SM.c File Reference

State machine basic functionality. More...

#include "derivative.h"
#include "compile_options.h"
#include "HAL.h"
#include "SM.h"
#include "Application_Globals.h"

Functions
uint32_t	u32fnSMLaunch (void)
	Launches the State Machine and loops forever from one state to the next.
void	vfnSMWriteNextState (uint16_t u16NextState)
	Writes the next state to gu16SMCurrentState[1]; Keeps the past state as the current one to gu16SMCurrentState[0].
uint32_t	u32fnSMValidateCurrentState (uint16_t *pu16ValidStateList, uint16_t u16Size)
	Function used in each state to validate if the reason we got here is valid.
Variables
uint32_t(*const	u32pfnState [])(void)
uint16_t	gu16SMCurrentState [2u]
uint32_t	gu32SMStateStatus

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Detailed Description

State machine basic functionality.

Copyright (C) 2011 Freescale Semiconductor Freescale Confidential Proprietary

Author:

Freescale Semiconductor

SASD Automotive

r11515

Version:

Date:

Warning:

(If needed)

History:

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Function Documentation

uint32_t u32fnSMLaunch

(

void

)

Launches the State Machine and loops forever from one state to the next.

Parameters:

None

Returns:

u32Status: Always zero. This function should never exit.

uint32_t u32fnSMValidateCurrentState	(	uint16_t *	pu16ValidStateList,
		uint16_t	u16Size
	)

Function used in each state to validate if the reason we got here is valid.

Parameters:

pu16ValidStateList,:	a pointer to an array with a list of valid source states.
u16Size,:	Size of the table in pu16ValidStateList.

Returns:

u32Status: Clear if it is a valid source; SM_STATE_IS_EXECUTING if this state was entered while another one was already executing; SM_INVALID_SOURCE_STATE if the source state is not in the pu16ValidStateList.

void vfnSMWriteNextState

(

uint16_t

u16NextState

)

Writes the next state to gu16SMCurrentState[1]; Keeps the past state as the current one to gu16SMCurrentState[0].

Parameters:

u16NextState,:

the index to the next state.

Returns:

void

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Variable Documentation

uint16_t gu16SMCurrentState[2u]

Array that holds the current state, and the previous one as well. Previous state is held in position 0, current state is held in position 1.

uint32_t gu32SMStateStatus

Global state for the state machine

uint32_t(* const u32pfnState[])(void)

Initial value:

{
  &u32fnSMAppInit, &u32fnStateError, &u32fnStateAcquisition, 
  &u32fnStateDecision, &u32fnStateDeployment, &u32fnStateSystemTest, 
  &u32fnStateGUI}

The element below is a constant array of pointers to functions where