AKM_Demo_Board/Project/Application/sensor/ak9757w.c

#include "ak9757w.h"
#include "ak9757w_def.h"
#include "app_i2c_master.h"
#include "app_log.h"
#include "sw_timer.h"










static AK9757W_HANDLER  AK9757W_Handler;
static AK9757W_HANDLER* pHandler = &AK9757W_Handler; 

const uint8_t default_cntl_reg_data[] = {0x20, 0xFF, 0xFE, 0x4A, 0xE1, 0x00, 0x00, 0x00, 0xDF, 0xE0};


static bool AK9757W_Check_CompanyCode(void);
static bool AK9757W_Set_Operation_Mode(AK9757W_MODE mode);
static bool AK9757W_Set_ADC_Inverter(AK9757W_MODE mode);



static bool AK9757W_Process(void);







bool AK9757W_Initialization(void)
{


    SW_Timer_Callback_Register(SW_TIMER_RUN_CONTINUE, 10, AK9757W_Process);
    return true;
    

#if 0
    if(AK9757W_Check_CompanyCode() == false)
    {
        return false;
    }

    if(AK9757_Set_Mode(AK9757W_MODE_CONTINUOUS_MODE) == false)
    {
        return false;
    }

    Delay_ms(200);

    if(AK9757_Get_SensorID() == false)
    {
        return false;
    }

    AK9757W_Handler.isInitComplete = true;
#endif    


}





static bool AK9757W_Process(void)
{
    switch(pHandler->Step)
    {
        case STEP_INIT:
            AK9757W_Handler.isInitComplete = false;
            AK9757W_Handler.SensorID = 0xFFFFFFFF;
            pHandler->Step = STEP_CHECK_COMPANY;
        break;

        case STEP_CHECK_COMPANY:
            if(AK9757W_Check_CompanyCode() == false){
                pHandler->Step = STEP_ERROR;
            }else{
                pHandler->Step = STEP_CHECK_ID_POWER_ON;            
            }
        break;
        case STEP_CHECK_ID_POWER_ON:
            if(AK9757_Set_Mode(AK9757W_MODE_CONTINUOUS_MODE) == false){
                pHandler->Step = STEP_ERROR;
            }else{
                pHandler->TickCount = millis();
                AK9757W_Handler.Step = STEP_CHECK_ID_POWER_ON_WAIT;
            }
        break;
        case STEP_CHECK_ID_POWER_ON_WAIT:
            if((millis() - pHandler->TickCount) >= AK9757W_CHIPID_READ_WAIT_TIME)
                pHandler->Step = STEP_CHECK_ID_READ;
        break;
        case STEP_CHECK_ID_READ:
            if(AK9757_Get_SensorID() == false){
                pHandler->Step = STEP_ERROR;
            }
            else{
                pHandler->Step = STEP_CHECK_ID_POWER_OFF;
            }    
        break;
        case STEP_CHECK_ID_POWER_OFF:
            if(AK9757_Set_Mode(AK9757W_MODE_STAND_BY_MODE) == false){
                pHandler->Step = STEP_ERROR;
            }
            else{                
                AK9757W_Handler.Step = STEP_WRITE_CNTL1_9;
            }
        break;
        case STEP_WRITE_CNTL1_9:
            if(AK9757_Set_CTL1_9_Parameter() == false){
            }
            else{

            }
        break;

        case STEP_ERROR:
        break;
    }

}

















static bool AK9757W_Check_CompanyCode(void)
{
    int error;
    uint8_t TxBuff;
    uint8_t RxBuff[10];
    
