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

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

// ********** private data **********

static BOOL watchdogTaskCheckedIn[NUM_OF_TASKS];

// ********** private function prototypes **********

static void resetWDTaskCheckIns( void );

/*************************************************************************
 * @brief initWatchdogMgmt
 * The initWatchdogMgmt function initializes the watchdog mgmt. module.
 * @details
 * Inputs : none
 * Outputs : Watchdog mgmt. module initialized.
 * @param none
 * @return none
*************************************************************************/
void initWatchdogMgmt( void )
{
   resetWDTaskCheckIns();
}

/*************************************************************************
 * @brief execWatchdogMgmt
 * The execWatchdogMgmt function executes thewatchdog mgmt. service.
 * @details
 * Inputs : none
 * Outputs :
 * @param none
 * @return none
*************************************************************************/
void execWatchdogMgmt( void )
{
   BOOL allTasksCheckedIn = TRUE;
   U32  i;

   // called by background task, so give bg task credit for checking in
   checkInWithWatchdogMgmt( TASK_BG );

   // check to see if all monitored tasks have checked in
   for ( i = 0; i < NUM_OF_TASKS; i++ )
   {
      if ( FALSE == watchdogTaskCheckedIn[i] )
      {
         allTasksCheckedIn = FALSE;
         break;
      }
   }

   // if all monitored tasks checked in, pet watchdog and clear the slate
   if ( TRUE == allTasksCheckedIn )
   {
      U32 d;

      // pulse the watchdog signal
      setCPLDWatchdog( PIN_SIGNAL_HIGH );
      for ( d = 0; d < 1000; d++ ); // ok to block briefly because we're in the background (idle) task
      setCPLDWatchdog( PIN_SIGNAL_LOW );

      // reset task check-ins
      resetWDTaskCheckIns();
   }
}

/*************************************************************************
 * @brief checkInWithWatchdogMgmt
 * The checkInWithWatchdogMgmt function checks a given task in with the \n
 * watchdog mgmt. service.
 * @details
 * Inputs : none
 * Outputs : task is checked in with the watchdog mgmt..
 * @param task : the task that is checking in with the watchdog mgmt.
 * @return none
*************************************************************************/
void checkInWithWatchdogMgmt( TASK_T task )
{
   if ( task < NUM_OF_TASKS )
   {
      watchdogTaskCheckedIn[task] = TRUE;
   }
}

/*************************************************************************
 * @brief resetWDTaskCheckIns
 * The resetWDTaskCheckIns function resets the task check-ins with the watchdog.
 * @details
 * Inputs : none
 * Outputs : watchdogTaskCheckedIn[] array reset to all false.
 * @param none
 * @return none
*************************************************************************/
static void resetWDTaskCheckIns( void )
{
   U32 i;

   // initialize task check-ins to false
   for ( i = 0; i < NUM_OF_TASKS; i++ )
   {
      watchdogTaskCheckedIn[i] = FALSE;
   }
}