12864实现圆形模拟时钟及温度显示.docx
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- 上传时间:2023-05-06
- 格式:DOCX
- 页数:35
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12864实现圆形模拟时钟及温度显示.docx
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12864实现圆形模拟时钟及温度显示
显示效果如下图
MCU:
STC89C52RC
LCD:
12864液晶
温度传感器:
DS18B20
程序如下:
#include
#include
#include
#include
#defineucharunsignedchar
#defineuintunsignedint
#definedelayNOP();{_nop_();_nop_();_nop_();_nop_();};
#definepi3.1415926
/*************12864LCD引脚定义*************/
#defineLCD_dataP0//数据口
sbitLCD_RS=P2^3;//寄存器选择输入
sbitLCD_RW=P2^2;//液晶读/写控制
sbitLCD_EN=P2^1;//液晶使能控制
sbitLCD_PSB=P2^4;//串/并方式控制
sbitLCD_RST=P2^5;//液晶复位端口
sbitk1=P3^5;//按键
sbitk2=P3^2;
sbitk3=P3^3;
sbitk4=P3^4;
sbitDQ=P2^0;//数据口defineinterface
uchara,b,c,count,num;
uinttemp;
uchartabbjsj[]="北京时间";
uchartabsswd[]="实时温度";
uchartab[]="01:
00:
00";
ucharcodetable[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00};
/*******************************************************************/
/**/
/*延时函数*/
/**/
/*******************************************************************/
voiddelay(intms)
{
while(ms--)
{
uchari;
for(i=0;i<150;i++)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
}
/*******************************************************************/
/**/
/*精确延时函数,延时1秒,软件算得*/
/**/
/*******************************************************************/
voidDelay_S(void)//延时1s误差0us
{
unsignedchara,b,c;
for(c=167;c>0;c--)
for(b=171;b>0;b--)
for(a=16;a>0;a--);
_nop_();//ifKeil,requireuseintrins.h
}
/*******************************************************************/
/**/
/*检查LCD忙状态*/
/*lcd_busy为1时,忙,等待。
lcd-busy为0时,闲,可写指令与数据。
*/
/**/
/*******************************************************************/
bitlcd_busy()
{
bitresult;
LCD_RS=0;
LCD_RW=1;
LCD_EN=1;
delayNOP();
result=(bit)(P0&0x80);
LCD_EN=0;
return(result);
}
/*******************************************************************/
/**/
/*写指令数据到LCD*/
/*RS=L,RW=L,E=高脉冲,D0-D7=指令码。
*/
/**/
/*******************************************************************/
voidlcd_wcmd(ucharcmd)
{
while(lcd_busy());
LCD_RS=0;
LCD_RW=0;
LCD_EN=0;
_nop_();
_nop_();
LCD_data=cmd;
delayNOP();
LCD_EN=1;
delayNOP();
LCD_EN=0;
}
/*******************************************************************/
/**/
/*写显示数据到LCD*/
/*RS=H,RW=L,E=高脉冲,D0-D7=数据。
*/
/**/
/*******************************************************************/
voidlcd_wdat(uchardat)
{
while(lcd_busy());
LCD_RS=1;
LCD_RW=0;
LCD_EN=0;
LCD_data=dat;
delayNOP();
LCD_EN=1;
delayNOP();
LCD_EN=0;
}
/*******************************************************************/
/**/
/*从lcd读取数据到data*/
/*RS=H,RW=L,E=高脉冲,D0-D7=数据。
*/
/**/
/*******************************************************************/
ucharlcd_rdat()
{
uchardat;
while(lcd_busy());
LCD_data=0XFF;
LCD_RS=1;
LCD_RW=1;
LCD_EN=0;
LCD_EN=1;
dat=LCD_data;
LCD_EN=0;
return(dat);
}
/*******************************************************************/
/**/
/*LCD初始化设定*/
/**/
/*******************************************************************/
voidlcd_init()
{
LCD_PSB=1;//并口方式
LCD_RST=0;//液晶复位
delay(3);
LCD_RST=1;
delay(3);
lcd_wcmd(0x34);//扩充指令操作
delay(5);
lcd_wcmd(0x30);//基本指令操作
delay(5);
lcd_wcmd(0x0C);//显示开,关光标
delay(5);
lcd_wcmd(0x01);//清除LCD的显示内容
delay(5);
}
/***********************************************************
函数名:
DrawPoint
函数说明:
画点
传入参数:
打点位置(x0,y0);color=1,点亮;color=0,擦除
传出参数:
无
返回值:
无
**********************************************************/
voidDrawPoint(unsignedcharx,unsignedchary,unsignedcharcolor)
{
unsignedcharrow,collum,cbite;
unsignedchartempH,tempL;
lcd_wcmd(0x34);//打开扩充指令集
lcd_wcmd(0x36);//打开图形显示
collum=x>>4;
cbite=x&0x0f;
if(y<32)
row=y;
else
{
row=y-32;
collum+=8;
}
lcd_wcmd(0x80+row);//先写Y坐标
lcd_wcmd(0x80+collum);//再写X坐标
lcd_rdat();
tempH=lcd_rdat();//先读出高字节
tempL=lcd_rdat();//再读出低字节
lcd_wcmd(0x80+row);//先写Y坐标
lcd_wcmd(0x80+collum);//再写X坐标
if(color)
{
if(cbite<8)
{
tempH|=(1<<(7-cbite));
}
else
{
tempL|=(1<<(15-cbite));
}
}
else
{
if(cbite<8)
{
tempH&=~(1<<(7-cbite));
}
else
{
tempL&=~(1<<(15-cbite));
}
}
lcd_wdat(tempH);
lcd_wdat(tempL);
lcd_wcmd(0x30);
}
/***********************************************************
函数名:
line
函数说明:
画直线
传入参数:
直线起始位置(x0,y0);终点(x1,y1)
传出参数:
无
返回值:
无
**********************************************************/
voidline(unsignedcharx0,unsignedchary0,unsignedcharx1,unsignedchary1,unsignedcharcolor)
{
intdx;/*直线x轴差值变量*/
intdy;/*直线y轴差值变量*/
chardx_sym;/*x轴增长方向,为-1时减值方向,为1时增值方向*/
ch
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- 12864 实现 圆形 模拟 时钟 温度 显示
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