what is wrong in my simple keypad matrix sketch

Projects General Guidance
1

sir,
i made this sketch for Teensy LC board. using keypad library.
2&3 pins are on Rotatry Encoder.encoder is working good according to Sketch.
please look a bit on My sketch and attachment image .

#include <Keypad.h>
#include <Encoder.h> 


const byte ROWS = 3; //four rows
const byte COLS = 12; //four columns
char keys[ROWS][COLS] = {
{1,2,3,4,5,6,7,8,9,10,11,12},
{13,14,15,16,17,18,19,20,21,22,23,24},
{25,26,27,28,29,30,31,32,33,34,35,36}
};
byte rowPins[ROWS] = {4, 5, 6}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad kpd = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

Encoder myEnc(2, 3);      // which pins are connected to Encoder                                    
String msg;

void setup() {
  Mouse.screenSize(1366, 768);   //   Screen resolutions of your display (check from control panel)                                
 Serial.begin(9600);
   msg = "";
}

long oldPosition  = -999;  

void loop() {
  long newPosition = myEnc.read();   // ----------------------------------------------------------------------------------------------------------------------------------------- 
  if (newPosition > oldPosition) {   
    oldPosition = newPosition;        
     Mouse.moveTo(512, 54);    //  put here action to be, when Encoder is rotated upward  
    Mouse.scroll(-1);           
    Mouse.moveTo(345, 94);
   }
   if (newPosition < oldPosition) {   
    oldPosition = newPosition;       
     Mouse.moveTo(512, 54);     //  put here action to be, when Encoder is rotated Downward   
    Mouse.scroll(+1);          
    Mouse.moveTo(345, 94);
   }   // ----------------------------------------------------------------------------------------------------------------------------------------- -----------------------------
 if (kpd.getKeys())
    {
        for (int i=0; i<LIST_MAX; i++)   // Scan the whole key list.
        {
            if ( kpd.key[i].stateChanged )   // Only find keys that have changed state.
            {
                switch (kpd.key[i].kstate) {  // Report active key state : IDLE, PRESSED, HOLD, or RELEASED
                    case PRESSED:
                    msg = " PRESSED.";
                break;
                    case HOLD:
                    msg = " HOLD.";
                break;
                    case RELEASED:
                    msg = " RELEASED.";
                break;
                    case IDLE:
                    msg = " IDLE.";
                }
                Serial.print("Key ");
                Serial.print(kpd.key[i].kchar);
                Serial.println(msg);
            }
        }
    }

}

when 3rd rowPIN6 is connected to 11th colPIN17 or 12th colPIN18, output is coming like ($,#,") instead of 35 and 36.

please find where is wrong?????

matrix error.jpg
matrix error.jpg1366×1024 189 KB

2

Have you checked, for example, what the decimal value of the ASCII character "#" or "$" might be?

Also, review what is actually meant by the act that results in "coming out".

3

The hexadecimal value of '#' ought to be 23H and for '$', or '¤' vould be 24H if I'm not too corroded. Translate that to decimal!

5

The value is 23 and the 'H' is a standard way to point out that the value is expressed in hexadecimal notation. 'O' indicates Octal as the base and 'B' indicates binary.

7

As You know binary values concists of '0' and '1' only. 010111B would be, as I wrote, the same value as 23H. The notification You refere to I want to connect to the convention used in most computer programming languages to make the compiler happy.

8

Sir,. I am not expert in arduino . I want to use keypad library for 36 buttons in 3 rows and 12 col . If you can help me , please tell me . What changes in my sketch will return (kpd.key*.kchar) = 1....to ..36 , according to button. Not any other unknown character or value????? Because if*
kpd.key*.kchar = 1..to36. Can be used as integer ,if need ????*

9

Sir,. I am not expert in arduino.

We don't expect people to be, but we do expect people to follow up on suggestions, like that given in reply #1.

As the tiniest bit of Google research would lead you to understand, the decimal value of the ASCII character '#' is 35, hexadecimal value is 23. They are equivalent representations of the binary value stored in the computer.

If you use the command

Serial.print(kpd.key[i].kchar);

a # is printed.

You can use this command to see the decimal value

Serial.print(kpd.key[i].kchar, DEC);

or this command

Serial.print((int) kpd.key[i].kchar);

To see the hex value use this command:

Serial.print(kpd.key[i].kchar, HEX);

Homework: read up on variable types and casts.

10

Delta_G:
That's terribly ambiguous. How are we to know whether the B is a digit or means binary?

Not ambiguous at all: If it isn't followed by an H it means Binary. This was the style used by many assembly languages.

11

jremington:
We don't expect people to be, but we do expect people to follow up on suggestions, like that given in reply #1.

As the tiniest bit of Google research would lead you to understand, the decimal value of the ASCII character '#' is 35, hexadecimal value is 23. They are equivalent representations of the binary value stored in the computer.

If you use the command

Serial.print(kpd.key[i].kchar);

a # is printed.

You can use this command to see the decimal value

Serial.print(kpd.key[i].kchar, DEC);

or this command

Serial.print((int) kpd.key[i].kchar);

To see the hex value use this command:

Serial.print(kpd.key[i].kchar, HEX);

Homework: read up on variable types and casts.

thank you sir, jremington . Your functions helped me ,to get int value .and It is easy to use as single line.so thank you very much..