BrakeSystemControl.h File Reference

#include "../ControllerSystem.h"
#include "../../Sensors/AnalogSensors/BrakePressure.h"
#include "../../Sensors/AnalogSensors/Temperature.h"

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Classes
struct	BrakeSystemControl

Enumerations
enum	BrakeSystemStatus {   BRAKES_OK , PRESSURE_UNDER_LIMIT , PRESSURE_OVER_LIMIT , PRESSURE_SENSOR_ERROR ,   TEMPERATURE_OVER_LIMIT , TEMPERATURE_SENSOR_ERROR }

Functions
void	initBrakeSystemControl (BrakeSystemControl *bsc, int hz, int maxTemp, int brakeLightActivationPoint, int heavyBrakingActivationPoint, int fbp_channel, int rbp_channel, int temp_channel)
	Initializes the Braking System with initial settings. More...
void	setSensorReadings (BrakeSystemControl *bsc, float frontPressure, float rearPressure, float temperaure)
	Updates BrakeSystemStatus with current sensor data. More...
void	activateBrakeLight (BrakeSystemControl *bsc)
	Checks whether the line pressure is higher than the activation point specified by the user. More...
void	inHeavyBreaking (BrakeSystemControl *bsc)
	Checks whether the line pressure is higher than the activation point specified by the user. More...
BrakeSystemStatus	checkSensorLimits (BrakeSystemControl *bsc)
	Checks if the brake system is within the defined limits and desired ranges. More...
int	brakeSafteyCheck (void *bsc)
	Checks the saftey of the braking system. More...
void	setFrontPressure (BrakeSystemControl *bsc, float pressure)
void	setRearPressure (BrakeSystemControl *bsc, float pressure)
void	setTemperature (BrakeSystemControl *bsc, float temperature)

Enumeration Type Documentation

BrakeSystemStatus

enum BrakeSystemStatus

Enumerator
BRAKES_OK
PRESSURE_UNDER_LIMIT
PRESSURE_OVER_LIMIT
PRESSURE_SENSOR_ERROR
TEMPERATURE_OVER_LIMIT
TEMPERATURE_SENSOR_ERROR

Definition at line 8 of file BrakeSystemControl.h.

            {
    BRAKES_OK,
    PRESSURE_UNDER_LIMIT,
    PRESSURE_OVER_LIMIT,
    PRESSURE_SENSOR_ERROR,
    TEMPERATURE_OVER_LIMIT,
    TEMPERATURE_SENSOR_ERROR
} BrakeSystemStatus;

Function Documentation

activateBrakeLight()

void activateBrakeLight

(

BrakeSystemControl *

bsc

)

Checks whether the line pressure is higher than the activation point specified by the user.

Parameters

bsc	A pointer to the BrakeControl structure.

Definition at line 28 of file BrakeSystemControl.c.

                                                {
    if (getBrakePressure(bsc -> frontPressure) > bsc -> brakeLightActivationPoint || getBrakePressure(bsc -> rearPressure) > bsc -> brakeLightActivationPoint){
        bsc -> brakeLightActive = 1;
        return;
    }
    bsc -> brakeLightActive = 0;
    return;
}

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brakeSafteyCheck()

int brakeSafteyCheck

(

void *

bsc

)

Checks the saftey of the braking system.

Parameters

bsc	A pointer to the BrakeControl structure.

Definition at line 65 of file BrakeSystemControl.c.

                               {
    BrakeSystemControl *bscPtr = (BrakeSystemControl*)bsc;
    if (bscPtr->base.num_monitors == 0){
        printf("No monitors set for Brake System Control\n");
        return FAILURE;
    }
    else if (bscPtr->status != BRAKES_OK){
        printf("Brake System is not in a safe state\n");
        return FAILURE;
    }
    return SUCCESS;
}

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checkSensorLimits()

BrakeSystemStatus checkSensorLimits

(

BrakeSystemControl *

bsc

)

Checks if the brake system is within the defined limits and desired ranges.

Parameters

bsc	A pointer to the BrakeControl structure.

Definition at line 46 of file BrakeSystemControl.c.

