void lcd_clear_screen(unsigned int color_background)
{
unsigned int i,j;
LCD_WRITE_COMMAND(0x210,0x00);
LCD_WRITE_COMMAND(0x212,0x0000);
LCD_WRITE_COMMAND(0x211,0xEF);
LCD_WRITE_COMMAND(0x213,0x013F);
LCD_WRITE_COMMAND(0x200,0x0000);
LCD_WRITE_COMMAND(0x201,0x0000);
LCD_RS_L();
LCD_WRITE_REG(0x202); //RAM Write index
LCD_CS_L();
for(i=0;i<320;i++)
{
for(j=0;j<240;j++)
{
LCD_WRITE_DATA( color_background );
}
}
LCD_RS_L();
LCD_CS_H();
}
void LCD_WRITE_REG(unsigned int index)
{
int value_index; // uint -> int
LCD_RS_L();
LCD_CS_L();
value_index=index;
value_index =value_index>>8;
SPI0_communication((unsigned char)(value_index)); //00000000 000000000
value_index=index;
value_index &=0x00ff;
SPI0_communication((unsigned char)(index));
LCD_CS_H();
LCD_RS_H();
}
/******************************************************************************
* Function Name : LCD_WRITE_COMMAND
* Description : send command to LCD
* Input : index, data
* Output : None
* Return : None
******************************************************************************/
void LCD_WRITE_COMMAND(unsigned int index,unsigned int data)
{
//select command register
LCD_RS_L();
LCD_CS_L();
SPI0_communication((unsigned char)(index>>8)); //00000000 000000000
SPI0_communication((unsigned char)(index));
LCD_CS_H();
//send data
LCD_RS_H();
LCD_CS_L();
SPI0_communication((unsigned char)(data>>8)); //00000000 000000000
SPI0_communication((unsigned char)(data));
LCD_CS_H();
}
void LCD_WR_REG16(unsigned int index)//写积存器命令
{
LCD_RD_H();
LCD_RS_L();
LCD_CS_L();
LCD_WR_L();
delay_us(1);
DATA_LCD_PORT=index>>8;
delay_us(1);
LCD_WR_H();
LCD_WR_L();
delay_us(1);
DATA_LCD_PORT=index&0XFF;
delay_us(1);
LCD_WR_H();
LCD_CS_H();
}
