GearCarIndicator rev_02

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    - Project: GearCarIndicator
    - Source Code compiled for: Arduino Uno
    - Source Code created on: 2023-09-17 15:54:59
    - Source Code generated by: James

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/********* User code review feedback **********
#### Feedback 1 ####
- static uint8_t gear shall be global.
********* User code review feedback **********/

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <Wire.h>
#include <EasyButton.h>
#include <Adafruit_SSD1306.h>

/****** SYSTEM REQUIREMENT 1 *****/
/* The display shows the indication of the gear from */
/* 1 to 6. At the startup, the system shall show "N" */
/* as Neutral. */
/****** SYSTEM REQUIREMENT 2 *****/
/* If the gear up switch is released, so the gear */
/* value shall be increased by 1. If the gear down */
/* switch is released, so the gear value shall be */
/* decreased by 1. */

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t GearUp_PushButton_PIN_D2 = 2;
const uint8_t GearDown_PushButton_PIN_D3 = 3;

/***** DEFINITION OF I2C PINS *****/
const uint8_t display_SSD1306OledDisplay_I2C_PIN_SDA_A4 = A4;
const uint8_t display_SSD1306OledDisplay_I2C_PIN_SCL_A5 = A5;
const uint8_t display_SSD1306OledDisplay_I2C_SLAVE_ADDRESS = 60;

// Instantiate EasyButton objects for gear up and gear down buttons
EasyButton gearUpButton(GearUp_PushButton_PIN_D2);
EasyButton gearDownButton(GearDown_PushButton_PIN_D3);

// Instantiate SSD1306 display object
Adafruit_SSD1306 display(display_SSD1306OledDisplay_I2C_SLAVE_ADDRESS);

// Global variable for gear value
static uint8_t gear = 0;

void setup(void)
{
    // put your setup code here, to run once:

    pinMode(GearUp_PushButton_PIN_D2, INPUT_PULLUP);
    pinMode(GearDown_PushButton_PIN_D3, INPUT_PULLUP);

    // Initialize the SSD1306 display
    display.begin(SSD1306_SWITCHCAPVCC, display_SSD1306OledDisplay_I2C_SLAVE_ADDRESS);
    display.clearDisplay();
    display.setTextColor(WHITE);
    display.setTextSize(2);
    display.setCursor(0, 0);
    display.println("N");
    display.display();
}

void loop(void)
{
    // put your main code here, to run repeatedly:

    // Check if the gear up button is released
    if (gearUpButton.isReleased())
    {
        // Increase the gear value by 1
        gear++;
        if (gear > 6)
        {
            gear = 6;
        }

        // Update the display with the new gear value
        display.clearDisplay();
        display.setCursor(0, 0);
        display.println(gear);
        display.display();
    }

    // Check if the gear down button is released
    if (gearDownButton.isReleased())
    {
        // Decrease the gear value by 1
        if (gear > 0)
        {
            gear--;
        }

        // Update the display with the new gear value
        display.clearDisplay();
        display.setCursor(0, 0);
        display.println(gear);
        display.display();
    }
}