Hi

I am trying to write to the individual digits of the “8 digit 7 segment display”, but I am not able to do it based on an array (or other variables).

I am able to write both to the individual segments and send doubles into it, but I would like the input to come from an array.

So instead of:

LEDDisplaySegmentObject.print("1","2","3","4","5","6","7","8")

I would like the individual segments to come from an array (that have 8 values that comes from the keypad):

LEDDisplaySegmentObject.print(KeypadInputArray[0], KeypadInputArray[1], KeypadInputArray[2], KeypadInputArray[3], KeypadInputArray[4], KeypadInputArray[5], KeypadInputArray[6], KeypadInputArray[7]);

The reason why I would like to do it as sending to the individual digits, is because the remaining figures should be “blank”.

I think that the problem is because of the value comming from the keypad is “char” and then it instert it in the print-command of the segment display as 48, 49, 50 etc. instead of 0, 1, 2 etc.

Thanks in advance - I have tried for five hours and I am getting kind of frustated.

/Henrik

// Libraries

#include <Keypad.h>

#include "DFRobot_LedDisplayModule.h"

// Set Up KeypadObject

const byte ROWS = 4;

const byte COLS = 3;

char keys[ROWS][COLS] = {

{'1','2','3'},

{'4','5','6'},

{'7','8','9'},

{'*','0','#'}

};

byte rowPins[ROWS] = {6, 11, 10, 8}; // Row pinouts of the keypad

byte colPins[COLS] = {7, 5, 9}; // Column pinouts of the keypad

// Create KeypadObject

Keypad KeypadObject = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

// Create LEDDisplaySegmentObject

DFRobot_LedDisplayModule LEDDisplaySegmentObject(&Wire, 0xE0);

// Create Variables

int KeypadInputNo = -1;

int KeypadInputArray[8] = {"","","","","4","","",""};

////////////////////////////////////////////

//// Setup

////////////////////////////////////////////

void setup(){

Serial.begin(9600);

/*Wait for the chip to be initialized completely, and then exit*/

while(LEDDisplaySegmentObject.begin(LEDDisplaySegmentObject.e8Bit) != 0)

{

Serial.println("Failed to initialize the chip , please confirm the chip connection!");

delay(1000);

}

//Set LEDDisplaySegmentObject Display Area

LEDDisplaySegmentObject.setDisplayArea(1,2,3,4,5,6,7,8);

//Clear LEDDisplaySegmentObject Display Area

LEDDisplaySegmentObject.print("","","","","","","","");

//Print "KLAR"

Serial.println("<<<KLAR>>>");

}

////////////////////////////////////////////

//// Main Loop

////////////////////////////////////////////

void loop(){

//Get CurrentKeyPress

char CurrentKeyPress = KeypadObject.getKey();

if (CurrentKeyPress){

if ((CurrentKeyPress == 48) || (CurrentKeyPress == 49) || (CurrentKeyPress == 50) || (CurrentKeyPress == 51) || (CurrentKeyPress == 52) || (CurrentKeyPress == 53) || (CurrentKeyPress == 54) || (CurrentKeyPress == 55) || (CurrentKeyPress == 56) || (CurrentKeyPress == 57)){

//Update KeypadInputNo

KeypadInputNo = KeypadInputNo + 1;

//Update KeypadInputArray

KeypadInputArray[KeypadInputNo] = CurrentKeyPress;

//Write Current Input To Serial Monitor

Serial.print("No. ");

Serial.print(KeypadInputNo);

Serial.print(" - ");

Serial.println(KeypadInputArray[KeypadInputNo]);

//Update Display LEDDisplaySegmentObject.print(KeypadInputArray[0],KeypadInputArray[1],KeypadInputArray[2],KeypadInputArray[3],KeypadInputArray[4],KeypadInputArray[5],KeypadInputArray[6],KeypadInputArray[7]);

//Check For Correct Input If Last Digit

if (KeypadInputNo == 7){

CheckForCorrectInput(KeypadInputNo);

}

}

}

}

////////////////////////////////////////////

//// Check For Correct Input

////////////////////////////////////////////

void CheckForCorrectInput(int& KeypadInputNo){

//Write Status To Serial Monitor

Serial.println("TEST FULL INPUT");

//Reset KeypadInputNo

KeypadInputNo = -1;

//Perform Code For Wrong Input

InputIsWrong();

}

////////////////////////////////////////////

//// Input Is Correct

////////////////////////////////////////////

void InputIsCorrect(){

}

////////////////////////////////////////////

//// Input Is Wrong

////////////////////////////////////////////

void InputIsWrong(){

//Make Display Flash For Two Seconds

LEDDisplaySegmentObject.flashHalfs();

delay(2000);

LEDDisplaySegmentObject.stopFlash();

//Reset Display

LEDDisplaySegmentObject.print("","","","","","","","");

}