/*************************************************************************
*
*  Copyright Diality, Inc. 2019-2020.  All Rights Reserved.
*  181 Technology, Ste. 150
*  Irvine, CA 92618
*
*  Project Denali
*
*  @file CPLD.c
*
*  @brief Monitor/Controller for the CPLD.
*
*  @date 20-Sep-2019
*
*************************************************************************/

#include "gio.h"
#include "lin.h"

#include "Common.h"
#include "AlarmLamp.h"
#include "Buttons.h"
#include "WatchdogMgmt.h"
#include "CPLD.h"

// ********** private definitions **********

// GIO port A pin assignments for pins connected to CPLD
#define GREEN_GIO_PORT_PIN          6U
#define RED_GIO_PORT_PIN            7U

// GIO port B pin assignments for pins connected to CPLD
#define OFF_REQUEST_GIO_PORT_PIN    0U
#define WD_PET_GIO_PORT_PIN         1U
#define OFF_BUTTON_GIO_PORT_PIN     2U
#define STOP_BUTTON_GIO_PORT_PIN    3U

// LIN port pin assignments for pins connected to CPLD
#define WD_EXP_LIN_PORT_MASK        2U    // (Rx - re-purposed as input GPIO)
#define YELLOW_LIN_PORT_MASK        4U    // (Tx - re-purposed as output GPIO)

// CPLD pin I/O macros
#define GET_OFF()          (PIN_SIGNAL_STATE_T)(gioGetBit(gioPORTB, OFF_BUTTON_GIO_PORT_PIN))
#define GET_STOP()         (PIN_SIGNAL_STATE_T)(gioGetBit(gioPORTB, STOP_BUTTON_GIO_PORT_PIN))
#define GET_WD_EXP()       (PIN_SIGNAL_STATE_T)(((linREG->PIO2 | WD_EXP_LIN_PORT_MASK) == 0 ? PIN_SIGNAL_LOW : PIN_SIGNAL_HIGH))

#define SET_WD_PET()       gioSetBit( gioPORTB, WD_PET_GIO_PORT_PIN, PIN_SIGNAL_HIGH )
#define SET_OFF_REQ()      gioSetBit( gioPORTB, OFF_REQUEST_GIO_PORT_PIN, PIN_SIGNAL_HIGH )
#define SET_GREEN()        gioSetBit( gioPORTA, GREEN_GIO_PORT_PIN, PIN_SIGNAL_HIGH )
#define SET_RED()          gioSetBit( gioPORTA, RED_GIO_PORT_PIN, PIN_SIGNAL_HIGH )
#define SET_YELLOW()       linREG->PIO3 |= YELLOW_LIN_PORT_MASK

#define CLR_WD_PET()       gioSetBit( gioPORTB, WD_PET_GIO_PORT_PIN, PIN_SIGNAL_LOW )
#define CLR_OFF_REQ()      gioSetBit( gioPORTB, OFF_REQUEST_GIO_PORT_PIN, PIN_SIGNAL_LOW )
#define CLR_GREEN()        gioSetBit( gioPORTA, GREEN_GIO_PORT_PIN, PIN_SIGNAL_LOW )
#define CLR_RED()          gioSetBit( gioPORTA, RED_GIO_PORT_PIN, PIN_SIGNAL_LOW )
#define CLR_YELLOW()       linREG->PIO3 &= ~YELLOW_LIN_PORT_MASK

/*************************************************************************
 * @brief initCPLD
 * The initCPLD function initializes the CPLD module.
 * @details
 * Inputs : none
 * Outputs : CPLD module signal outputs set to initial states.
 * @param none
 * @return none
*************************************************************************/
void initCPLD( void )
{
   // initialize watchdog pet output low (inactive)
   CLR_WD_PET();

   // initialize power off request output low (inactive)
   CLR_OFF_REQ();

   // initialize alarm lamp color LED outputs low (off)
   CLR_GREEN();
   CLR_RED();
   CLR_YELLOW();

   // initialize the associated s/w modules
   initAlarmLamp();
   initButtons();
   initWatchdogMgmt();
}

