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Здравствуйте!

Есть ардуино мега, ЛСД на шилде с 6-ю кнопками. подключен драйвер шагового двигателя и сам шаговый двигатель.

когда я запускаю скетч шагового двигателя. все работает о.к. но проблема что я немогу склеить скетч работы шагового с скетчем меню дисплея...

Вот склееный скетч:

#include <LiquidCrystal.h>
#include <Stepper.h>
//Подключение шагового двигателя
const int stepsPerRevolution = 12800; // кол-во импульсов на оборот 
Stepper myStepper(stepsPerRevolution, 19, 21); // Подключение ШД
 
// Initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
 
//States for the menu.
int currentMenuItem = 0;
int lastState = 0;
int motor=0;


 
void setup() {
   //Set the characters and column numbers.
   lcd.begin(16, 2);
   //Print default title.
   clearPrintTitle();
   //Параметры шагового двигателя
//   pinMode(pul, OUTPUT);     
 // pinMode(dir, OUTPUT);
  
}
 
void loop()


   

{
  //Call the main menu.
  mainMenu();
}
 
void mainMenu() {
  //State = 0 every loop cycle.
  int state = 0;
  //Refresh the button pressed.
  int x = analogRead (0);
  //Set the Row 0, Col 0 position.
  lcd.setCursor(0,0);
 
  //Check analog values from LCD Keypad Shield
  if (x < 100) {
    //Right
    state = 4;
  } else if (x < 200) {
   //Up
    state = 1;
  } else if (x < 400){
   //Down
    state = 2;
  } else if (x < 600){
    //Left
    state = 5;
  } else if (x < 800){
    //Select
    state = 3;
  }
 
  //If we are out of bounds on th menu then reset it.
  if (currentMenuItem < 0 || currentMenuItem > 13) {
   currentMenuItem = 0; 
  
  }
 
   //If we have changed Index, saves re-draws.
   if (state != lastState) {
      if (state == 1) {
         //If Up
          currentMenuItem = currentMenuItem - 1; 
          displayMenu(currentMenuItem);
      } else if (state == 2) {
         //If Down
          currentMenuItem = currentMenuItem + 1;  
          displayMenu(currentMenuItem);
      } else if (state == 3) {
         //If Selected
         motor=0;
        //selectMenu(currentMenuItem); 
      } else if (state == 4) {
         //If RIGHT
        rightMenu(currentMenuItem); 
      } else if (state == 5) {
         //If LEFT
        leftMenu(currentMenuItem); 
      }


      
      //Save the last State to compare.
      lastState = state;
   } 
   //Small delay
  delay(5);
}
 
//Display Menu Option based on Index.
void displayMenu(int x) {
     switch (x) {
      case 1:
        clearPrintTitle();
        lcd.print ("0.01");
        break;
      case 2:
        clearPrintTitle();
        lcd.print ("0.015");
        break;
       case 3:
        clearPrintTitle();
        lcd.print ("0.02");
        break;
      case 4:
        clearPrintTitle();
        lcd.print ("0.03");
        break;
       case 5:
        clearPrintTitle();
        lcd.print ("0.04");
        break;
       case 6:
        clearPrintTitle();
        lcd.print ("0.06");
        break;
       case 7:
        clearPrintTitle();
        lcd.print ("0.08");
        break;
       case 8:
        clearPrintTitle();
        lcd.print ("0.1");
        break;
       case 9:
        clearPrintTitle();
        lcd.print ("0.13");
        break;
       case 10:
        clearPrintTitle();
        lcd.print ("0.15");
        break;
        case 11:
        clearPrintTitle();
        lcd.print ("0.18");
        break;
        case 12:
        clearPrintTitle();
        lcd.print ("0.20");
        break;
        case 13:
        clearPrintTitle();
        lcd.print ("0.22");
        break;
    }
}
 
//Print a basic header on Row 1.
void clearPrintTitle() {
lcd.setCursor(0,0);
  lcd.print("Podacha mm/ob");
 lcd.setCursor(0,1); 
}
 
//Show the rightMenu on Screen.
void   rightMenu(int x) {
   switch (x) {
      case 1:
        clearPrintTitle();
        lcd.print ("0.01 >>");
     //  myStepper.setSpeed(400);
    // step 1 of a revolution:
   // myStepper.step(stepsPerRevolution );
      motor=1;
      void motormenu();
      lcd.setCursor(10,1);
      lcd.print (motor);
      
      break;
  
