MikroC simple keypad problem

[skyassasin16]

There is an example in help file of mikroC in keypad library, I have tried it but i notices that after a few seconds, the LCD is like refreshing, deleting everything i typed and then like running the program from the start again. The number of key pressed counter is going back to 1. And also, i'd like to know how can I continously fill up the next space in the right then transforming all you typed into an integer, cause i am working on a input password project.

Thanks a lot pros!:smile:

 

[microlab]

hi

post the software here
we are not free enough to down load the microC and do it for you

regards

ml

 

[lockman_akim]

send your code..it will help someone to help u..

 

[ansarmytheen]

Hai,

You can use manual key reading program using mikroc rather than Mikroc Lib program.

 

[chaudhryali55]

as m also was working on this project and i used mikro c compiler....the built in lib for the keypad does not work for other except the mikro c deveolpment board..i tried a much....but all in vain....if you have done it thn u should be great.......

---------- Post added at 15:37 ---------- Previous post was at 15:33 ----------

this is code i think which involves the lcd and 4x4 keypad...

/*
 * Project name:
     Keypad_Test (Demonstration of usage of the Keypad Library)
 * Copyright:
     (c) Mikroelektronika, 2008.
 * Revision History:
     20080930:
       - initial release;
 * Description:
      A simple example of using the keypad library for mikroC PRO for PIC.
      It supports keypads with 1..4 rows and 1..4 columns. The code being 
      returned by the Keypad_Key_Press() and Keypad_Key_Click() functions is
      in range from 1..16. In this example, the code returned by the keypad 
      library functions is transformed into ASCII codes [0..9,A..F]. 
      In addition, a small single-byte counter displays in the second LCD row 
      number of key presses.
 * Test configuration:
     MCU:             PIC16F887
     Dev.Board:       EasyPIC5
     Oscillator:      HS, 08.0000 MHz
     Ext. Modules:    LCD 2x16, Keypad 4x3 or 4x4 module at PORTC
     SW:              mikroC PRO for PIC
 * NOTES:
     - Pull-down PORTC (place jumper J3 in lower position).
     - Turn on LCD backlight SW9.7 (board specific)
 */
 
unsigned short kp, cnt, oldstate = 0;
char txt[6];

// Keypad module connections
char  keypadPort at PORTC;
// End Keypad module connections

// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;

sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections

void main() {
  cnt = 0;                                 // Reset counter
  Keypad_Init();                           // Initialize Keypad                              
  ANSEL  = 0;                              // Configure AN pins as digital I/O
  ANSELH = 0;
  Lcd_Init();                              // Initialize LCD
  Lcd_Cmd(_LCD_CLEAR);                     // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);                // Cursor off
  Lcd_Out(1, 1, "1");
  Lcd_Out(1, 1, "Key  :");                 // Write message text on LCD
  Lcd_Out(2, 1, "Times:");

  do {
    kp = 0;                                // Reset key code variable

    // Wait for key to be pressed and released
    do
      // kp = Keypad_Key_Press();          // Store key code in kp variable
      kp = Keypad_Key_Click();             // Store key code in kp variable
    while (!kp);
   // Prepare value for output, transform key to it's ASCII value
    switch (kp) {
      //case 10: kp = 42; break;  // '*'   // Uncomment this block for keypad4x3
      //case 11: kp = 48; break;  // '0'   
      //case 12: kp = 35; break;  // '#'
      //default: kp += 48;

      case  1: kp = 49; break; // 1        // Uncomment this block for keypad4x4
      case  2: kp = 50; break; // 2
      case  3: kp = 51; break; // 3
      case  4: kp = 65; break; // A
      case  5: kp = 52; break; // 4
      case  6: kp = 53; break; // 5
      case  7: kp = 54; break; // 6
      case  8: kp = 66; break; // B        
      case  9: kp = 55; break; // 7
      case 10: kp = 56; break; // 8
      case 11: kp = 57; break; // 9
      case 12: kp = 67; break; // C
      case 13: kp = 42; break; // *
      case 14: kp = 48; break; // 0
      case 15: kp = 35; break; // #
      case 16: kp = 68; break; // D

    }

    if (kp != oldstate) {                  // Pressed key differs from previous
      cnt = 1;
      oldstate = kp;
      }
    else {                                 // Pressed key is same as previous
      cnt++;
      }

    Lcd_Chr(1, 10, kp);                    // Print key ASCII value on LCD

    if (cnt == 255) {                      // If counter varialble overflow
      cnt = 0;
      Lcd_Out(2, 10, "   ");
      }

    WordToStr(cnt, txt);                   // Transform counter value to string
    Lcd_Out(2, 10, txt);                   // Display counter value on LCD
  } while (1);
}

 

[skyassasin16]

Here it is:

unsigned short kp, cnt;
char txt[5];

void main() {
cnt = 0;
Keypad_Init(&PORTC);
Lcd_Init(&PORTB); // Initialize LCD on PORTC
Lcd_Cmd(LCD_CLEAR); // Clear display
Lcd_Cmd(LCD_CURSOR_OFF); // Cursor off

Lcd_Out(1, 1, "Key :");
Lcd_Out(2, 1, "Times:");

do {
kp = 0;

//--- Wait for key to be pressed
do
//--- un-comment one of the keypad reading functions
kp = Keypad_Released();
//kp = Keypad_Read();
while (!kp);

cnt++;

//--- prepare value for output
if (kp > 10)
kp += 54;
else
kp += 47;

//--- print it on LCD
Lcd_Chr(1, 10, kp);
WordToStr(cnt, txt);
Lcd_Out(2, 10, txt);

} while (1);
}//~!