LW-MW-FM avec
with derivative class

Complete program recommended

This program is completely under interruption, and releases loop which can be used to do something else.

// This program will simulate an MW-LW-FM choice. We choose the range by
// wired buttons on A0, A1, and A2. The console tells us about changes
// We will use a class derived from MtradioButton

#include <MTobjects.h> // V1.0.6 See http://arduino.dansetrad.fr/en/MTobjects

const uint8_t PIN_BUTTON_MW = A0; // Button wired between A0 and GND
const uint8_t PIN_BUTTON_LW = A1; // Button wired between A1 and GND
const uint8_t PIN_BUTTON_FM = A2; // Button wired between A2 and GND

// Definition of a new class that overloads onSelect and onUnselect
class MyButton: public MTradioButton
{
 public:
  MyButton (uint8_t pin, String p_name, byte value) // New constructor
    :MTradioButton(pin, NO_ACTION, NO_ACTION, HIGH if_not_pressed, value), name(p_name)
    {};
 private:
  String name; // Name that will be displayed on the console
  virtual void onSelect(void) // Overload function which informs the selection
  {
    Serial.print("We just chosen ");
    Serial.println(name);
  }
  virtual void onUnselect(void) // Function to be overloaded which informs deselection
  {
    Serial.print("We have just canceled ");
    Serial.println(name);
  }
};



// Implementation of the buttons
MyButton BoutonMW(PIN_BUTTON_MW, "MW", RADIO_BUTTON_0);
MyButton BoutonLW(PIN_BUTTON_LW, "LW", RADIO_BUTTON_1);
MyButton BoutonFM(PIN_BUTTON_FM, "FM", RADIO_BUTTON_2);



void setup()
{
  Serial.begin(115200);
 ButtonMW.select(); // So that there is at least one selected range
  delay(16 milli_seconds); // So we are sure that the button is selected (possible delay in taking into account 16ms)
}


String names[3] = {"MW", "LW", "FM"};

void loop()
{
  Serial.print("The current range is ");
  Serial.println(names[getMTradioButtonValue()]);
  delay(2000 milli_seconds); // To have a display that does not parade too quickly
}