/******************************************************************************
* 函数原型: -LCD_PutGraphic
* 函数功能:
* 输入参数:
* 输出参数:
* 编写日期： 2014/04/13, ChenxianLong create this function
******************************************************************************/
void LCD_PutGraphic(unsigned char code *img)
{
int i,j;
//显示上半屏内容设置
for(i=0;i<32;i++)
{
Write_Cmd(0x80 + i); //SET 垂直地址 VERTICAL ADD
Write_Cmd(0x80); //SET 水平地址 HORIZONTAL ADD
for(j=0;j<16;j++)
{
Write_Data(*img);
img++;
}
}
//显示下半屏内容设置
for(i=0;i<32;i++)
{
Write_Cmd(0x80 + i); //SET 垂直地址 VERTICAL ADD
Write_Cmd(0x88); //SET 水平地址 HORIZONTAL ADD
for(j=0;j<16;j++)
{
Write_Data(*img);
img++;
}
}
}
/******************************************************************************
* CGRAM:
* 函数原型: -
* 函数功能:
* 输入参数:
* 输出参数:
* 编写日期： 2014/04/13, ChenxianLong create this function
******************************************************************************/
void CGRAM()
{
int i;
Write_Cmd(0x30);
Write_Cmd(0x40);
for(i=0;i<16;i++)
{
// Write_Data(user16x16[i*2]);
// Write_Data(user16x16[i*2+1]);
}
}
/******************************************************************************
* DisplayCGRAM:
* 函数原型: -
* 函数功能:
* 输入参数:
* 输出参数:
* 编写日期： 2014/04/13, ChenxianLong create this function
******************************************************************************/
void DisplayCGRAM(unsigned char x,unsigned char y)
{
switch(y)
{
case 1: Write_Cmd(0x80+x);break;
case 2: Write_Cmd(0x90+x);break;
case 3: Write_Cmd(0x88+x);break;
case 4: Write_Cmd(0x98+x);break;
default:break;
}
Write_Data(00);
Write_Data(00);
}
/******************************************************************************
* Init_ST7920:
* 函数原型: -
* 函数功能:
* 输入参数:
* 输出参数:
* 编写日期： 2014/04/13, ChenxianLong create this function
******************************************************************************/
void Init_ST7920()
{
DelaynMs(10);
Write_Cmd(0x30); //选择基本指令集
DelayUs2x(50); //延时大于100us
Write_Cmd(0x30); //选择8bit数据流
DelayUs2x(20); //延时大于37us
Write_Cmd(0x0c); //开显示(无游标、不反白)
DelayUs2x(50); //延时大于100us
Write_Cmd(0x01); //清除显示，并且设定地址指针为00H
DelaynMs(15); //延时大于10ms
Write_Cmd(0x06); //指定在资料的读取及写入时，设定游标的移动方向及指定显示的移位，光标从右向左加1位移动
DelayUs2x(50); //延时大于100us
}
/******************************************************************************
* LCD_PutString:
* 函数原型: -
* 函数功能:
* 输入参数:
* 输出参数:
* 编写日期： 2014/04/13, ChenxianLong create this function
******************************************************************************/
void LCD_PutString(unsigned char x,unsigned char y,unsigned char code *s)
{
switch(y)
{
case 1: Write_Cmd(0x80+x);break;
case 2: Write_Cmd(0x90+x);break;
case 3: Write_Cmd(0x88+x);break;
case 4: Write_Cmd(0x98+x);break;
default:break;
}
while(*s>0)
{
Write_Data(*s);
s++;
DelayUs2x(250);
}
}
void Write_Cmd_Data (unsigned char x,unsigned int y)
{
unsigned char m,n;
m=y>>8;
n=y;
Write_Cmd(0x00,x);
Write_Data(m,n);
}
static void clear( color c = white ){
int d = from_color( c );
LCD_SetCursor( 0x00, 0x0000 );
Write_Cmd( 0x22 ); // write RAM prepare
for( int index = 0; index < 76800; index++ ){
Write_Dat( d );
}
}
void LCD_SetPos(unsigned int x0,unsigned int x1,unsigned int y0,unsigned int y1)
{
Write_Cmd_Data(0x50,x0); // Horizontal GRAM Start Address
