单片机动态波形显示.doc
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/*******************************************************************************
*描述:
*
*12864标准字库液晶演示数据p0,控制p2*
********************************************************************************/
#include
#include
#include
#defineucharunsignedchar
#defineuintunsignedint
/*************12864LCD引脚定义*************/
#defineLCD_dataP0//数据口
sbitLCD_RS=P2^6;//寄存器选择输入
sbitLCD_RW=P2^5;//液晶读/写控制
sbitLCD_EN=P2^7;//液晶使能控制
sbitLCD_PSB=P3^2;//串/并方式控制
sbitLCD_RST=P3^7;//液晶复位端口
#definedelayNOP();{_nop_();_nop_();_nop_();_nop_();};
/*********************************************************/
ucharcodeDIS1[]={"Vpp:
"};
ucharcodeDIS2[]={"F:
"};
ucharDIS3[]={"5V"};
ucharDIS4[]={"12Hz"};
ucharD1[]={"0123456789"};
/*********************************************************/
//正弦波代码
ucharcodetab[]={
126,100,80,70,65,62,65,70,80,100,126,152,172,182,187,190,187,182,172,152
};
//背景图片
ucharcodePhoto1[]={
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};
/******************************************************************************/
/*******************************************************************/
/**/
/*延时函数*/
/**/
/*******************************************************************/
voiddelay(intms)
{
while(ms--)
{
uchari;
for(i=0;i<150;i++)
{
_nop_();
_nop_();
_nop_();
_nop_();
}
}
}
/*******************************************************************/
/**/
/*延时函数*/
/**/
/*******************************************************************/
voiddelay1(intms)
{
while(ms--)
{
uchary;
for(y=0;y<100;y++);
}
}
/*******************************************************************/
/**/
/*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_();
P0=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;
P0=dat;
delayNOP();
LCD_EN=1;
delayNOP();
LCD_EN=0;
}
/********读数据********/
unsignedcharreadData(void)
{
unsignedcharRData;
while(lcd_busy());
P0=0xff;
LCD_RS=1;
LCD_RW=1;
LCD_EN=0;
LCD_EN=1;
RData=P0;//RData=dataPort;
LCD_EN=0;
returnRData;
}
/*******************************************************************/
/**/
/*LCD初始化设定*/
/**/
/*******************************************************************/
voidlcd_init()
{
LCD_PSB=1;//并口方式
LCD_RST=