📄 display.c
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#include "display.h"
//=============================================================
const unsigned char CGTAB[64]={ 0x00,0x40,0x37,0x10,0x81,0x61,0x22,0x0A,/*"液"= 80H*/
0x16,0x2B,0xE2,0x22,0x22,0x22,0x23,0x22,
0x80,0x44,0xFE,0x20,0x20,0x3C,0x44,0x64,
0x98,0x48,0x50,0x20,0x50,0x8E,0x04,0x00,
0x0F,0x08,0x08,0x0F,0x08,0x08,0x0F,0x08,/*"晶"= 84H*/
0x7E,0x42,0x42,0x7E,0x42,0x42,0x7E,0x42,
0xE0,0x20,0x20,0xE0,0x20,0x20,0xE0,0x24,
0xFE,0x84,0x84,0xFC,0x84,0x84,0xFC,0x84};
const prog_char CCTAB[4][32]={ 0x00,0x02,0xEC,0x08,0xC1,0x06,0xF4,0x10, // 清
0xC8,0x44,0xC7,0x44,0xC4,0x44,0x44,0x44,
0x02,0x12,0x3F,0x02,0x1F,0x02,0x7F,0x10,
0x3F,0x10,0x1F,0x10,0x1F,0x10,0x14,0x08,
0x20,0x20,0x10,0x10,0x18,0x94,0x52,0x10, // 华
0x90,0x80,0xFF,0x80,0x80,0x80,0x80,0x80,
0x02,0x12,0x1A,0x06,0x03,0x02,0x22,0x22,
0x3C,0x00,0x7F,0x00,0x00,0x00,0x00,0x00,
0x20,0xFF,0xA0,0x82,0xCC,0x28,0x80,0x6F, // 蓬
0xD8,0x08,0xC8,0x08,0xE8,0x08,0x14,0xE2,
0x22,0x7F,0x02,0x1F,0x08,0x07,0x18,0x62,
0x1F,0x02,0x1F,0x02,0x3F,0x02,0x62,0x3F,
0x90,0xBF,0x90,0x90,0x90,0x9E,0x82,0xE2, // 张
0x82,0x9E,0x90,0x90,0x90,0x90,0x8A,0x84,
0x00,0x10,0x10,0x08,0x04,0x02,0x20,0x7F,
0x02,0x02,0x04,0x04,0x08,0x72,0x21,0x00};
unsigned char DTAB[11]={ 0x37,0x45,0x4c,0x43,0x4f,0x4d,0x45,0x00,0x39,0x4f,0x55};
PGM_P XX ;
//=============================================================
#define Lcd_CD PC0
#define Lcd_REST PC1
#define Lcd_CS PC2
#define Lcd_WR PG0
#define Lcd_RD PG1
#define LCD_CS_PORT PORTC
#define LCD_W_R_PORT PORTG
//=============================================================
uchar readstate(void) //读取LCD状态字
{
uchar lcd_state;
DDRA=0x00;
LCD_CS;
sbi(LCD_CS_PORT,Lcd_CD); // C/D=1
cbi(LCD_W_R_PORT,Lcd_RD); // /RD=0
lcd_state=PINA&0xff; // 读取引脚A物理电平
asm("nop");
asm("nop");
sbi(LCD_W_R_PORT,Lcd_RD); // /RD=1
LCD_CS_OFF;
return lcd_state;
}
//判断指令（数据）读写状态
void st01(void)
{
while((readstate()&0x03)!=3)
;
}
//判断数据自动读状态
void st2(void)
{
while((readstate()&0x04)!=4)
;
}
//判断数据自动写状态
void st3(void)
{
while((readstate()&0x08)!=8)
;
}
//指令写入函数
void writecode(uchar comd0)
{
st01();
LCD_CS;
DDRA=0xff; //A口方向为输出
PORTA=comd0; //送数据到A口寄存器
sbi(LCD_W_R_PORT,Lcd_RD); // /RD=1
cbi(LCD_W_R_PORT,Lcd_WR); // /WR=0
asm("nop");
sbi(LCD_W_R_PORT,Lcd_WR); // /WR=1
LCD_CS_OFF;
}
//数据写入函数
void writedata(uchar onedata)
{
st01();
LCD_CS;
cbi(LCD_CS_PORT,Lcd_CD); // C/D=0,数据通道
DDRA=0xff; //A口方向为输出
PORTA=onedata; //送数据到A口寄存器
cbi(LCD_W_R_PORT,Lcd_WR); // /WR=0
asm("nop");
sbi(LCD_W_R_PORT,Lcd_WR); // /WR=1
LCD_CS_OFF;
}
//数据自动写入函数
void writeauto(uchar onedata)
{
st3();
LCD_CS;
cbi(LCD_CS_PORT,Lcd_CD); // C/D=0,数据通道
DDRA=0xff; //A口方向为输出
PORTA=onedata; //送数据到A口寄存器
cbi(LCD_W_R_PORT,Lcd_WR); // /WR=0
