"Temperature Conversion" rev_01

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    - Project: "Temperature Conversion"
    - Source Code NOT compiled for: Arduino Uno
    - Source Code created on: 2024-06-05 00:51:25

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* convert voltage in temperature */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void updateInputs(void);
void convertInputsFromRawToPhyData(void);
float lookup_phyData_from_voltage(float voltage, int segment_points, const float* voltage_phyData_lookup);
float map_f(float x, float in_min, float in_max, float out_min, float out_max);

/***** DEFINITION OF ANALOG INPUT PINS *****/
const uint8_t pot_Potentiometer_Vout_PIN_A0 = A0;

/****** DEFINITION OF ANALOG INPUTS CHARACTERISTIC CURVES *****/
const uint8_t SEGMENT_POINTS_voltage_Temperature_PIN_A0 = 2;
const float voltage_Temperature_PIN_A0_lookup[2][SEGMENT_POINTS_voltage_Temperature_PIN_A0] =
{
    {0.3, 0.5},  // Voltage [V]
    {0.2, 0.4}   // Temperature [°C]
};

/***** DEFINITION OF INPUT RAW VARIABLES *****/
/***** used to store raw data *****/
unsigned int pot_Potentiometer_Vout_PIN_A0_rawData = 0; // Analog Input

/***** DEFINITION OF INPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float pot_Potentiometer_Vout_PIN_A0_phyData = 0.0; // Temperature [°C]

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(pot_Potentiometer_Vout_PIN_A0, INPUT);
}

void loop(void)
{
    // put your main code here, to run repeatedly:
    updateInputs(); // Refresh input data
    convertInputsFromRawToPhyData(); // Transform raw data to physical data according to characteristic curve
}

void updateInputs()
{
    pot_Potentiometer_Vout_PIN_A0_rawData = analogRead(pot_Potentiometer_Vout_PIN_A0);
}

/* BLOCK lookup_phyData_from_voltage */
float lookup_phyData_from_voltage(float voltage, int segment_points, const float* voltage_phyData_lookup)
{
    // Search table for appropriate value.
    uint8_t index = 0;

    const float *voltagePointer = &voltage_phyData_lookup[0];
    const float *phyDataPointer = &voltage_phyData_lookup[segment_points];

    // Perform minimum and maximum voltage saturation based on characteristic curve
    voltage = min(voltage, voltagePointer[segment_points-1]);
    voltage = max(voltage, voltagePointer[0]);

    while( voltagePointer[index] <= voltage && index < segment_points )
        index++;

    // If index is zero, physical value is smaller than our table range
    if( index==0 )
    {
        return map_f( voltage,
            voltagePointer[0],   // X1
            voltagePointer[1],   // X2
            phyDataPointer[0],   // Y1
            phyDataPointer[1] ); // Y2
    }
    // If index is maxed out, phyisical value is larger than our range.
    else if( index==segment_points )
    {
        return map_f( voltage,
            voltagePointer[segment_points-2],   // X1
            voltagePointer[segment_points-1],   // X2
            phyDataPointer[segment_points-2],   // Y1
            phyDataPointer[segment_points-1] ); // Y2
    }
    // index is between 0 and max, just right
    else
    {
        return map_f( voltage,
            voltagePointer[index-1], // X1
            voltagePointer[index],    // X2
            phyDataPointer[index-1], // Y1
            phyDataPointer[index] );  // Y2
    }
}
/* END BLOCK lookup_phyData_from_voltage */

/* BLOCK map_f */
float map_f(float x, float in_min, float in_max, float out_min, float out_max)
{
    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
/* END BLOCK map_f */

/* BLOCK convertInputsFromRawToPhyData */
void convertInputsFromRawToPhyData()
{
    float voltage = 0.0;

    voltage = pot_Potentiometer_Vout_PIN_A0_rawData * (5.0 / 1023.0);
    pot_Potentiometer_Vout_PIN_A0_phyData = lookup_phyData_from_voltage(voltage, SEGMENT_POINTS_voltage_Temperature_PIN_A0, &(voltage_Temperature_PIN_A0_lookup[0][0]));

}
/* END BLOCK convertInputsFromRawToPhyData */

/* END CODE */