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/*STC89C52 3.3v小屏12864 串口測試STC12C5A60S2能用,延時(shí)時(shí)間有差別
字符0-9=203-212,A-Z=220-245,a-z=252-277
GB漢字編碼和字符地址公式:芯片地址*32=GB高8位*256+GB低8位-43807-((GB高8位-0xb0)*162)
全格數(shù)字字母地址公式:芯片地址*32=GB高8位*256+GB低8位-41701
半格數(shù)字字母地址公式:芯片地址*32=ISCII碼+155
注:字符芯片參考的是W25X16中文手冊(cè),芯片用的是3.3v電壓,與5v電壓的C52連接的I/O口都串接了1.3K的電阻*/
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit Z_DO=P3^1; //字符芯片串行數(shù)據(jù)輸出端 (MOSI)
sbit Z_CS=P3^2; //字符芯片串行片選端
sbit L_CS=P3^3; //LCD片選端
sbit L_RST=P3^4; //LCD復(fù)位端
sbit L_A0=P3^5; //LCD數(shù)據(jù)/命令(H/L)選擇端
sbit CLK=P3^6; //LCD和字符芯片串行時(shí)鐘端 (共用)
sbit SI=P3^7; //LCD和字符芯片共用串行數(shù)據(jù)端 (MISO) (共用)
code uchar t123[]="0123456789ABCDEF";
void delay(uint XMS) //延時(shí)
{
uint i;
for(;XMS>0;XMS--)
for(i=123;i>0;i--);
}
void write_byte(uchar dat) //LCD和字符芯片串口寫入1個(gè)字節(jié)(8位)
{
uchar i;
for(i=0;i<8;i++)
{
if(dat&0x80) SI=1;
else SI=0;
dat<<=1;
CLK=0;
CLK=1;
}
}
void lcd_write_cmd(uchar cmd) //LCD寫入命令
{
L_A0=0; //命令
L_CS=0; //片選
write_byte(cmd);
L_CS=1;
}
void lcd_write_dat(uchar dat) //LCD寫入數(shù)據(jù)
{
L_A0=1; //數(shù)據(jù)
L_CS=0; //片選
write_byte(dat);
L_CS=1;
}
void clr_lcd() //LCD清屏
{
uchar i,j;
for(i=0;i<8;i++)
{
lcd_write_cmd(0xb0+i);
lcd_write_cmd(0x10+0);
lcd_write_cmd(0x00+0);
for(j=132;j>0;j--)
lcd_write_dat(0x00);
}
}
void lcd_init() //LCD初始化
{
L_RST=0;
L_RST=1;
lcd_write_cmd(0xaf); //0xaf開顯示;0xae關(guān)顯示
lcd_write_cmd(0x40); //起始行顯示地址（0-63）(設(shè)置哪一行顯示為首行)
lcd_write_cmd(0xa1); //開ADC=0xa1,顯示從下往上0-127;關(guān)ADC=0xa0,顯示由上往下3-131
lcd_write_cmd(0xa6); //0xa6關(guān)反白,0xa7開反白
lcd_write_cmd(0xa4); //0xa4正常顯示,0xa5顯示所有點(diǎn)
lcd_write_cmd(0xa2); //LCD的偏壓比 1/9BIAS
lcd_write_cmd(0xc8); //0xc8正常輸出方向(上為首行);0x80反向輸出(下為首行)
lcd_write_cmd(0x2f); //內(nèi)部電源選擇(0x28-0x2f,應(yīng)設(shè)0x2f)
lcd_write_cmd(0x24); //LCD驅(qū)動(dòng)電壓的電阻比(0x20-0x27,5v可設(shè)0x24)
lcd_write_cmd(0x81); //進(jìn)入設(shè)置對(duì)比度輸出電壓V0
lcd_write_cmd(0x24); //為對(duì)比度的第二條指令,對(duì)比度電壓的等級(jí)(0x00-0x3f)
clr_lcd();
}
/*void z_write_byte(uchar dat) //字符芯片寫入1個(gè)字節(jié)
{