/*************************************************************************
 * @brief setCPLDWatchdog
 * The setCPLDWatchdog function sets the watchdog pet signal to CPLD to \n
 * given level.
 * @details
 * Inputs : none
 * Outputs : watchdog pet signal set to given level.
 * @param level : LOW or HIGH
 * @return none
*************************************************************************/
void setCPLDWatchdog( PIN_SIGNAL_STATE_T level )
{
   if ( level == PIN_SIGNAL_HIGH )
   {
      SET_WD_PET();
   }
   else
   {
      CLR_WD_PET();
   }
}

/*************************************************************************
 * @brief getCPLDWatchdogExpired
 * The getCPLDWatchdogExpired function determines the current signal level \n
 * on the watchdog expired pin from the CPLD.
 * @details
 * Inputs : Signal from CPLD on watchdog expired pin.
 * Outputs : none
 * @param none
 * @return level : (LOW or HIGH)
*************************************************************************/
PIN_SIGNAL_STATE_T getCPLDWatchdogExpired( void )
{
   PIN_SIGNAL_STATE_T level = GET_WD_EXP();

   return level;
}

/*************************************************************************
 * @brief setCPLDLampGreen
 * The setCPLDLampGreen function sets the alarm lamp green signal to CPLD \n
 * to given level.
 * @details
 * Inputs : none
 * Outputs : alarm lamp green signal set to given level.
 * @param level : LOW or HIGH
 * @return none
*************************************************************************/
void setCPLDLampGreen( PIN_SIGNAL_STATE_T level )
{
   if ( level == PIN_SIGNAL_HIGH )
   {
      SET_GREEN();
   }
   else
   {
      CLR_GREEN();
   }
}

/*************************************************************************
 * @brief setCPLDLampYellow
 * The setCPLDLampYellow function sets the alarm lamp yellow signal to CPLD \n
 * to given level.
 * @details
 * Inputs : none
 * Outputs : alarm lamp yellow signal set to given level.
 * @param level : LOW or HIGH
 * @return none
*************************************************************************/
void setCPLDLampYellow( PIN_SIGNAL_STATE_T level )
{
   if ( level == PIN_SIGNAL_HIGH )
   {
      SET_YELLOW();
   }
   else
   {
      CLR_YELLOW();
   }
}

/*************************************************************************
 * @brief setCPLDLampRed
 * The setCPLDLampRed function sets the alarm lamp red signal to CPLD \n
 * to given level.
 * @details
 * Inputs : none
 * Outputs : alarm lamp red signal set to given level.
 * @param level : LOW or HIGH
 * @return none
*************************************************************************/
void setCPLDLampRed( PIN_SIGNAL_STATE_T level )
{
   if ( level == PIN_SIGNAL_HIGH )
   {
      SET_RED();
   }
   else
   {
      CLR_RED();
   }
}

/*************************************************************************
 * @brief setCPLDOffRequest
 * The setCPLDOffRequest function sets the off request signal to CPLD to \n
 * given level.
 * @details
 * Inputs : none
 * Outputs : off request signal set to given level.
 * @param level : LOW or HIGH
 * @return none
*************************************************************************/
void setCPLDOffRequest( PIN_SIGNAL_STATE_T level )
{
   if ( level == PIN_SIGNAL_HIGH )
   {
      SET_OFF_REQ();
   }
   else
   {
      CLR_OFF_REQ();
   }
}

/*************************************************************************
 * @brief getCPLDOffButton
 * The getCPLDOffButton function determines the current signal level\n
 * on the off button pin from the CPLD.
 * @details
 * Inputs : Signal from CPLD on off button pin.
 * Outputs : none
 * @param none
 * @return level : (LOW or HIGH)
*************************************************************************/
PIN_SIGNAL_STATE_T getCPLDOffButton( void )
{
   PIN_SIGNAL_STATE_T level = GET_OFF();

   return level;
}

/*************************************************************************
 * @brief getCPLDStopButton
 * The getCPLDStopButton function determines the current signal level\n
 * on the stop button pin from the CPLD.
 * @details
 * Inputs : Signal from CPLD on off button pin.
 * Outputs : none
 * @param none
 * @return level : (LOW or HIGH)
*************************************************************************/
PIN_SIGNAL_STATE_T getCPLDStopButton( void )
{
   PIN_SIGNAL_STATE_T level = GET_STOP();

   return level;
}