    TxBuff = AK9757W_REG_RO_COMPANY_CODE;
    error = I2C_Master_Write(TEMP_I2C_ADDRESS, &TxBuff, 1);
    if(error != E_NO_ERROR)
    {
        dbg_printf(LOG_LEVEL_DEBUG, "I2C Write Error %d\r\n", error);
        return false;
    }    

    error = I2C_Master_Read(TEMP_I2C_ADDRESS, &RxBuff[0], 2);
    if(error != E_NO_ERROR)
    {
        dbg_printf(LOG_LEVEL_DEBUG, "I2C Read Error %d\r\n", error);
        return false;
    }

    if(!(RxBuff[0] == AK9757W_COMPANY_CODE_VALUE && RxBuff[1] == AK9757W_DEVICE_ID_VALUE)) 
    {
        dbg_printf(LOG_LEVEL_DEBUG, "Read Data %X, %X\r\n", RxBuff[0], RxBuff[1]);
        return false;
    }
    
    dbg_printf(LOG_LEVEL_DEBUG, "Company %XH, %XH\r\n", RxBuff[0], RxBuff[1]);
    return true;
}


bool AK9757_Set_Mode(AK9757W_MODE mode)
{
    int error;
    uint8_t TxBuff[10];
    uint8_t RxBuff[10];

    TxBuff[0] = AK9757W_REG_RW_CNTL9;    
    error = I2C_Master_WriteRead(TEMP_I2C_ADDRESS, &TxBuff[0], 1, &RxBuff[0], 1);    
    if(error != E_NO_ERROR)
    {
        dbg_printf(LOG_LEVEL_DEBUG, "I2C Read Error %d\r\n", error);
        return false;
    }

    //#define CLEARBIT(ADDRESS,BIT)	    (ADDRESS &= ~(1<<BIT))
    dbg_printf(LOG_LEVEL_DEBUG, "read data %x\r\n", RxBuff[0]);
    TxBuff[1] = RxBuff[0] & ~(AK9757W_CNTL9_MODE_MSK << AK9757W_CNTL9_MODE_POS);
    TxBuff[1] |= (mode << AK9757W_CNTL9_MODE_POS);    
    dbg_printf(LOG_LEVEL_DEBUG, "write data %x\r\n", TxBuff[1]);

    error = I2C_Master_Write(TEMP_I2C_ADDRESS, &TxBuff[0], 2);
    if(error != E_NO_ERROR)
    {
        dbg_printf(LOG_LEVEL_DEBUG, "I2C write Error %d\r\n", error);
        return false;
    }
    return true;
}

bool AK9757_Set_AD_OutputDataTyte(AK9757W_IR_ADC_INVERT type)
{

}


bool AK9757_Set_CTL1_9_Parameter(void)
{
    int error;
    uint8_t i;    
    memcpy(&pHandler->Cntl_Info.CNTL_Buff[0], &default_cntl_reg_data[0], sizeof(default_cntl_reg_data));
    error = I2C_Master_Write(TEMP_I2C_ADDRESS, &pHandler->Cntl_Info.CNTL_Buff[0], sizeof(default_cntl_reg_data));
    if(error != E_NO_ERROR)
    {
        dbg_printf(LOG_LEVEL_DEBUG, "I2C CNTL1~9 write Error %d\r\n", error);
        return false;
    }
    return true;    
}



























bool AK9757_Get_SensorID(void)
{
    int error;
    uint8_t TxBuff;
    uint8_t RxBuff[10];
    
    TxBuff = AK9757W_REG_RO_CHIPID;
    error = I2C_Master_WriteRead(TEMP_I2C_ADDRESS, &TxBuff, 1, &RxBuff[0], 4);    
    if(error != E_NO_ERROR)
    {
        dbg_printf(LOG_LEVEL_DEBUG, "I2C Read Error %d\r\n", error);
        return false;
    }
    AK9757W_Handler.SensorID = (RxBuff[0] << 24) | (RxBuff[1] << 16) | (RxBuff[2] << 8) | (RxBuff[3] << 0);
    dbg_printf(LOG_LEVEL_DEBUG, "Read ChipID %XH\r\n", AK9757W_Handler.SensorID);    

    return true;
}