        //Call the function that belongs to Option 1
        
      case 2:
        clearPrintTitle();
        lcd.print ("0.015 >>");
        //Call the function that belongs to Option 2
       break;
       case 3:
        clearPrintTitle();
        lcd.print ("0.02 >>");
        //Call the function that belongs to Option 3
        break;
      case 4:
        clearPrintTitle();
        lcd.print ("0.03 >>");
        //Call the function that belongs to Option 4
        break;
        case 5:
        clearPrintTitle();
        lcd.print ("0.04 >>");
        //Call the function that belongs to Option 5
        break;
        case 6:
        clearPrintTitle();
        lcd.print ("0.06 >>");
        //Call the function that belongs to Option 6
        break;
        case 7:
        clearPrintTitle();
        lcd.print ("0.08 >>");
        //Call the function that belongs to Option 7
        break;
        case 8:
        clearPrintTitle();
        lcd.print ("0.1 >>");
        //Call the function that belongs to Option 8
        break;
        case 9:
        clearPrintTitle();
        lcd.print ("0.13 >>");
        //Call the function that belongs to Option 9
        break;
        case 10:
        clearPrintTitle();
        lcd.print ("0.15 >>");
        //Call the function that belongs to Option 10
        break;
        case 11:
        clearPrintTitle();
        lcd.print ("0.18 >>");
        //Call the function that belongs to Option 11
        break;
        case 12:
        clearPrintTitle();
        lcd.print ("0.2 >>");
        //Call the function that belongs to Option 12
        break;
        case 13:
        clearPrintTitle();
        lcd.print ("0.22 >>");
        //Call the function that belongs to Option 13
        break;
    }
}
    //Show the leftMenu on Screen.
void   leftMenu(int x) {
   switch (x) {
      case 1:
        clearPrintTitle();
        lcd.print ("0.01 <<");
        motor=21;
        void motormenu();
         lcd.setCursor(10,1);
      lcd.print (motor);
        // myStepper.setSpeed(50);
    // step 1 of a revolution:
    //myStepper.step(-stepsPerRevolution );
  break;
      case 2:
        clearPrintTitle();
        lcd.print ("0.015 <<");
        //Call the function that belongs to Option 2
        break;
       case 3:
        clearPrintTitle();
        lcd.print ("0.02 <<");
        //Call the function that belongs to Option 3
        break;
      case 4:
        clearPrintTitle();
        lcd.print ("0.03 <<");
        //Call the function that belongs to Option 4
        break;
        case 5:
        clearPrintTitle();
        lcd.print ("0.04 <<");
        //Call the function that belongs to Option 5
        break;
        case 6:
        clearPrintTitle();
        lcd.print ("0.06 <<");
        //Call the function that belongs to Option 6
        break;
        case 7:
        clearPrintTitle();
        lcd.print ("0.08 <<");
        //Call the function that belongs to Option 7
        break;
        case 8:
        clearPrintTitle();
        lcd.print ("0.1 <<");
        //Call the function that belongs to Option 8
        break;
        case 9:
        clearPrintTitle();
        lcd.print ("0.13 <<");
        //Call the function that belongs to Option 9
        break;
        case 10:
        clearPrintTitle();
        lcd.print ("0.15 <<");
        //Call the function that belongs to Option 10
        break;
        case 11:
        clearPrintTitle();
        lcd.print ("0.18 <<");
        //Call the function that belongs to Option 11
        break;
        case 12:
        clearPrintTitle();
        lcd.print ("0.2 <<");
        //Call the function that belongs to Option 12
        break;
        case 13:
        clearPrintTitle();
        lcd.print ("0.22 <<");
        //Call the function that belongs to Option 13
        break;
       }
}
//********************Режим работы шагового двигателя

void motormenu()
{ 
  
    if (motor==1)  {
  
     myStepper.setSpeed(400);
    // step 1 of a revolution:
    myStepper.step(stepsPerRevolution );
      }
        else if (motor==21)      {
    myStepper.setSpeed(200);
    // step 1 of a revolution:
    myStepper.step(-stepsPerRevolution );
     }
}

При нажатии в leftMenu кнопки влево переменная motor меняет значение. и по идее дожно запускаться motormenu и крутить двигатель с определенными оборотами, а он не крутится.

Подскажите пожалуйста что я сделал не так?