About LCD 2×16

[gana]

hi it is gana i have problem with Micro C here i have a error message ” Not enough RAM ‘? lstr 10_lcd” bolded one is name of the project i am using at89c52 help ??

 

AND CODE : i am just beginner you know kk what is the ”char txt[100];” can i delete it  what does it’s role?

 

char txt[100];
char keypadPort at P0;
sbit input4 at P1_4_bit;
sbit input3 at P2_7_bit;
sbit input2 at P2_6_bit;
sbit input1 at P1_3_bit;
sbit LCD_RS at P2_0_bit;
sbit LCD_EN at P2_1_bit;
sbit LCD_D4 at P2_2_bit;
sbit LCD_D5 at P2_3_bit;
sbit LCD_D6 at P2_4_bit;
sbit LCD_D7 at P2_5_bit;
// End Lcd module connections
void main() {
P1=0;
input2=0;
input3=0;
                          // Initialize Keypad
  Lcd_Init();                              // Initialize Lcd
  Lcd_Cmd(_LCD_CLEAR);                     // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);                // Cursor off
  Lcd_Out(1, 1, ” bvx yum  “);                 // Write message text on Lcd
  Lcd_Out(2, 1, ” ok bna “);
while (1){
if((input1==1)&&(input2==0) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”); }
else if ((input1==0)&&(input2==1) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xaalga “);}
else if ((input1==0)&&(input2==0) &&(input3==1)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “tsonx “);}
else if ((input1==0)&&(input2==0) &&(input3==0)&&(input4==1))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xodolgoon”);}
else if((input1==1)&&(input2==1)&&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”);
  Lcd_Out(2, 1, “xaalga “);}
else if((input1==1)&&(input2==0)&&(input3==1)&&(input4==0))
  {  Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”);
  Lcd_Out(2, 1, “tsonx “);
  }
else if((input1==1)&&(input2==0)&&(input3==0)&&(input4==1))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”);
  Lcd_Out(2, 1, “xodolgoon “);}
else if((input1==0)&&(input2==1)&&(input3==1)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “tsonx “);
  Lcd_Out(2, 1, “xaalga “);}
else if((input1==0)&&(input2==1)&&(input3==0)&&(input4==1))
  { Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xodolgoon “);
  Lcd_Out(2, 1, “xaalga “);}
else if((input1==0)&&(input2==0)&&(input3==1)&&(input4==1))
  { Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xodolgoon “);
  Lcd_Out(2, 1, “tsonx “);
  }
}   }

[romel emperado]

i dont know what is the function of that array in your code but base in your code posted above that declaration has no use and you can delete that..

 

 

pls start a simple display program before you complicate things in your code.

 

just display “test: in the LCD before adding complicated things in the code .

[gana]

ofcourse i did it works. but after i added some else if function then not enough RAM  error appears. it is just easy way to display if input becomes high.

[romel emperado]

are you using full version of mikkroC?   is that your complete source code?

[gana]

i do not know is it full? this is entire code kk

[romel emperado]

i dont understan you

 

you spend time making this project then now you dont know if it is full.. lol

 

 

[gana]

kk the program that i got from my friend i didnt ask from him. now he is not here kk so how can i find full it maybe sells right? do you have it? the give it for free kk 

[romel emperado]

by the way what you are trying to do with your program?

[gana]

trying to display with 2 line kk first time i told you i tryed to display using second line and it doesnt work. but now this code is so easy to display and first code is used 11pins of controller, but this guy using 7 pins ..by the way the code i sent today is works if i delete half of them like that :

 

char keypadPort at P0;
sbit input4 at P1_4_bit;
sbit input3 at P2_7_bit;
sbit input2 at P2_6_bit;
sbit input1 at P1_3_bit;
sbit LCD_RS at P2_0_bit;
sbit LCD_EN at P2_1_bit;
sbit LCD_D4 at P2_2_bit;
sbit LCD_D5 at P2_3_bit;
sbit LCD_D6 at P2_4_bit;
sbit LCD_D7 at P2_5_bit;
// End Lcd module connections
void main() {
P1=0;
input2=0;
input3=0;
                          // Initialize Keypad
  Lcd_Init();                              // Initialize Lcd
  Lcd_Cmd(_LCD_CLEAR);                     // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);                // Cursor off
  Lcd_Out(1, 1, ” bvx yum  “);                 // Write message text on Lcd
  Lcd_Out(2, 1, ” ok bna “);
while (1){
if((input1==1)&&(input2==0) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”); }
else if ((input1==0)&&(input2==1) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xaalga “);}

  }
}   }

 

but i need all codes of them to display nicely kk

 

[romel emperado]

so whats the problem of that code above? if you can display to 1st and 2nd line so what is the probem?

 

the code fo mikroC is working fine I used that many times…

 

you cannot have complete code you want because no one knows what you want.. from that example code of mikroC modify that and make accroding to your application..

