sys.c File Reference

Sys driver implementation. More...

#include "general.h"
#include "sys.h"
#include "algorithm.h"
#include "bal.h"
#include "bms.h"
#include "can.h"
#include "contactor.h"
#include "diag.h"
#include "fram.h"
#include "fstd_types.h"
#include "imd.h"
#include "interlock.h"
#include "meas.h"
#include "os.h"
#include "sbc.h"
#include "sof_trapezoid.h"
#include "state_estimation.h"
#include <stdint.h>

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Macros
#define	SYS_SAVELASTSTATES(x)
#define	SYS_BIST_GENERAL_MAGIC_NUMBER   (42u)

Enumerations
enum	SYS_CHECK_MULTIPLE_CALLS_e { SYS_MULTIPLE_CALLS_NO , SYS_MULTIPLE_CALLS_YES }

Functions
static SYS_CHECK_MULTIPLE_CALLS_e	SYS_CheckMultipleCalls (SYS_STATE_s *pSystemState)
	check for multiple calls of state machine trigger function More...
static STD_RETURN_TYPE_e	SYS_RunStateMachine (SYS_STATE_s *pSystemState)
	Defines the state transitions. More...
static SYS_RETURN_TYPE_e	SYS_CheckStateRequest (SYS_STATE_REQUEST_e stateRequest)
	checks the state requests that are made. More...
static SYS_STATE_REQUEST_e	SYS_TransferStateRequest (void)
	transfers the current state request to the state machine. More...
SYS_RETURN_TYPE_e	SYS_SetStateRequest (SYS_STATE_REQUEST_e stateRequest)
	sets the current state request of the state variable sys_state. More...
void	SYS_GeneralMacroBist (void)
STD_RETURN_TYPE_e	SYS_Trigger (SYS_STATE_s *pSystemState)
	tick function, call this to advance the state machine More...

Variables
SYS_STATE_s	sys_state

Detailed Description

Sys driver implementation.

Copyright

© 2010 - 2023, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

SPDX-License-Identifier: BSD-3-Clause

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

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3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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Author

foxBMS Team

Date

2020-02-24 (date of creation)

Updated

2023-10-12 (date of last update)

Version

v1.6.0

Prefix

SYS

Definition in file sys.c.

Macro Definition Documentation

SYS_BIST_GENERAL_MAGIC_NUMBER

#define SYS_BIST_GENERAL_MAGIC_NUMBER   (42u)

Magic number that is searched by the SYS_GeneralMacroBist().

Definition at line 85 of file sys.c.

SYS_SAVELASTSTATES

#define SYS_SAVELASTSTATES

(

x

)

Value:

    (x)->lastState    = (x)->state; \
    (x)->lastSubstate = (x)->substate

Saves the last state and the last substate

Definition at line 80 of file sys.c.

Enumeration Type Documentation

SYS_CHECK_MULTIPLE_CALLS_e

enum SYS_CHECK_MULTIPLE_CALLS_e

Symbolic names to check for multiple calls of SYS_Trigger()

Enumerator
SYS_MULTIPLE_CALLS_NO	no multiple calls, OK
SYS_MULTIPLE_CALLS_YES	multiple calls, not OK

Definition at line 92 of file sys.c.

Function Documentation

SYS_CheckMultipleCalls()

static SYS_CHECK_MULTIPLE_CALLS_e SYS_CheckMultipleCalls ( SYS_STATE_s *  pSystemState )

static

check for multiple calls of state machine trigger function

The trigger function is not reentrant, which means it cannot be called multiple times. This functions increments the triggerEntry counter once and must be called each time the trigger function is called. If triggerEntry is greater than one, there were multiple calls. For this function to work, triggerEntry must be decremented each time the trigger function is called, even if no processing do because the timer is non-zero.

Parameters

pSystemState

state of the fake state machine

Returns

SYS_MULTIPLE_CALLS_YES if there were multiple calls, SYS_MULTIPLE_CALLS_NO otherwise

Definition at line 142 of file sys.c.

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SYS_CheckStateRequest()

static SYS_RETURN_TYPE_e SYS_CheckStateRequest ( SYS_STATE_REQUEST_e  stateRequest )

static

checks the state requests that are made.

This function checks the validity of the state requests. The results of the checked is returned immediately.

Parameters

stateRequest

state request to be checked

Returns

result of the state request that was made, taken from SYS_RETURN_TYPE_e

Definition at line 593 of file sys.c.

SYS_GeneralMacroBist()

void SYS_GeneralMacroBist

(

void

)

built-in self-test for the macros in general.h

Definition at line 618 of file sys.c.

SYS_RunStateMachine()

static STD_RETURN_TYPE_e SYS_RunStateMachine ( SYS_STATE_s *  pSystemState )

static

Defines the state transitions.

This function contains the implementation of the state machine, i.e., the sequence of states and substates. It is called by the trigger function every time the state machine timer has a non-zero value.

Parameters

pSystemState

state of the example state machine

Returns

TODO

Definition at line 155 of file sys.c.

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SYS_SetStateRequest()

SYS_RETURN_TYPE_e SYS_SetStateRequest

(

SYS_STATE_REQUEST_e

stateRequest

)

sets the current state request of the state variable sys_state.

This function is used to make a state request to the state machine, e.g., start voltage measurement, read result of voltage measurement, re-initialization. It calls SYS_CheckStateRequest() to check if the request is valid. The state request is rejected if is not valid. The result of the check is returned immediately, so that the requester can act in case it made a non-valid state request.

Parameters

stateRequest

state requested to set

Returns

If the request was successfully set, it returns the SYS_OK, else the current state of requests (type SYS_STATE_REQUEST_e)

Definition at line 569 of file sys.c.

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SYS_TransferStateRequest()

static SYS_STATE_REQUEST_e SYS_TransferStateRequest ( void  )

static

transfers the current state request to the state machine.

This function takes the current state request from sys_state and transfers it to the state machine. It resets the value from sys_state to SYS_STATE_NO_REQUEST

Returns

retVal current state request, taken from SYS_STATE_REQUEST_e

Definition at line 558 of file sys.c.

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SYS_Trigger()

STD_RETURN_TYPE_e SYS_Trigger

(

SYS_STATE_s *

pSystemState

)

tick function, call this to advance the state machine

This function contains the sequence of events in the SYS state machine. It must be called time-triggered, every 10ms.

Definition at line 626 of file sys.c.

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Variable Documentation

sys_state

SYS_STATE_s sys_state

Initial value:

= {
    .timer                  = 0,
    .triggerEntry           = 0,
    .stateRequest           = SYS_STATE_NO_REQUEST,
    .state                  = SYS_STATEMACH_UNINITIALIZED,
    .substate               = SYS_ENTRY,
    .lastState              = SYS_STATEMACH_UNINITIALIZED,
    .lastSubstate           = SYS_ENTRY,
    .illegalRequestsCounter = 0,
    .initializationTimeout  = 0,
}

contains the state of the contactor state machine

Definition at line 98 of file sys.c.