"Radio Frequency Display" rev_01

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    - Project: "Radio Frequency Display"
    - Source Code compiled for: Arduino Nano
    - Source Code created on: 2024-03-15 11:13:36

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* USB Connection to Kenwood TS-590SG radio.  Read */
    /* radio operating frequency from radio Serial Data */
    /* (115200 BAUD) Decide which Amateur radio Frequency */
    /* Band the radio's frequency is on, write radio */
    /* frequency and frequency Band to LCD Display */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

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

/******* SYSTEM REQUIREMENTS *******/
/****** SYSTEM REQUIREMENT 1 *****/
/* USB Connection to Kenwood TS-590SG radio. Read */
/* radio operating frequency from radio Serial Data */
/* (115200 BAUD) Decide which Amateur radio Frequency */
/* Band the radio's frequency is on, write radio */
/* frequency and frequency Band to LCD Display */
/************************************/

/***** DEFINITION OF I2C PINS *****/
const uint8_t LCD1602i2c_LCD1602I2C_I2C_PIN_SDA_A4 = A4;
const uint8_t LCD1602i2c_LCD1602I2C_I2C_PIN_SCL_A5 = A5;
const uint8_t LCD1602i2c_LCD1602I2C_I2C_SLAVE_ADDRESS = 0x27;

/****** DEFINITION OF LIBRARY CLASS INSTANCES *****/
LiquidCrystal_I2C lcd(LCD1602i2c_LCD1602I2C_I2C_SLAVE_ADDRESS, 20, 4); // Initialize the LiquidCrystal_I2C object

void setup(void)
{
  // put your setup code here, to run once:
  lcd.begin(20, 4); // Initialize the LCD with 20 columns and 4 rows
  lcd.backlight(); // Turn on the backlight
  Serial.begin(115200); // Initialize the Serial communication with the radio
}

void loop(void)
{
  // put your main code here, to run repeatedly:
  if (Serial.available())
  {
    delay(100);
    lcd.clear(); // Clear the LCD screen

    // Read the radio operating frequency from the Serial data
    float frequency = Serial.parseFloat();
    lcd.print("Frequency: ");
    lcd.print(frequency, 1); // Print the frequency with 1 decimal place

    // Decide which Amateur radio Frequency Band the radio's frequency is on
    String frequencyBand = "";
    if (frequency >= 1.8 && frequency <= 2.0) {
      frequencyBand = "160m";
    } else if (frequency >= 3.5 && frequency <= 4.0) {
      frequencyBand = "80m";
    } else if (frequency >= 7.0 && frequency <= 7.3) {
      frequencyBand = "40m";
    } else if (frequency >= 14.0 && frequency <= 14.35) {
      frequencyBand = "20m";
    } else if (frequency >= 21.0 && frequency <= 21.45) {
      frequencyBand = "15m";
    } else if (frequency >= 28.0 && frequency <= 29.7) {
      frequencyBand = "10m";
    } else {
      frequencyBand = "Unknown Band";
    }

    // Write the radio frequency and frequency band to the LCD display
    lcd.setCursor(0, 1);
    lcd.print("Band: ");
    lcd.print(frequencyBand);
  }
}