/*******************************************************************************/
/**
Copyright (c) 2007 Freescale Semiconductor
\file       des_MC33972.c
\brief      Functions for MSD (MC33972) handling 
\author     Freescale Semiconductor
\author     B05114
\version    0.2
\date       May/2007
*/
/*******************************************************************************/

/** Variable types and common definitions */
#include "typedefs.h"   

/** GPIO definitions  */
#include "lle_GPIO.h"   

/** SPI definitions */
#include "lle_SPI.h"

/** SBC definitions */
#include "des_MC33972.h"

    
/** Backup arrays for MSDI configuration */
/** SPx inputs configuration */
UINT8 u8MSDI_SPxConfig[2] ={MSDI_I_SETTINGS_INIT,
                            MSDI_II_SETTINGS_INIT};

/** Wetting current settings for SPx inputs */
UINT8 u8MSDI_SPx_Wettingcurrent[2] ={MSDI_I_WETCURRENTSP_INIT,
                                     MSDI_II_WETCURRENTSP_INIT};

/** Wetting current settings for SGx inputs */
UINT16 u16MSDI_SGx_Wettingcurrent[2] ={MSDI_I_WETCURRENTSP_INIT,
                                       MSDI_II_WETCURRENTSP_INIT};

/** Wetting timer settings for SPx inputs */
UINT8 u8MSDI_SPx_Wettingtimer[2] ={MSDI_I_WETTIMERSP_INIT,
                                   MSDI_II_WETTIMERSP_INIT};

/** Wetting timer settings for SGx inputs */
UINT16 u16MSDI_SGx_Wettingtimer[2] ={MSDI_I_WETTIMERSG_INIT,
                                     MSDI_II_WETTIMERSG_INIT};


/*******************************************************************************/
/**
* \brief    Write MSDI register and read Serial Output response
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u8MSDI_Comm: MSDI configuration command \n
            u8MSDI_H: Higher byte with configuration data \n
            u8MSDI_L: Lower byte with configuration data
* \return   void (Received data are stored in array u8MSDI_Frame)
*/
void des_MC33972_SendCommand(UINT8 u8MSDI, UINT8 u8MSDI_Command, UINT16 u8MSDI_Data)
{       
    UINT8 u8MSDI_Frame[3];    /* Data array to be sent to the MSDI */     

    u8MSDI_Frame[2] = 0xFF & u8MSDI_Data;      
    u8MSDI_Frame[1] = u8MSDI_Data>> 8; 
    u8MSDI_Frame[0] = u8MSDI_Command;    
    
    if(!u8MSDI)     CS_MC33972_I = 0;    /* CS low */
    if(u8MSDI)      CS_MC33972_II = 0; 
    
    lle_SPI_24(u8MSDI_Frame);  /* Send data to SBC */
    
    if(!u8MSDI)     CS_MC33972_I = 1;    /* CS high */
    if(u8MSDI)      CS_MC33972_II = 1;   
}

/*******************************************************************************/
/**
* \brief    MSDI I initial configuration with values from des_MC33972.h 
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II
* \return   void
*/
void des_MC33972_Config(UINT8 u8MSDI)
{
    if(!u8MSDI)    /* Default configuration for MSDI I */
    {         
    des_MC33972_SendCommand(u8MSDI, MSDI_SETTINGS_CMD,       MSDI_I_SETTINGS_INIT);      
    des_MC33972_SendCommand(u8MSDI, MSDI_WAKEUPINTSP_CMD,    MSDI_I_WKPINTSP_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_WAKEUPINTSG_CMD,    MSDI_I_WKPINTSG_INIT);   
    des_MC33972_SendCommand(u8MSDI, MSDI_WETCURRENTSP_CMD,   MSDI_I_WETCURRENTSP_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_WETCURRENTSG_CMD,   MSDI_I_WETCURRENTSG_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_ANALOG_CMD,         MSDI_I_ANALOG_INIT);        
    des_MC33972_SendCommand(u8MSDI, MSDI_WETTINGTIMERSP_CMD, MSDI_I_WETTIMERSP_INIT);
    des_MC33972_SendCommand(u8MSDI, MSDI_WETTINGTIMERSG_CMD, MSDI_I_WETTIMERSG_INIT);
    des_MC33972_SendCommand(u8MSDI, MSDI_TRISTATESP_CMD,     MSDI_I_TRISTATESP_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_TRISTATESG_CMD,     MSDI_I_TRISTATESG_INIT);
    }
    
