[SOLVED] Progress Bar Display Problem on LCD , please help ??

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I have to make a progress bar on my lcd (16x2), but having some problem

Previously i had made a progress bar based on 16 Values as on lcd we can display 16 characters easily, I had done this successfully
Have a look at this video
https://www.youtube.com/watch?v=5XYMfwnPXtQ

But now i have to create 32 steps on lcd, that's why i use one shaded box to display one value and other to display full.
By this i had created 32 steps on lcd.
But i am not able to display progress bar in negative direction pls help

here is my code

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Code C - [expand]
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// LCD module connections
sbit LCD_RS at RC0_bit;
sbit LCD_EN at RC1_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 TRISC0_bit;
sbit LCD_EN_Direction at TRISC1_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
 
unsigned char key;
unsigned char flag;
int counter = 0;
const char Less_Than[] = {1,3,7,15,15,7,3,1};
const char Greater_Than[] = {16,24,28,30,30,28,24,16};
const char Shaded_Block[] = {21,10,21,10,21,10,21,10};
 
void interrupt(void)
{
 if(INTCON.RBIE & INTCON.RBIF)
 {
  key = PORTB;
  key = key & 0xC0;
  if(key == 0x40)             //Down key is Pressed
  {
   if(counter > -16)
   {
    counter--;
   }
  }
  else if(key == 0x80)        //Up Key Pressed
  {
   if(counter < 16)
   {
    counter++;
   }
  }
  key = PORTB;
  key = key & 0xC0;
  while(key != 0xC0)
  {
   PORTB = 0xC0;
   key = PORTB;
   key = key & 0xC0;
  }
  flag = 1;
  INTCON.RBIF = 0;
 }
}
 
void Display_Value(int value)
{
 unsigned char ones,tens;
 if(value >= 0)
 {
  Lcd_Chr(1,14,'+');
 }
 else
 {
  value = value * (-1);
  Lcd_Chr(1,14,'-');
 }
 ones = value % 10;
 value = value / 10;
 tens = value % 10;
 ones = ones | 0x30;
 tens = tens | 0x30;
 Lcd_Chr(1,15,tens);
 Lcd_Chr(1,16,ones);
}
 
void Progress_Bar(int value)
{
 unsigned char j;
 if(value == 0)
 {
  Lcd_Chr(2,8,0);
  Lcd_Chr(2,9,1);
 }
 else if(value > 0)
 {
  value = value+16;
  Lcd_Chr(2,8,' ');
  for(j=16;j<value;j++)
  {
   if(j%2 == 0)
   {
    Lcd_Chr(2,j/2+1,2);
   }
   else
   {
    Lcd_Chr(2,j/2+1,0xFF);
   }
  }
  j=j+1;
  for(;j<32;j++)
  {
   if(j%2 == 0)
   {
    Lcd_Chr(2,j/2+1,' ');
   }
   else
   {
    Lcd_Chr(2,j/2+1,' ');
   }
  }
 }
 else if(value < 0)
 {
  value = value + 16;
  Lcd_Chr(2,9,' ');
 }
}
 
void main()
{
 unsigned char i;
 
 counter = 0;
 TRISB |= 0b11110000;
 Lcd_Init();
 Lcd_Cmd(_LCD_CLEAR);
 Lcd_Cmd(_LCD_CURSOR_OFF);
 Delay_ms(10);
 Lcd_Out(1,5,"EDA BOARD");
 Lcd_Out(2,1,"<-PROGRESS-BAR->");
 Delay_ms(1000);
 
 INTCON.RBIE = 1;
 INTCON.GIE = 1;
 INTCON.PEIE = 1;
 
 Lcd_Cmd(_LCD_CLEAR);
 Lcd_Out(1,1,"Progress Bar:");
 Display_Value(counter);
 Progress_Bar(counter);
 /********************************************/
 Lcd_Cmd(64);          //CGRAM Address
 for(i=0;i<8;i++)
 {
  Lcd_Chr_Cp(Less_Than[i]);
 }
 Lcd_Cmd(_LCD_RETURN_HOME);
 
 Lcd_Cmd(72);
 for(i=0;i<8;i++)
 {
  Lcd_Chr_Cp(Greater_Than[i]);
 }
 Lcd_Cmd(_LCD_RETURN_HOME);
 
 Lcd_Cmd(80);
 for(i=0;i<8;i++)
 {
  Lcd_Chr_Cp(Shaded_Block[i]);
 }
 Lcd_Cmd(_LCD_RETURN_HOME);
 /********************************************/
 while(1)
 {
  if(flag != 0)
  {
   Lcd_Out(1,1,"Progress Bar:");
   Display_Value(counter);
   Progress_Bar(counter);
   flag = 0;
  }
 }
}

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Please help me, i am not able to write code for negative values pls help.
and also is there any method to reduce the flicker on lcd.
to see flicker have a look at this video also.
View attachment Progress Bar Problem.zip


Project Files
View attachment Progress_Bar.zip

Please some one help me

 

[jayanth.devarayanadurga]

You have to create two custom characters for LCD. One is for one complete LCD character and another for half the character of LCD. First you display the half character on LCD then you display the full charcater. So it will get you 32 steps of Progress bar. each character of LCD takes two values (half and full).

 

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Thanks for your kind reply.
I had solved this problem