void LCD_init() // fuction for intialize
{
set_port_direction(outport,0xFF); // intialize output port
LCD_SendCmd(0x02); // to initialize LCD in 4-bit mode.
LCD_SendCmd(0x28); // to initialize LCD in 2 lines, 5X7 dots and 4bit mode.
LCD_SendCmd(0x0C); // make lcd ready for write
LCD_SendCmd(0x06); // increment cursor to right
LCD_SendCmd(0x80); // start form address 80 @ x in row 0
}
void LCD_Gotoxy(int x,int y) // LCD write data in specific position
{
if(y>0) // it mean that i will write in second row
{
LCD_SendCmd(0xC0+x); // second row start @ address = 0xC0
}
else // i will write in first row
{
LCD_SendCmd(0x80+x); // first row start @ address = 0x80
}
_delay_ms(200);
}
//==========================================================================================
// Set cursor position on LCD display.
//==========================================================================================
void LCD_GoTo (unsigned char line, unsigned char column)
{
uint8_t position = 0;
position = (line * 0x40) + column;
position = 0x80 + (position & 0x7F);
LCD_SendCmd(position);
}
//==========================================================================================
// Initialize the LCD.
//==========================================================================================
void LCD_Initialization(void)
{
uint8_t i;
char const *p;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitStructure.GPIO_Pin = (LCD_D7 | LCD_D6 | LCD_D5 | LCD_D4 | LCD_EN | LCD_RS);
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(LCD_PORT, &GPIO_InitStructure);
delay_ms(15);
GPIO_ResetBits(LCD_PORT, LCD_RS);
GPIO_ResetBits(LCD_PORT, LCD_EN);
for(i = 0; i<3; i++)
{
GPIO_SetBits(LCD_PORT, LCD_D4 | LCD_D5);
GPIO_ResetBits(LCD_PORT, LCD_D6 | LCD_D7);
GPIO_SetBits(LCD_PORT, LCD_EN);
delay_us(50);
GPIO_ResetBits(LCD_PORT, LCD_EN);
delay_ms(10);
}
delay_ms(50);
GPIO_SetBits(LCD_PORT, LCD_D5);
GPIO_ResetBits(LCD_PORT,LCD_D4 | LCD_D6 | LCD_D7);
GPIO_SetBits(LCD_PORT, LCD_EN);
delay_ms(50);
GPIO_ResetBits(LCD_PORT, LCD_EN);
LCD_SendCmd(0x28);
LCD_SendCmd(0x08);
LCD_SendCmd(0x01);
LCD_SendCmd(0x06);
LCD_SendCmd(0x0C);
delay_ms(5);
/* Load user-specific characters into CGRAM */
LCD_SendCmd(0x40); /* Set CGRAM address counter to 0 */
p = &UserFont[0][0];
for (i = 0; i < sizeof(UserFont); i++, p++)
LCD_SendData (*p);
LCD_SendCmd(0x80); /* Set DDRAM address counter to 0 */
}
void LCD_Clear()
{
LCD_SendCmd(0x01);
_delay_ms(200);
}
//==========================================================================================
// Clear the LCD display.
//==========================================================================================
void LCD_Clear(void)
{
LCD_SendCmd(0x01);
}
