Detailed Description

We can blink out OBD-II error codes using Malfunction Indicator Light (MIL)

Date: Dec 20, 2013

Author: Konstantin Nikonenko; Andrey Belomutskiy, (c) 2012-2020 we show 4 digit error code - 1,5sec * (4xxx+1) digit + 0,4sec * (x3xxx+1) + .... ATTENTION!!! 0 = 1 blink, 1 = 2 blinks, ...., 9 = 10 blinks sequence is the constant!!!

This file is part of rusEfi - see http://rusefi.com

rusEfi is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

rusEfi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file malfunction_indicator.cpp.

Functions
static void	blink_digits (int digit, int duration)

static int	DigitLength (int digit)

static void	DisplayErrorCode (int length, int code)

static void	testMil ()

bool	isMilEnabled ()

void	initMalfunctionIndicator (void)

Variables
static MILController	instance

Function Documentation

◆ blink_digits()

static void blink_digits	(	int	digit,
		int	duration
	)

static

Definition at line 43 of file malfunction_indicator.cpp.

                                                  {
    for (int iter = 0; iter < digit; iter++) {
        // todo: why we set LOW and then HIGH? not the other way around?
        enginePins.checkEnginePin.setValue(0);
        chThdSleepMilliseconds(duration);
        enginePins.checkEnginePin.setValue(1);
        chThdSleepMilliseconds(MFI_BLINK_SEPARATOR);
    }
}

Referenced by DisplayErrorCode().

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◆ DigitLength()

static int DigitLength ( int digit )

static

Definition at line 54 of file malfunction_indicator.cpp.

                                  {
    int i = 0;
    while (digit > 0) {
        digit = digit / 10;
        ++i;
    }
    return i;
}

◆ DisplayErrorCode()

static void DisplayErrorCode	(	int	length,
		int	code
	)

static

Definition at line 64 of file malfunction_indicator.cpp.

                                                   {
    // todo: I suggest we use 'itoa' method to simplify this logic
    for (int iter = length - 1; iter >= 0; iter--) {
        int ourDigit = (int) efiPow10(iter);        // 10^0 = 1, 10^1 = 10, 10^2=100, 10^3 = 1000, ....
        int digit = 1;                      // as we remember "0" we show as one blink
        while (code >= ourDigit) {
            code = code - ourDigit;
            digit++;
        }
        if (iter % 2 == 0)
            blink_digits(digit, MFI_SHORT_BLINK);       // even 2,0 - long blink
        else
            blink_digits(digit, MFI_LONG_BLINK);        // odd  3,1 - short blink
    }
}

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◆ initMalfunctionIndicator()

void initMalfunctionIndicator ( void )

Definition at line 120 of file malfunction_indicator.cpp.

                                    {
    if (!isMilEnabled()) {
        return;
    }
    instance.setPeriod(10 /*ms*/);
    instance.start();
 
#if TEST_MIL_CODE
    addConsoleAction("testmil", testMil);
#endif /* TEST_MIL_CODE */
}

Referenced by commonInitEngineController().

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◆ isMilEnabled()

bool isMilEnabled ( )

Definition at line 116 of file malfunction_indicator.cpp.

                    {
    return isBrainPinValid(engineConfiguration->malfunctionIndicatorPin);
}

Referenced by initMalfunctionIndicator().

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◆ testMil()

static void testMil ( )

static

Definition at line 110 of file malfunction_indicator.cpp.

                      {
    addError(ObdCode::OBD_Engine_Coolant_Temperature_Circuit_Malfunction);
    addError(ObdCode::OBD_Intake_Air_Temperature_Circuit_Malfunction);
}