**Voltage Display** rev_01

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    - Project: **Voltage Display**
    - Source Code NOT compiled for: Arduino Nano
    - Source Code created on: 2025-01-11 10:23:08

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Misura tensione da 0V a 15Vcc con st7735 */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <Adafruit_GFX.h>
#include <Adafruit_ST7735.h>

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

// Pin definitions for the ST7735 display
#define TFT_CS     10
#define TFT_RST    9
#define TFT_DC     8

// Create an instance of the ST7735 display
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

// Function to measure voltage
float measureVoltage(int pin) {
    int sensorValue = analogRead(pin); // Read the analog input
    float voltage = sensorValue * (15.0 / 1023.0); // Convert to voltage (0-15V)
    return voltage;
}

void setup(void) {
    // Initialize the display
    tft.initR(INITR_BLACKTAB);
    tft.fillScreen(ST7735_BLACK);
    tft.setTextColor(ST7735_WHITE);
    tft.setTextSize(1);
    tft.setCursor(0, 0);
    tft.println("Voltage Measurement:");
}

void loop(void) {
    // Measure voltage from analog pin A0
    float voltage = measureVoltage(A0);

    // Display the voltage on the screen
    tft.setCursor(0, 10);
    tft.fillRect(0, 10, 128, 10, ST7735_BLACK); // Clear previous voltage
    tft.print("Voltage: ");
    tft.print(voltage);
    tft.println(" V");

    delay(1000); // Update every second
}

/* END CODE */