                                                            {
    float front = getBrakePressure(bsc -> frontPressure);
    float rear = getBrakePressure(bsc -> rearPressure);
    float temp = getTemperatureFahrenheit(bsc -> temperature);
    
    if (front > bsc -> maxPressure || rear > bsc -> maxPressure){
        return PRESSURE_OVER_LIMIT;
    }
    else if (front > bsc -> minPressure || rear > bsc -> minPressure){
        return PRESSURE_UNDER_LIMIT;
    }
    else if (temp > bsc -> maxTemperatureAllowed){
        return TEMPERATURE_OVER_LIMIT;
    }
    else if (temp < 0){
        return TEMPERATURE_SENSOR_ERROR;
    }
}

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inHeavyBreaking()

void inHeavyBreaking

(

BrakeSystemControl *

bsc

)

Checks whether the line pressure is higher than the activation point specified by the user.

Parameters

bsc	A pointer to the BrakeControl structure.

Definition at line 37 of file BrakeSystemControl.c.

                                             {
    if (getBrakePressure(bsc -> frontPressure) > bsc -> heavyBrakingActivationPoint || getBrakePressure(bsc -> rearPressure) > bsc -> heavyBrakingActivationPoint){
        bsc -> heavyBraking = 1;
        return;
    }
    bsc -> heavyBraking = 0;
    return;
}

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initBrakeSystemControl()

void initBrakeSystemControl	(	BrakeSystemControl *	bsc,
		int	hz,
		int	maxTemp,
		int	brakeLightActivationPoint,
		int	heavyBrakingActivationPoint,
		int	fbp_channel,
		int	rbp_channel,
		int	temp_channel
	)

Initializes the Braking System with initial settings.

Parameters

bsc	A pointer to the BrakeControl structure.
hz	Rate at which the sensorors are called (in hz).
maxTemp	The maximum temperature limit set for the system (in farenheight).
brakeLightActivationPoint	At what voltage the brake light will activate.
heavyBrakingActivationPoint	At what voltage the system recognises "heavy braking".
fbp_channel	The channel number for the front brake pressure sensor
rbp_channel	The channel number for the rear brake pressure sensor
temp_channel	The channel number for the temperature sensor

Definition at line 6 of file BrakeSystemControl.c.

                                                                                                                                                                                             {
    initControllerSystem(&bsc-> base, "Brake System Control", hz, c_BRAKES);
    bsc -> maxTemperatureAllowed = maxTemp;
    initBrakePressure(bsc -> frontPressure, hz, fbp_channel);
    initBrakePressure(bsc -> rearPressure, hz, rbp_channel);
    bsc -> minPressure = 0;
    bsc -> maxPressure = 2000;
    initTemperature(bsc -> temperature, hz, temp_channel);
    bsc -> brakeLightActivationPoint = brakeLightActivationPoint;
    bsc -> brakeLightActive = 0;
    bsc -> heavyBrakingActivationPoint = heavyBrakingActivationPoint;
    bsc -> heavyBraking = 0;
    bsc -> status = BRAKES_OK;
    bsc -> base.safety = brakeSafteyCheck;
}

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setFrontPressure()

void setFrontPressure	(	BrakeSystemControl *	bsc,
		float	pressure
	)

Definition at line 80 of file BrakeSystemControl.c.

                                                              {
    bsc -> frontPressure -> pressure = pressure;
}

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setRearPressure()

void setRearPressure	(	BrakeSystemControl *	bsc,
		float	pressure
	)

Definition at line 84 of file BrakeSystemControl.c.

                                                             {
    bsc -> rearPressure -> pressure = pressure;
}

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setSensorReadings()

void setSensorReadings	(	BrakeSystemControl *	bsc,
		float	frontPressure,
		float	rearPressure,
		float	temperaure
	)

Updates BrakeSystemStatus with current sensor data.

Parameters

bsc	A pointer to the BrakeControl structure.
frontPressure	The reading from the front brake line pressure sensor (in psi).
rearPressure	The reading from the rear brake line pressure sensor (in psi).
temperature	The reading from the brake rotor temperature sensor (in farenheight).

Definition at line 22 of file BrakeSystemControl.c.

                                                                                                           {
    updateBrakePressure(bsc -> frontPressure);
    updateBrakePressure(bsc -> rearPressure);
    updateTemperature(bsc -> temperature);
}

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setTemperature()

void setTemperature	(	BrakeSystemControl *	bsc,
		float	temperature
	)

Definition at line 88 of file BrakeSystemControl.c.

                                                               {
    bsc -> temperature -> degrees = temperature;
}

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