/*******************************************************************************
* Function Name : Chk_DMA_Busy
* Description : Check whether the DMA is busy
* Input : None
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
void Chk_DMA_Busy(void)
{
uint8_t temp;
do
{
LCD_WriteCmd(0xbf);
temp = LCD_ReadData();
}while((temp&0x01)==0x01);
}
//******************************************************************************
//*函数名称:void LCD_Point(unsigned char x,unsigned char y,unsigned char color)*
//*函数功能:使用绘图的方法,在(x,y)处画一个16*16点阵的图案,也可以是字符 *
//*形式参数:unsigned char x,unsigned char y,unsigned char color *
//* x取值范围:0~127 *
//* y取值范围:0~63 (针对CM12864-12型液晶) *
//*形参说明:坐标水平位置,坐标垂直位置 *
//*液晶屏坐标说明: *
//* ________________128个像素______________________ *
//* |(0,0) (7,0)| *
//* | | *
//* 64 | | *
//* 个 |(0,31) (7,31)| *
//* 像 |(8,0) (15,0)| *
//* 素 | | *
//* | | *
//* |(8,31) (15,31)| *
//* |______________________________________________| *
//* *
//*返回参数:无 *
//*使用说明:此函数适用于CM12864-12型液晶 *
//******************************************************************************
void LCD_Point(unsigned char x,unsigned char y,unsigned char color)
{
unsigned char i,AddrX,AddrY; //寄存器地址
unsigned char BitTemp; //该点在16bit的位置
unsigned char DataH,DataL;
AddrX = x>>4; // x/16
AddrY = y&0x3F; // y%64
if(y > 31)
{
AddrX += 8;
AddrY -= 32;
}
BitTemp = x&0x0F; // x%16
LCD_GraphModeSet(0x00); //先关闭图形显示功能
//LCD_Write(LCD_COMMAND,LCD_EXTEND_FUNCTION);
for(i=0;i<4;i++)
{
LCD_GDRAM_AddressSet(0x80+AddrY);
LCD_GDRAM_AddressSet(0x80+AddrX);
//LCD_Write(LCD_COMMAND,LCD_BASIC_FUNCTION); //基本指令集
DataH = LCD_ReadData();
DataH = LCD_ReadData();
DataL = LCD_ReadData();
//DataH = LCD_ReadData();
//DataL = LCD_ReadData();
}
if(color == LCD_COLOR_BLACK)
{
if(BitTemp > 7)
{
DataL |= (0x80>>(BitTemp-8));
}
else
{
//*********************************************************************************
//*函数名称:void LCD_DisplayStrings(unsigned char x,unsigned char y,unsigned char code *p) *
//*函数功能:在(文本区)ucAdd指定的位置显示一串ASCII *
//*形式参数:unsigned char x,unsigned char y,const char *p *
//*形参说明:指定的位置,要显示的字符串 *
//*地址必须是: x<16, y<4 *
//*返回参数:无 *
//*使用说明:使用之前要初始化液晶 *
//*********************************************************************************
void LCD_DisplayStrings(unsigned char x,unsigned char y,const char *p)
{
unsigned char length,addr;
unsigned char AddrEO; //x地址是奇偶
unsigned char Data1;
y &= 0x03; //y < 4
x &= 0x0F; //x < 16
switch( y )
{
case 0:
addr = 0x80;
break;
case 1:
addr = 0x90;
break;
case 2:
addr = 0x88;
break;
case 3:
addr = 0x98;
break;
}
addr += x/2;
AddrEO = x&0x01;
length = strlen(p);
LCD_Write(LCD_COMMAND,LCD_BASIC_FUNCTION); //基本指令动作
LCD_DDRAM_AddressSet(addr);
if(AddrEO == 0x01)
{
Data1 = LCD_ReadData();
LCD_DDRAM_AddressSet(addr);
LCD_Write(LCD_DATA, Data1);
}
for( ; length ; length -- )
LCD_Write(LCD_DATA, *(p++));
}
uint16_t LCD_ReadReg(uint16_t _reg) {
LCD_WriteIndex(_reg);
uint16_t LCD_RAM = LCD_ReadData();
return LCD_RAM;
}