    if(u8MSDI)      /* Default configuration for MSDI II */ 
    {         
    des_MC33972_SendCommand(u8MSDI, MSDI_SETTINGS_CMD,       MSDI_II_SETTINGS_INIT);      
    des_MC33972_SendCommand(u8MSDI, MSDI_WAKEUPINTSP_CMD,    MSDI_II_WKPINTSP_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_WAKEUPINTSG_CMD,    MSDI_II_WKPINTSG_INIT);   
    des_MC33972_SendCommand(u8MSDI, MSDI_WETCURRENTSP_CMD,   MSDI_II_WETCURRENTSP_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_WETCURRENTSG_CMD,   MSDI_II_WETCURRENTSG_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_ANALOG_CMD,         MSDI_II_ANALOG_INIT);        
    des_MC33972_SendCommand(u8MSDI, MSDI_WETTINGTIMERSP_CMD, MSDI_II_WETTIMERSP_INIT);
    des_MC33972_SendCommand(u8MSDI, MSDI_WETTINGTIMERSG_CMD, MSDI_II_WETTIMERSG_INIT);
    des_MC33972_SendCommand(u8MSDI, MSDI_TRISTATESP_CMD,     MSDI_II_TRISTATESP_INIT);    
    des_MC33972_SendCommand(u8MSDI, MSDI_TRISTATESG_CMD,     MSDI_II_TRISTATESG_INIT);
    }    
}

/*******************************************************************************/
/**
* \brief    Set MSDI in sleep mode and configures scan and interrupt timers
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u8TimersConfig: Scan and interrupt timer values as defined in des_MC33972.h 
* \return   void
*/
void des_MC33972_SleepMode_IntTimers(UINT8 u8MSDI, UINT8 u8TimersConfig) 
{   
  des_MC33972_SendCommand(u8MSDI, MSDI_SLEEP_CMD, u8TimersConfig);
}

/*******************************************************************************/
/**
* \brief    Configure MSDI SPx pin(s) as switch to battery or switch to ground
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u8SelectSP: SPx pin(s) as defined in des_MC33972.h \n
            (MSDI_SP0, MSDI_SP1, ...MSDI_SP7) OR combinations are valid \n
            u8Connect: MSDI_SWtoBAT, MSDI_SWtoGND
* \return   void
*/
void des_MC33972_Set_SPinputs(UINT8 u8MSDI, UINT8 u8SelectSP, UINT8 u8Connect)
{        
    if(u8Connect)
        u8MSDI_SPxConfig[u8MSDI] |= u8SelectSP;     /* Set selected bits */
    
    if(!u8Connect)
        u8MSDI_SPxConfig[u8MSDI] &= ~u8SelectSP;    /* Clear selected bits */
                               
    des_MC33972_SendCommand(u8MSDI, MSDI_SETTINGS_CMD, u8MSDI_SPxConfig[u8MSDI]);                       
}

