save_control_Info.isPowerOnReservation  = FALSE;                                // 3
        Save_control_Info.isPowerOnSaturDay     = FALSE;                                // 4        
        Save_control_Info.PowerOn_Hour          = 0;                                    // 5
        Save_control_Info.PowerOn_Min           = 0;                                    // 6

        Save_control_Info.isPowerOffReservation = FALSE;                                // 7
        Save_control_Info.PowerOff_Hour         = 0;                                    // 8
        Save_control_Info.PowerOff_Min          = 0;                                    // 9
        Save_control_Info.FanActionTime_1       = 0;                                    // 10
        Save_control_Info.FanActionTime_2       = 0;                                    // 11
    }
#endif    
    
}

void EEPROM_Write_Seting_Data(void)
{
#if 0    
    if(Control_Info.isEepromSave == TRUE)
    {
        Control_Info.isEepromSave = FALSE;
        __disable_irq();
        FlashMem_Do_PageEr(CONFIG_ADDRESS);
        FlashMem_Do_PageWt(CONFIG_ADDRESS, (uint32_t *)&Save_control_Info);
        __enable_irq();
    }
#endif    
}


#endif