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[AVR] lcd animation at 4 different location

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Aayush Awasthi

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how to use 4 lcd animation character at a time in a program at different location
 

it is LCD 16*2 in which 8 character are created as by there own wish so i want to create 4 special character at different location in LCD at position 0x80,0xc0,0x81,0xc1. but they are not creating in screen some how the code is below...


Code: 
#include<avr/io.h>
#include<util/delay.h>



#define LCD_RS 0
#define LCD_RW 1
#define LCD_EN 2
#define LCD PORTD


void lcd_string(char*);
void lcd_config();
void lcd_cmd(unsigned char );
void lcd_data(unsigned char);
void animation1();
void animation2();
void animation3();
void animation4();
int main()
{

	DDRD=0xFF;
	lcd_config();
	lcd_cmd(0x01);
	_delay_ms(1000);
	while(1)
	{
	
	
	lcd_cmd(0x85);
	lcd_string("HAPPY");

	lcd_data(0);
	animation1();
	_delay_ms(1);
	
	animation2();
	_delay_ms(1);
	animation3();
	_delay_ms(1);
	lcd_data(3);
	lcd_cmd(0xc1);
	animation4();
	lcd_cmd(0xc2);
	lcd_string("ANNIVERSARY");
	lcd_data(0);
	animation4();
	_delay_ms(100);
	
	
		


	}
return 0;
}


void animation1()
{
	lcd_cmd(0x40);
	lcd_data(0b00000001);
	lcd_data(0b00000001);	
	lcd_data(0b00000001);
	lcd_data(0b00000111);
	lcd_data(0b00001111);
	lcd_data(0b00011111);
	lcd_data(0b00001111);
	lcd_data(0b00000011);
}

void animation2()
{
	lcd_cmd(0x48);
	lcd_data(0b00010000);
	lcd_data(0b00010000);	
	lcd_data(0b00010000);
	lcd_data(0b00011100);
	lcd_data(0b00011110);
	lcd_data(0b00011111);
	lcd_data(0b00011110);
	lcd_data(0b00011000);
	
}


void animation3()
{
	lcd_cmd(0x50);
	lcd_data(0b00000011);
	lcd_data(0b00000011);	
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);

}



void animation4()
{
	lcd_cmd(0x60);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);

}





void lcd_string(char *str)
{
	unsigned int i=0;

		while(str[i]!='\0')
		{
			lcd_data(str[i]);
			i++;
		}
	/*		for(i=0;i<=50;i++)
	{
	lcd_cmd(0x1E);
	_delay_ms(100);
	}*/
}





void lcd_config()
{
	int i=0;
	lcd_cmd(0x02);
	lcd_cmd(0x06);
	lcd_cmd(0x28);
	lcd_cmd(0x0C);
	for(i=0;i<=50;i++)
	{
	lcd_cmd(0x1E);
	_delay_ms(10);
	}
}
void lcd_cmd(unsigned char x)
{
	LCD=x&0xF0;
	LCD&=~(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN); 
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);



	LCD=(x<<4)&0xF0;
	LCD&=~(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN);
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);
}
void lcd_data(unsigned char y)
{
	LCD=y&0xF0;
	LCD|=(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN);
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);



	LCD=(y<<4)&0xF0;
	LCD|=(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN);
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);
}
 
Last edited:

Each pattern has to be stored at different CGRAM location. I don't know what characters you are trying to display. It will be helpful if you post the images of characters needed.
 

i am using different CGRAM at location 0x40,0x48,0x50,0x60 but during running time only 1st animation is create at loaction 0x80 in LCD
 

ok sir when i use them i reply are they working or not
 

i use them but not correctly come and also patterns are just 4 different not imp. as pattern but i want to show on lcd 4 patterns at a time but not happen .i use ur loction for definining them .i attach the code pls see and tell me what changes i has to be done
Code: 
#include<avr/io.h>
#include<util/delay.h>



#define LCD_RS 0
#define LCD_RW 1
#define LCD_EN 2
#define LCD PORTD


void lcd_string(char*);
void lcd_config();
void lcd_cmd(unsigned char );
void lcd_data(unsigned char);
void animation1();
void animation2();
void animation3();
void animation4();
int main()
{

	DDRD=0xFF;
	lcd_config();
	lcd_cmd(0x01);
	_delay_ms(10);
	while(1)
	{
	lcd_cmd(0x85);
	lcd_string("HAPPY");
	lcd_cmd(0xc2);
	lcd_string("ANNIVERSARY");

	animation1();
	_delay_ms(1);
	animation2();
	_delay_ms(1);
	animation3();
	_delay_ms(1);
	animation4();	
	//lcd_data(0);
	animation4();
	_delay_ms(100);
	
	
		


	}
return 0;
}


void animation1()
{
	lcd_data(0);
	lcd_cmd(0x64);
	lcd_data(0b00000001);
	lcd_data(0b00000001);	
	lcd_data(0b00000001);
	lcd_data(0b00000111);
	lcd_data(0b00001111);
	lcd_data(0b00011111);
	lcd_data(0b00001111);
	lcd_data(0b00000011);
}

void animation2()
{
	lcd_data(0);
	lcd_cmd(0x72);
	lcd_data(0b00010000);
	lcd_data(0b00010000);	
	lcd_data(0b00010000);
	lcd_data(0b00011100);
	lcd_data(0b00011110);
	lcd_data(0b00011111);
	lcd_data(0b00011110);
	lcd_data(0b00011000);
	