/*******************************************************************************/
/**
* \brief    Select SPx inputs wetting current
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u8SPin: SPx pin(s) as defined in des_MC33972.h \n
            (MSDI_SP0, MSDI_SP1, ... MSDI_SP7) OR combinations are valid \n
            bCurrent: MSDI_2mA, MSDI_16mA 
* \return   void
*/
void des_MC33972_Set_SP_WettingCurrent(UINT8 u8MSDI, UINT8 u8SPin, UINT8 bCurrent)
{
    if(!bCurrent)
        u8MSDI_SPx_Wettingcurrent[u8MSDI] &= ~u8SPin;    /* Clear selected bits */
    
    if(bCurrent)
        u8MSDI_SPx_Wettingcurrent[u8MSDI] |= u8SPin;     /* Set selected bits */
   
    des_MC33972_SendCommand(u8MSDI, MSDI_WETCURRENTSP_CMD,
                            u8MSDI_SPx_Wettingcurrent[u8MSDI]);
}

/*******************************************************************************/
/**
* \brief    Select SGx inputs wetting current
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u16SGin: SGx pin(s) as defined in des_MC33972.h \n
            (MSDI_SG0, MSDI_SG1, ...MSDI_SG13) OR combinations are valid \n
            bCurrent: MSDI_2mA, MSDI_16mA
* \return   void
*/
void des_MC33972_Set_SG_WettingCurrent(UINT8 u8MSDI, UINT16 u16SGin, UINT8 bCurrent)
{
    if(!bCurrent)
        u16MSDI_SGx_Wettingcurrent[u8MSDI] &= ~u16SGin;    /* Clear selected bits */
    
    if(bCurrent)
        u16MSDI_SGx_Wettingcurrent[u8MSDI] |= u16SGin;     /* Set selected bits */
   
    des_MC33972_SendCommand(u8MSDI, MSDI_WETCURRENTSG_CMD,
                            u16MSDI_SGx_Wettingcurrent[u8MSDI]);
}

/*******************************************************************************/
/**
* \brief    Enable/ disable the wetting timer for SPx inputs
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u8SPin: SPx pin(s) as defined in des_MC33972.h \n
            (MSDI_SP0, MSDI_SP1, ...MSDI_SP7) OR combinations are valid \n
            u8Select: ENABLE, DISABLE
* \return   void
*/
void des_MC33972_SPinputs_WettingTimer(UINT8 u8MSDI, UINT8 u8SPin, UINT8 u8Select)
{
    if(u8Select)
        u8MSDI_SPx_Wettingtimer[u8MSDI] |= u8SPin;     /* Set selected bits */
    
    if(!u8Select)
        u8MSDI_SPx_Wettingtimer[u8MSDI] &= ~u8SPin;    /* Clear selected bits */

    des_MC33972_SendCommand(u8MSDI, MSDI_WETTINGTIMERSP_CMD,
                            u8MSDI_SPx_Wettingtimer[u8MSDI]);       
}

/*******************************************************************************/
/**
* \brief    Enable/ disable the wetting timer for SGx inputs
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u16SGin: SGx pin(s) as defined in des_MC33972.h \n
            (MSDI_SG0, MSDI_SG1, ...MSDI_SG13) OR combinations are valid \n
            u8Select: ENABLE, DISABLE
* \return   void
*/
void des_MC33972_SGinputs_WettingTimer(UINT8 u8MSDI, UINT16 u16SGin,UINT8 u8Select)
{
    if(u8Select)
        u16MSDI_SGx_Wettingtimer[u8MSDI] |= u16SGin;     /* Set selected bits */
    
    if(!u8Select)
        u16MSDI_SGx_Wettingtimer[u8MSDI] &= ~u16SGin;    /* Clear selected bits */
    
    des_MC33972_SendCommand(u8MSDI, MSDI_WETTINGTIMERSG_CMD,
                            u16MSDI_SGx_Wettingtimer[u8MSDI]);    
}

/*******************************************************************************/
/**
* \brief    Set SPx inputs in high impedance state
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II                        \n
            u8SPin: SPx pin(s) as defined in des_MC33972.h                  \n
            (MSDI_SP0, MSDI_SP1, ..., MSDI_SP7) OR combinations are allowed
* \return   void
*/
void des_MC33972_Set_SP_HighImpedance(UINT8 u8MSDI, UINT8 u8SPin)
{    
    des_MC33972_SendCommand(u8MSDI, MSDI_TRISTATESP_CMD, u8SPin);
}

