LCD Code explanation needed~

// LCD module connections
sbit LCD_RS at RA0_bit; // sbit declares LCD_RS at RA_0 address
sbit LCD_EN at RA1_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 TRISA0_bit;
sbit LCD_EN_Direction at TRISA1_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
#pragma config CP = ON

// End LCD module connections
void CustomChar1(char pos_row, char pos_char);
char message1[] = "I";
char message2[] = "Everyone";
void main() {
CMCON = 0x07;
while (1){
Lcd_Init(); // Initialize LCD
Lcd_Cmd(_LCD_CURSOR_OFF); // OFF cursor
Lcd_Cmd(0x01); // Clear display
Lcd_Cmd(0x03);
Lcd_out(1,1,message1);
Lcd_out(1,5,message2);
CustomChar1(1,3);

delay_ms (3000);
}
}

const char character[] = {0,27,31,31,14,4,0,0};
void CustomChar1(char pos_row, char pos_char) {
char i;
Lcd_Cmd(64);
for (i = 0; i<=7; i++) Lcd_Chr_CP(character);
Lcd_Cmd(_LCD_RETURN_HOME);
Lcd_Chr(pos_row, pos_char, 0);
}

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andre_teprom said:

Considering that you did not mention exactly which alphanumeric display controller were used, by some guesing:

Code:

Lcd_Cmd(64); // [B]Base address where customized character is going to be stored[/B]
for (i = 0; i<=7; i++) Lcd_Chr_CP(character[i]); // [B]Sequentially stores each of the 8 subsequent rows [/B]

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Lcd_Chr(pos_row, pos_char, 0);

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KlausST said:

Hi,

The bold code generates a custom character. Here it is an icon, a little heart.

Klaus

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alpha91 said:

Code:

const char character[] = {0,27,31,31,14,4,0,0}; [B]Graphic data[/B]
void CustomChar1(char pos_row, char pos_char) {
 char i;
 Lcd_Cmd(64);           [B]Set CGRAM address to '00'[/B]
 for (i = 0; i<=7; i++) Lcd_Chr_CP(character[i]);   [B]Write custom character graphic data to character pos '00'[/B]
 Lcd_Cmd(_LCD_RETURN_HOME);  [B]Set LCD command[/B]
 Lcd_Chr(pos_row, pos_char, 0);   [B]Write chr code '00' to the correct LCD position[/B]

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