asm("nop");
sbi(LCD_W_R_PORT,Lcd_WR); // /WR=1
LCD_CS_OFF;
}
//一字节参数指令写入函数
void oneparameter(uchar onep1,uchar comd1)
{
writedata(onep1);
writecode(comd1);
}
//两字节参数指令写入函数
void twoparameter(uchar twop1,uchar twop2,uchar comd2)
{
writedata(twop1);
writedata(twop2);
writecode(comd2);
}
//内置T6963C控制器液晶初始化函数
void lcd_init(void)
{
twoparameter(0x00,0x00,0x40); //文本显示区域首地址0x0000
twoparameter(0x10,0x00,0x41); //文本显示区域宽度16字节
twoparameter(0x00,0x08,0x42); //图形显示区域首地址0x0800
twoparameter(0x10,0x00,0x43); //图形显示区域宽度16字节
writecode(0xa7); //光标形状
writecode(0x80); //显示方式设置（使用内部CGROM，逻辑或合成）
writecode(0x9c); //显示开关（开文本和图形显示方式，禁止光标显示和闪烁）
}
//清除屏幕（清所有8K存储空间）
void lcd_clear(void)
{
uint cl_count;
twoparameter(0x00,0x00,0x24); //设置显示存储器首地址
writecode(0xb0); //设置自动写状态
for(cl_count=8192;cl_count>0;cl_count--)
writeauto(0x00);
writecode(0xb2); //关闭自动写状态
}
//西文字符写入函数
//x_asc:0~29; y_asc:0~15
void writeasc(uchar x_asc,uchar y_asc,uchar code_asc)
{
uint address;
address=y_asc*16+x_asc;
twoparameter((uchar)(address),(uchar)(address>>8),0x24); //设置显示存储器地址
oneparameter(code_asc,0xc4); //装入字符代码，写入数据，地址不变
}
//汉字写入函数
//x_hz:0~29; y_hz:0~127
void writehz(uchar x_hz,uchar y_hz,uchar code_hz,PGM_P LL)
{
uchar i_hz;
uint zx;
uint address,addr_hz;
PGM_P LL1;
address=y_hz*16+x_hz+0x0800; //计算显示存储器地址
address=0x13ff-address-1; //计算显示存储器地址
addr_hz=0; //计算汉字字模地址（cctab的下标）
for(i_hz=0;i_hz<16;i_hz++) //计数值16
{
twoparameter((uchar)(address),(uchar)(address>>8),0x24); //设置显示存储器地址
// oneparameter((pgm_read_byte(LL)),0xc0);//CCTAB[code_hz][addr_hz],0xc0); //写入汉字字模左部
LL1=LL;
oneparameter((pgm_read_byte(16+LL++)),0xc0); //CCTAB[code_hz][16+addr_hz++]),0xc0); //写入汉字字模右部
oneparameter((pgm_read_byte(LL1)),0xc0);//CCTAB[code_hz][addr_hz],0xc0); //写入汉字字模左部
address=address-16;
// address+=16; //修改显示存储器地址，显示下一列（共16列）
}
}
//显示一个点函数
//x:0~239; y:0~127(消除点）128~255(显示点）
void writepoint(uchar x,uchar y)
{
uchar x_pt,y_pt;
uint address;
x_pt=x;
y_pt=y;
address=(y_pt&0x7f)*32+x_pt/8+0x0800; //计算显示存储器地址
twoparameter((uchar)(address),(uchar)(address>>8),0x24); //设置显示存储器地址
x_pt=(~(x_pt%8))&0x07;
y_pt=((y_pt&0x80)>>4)|0xf0;
writecode(x_pt|y_pt); //写入数据
}
void China(PGM_P XX,uchar gs,uchar Line)
{
uchar i;
for(i =0;i<gs;i++)
{
writehz(i*2,Line*16,i,XX+i*32);
}
}
void Xs(void)
{
uchar gs,line;
switch(Pin)
{
case 1:{
XX = CCTAB;
gs = 4;
line = 1;
goto Chia_Disp;
}
case 2:{
lcd_clear();
XX = CCTAB;
gs = 2;
line = 0;
goto Chia_Disp;
}
case 3: {
lcd_clear();
// XX = PAGE3;
goto Chia_Disp;
}
case 4: {
lcd_clear();
// XX = PAGE4;
goto Chia_Disp;
}
case 5: {
lcd_clear();
// XX = PAGE5;
goto Chia_Disp;
}
case 6: {
lcd_clear();
// XX = PAGE6;
goto Chia_Disp;
}
Chia_Disp: China(XX,gs,line);
break;
}
}
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