[gana]

ok check this out : first code is fine but second code is not working and shows error like ( not enough RAM ) that is it. but first and second are same , i just added few else if command and others into first code not much so that s second code kk. now iwe have first and second codes below check and help me what is wrong..

1)

 

char keypadPort at P0;
sbit input4 at P1_4_bit;
sbit input3 at P2_7_bit;
sbit input2 at P2_6_bit;
sbit input1 at P1_3_bit;
sbit LCD_RS at P2_0_bit;
sbit LCD_EN at P2_1_bit;
sbit LCD_D4 at P2_2_bit;
sbit LCD_D5 at P2_3_bit;
sbit LCD_D6 at P2_4_bit;
sbit LCD_D7 at P2_5_bit;
// End Lcd module connections
void main() {
P1=0;
input2=0;
input3=0;
                          // Initialize Keypad
  Lcd_Init();                              // Initialize Lcd
  Lcd_Cmd(_LCD_CLEAR);                     // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);                // Cursor off
  Lcd_Out(1, 1, ” bvx yum  “);                 // Write message text on Lcd
  Lcd_Out(2, 1, ” ok bna “);
while (1){
if((input1==1)&&(input2==0) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”); }
else if ((input1==0)&&(input2==1) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xaalga “);}

  }
}   }

 

 

2)

 

char keypadPort at P0;
sbit input4 at P1_4_bit;
sbit input3 at P2_7_bit;
sbit input2 at P2_6_bit;
sbit input1 at P1_3_bit;
sbit LCD_RS at P2_0_bit;
sbit LCD_EN at P2_1_bit;
sbit LCD_D4 at P2_2_bit;
sbit LCD_D5 at P2_3_bit;
sbit LCD_D6 at P2_4_bit;
sbit LCD_D7 at P2_5_bit;
// End Lcd module connections
void main() {
P1=0;
input2=0;
input3=0;
                          // Initialize Keypad
  Lcd_Init();                              // Initialize Lcd
  Lcd_Cmd(_LCD_CLEAR);                     // Clear display
  Lcd_Cmd(_LCD_CURSOR_OFF);                // Cursor off
  Lcd_Out(1, 1, ” bvx yum  “);                 // Write message text on Lcd
  Lcd_Out(2, 1, ” ok bna “);
while (1){
if((input1==1)&&(input2==0) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”); }
else if ((input1==0)&&(input2==1) &&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xaalga “);}
else if ((input1==0)&&(input2==0) &&(input3==1)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “tsonx “);}
else if ((input1==0)&&(input2==0) &&(input3==0)&&(input4==1))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xodolgoon”);}
else if((input1==1)&&(input2==1)&&(input3==0)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”);
  Lcd_Out(2, 1, “xaalga “);}
else if((input1==1)&&(input2==0)&&(input3==1)&&(input4==0))
  {  Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”);
  Lcd_Out(2, 1, “tsonx “);
  }
else if((input1==1)&&(input2==0)&&(input3==0)&&(input4==1))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “gal”);
  Lcd_Out(2, 1, “xodolgoon “);}
else if((input1==0)&&(input2==1)&&(input3==1)&&(input4==0))
  {Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “tsonx “);
  Lcd_Out(2, 1, “xaalga “);}
else if((input1==0)&&(input2==1)&&(input3==0)&&(input4==1))
  { Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xodolgoon “);
  Lcd_Out(2, 1, “xaalga “);}
else if((input1==0)&&(input2==0)&&(input3==1)&&(input4==1))
  { Lcd_Cmd(_LCD_CLEAR);
  Lcd_Out(1, 1, “xodolgoon “);
  Lcd_Out(2, 1, “tsonx “);
  }
}   }

 

[romel emperado]

im very busy gana i cannot check each line of your code..

 

do it step by step so that you will know where is the problem… what is the size of your code? at89c51 has only 4kb of ram

[gana]

hi i have  a question about proteus7… we know if some pin of chip has high value it showes red color and low voltage is blue color ….But sometimes it showes yellow and gray colors and takes error what does this mean?

[romel emperado]

when it grays it means the one end has low and the other is high….

[gana]

your HEX of key password has written in keil right ? but in my chip burning mashine can not get it and burn..

but if i change it on MicroC it can but doesnt work. so in below we have a changed Code that i changed and  can you check it and make it correct into MicroC … i need your password code of Home security project in MicroC pls help and cjeck this out..