/*******************************************************************************/
/**
* \brief    Set SGx inputs in high impedance state
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II                        \n
            u16SGin: SGx pin(s) as defined in des_MC33972.h                 \n
            (MSDI_SG0, MSDI_SG1,..., MSDI_SG13) OR combinations are allowed.
* \return   void
*/
void des_MC33972_Set_SG_HighImpedance(UINT8 u8MSDI, UINT16 u16SGin)
{      
    des_MC33972_SendCommand(u8MSDI, MSDI_TRISTATESG_CMD, u16SGin);
}

/*******************************************************************************/
/**
* \brief    Select SPx/ SGx inputs for wake-up interrupt 
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u8SPin, u16SGin: SPx pin(s) as defined in des_MC33972.h \n
            (MSDI_SP0, MSDI_SP1, ..., MSDI_SG12, MSDI_SG13) OR combinations are valid
* \return   void
*/
void des_MC33972_Select_WakeUp_Interrupt(UINT8 u8MSDI, UINT8 u8SPin, UINT16 u16SGin)
{
    des_MC33972_SendCommand(u8MSDI, MSDI_WAKEUPINTSP_CMD, u8SPin);
    des_MC33972_SendCommand(u8MSDI, MSDI_WAKEUPINTSG_CMD, u16SGin);
}

/*******************************************************************************/
/**
* \brief    Select analog input channel and desired current or high impedance
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II \n
            u8Channel: Analog channel as defined in des_MC33972.h \n
            (MSDI_AN_SG0, MSDI_AN_SG1,..., MSDI_AN_SP7, MSDI_AN_SP7) \n
            u8Mode: MSDI_AN_HiImpedance, MSDI_AN_2mA, MSDI_AN_16mA
* \return   void
*/
void des_MC33972_Set_Analog_Channel(UINT8 u8MSDI, UINT8 u8Channel, UINT8 u8Mode)
{
    des_MC33972_SendCommand(u8MSDI, MSDI_ANALOG_CMD, u8Channel | u8Mode);
}
    
/*******************************************************************************/
/**
* \brief    Read SPx, SGx and flags status
* \author   B05114
* \param    u8MSDI: MSDI identifier, MSD_I, MSDI, II
* \return   u32MSDI_Status: Structure with status of flags, SP inputs ans SG inputs    
*/
MSDI_Stat32b des_MC33972_Read_Status(UINT8 u8MSDI)
{
    MSDI_Stat32b u32MSDI_Status;
    UINT8 u8Aux;
    UINT8 u8MSDI_Frame[]={0, 0, 0};    /* Data array to be sent to the MSDI */         
    
    if(!u8MSDI)     CS_MC33972_I = 0;    /* CS low */
    if(u8MSDI)      CS_MC33972_II = 0; 
    
    lle_SPI_24(u8MSDI_Frame);  /* Send data to SBC */
    
    if(!u8MSDI)     CS_MC33972_I = 1;    /* CS high */
    if(u8MSDI)      CS_MC33972_II = 1; 
      
    
    u32MSDI_Status.Flags = u8MSDI_Frame[0] & 0xC0;  /* Flags */
    
    u32MSDI_Status.SPinputs = u8MSDI_Frame[0]<<2;    
    u8Aux = u8MSDI_Frame[1] >> 6;    
    u32MSDI_Status.SPinputs |= u8Aux;   /* SP input status */    
    
    u32MSDI_Status.SGinputs = 0x3F00 & (u8MSDI_Frame[1] << 8);      
    
    u32MSDI_Status.SGinputs |= u8MSDI_Frame[2];  /* SP input status */
    
    return u32MSDI_Status;
}

/*******************************************************************************/