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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;
}
}
} |