/**************************************************************************
*
* Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
*
* THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
* WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
*
* @file ModeInitPOST.c
*
* @author (last) Quang Nguyen
* @date (last) 27-Aug-2020
*
* @author (original) Dara Navaei
* @date (original) 05-Nov-2019
*
***************************************************************************/

#include "Accel.h"
#include "CPLD.h"
#include "FPGA.h"
#include "Heaters.h"
#include "ModeInitPOST.h"
#include "OperationModes.h"
#include "Pressures.h"
#include "RTC.h"
#include "TemperatureSensors.h"
#include "WatchdogMgmt.h"

/**
 *  @addtogroup DGInitAndPOSTMode
 *  @{
 */

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

static DG_POST_STATE_T postState = DG_POST_STATE_START;     ///< Currently active initialize & POST state.
static BOOL postCompleted = FALSE;                          ///< Flag indicating POST completed.
static BOOL postPassed = FALSE;                             ///< Flag indicating all POST tests passed.
static BOOL tempPOSTPassed = TRUE;                          ///< Temporary flag indicating all POST tests completed so far have passed.

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

static DG_POST_STATE_T handlePOSTStatus( SELF_TEST_STATUS_T testStatus );

/*********************************************************************//**
 * @brief
 * The initInitAndPOSTMode function initializes the Initialization and POST mode module.
 * @details Inputs: none
 * @details Outputs: Initialization and POST mode module initialized
 * @return none
 *************************************************************************/
void initInitAndPOSTMode( void )
{
    postState = DG_POST_STATE_START;
    postCompleted = FALSE;
    postPassed = FALSE;
    tempPOSTPassed = TRUE;
}

/*********************************************************************//**
 * @brief
 * The transitionToInitAndPOSTMode function prepares for transition to
 * initialization and POST mode.
 * @details Inputs: none
 * @details Outputs: none
 * @return none
 *************************************************************************/
void transitionToInitAndPOSTMode( void )
{
    // TODO - anything needed here?
}

/*********************************************************************//**
 * @brief
 * The execInitAndPOSTMode function executes the initialization and POST
 * mode state machine.
 * @details Inputs: postState
 * @details Outputs: Initialization and POST mode state machine executed
 * @return current state.
 *************************************************************************/
U32 execInitAndPOSTMode( void )
{
    SELF_TEST_STATUS_T testStatus = SELF_TEST_STATUS_IN_PROGRESS;

    // execute current POST state
    switch ( postState )
    {
        case DG_POST_STATE_START:
            postState = DG_POST_STATE_FPGA;
#ifdef SKIP_POST
            postState = DG_POST_STATE_COMPLETED;
#endif
            break;

        case DG_POST_STATE_FPGA:
            testStatus = execFPGATest();
            postState = handlePOSTStatus( testStatus );
            break;

        case DG_POST_STATE_RTC:
            testStatus = execRTCSelfTest();
            postState = handlePOSTStatus( testStatus );
            break;

        case DG_POST_STATE_TEMPERATURE_SENSORS:
            testStatus = execTemperatureSensorsSelfTest();
            postState = handlePOSTStatus( testStatus );
            break;

        case DG_POST_STATE_HEATERS:
            testStatus = execHeatersSelfTest();
            postState = handlePOSTStatus( testStatus );
            break;

        case DG_POST_STATE_ACCELEROMETER:
#ifndef DISABLE_ACCELS
            testStatus = execAccelTest();
#else
            testStatus = SELF_TEST_STATUS_PASSED;
#endif
            postState = handlePOSTStatus( testStatus );
            break;

        case DG_POST_STATE_PRESSURES:
            testStatus = execPressureSelfTest();
            postState = handlePOSTStatus( testStatus );
            break;

        case DG_POST_STATE_WATCHDOG:
            testStatus = execWatchdogTest();
            handlePOSTStatus( testStatus );  // ignoring return value because last test
            if ( TRUE == tempPOSTPassed )
            {
                postState = DG_POST_STATE_COMPLETED;
            }
            else
            {
                postState = DG_POST_STATE_FAILED;
            }
            break;

        case DG_POST_STATE_COMPLETED:
            // set overall HD POST status to "passed"
            postPassed = TRUE;
            // set overall HD POST completed status to TRUE
            postCompleted = TRUE;
            // TODO - send POST status on CAN
            // go to standby mode
            requestNewOperationMode( DG_MODE_STAN );
            break;

        case DG_POST_STATE_FAILED:
            // TODO - send POST status on CAN
            // will want POST faults to wait for us to get here before sending us to fault mode
            requestNewOperationMode( DG_MODE_FAUL );
            break;

        default:
            // TODO - s/w fault
            postState = DG_POST_STATE_FAILED;
            break;
    }

    return postState;
}

/*********************************************************************//**
 * @brief
 * The isPOSTCompleted function determines whether all DG POST have been run
 * and completed.  If true, call the isPOSTPassed() to see final result (pass/fail).
 * @details Inputs: postCompleted
 * @details Outputs: none
 * @return true if all HD POST tests have completed, false if not
 *************************************************************************/
BOOL isPOSTCompleted( void )
{
    return postCompleted;
}

/*********************************************************************//**
 * @brief
 * The isPOSTPassed function determines whether all HD POST have passed.
 * Call this function after POST is complete (call isPOSTCompleted function).
 * @details Inputs: postPassed
 * @details Outputs: none
 * @return true if all HD POST tests have passed, false if not
 *************************************************************************/
BOOL isPOSTPassed( void )
{
    return postPassed;
}

/*********************************************************************//**
 * @brief
 * The handlePOSTStatus function handles a status result returned by a POST function.
 * @details Inputs: postPassed
 * @details Outputs: none
 * @param testStatus status reported by last test
 * @return recommended next POST state
 *************************************************************************/
static DG_POST_STATE_T handlePOSTStatus( SELF_TEST_STATUS_T testStatus )
{
    DG_POST_STATE_T result = postState;

    if ( ( testStatus == SELF_TEST_STATUS_PASSED ) || ( testStatus == SELF_TEST_STATUS_FAILED ) )
    {
        result = (DG_POST_STATE_T)((int)postState + 1);  // move on to next POST test
        if ( testStatus == SELF_TEST_STATUS_FAILED )
        {
            tempPOSTPassed = FALSE;
        }
    }

    return result;
}

/*********************************************************************//**
 * @brief
 * The getCurrentInitAndPOSTState function returns the current state of the
 * initialization and POST mode.
 * @details Inputs: postState
 * @details Outputs: none
 * @return the current state of initialization and POST mode
 *************************************************************************/
DG_POST_STATE_T getCurrentInitAndPOSTState( void )
{
    return postState;
}

/**@}*/