Write_Cmd_Data(0x51,x1); // Horizontal GRAM End Address
Write_Cmd_Data(0x52,y0); // Vertical GRAM Start Address
Write_Cmd_Data(0x53,y1); // Vertical GRAM Start Address
Write_Cmd_Data(0x20,x0); // GRAM horizontal Address
Write_Cmd_Data(0x21,y0); // GRAM Vertical Address
Write_Cmd (0x00,0x22); // 0x0022,Start to Write Data to GRAM
}
/*****************************************************************************
** �������: LCD_ReadReg
** ��������: ��ָ��
** �� ����: Dream
** �ա� ��: 2010��12��06��
*****************************************************************************/
uint16_t LCD_ReadReg(uint16_t LCD_Reg)
{
uint16_t temp;
Write_Cmd(LCD_Reg); //д��Ҫ���ļĴ�����
GPIOB->CRH = (GPIOB->CRH & 0x00000000) | 0x44444444; //���˿ڸ�8λ���ó�����
GPIOC->CRL = (GPIOC->CRL & 0x00000000) | 0x44444444; //���˿ڵ�8λ���ó�����
LCD_CS = 0;
LCD_RS = 1;
LCD_RD = 0;
temp = ((GPIOB->IDR&0xff00)|(GPIOC->IDR&0x00ff)); //��ȡ���(���Ĵ���ʱ,������Ҫ��2��)
LCD_RD = 1;
LCD_CS = 1;
GPIOB->CRH = (GPIOB->CRH & 0x00000000) | 0x33333333; //�ͷŶ˿ڸ�8λΪ���
GPIOC->CRL = (GPIOC->CRL & 0x00000000) | 0x33333333; //�ͷŶ˿ڵ�8λΪ���
return temp;
}
/*****************************************************************************
** �������: LCD_Write_Reg
** ��������: дָ����
** �� ����: Dream
** �ա� ��: 2010��12��06��
*****************************************************************************/
void LCD_WriteReg(uint16_t LCD_Reg,uint16_t LCD_Dat)
{
Write_Cmd(LCD_Reg);
Write_Dat(LCD_Dat);
}
static color pixel_read( vector p ){
LCD_SetCursor( p.x_get(), p.y_get() );
Write_Cmd( 0x22 ); // write RAM prepare
return to_color( LCD_ReadDat() );
}
static void pixel_write( vector p, color c ){
LCD_SetCursor( p.x_get(), p.y_get() );
Write_Cmd( 0x22 ); // write RAM prepare
Write_Dat( from_color( c ));
}
static int LCD_Read_Reg( int reg ){
Write_Cmd( reg );
return LCD_ReadDat();
}
static void LCD_WriteReg( int reg, int data ){
Write_Cmd( reg );
Write_Dat( data );
}
/******************************************************************************
* ClrScreen:
* 函数原型: -
* 函数功能:
* 输入参数:
* 输出参数:
* 编写日期： 2014/04/13, ChenxianLong create this function
******************************************************************************/
void ClrScreen()
{
Write_Cmd(0x01);
DelaynMs(15);
}
/*****************************************************************************
** �������: LCD_WriteRAM_Prepare
** ��������: ��
** �� ����: Dream
** �ա� ��: 2010��12��06��
*****************************************************************************/
void LCD_WriteRAM_Prepare()
{
Write_Cmd(R34);
}
/*****************************************************************************
** �������: LCD_DrawPoint
** ��������: дһ����
** �� ����: Dream
** �ա� ��: 2010��12��06��
*****************************************************************************/
void LCD_DrawPoint(uint16_t x,uint16_t y)
{
LCD_SetCursor(x,y);//���ù��λ��
Write_Cmd(R34);//��ʼд��GRAM
Write_Dat(POINT_COLOR);
}
/******************************************************************************
* 函数原型: -SetGraphicMode
* 函数功能:
* 输入参数:
* 输出参数:
* 编写日期： 2014/04/13, ChenxianLong create this function
******************************************************************************/
void SetGraphicMode()
{
Write_Cmd(0x36); //选择8bit数据流 图形模式
DelayUs2x(20);
}
