how to correctly pull a function

Projects Programming
1

The run down. i am making a system to automate the manual hvac system in my car using servo motors, lcd screen, yet to be determined amount of buttons for random features, and a bunch of replacement knobs that are gears to engage with a set of gears mounted to the servos.
my problem is really with the menu system i am trying to build.
i am using MenuBackend in my sketch.

heres das sketch so far. it is work in progress obviously. this does not compile

#include <MenuBackend.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
/*
        root
 Climate Control                  
 auto        Set Temp         
 man         Temp        Up
                         Down
 Mode        Off
             Max AC
             Norm AC  
             Vent
             Defrost
             Floor
             Mix           
 
 */


byte upArrow[8] = {
  B00000,  
  B00000,
  B00100,
  B01010,
  B10001,
  B00000,}
;




MenuBackend menu = MenuBackend(menuUseEvent, menuChangeEvent);
MenuItem miCC = MenuItem("CC");

MenuItem miAuto = MenuItem("Auto");
MenuItem miSetTemp = MenuItem("Set Temp");
MenuItem miSemiAuto = MenuItem("Semi Auto");
MenuItem miMan = MenuItem("Manual");  
MenuItem miTemp = MenuItem("Temp");
MenuItem miManUp = MenuItem("Up");
MenuItem miManDwn = MenuItem("Down");
MenuItem miMode = MenuItem("Mode");
MenuItem miOff = MenuItem("Off");
MenuItem miMaxAC = MenuItem("Max");
MenuItem miNormAC = MenuItem("NormAC");
MenuItem miFloor = MenuItem("Floor");
MenuItem miDefrost = MenuItem("Defrost");
MenuItem miMix = MenuItem("Mix");
MenuItem miVent = MenuItem("Vent");

void menuUseEvent(MenuUseEvent used)
{
  if (used.item == miCC)  {
    lcd.clear();
    lcd.print("Climate");
    lcd.setCursor(0,1);
    lcd.print("Control");
    lcd.setCursor(11,0);
    lcd.write(byte(0));
    lcd.print("Auto");
    lcd.setCursor(10,1);
    lcd.print("Manual");
  }

}


void menuChangeEvent(MenuChangeEvent changed)
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("     ");
  lcd.print(changed.to.getName());
  delay(500);
  Serial.print("Menu change ");
  Serial.print(changed.from.getName());
  Serial.print(" ");
  Serial.println(changed.to.getName());
}

void menuSetup()
{
  menu.getRoot().add(miCC); 
  miCC.add(miAuto);
  miAuto.add(miMan);
  miMan.add(miSemiAuto);

  miAuto.addRight(miSetTemp);

  miMan.addRight(miTemp);
  miTemp.addRight(miMode);
  miTemp.add(miManUp);
  miManUp.add(miManDwn);
  miMode.add(miOff);
  miOff.add(miVent);
  miVent.add(miNormAC);
  miNormAC.add(miMaxAC);
  miMaxAC.add(miFloor);
  miFloor.add(miMix);
  miMix.addRight(miDefrost);
}



int lcd_key     = 0;
int adc_key_in  = 0;
#define btnRIGHT  0
#define btnUP     1
#define btnDOWN   2
#define btnLEFT   3
#define btnSELECT 4
#define btnNONE   5

int read_LCD_buttons()
{
  adc_key_in = analogRead(0);    
  if (adc_key_in > 1000) return btnNONE;
  if (adc_key_in < 50)   return btnRIGHT;  
  if (adc_key_in < 250)  return btnUP; 
  if (adc_key_in < 450)  return btnDOWN; 
  if (adc_key_in < 650)  return btnLEFT; 
  if (adc_key_in < 850)  return btnSELECT;  
  return btnNONE;  // when all others fail, return this...
}
long timeSincePush = 0;
long timeNoPush = 0;

int rightBtn;





void getButton ()
{
  int currentMenu;
  lcd_key = read_LCD_buttons();  // read the buttons=
  switch (lcd_key)               // depending on which button was pushed, we perform an action
  {
  case btnRIGHT:
    {
      if (currentMenu.item == miMan)  {
        lcd.clear();
        lcd.print("i win");}
      timeSincePush = millis();
      break;
    }
  case btnLEFT:
    {
      timeSincePush = millis();
      break;
    }
  case btnUP:
    {
      timeSincePush = millis();
      break;
    }
  case btnDOWN:
    {
      timeSincePush = millis();
      break;
    }
  case btnSELECT:
    {
      timeSincePush = millis(); 
      break;
    }
  case btnNONE:
    {
      timeNoPush = millis();

      break;
    }
  }
}



void setup()
{
  lcd.createChar(0, upArrow);
  Serial.begin(9600);
  menuSetup();
  lcd.begin(16, 2);              // start the library
  lcd.setCursor(0,0);
  lcd.print(" Welcome Justin"); // print a simple message
  delay(2500);
  lcd.setCursor(0,0);
  lcd.print("Climate  Control");
  lcd.setCursor(11,1);
  lcd.print("V1.00");
  delay(5000);


}


void loop()
{


  getButton();

}

so what i am wanting to do is call that "used" from menuUseEvent function so i can fudge the output of my buttons to do something other then travel menu. ie when in temp menu i want up and down to change temp up and down. in my posted code you can see one of my failed attempts to change the output of rightBtn to display some victory text of my/our beating this small coding battle

finally my question is..... how should i be calling this function out in my getButton function. i believe i am wanting to use either "item" or "to" to be able to manipulate the menus how i would like to.
there are also functions like getCurrent and getRoot i would like to be able to call.

2

so what i am wanting to do is call that "used" from menuUseEvent function

You should post a link to the library. Clearly, the MenuUseEvent object has some fields and/or methods associated with it, if the first line of code in the menuUseEvent() function is correct.

Whether the menuUseEvent() method does anything, whether it ever gets called, whether the arguments are correct, or what the argument actually means are all unclear, without a link to the library.

Use the Insert a link icon, two to the left of the green G, to add a link.

3
4

There is an example (rather stupid one, but there is one) with that library. It contains:

	if (used.item == setDelay) //comparison agains a known item
        {
           Serial.println("menuUseEvent found Dealy (D)");
        }

In the block after the if statement, you would add:

   setDelay();

to actually call a function.

The name of the function to call when a menu item is selected generally has little to do with the menu text. It certainly has nothing to do with the address of the function, which is what you actually need to call the function.

5

Thank you Paul.

I think I have found out the function and way to write it that may work.

If (menu.getCurrent == MiMan){
}

I think thus should allow me to call out what menu screen I am in and modify parameters based on menu location rather then being stuck with a single button function for all the menu screens.