Z_CS=0; //片選
write_byte(dat);
Z_CS=1;
}*/
uchar z_read_byte() //字符芯片讀出1個(gè)字節(jié)
{
uchar val=0,i;
Z_DO=1;
for(i=8;i>0;i--)
{
val<<=1;
CLK=0;
CLK=1;
if(Z_DO) val++;
}
return val;
}
/*uchar z_read_add(uchar h,uchar z,uchar l) //讀字符芯片相應(yīng)地址的單個(gè)數(shù)據(jù)
{
uchar val;
Z_CS=0; //片選
write_byte(0x03);
write_byte(h);
write_byte(z);
write_byte(l);
val=z_read_byte();
Z_CS=1;
return val;
}*/
void z_init() //字符芯片初始化
{
Z_CS=1;
}
void init() //程序初始化
{
delay(100);
lcd_init();
z_init();
delay(100);
}
void lcd_out_spot(uchar y,uchar x,uchar dat) //X軸(左0-127右),Y軸(上0-7下),8位數(shù)(8個(gè)點(diǎn),左低-右高)
{
y&=0x07; x&=127; //數(shù)值限制
lcd_write_cmd(0xb0+y); //頁地址（0-7）
lcd_write_cmd(0x10|(x>>4)); //列地址高4位（0-131）
lcd_write_cmd(0x00+(x&0x0f)); //列地址低4位（0-131）
lcd_write_dat(dat);
}
void lcd_typeface(uchar y,uchar x,uint zt) //在xy坐標(biāo)地址顯示字符
{
uchar temp[32];
uchar i;
Z_CS=0; //片選
write_byte(0x03);
write_byte((zt>>11)&0xff);
write_byte((zt>>3)&0xff);
write_byte((zt<<5)&0xff);
for(i=0;i<32;i++)
temp[i]=z_read_byte();
Z_CS=1;
y%=7; //因一個(gè)字占兩個(gè)頁(行,16點(diǎn)),所以限制只能到6
x%=113; //因一個(gè)字占16(列點(diǎn)),所以限制只能到112
lcd_write_cmd(0xb0+y); //頁地址（0-7）
lcd_write_cmd(0x10|(x>>4)); //列地址高4位（0-131）
lcd_write_cmd(0x00+(x&0x0f)); //列地址低4位（0-131）
for(i=0;i<16;i++)
lcd_write_dat(temp[i]);
lcd_write_cmd(0xb0+y+1); //頁地址（0-7）
lcd_write_cmd(0x10|(x>>4)); //列地址高4位（0-131）
lcd_write_cmd(0x00+(x&0x0f)); //列地址低4位（0-131）
for(i=0;i<16;i++)
lcd_write_dat(temp[i+16]);
}
uint GB_ZT(uchar *p) //漢字GB碼轉(zhuǎn)換成字體芯片對(duì)應(yīng)漢字地址(只適用中文)
{
uchar m,n;
uint val=0;
m=*p;
p++;
n=*p;
val=m<<8|n;
val=val-43807-((m-0xb0)*162);
return val;
}
uint GB_ZF_WORD(uchar *p) //GB碼表轉(zhuǎn)換成字體芯片地址(只適用全格數(shù)字和字母)
{
uchar m,n;
uint val=0;
m=*p;
p++;
n=*p;
val=m<<8|n;
val=val-41701;
return val;
}
uint GB_ZF_BYTE(uchar *p) //GB碼表轉(zhuǎn)換成字體芯片地址(只適用半格數(shù)字和字母)(適用于ASCII數(shù)字查表)
{
uint val;
val=*p+155;
return val;
}
void out_lcd() //輸出到LCD
{
uint i;
lcd_out_spot(0,0,0x00); //畫點(diǎn)
lcd_typeface(0,0,78); //星符號(hào)
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