[medo]

char keypadPort at PORTd;

// Start LCD module connections

sbit LCD_RS at Rb0_bit;

sbit LCD_EN at Rb1_bit;

sbit LCD_D4 at Rb4_bit;

sbit LCD_D5 at Rb5_bit;

sbit LCD_D6 at Rb6_bit;

sbit LCD_D7 at Rb7_bit;

sbit LCD_RS_Direction at TRISb0_bit;

sbit LCD_EN_Direction at TRISb1_bit;

sbit LCD_D4_Direction at TRISb4_bit;

sbit LCD_D5_Direction at TRISb5_bit;

sbit LCD_D6_Direction at TRISb6_bit;

sbit LCD_D7_Direction at TRISb7_bit;

// End LCD module connections

int x,i;

char fromuser[4];

 int kb;

 void main()

 {

  adcon1=7;

  lcd_init();

  keypad_init();

 

  lcd_out(1,1,”welcome”);

  delay_ms(2000);

  lcd_cmd(1);

 

  do{

      i=0;

     

      kb=keypad_key_press();

      fromuser=kb;

      i++;

  }while(kb!=4);

  for(x=0;x<4;x++){lcd_chr(1,x+1,fromuser[x]+48);}

 }//end main

[medo]

Dear Alex , 

the keypad 4×4 

 

 

count from 7 its Ascii value is 1 

button 4 …ascii value 2

button 1 …ascii value 3

button on/c …ascii value 4

button 8 …ascii value 5

button 5…ascii value 6

button 2 …ascii value 7

 

button 0 …ascii value 8

 

button 9 …ascii value 9

 

button 6 …ascii value 10

 

button 3 …ascii value 11

 

button = …ascii value 12

 

button % …ascii value 13

 

button x…ascii value 14

 

button – …ascii value 15

 

button + …ascii value 16

 

for show the number to screen i convert to ascii by adding 48 

or using 

inttostr function

 

 

after i press 4 button , 

then later the lcd show the number 4000

 

i dont know whats up

 

thanks for u help

 

 

 

 

 

 

[medo]

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[Author]

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