App.h File Reference

#include "../AnalogSensor.h"
#include "../../Utils/Telemetry.h"

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Classes
struct	App

Functions
void	initApp (App *app, int hz, int channel, char *name)
	Initializes the APP with the given frequency and channel. More...
float	getAppPosition (App *app)
	Gets the current position of the APP. More...
void	updateApp (App *app)
	Updates the APP data. More...
float	transferFunctionApp (float rawVal)
	Converts raw APP data to a meaningful position value. More...
void	setAppPos (App *app, float pos)
	Sets pedal position in app sensor. More...

Function Documentation

getAppPosition()

float getAppPosition

(

App *

app

)

Gets the current position of the APP.

Parameters

app	Pointer to the App structure to query.

Returns

The current position of the APP.

Definition at line 17 of file App.c.

                               {
    return app->position;
}

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initApp()

void initApp	(	App *	app,
		int	hz,
		int	channel,
		char *	name
	)

Initializes the APP with the given frequency and channel.

Parameters

app	Pointer to the App structure to initialize.
hz	The frequency in Hertz at which the APP operates.
channel	The analog channel the APP is connected to.
name	The name of the sensor (default is "App").

Definition at line 6 of file App.c.

                                                        {
    initAnalogSensor(&app->base, name, hz, channel, app);
    app->position = 0;
    app->base.sensor.updateable.update = updateApp;
 
    // Register telemetry signal
    app->telem_raw = registerTelemetrySignal(name, TELEMETRY_SENSOR, UNIT_VOLTS, 1000/hz, 0.4f, 4.7f);
    app->telem_position = registerTelemetrySignal(name, TELEMETRY_SENSOR, UNIT_PERCENT, 1000/hz, 0.0f, 100.0f);
 
}

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setAppPos()

void setAppPos	(	App *	app,
		float	pos
	)

Sets pedal position in app sensor.

Note

For testing only

Parameters

app	Pointer to app sensor.
pos	Position to set on sensor.

transferFunctionApp()

float transferFunctionApp

(

float

rawVal

)

Converts raw APP data to a meaningful position value.

Parameters

rawVal

The raw data from the APP.

Returns

The converted APP position value.

Definition at line 41 of file App.c.

                                        {
    // This is a +-45 degree sensor
    if (rawVal < 0.5) {
        return -1;
    }
    else if (rawVal > 4.5) {
        return -2;
    }
    return (rawVal - 0.5)/4.0;
}

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updateApp()

void updateApp

(

App *

app

)

Updates the APP data.

Parameters

app	Pointer to the App structure to update.

Definition at line 21 of file App.c.

                         {
    // FIXME: Implement APP connection with stm
    float rawData = getAnalogSensorData(&app->base);
    // Send Telemetry float
    sendTelemetryValue(app->telem_raw, rawData);
    app->position = transferFunctionApp(rawData);
 
    // Send diagnostic info to the debugger
    if (app->position == -1) {
        sendMessage(app->base.sensor.updateable.name, MSG_WARNING, 
                   "APP reading below sensor minimum (%.3f V)", rawData);
    } else if (app->position == -2) {
        sendMessage(app->base.sensor.updateable.name, MSG_WARNING, 
                   "APP reading above sensor maximum (%.3f V)", rawData);
    }
 
    sendTelemetryValue(app->telem_position, app->position * 100); // Convert from 1-scale to percentage
 
}

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