 

#define display P3
#define KEYPAD P1

sbit doorclose at P1_7_bit;
sbit correct at P3_5_bit;
sbit wrong at P3_4_bit;
sbit key at P3_7_bit;
void DelayMs(unsigned int);
void save (unsigned char);
void compare (void);
void next (void);

sbit neg at P1_4_bit;
sbit xor at P1_5_bit;
sbit gur at P1_6_bit;

unsigned char keypad[4][3]= { ‘1’, ‘2’, ‘3’,
                              ‘4’, ‘5’, ‘6’,
                              ‘7’, ‘8’, ‘9’,
                              ‘*’, ‘0’, ‘#’};

unsigned char displayb[4][3]= { 1 , 2 , 3 ,
                                4 , 5 , 6 ,
                                7 , 8 , 9 ,
                                0,  0 , 0};

unsigned char code password[6]= “12345”;
unsigned char user[30];             //user is allowed to press 30 keys without entering
unsigned char q,a=0,z=0;
char t=1;
bit tr;
char d;

void main(void)
{
unsigned char colloc,rowloc;
 doorclose=0;
 KEYPAD=1;
 

        while(1)
        {
            neg=1; xor=1; gur=1;
                do
                {
                        KEYPAD=0xF0;
                        colloc=((KEYPAD)&&( 0xF0));
                }
    while(colloc ==0xF0);        // if any key pressed
        DelayMs(1);                                         // some delay
        do
        {
        colloc=KEYPAD;
        colloc =0xF0;   //zassan
        }while(colloc==0xF0);                // to verify is really key pressed

                KEYPAD=0xFE;
                colloc=((KEYPAD)&&(0xF0));
                if(colloc !=0xF0)
                {
                        rowloc=0;
                     goto next;
                }

                KEYPAD=0xFD;
                colloc=((KEYPAD)&&(0xF0));
                if(colloc !=0xF0)
                {
                        rowloc=1;
                       goto next;
                }
                KEYPAD=0xFB;
                colloc=((KEYPAD)&&(0xF0));
                if(colloc !=0xF0)
                {
                        rowloc=2;
                     goto next;
                }

                KEYPAD=0xF7;
                colloc=((KEYPAD)&&(0xF0));
                {rowloc=3;
                goto next ; }

next:
if (colloc==0xE0)
{
 key=0;                                         // verifying that key is pressed
 DelayMs(145);
 key=1;
 display=(((display )&& (0xf0))||(displayb[rowloc][0])); // display to 7 seg
 save(keypad[rowloc][0]);
}
else if(colloc==0xD0)
{
 key=0;                                         // verifying that key is pressed
 DelayMs(145);
 key=1;
 display=(((display )&& (0xf0)) || (displayb[rowloc][1]));
 save(keypad[rowloc][1]);
}
else if(colloc==0xb0)
{
 key=0;                                         // verifying that key is pressed
 DelayMs(145);
 key=1;
 display=(((display & 0xf0)) || ((displayb[rowloc][2])));
 save(keypad[rowloc][2]);
}
DelayMs(100);           // here this delay is important if this is less than 100ms then
                                   // controller understand 1 key as press 2 or 3 times becoz that
                                   //is fast as compaer o our pressing if u want to remove delay from here
                                   // then increse the above 1ms to 100 ms
}
}

void save (unsigned char c)
{
 if(c==’*’)
 {
  if(a!=0)
  a–;
  return;
 }

 if((a==5) && (c==’#’))
 {
  a=0;
  compare();

        if(t==1)
        {
          if(tr==1) // if match ok
          {
           DelayMs(40);
       correct=0;
           t=2;
       for(d=0; d<7; d++)           // on and after 10 sec off nw keypad can’t get data
       DelayMs(50);         // max delay u can get is DelayMs(65535) otherwise need looping for big delay
       correct=1;
           z=0;
       a=0;           // start agian from 0 location of array

      }
          else if(tr==0)
           goto error;

    }
        else if(t==2)
          {
            DelayMs(40);
            doorclose=0;
                t=1;
            for(d=0; d<5; d++)
        DelayMs(50);
        doorclose=1;
          }
  }

 else if((a>5 && c==’#’) || (a<5 && c==’#’))
  {
   error:
   for(q=0; q<5; q++)
   {
    wrong=0;
    DelayMs(220);
    wrong=1;
    DelayMs(220);
    a=0;
   }
   z=z+1;

       if(z==4)
        {
                 for(q=0; q<10; q++)
                  {
               wrong=0;
                   DelayMs(2000);
           wrong=1;
                   z=0;
           DelayMs(220);
                   }
            }
        a=0;
  }
else
 {
  user[a]=c;
  a++;

  if(a==30)                // if the user press 31 keys without entering it will automatically indicate an error
   {
    display=((display & 0xf0) || (displayb[3][1])); //brings a zero display on the seven segment
    goto error;        //redirect to error code
   }
 }

}          //end of save

void compare (void)
{
 unsigned char b;
  for(b=0;b<5;b++)
   {

    if(user==password)
     tr=1;
    else
    {
     tr=0;
     break;
    }
   }
}

//

---

// Delay mS function
//

---

void DelayMs(unsigned int count)
{  // mSec Delay 11.0592 Mhz
    unsigned int i;
    while(count) {
        i = 115;
                while(i>0) i–;
        count–;
    }
}

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