}


void animation3()
{
	lcd_data(0);
	lcd_cmd(0x80);
	lcd_data(0b00000011);
	lcd_data(0b00000011);	
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);
	lcd_data(0b00000011);

}



void animation4()
{
	lcd_data(0);
	lcd_cmd(0x88);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);
	lcd_data(0b00011000);

}





void lcd_string(char *str)
{
	unsigned int i=0;

		while(str[i]!='\0')
		{
			lcd_data(str[i]);
			i++;
		}
	/*		for(i=0;i<=50;i++)
	{
	lcd_cmd(0x1E);
	_delay_ms(100);
	}*/
}





void lcd_config()
{
	int i=0;
	lcd_cmd(0x02);
	lcd_cmd(0x06);
	lcd_cmd(0x28);
	lcd_cmd(0x0C);
	for(i=0;i<=50;i++)
	{
	lcd_cmd(0x1E);
	_delay_ms(10);
	}
}
void lcd_cmd(unsigned char x)
{
	LCD=x&0xF0;
	LCD&=~(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN); 
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);



	LCD=(x<<4)&0xF0;
	LCD&=~(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN);
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);
}
void lcd_data(unsigned char y)
{
	LCD=y&0xF0;
	LCD|=(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN);
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);



	LCD=(y<<4)&0xF0;
	LCD|=(1<<LCD_RS);
	LCD&=~(1<<LCD_RW);
	LCD|=(1<<LCD_EN);
	_delay_ms(1);
	LCD&=~(1<<LCD_EN);
}
 

Test this in Proteus and also hardware. If you tell exactly what animated character should result then I will try to write a code.

Simulation video attached.

Try this code. I have modified your code. I Haven't checked your LCD code. Does your LCD code display "Happy Anniversary"?

Code C - [expand]
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#include <avr/io.h>
 
#define F_OSC 4000000
 
#include <util/delay.h>
 
#define _LCD_RETURN_HOME 0x02
 
#define LCD_RS 0
#define LCD_RW 1
#define LCD_EN 2
#define LCD PORTD
 
void LCD_Out(char*);
void LCD_Init();
void LCD_Cmd(unsigned char);
void LCD_Chr(unsigned char);
void CustomChar(char pos_row, char pos_char);
 
const char characterAnim[4][8] = {
      {1,1,1,7,15,31,15,3},
      {16,16,16,28,30,31,30,24},
      {3,3,3,3,3,3,3,3},
      {24,24,24,24,24,24,24,24}
};
      
void CustomChar(char pos_row, char pos_char){
    unsigned char i, j = 0, value;
  
    for(j = 0; j < 4; j++){
        LCD_Cmd(64 + (j * 8));
        for (i = 0; i <= 7; i++) Lcd_Chr(characterAnim[j][i]);
        LCD_Cmd(_LCD_RETURN_HOME);
 
    switch(pos_row){
        case 1:
            value = 0x80 + pos_char;
            break;
        case 2:
            value = 0xC0 + pos_char;
            break;
        case 3:
            value = 0x94 + pos_char;
            break;
        case 4:
            value = 0xD4 + pos_char;
            break;
 
    };
 
        Lcd_Cmd(value); 
        _delay_ms(250);
    }
}
 
void LCD_Init(){
 
    int i = 0;
 
    LCD_Cmd(0x02);
    LCD_Cmd(0x06);
    LCD_Cmd(0x28);
    LCD_Cmd(0x0C);
 
    for(i=0; i <= 50; i++){
        LCD_Cmd(0x1E);
        _delay_ms(10);
    }
}
 
void LCD_Cmd(unsigned char x){
 
    LCD = x & 0xF0;
    LCD &= ~(1 << LCD_RS);
    LCD &= ~(1 << LCD_RW);
    LCD |= (1 << LCD_EN); 
    _delay_ms(1);
    LCD &= ~(1 << LCD_EN);
 
 
 
    LCD = (x << 4) & 0xF0;
    LCD &= ~(1 << LCD_RS);
    LCD &= ~(1 << LCD_RW);
    LCD |= (1 << LCD_EN);
    _delay_ms(1);
    LCD &= ~(1 << LCD_EN);
}
 
void LCD_Chr(unsigned char y){
 
    LCD = y & 0xF0;
    LCD |= (1 << LCD_RS);
    LCD &= ~(1 << LCD_RW);
    LCD |= (1 << LCD_EN);
    _delay_ms(1);
    LCD& = ~(1 << LCD_EN);
 
    LCD = (y << 4) & 0xF0;
    LCD |= (1 << LCD_RS);
    LCD &= ~(1 << LCD_RW);
    LCD |= (1 << LCD_EN);
    _delay_ms(1);
    LCD &= ~(1 << LCD_EN);
}
 
void LCD_Out(char *str){
 
    unsigned int i = 0;
 
        while(*str)
        {
            LCD_Chr(*str++);            
        }   
}
 
 
 
int main()
{
 
    DDRD = 0xFF;
    PORTD = 0x00;
 
    LCD_Init();
    LCD_Cmd(0x80);
    LCD_Out("Happy");
    LCD_Cmd(0xC0);
    LCD_Out("Anniversary");
    
    while(1){
    
        CustomChar(2, 14);
 
    }
 
    return 0;
}
 

Attachments

  • LCD ANIM.rar
    15.9 KB · Views: 105
  • anim.rar
    10.1 KB · Views: 94
Last edited:
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