lcd12864-12.c

以C8051F020单片机做的多功能计数器

#include "lcd12864-12.h"


//说明:清屏指令的执行时间为1.6ms,其余指令的执行时间为72us;



void LcdDelay(unsigned int num)
{
	while(num--);
}

void LcdInit(void)
{
	LcdWriteCmd(0x30);		//0x30--基本指令操作
	LcdWriteCmd(0x0c);		//开显示，关光标，不闪烁。
	LcdClear();				//清除显示
	LcdWriteCmd(0x06);	 	//指定在资料写入或读取时，光标的移动方向，DDRAM的地址计数器（AC）加1。 
//	LcdDrawClear();			//清空绘图RAM
}

void LcdClear(void)
{
//	LcdCheckBusy();
	LCD_RS=0;
	LCD_RW=0;
	LCD_DATA=0x01;
	LCD_E=1;
	LcdDelay(80);
 	LCD_E=0;
   	LcdDelay(2500);//大于1.6ms
}

void LcdWriteCmd(unsigned char dictate)
{
// 	LcdCheckBusy();
	LCD_RS=0;
	LCD_RW=0;
	LCD_DATA=dictate;
	LcdDelay(96);
	LCD_E=1;
	LcdDelay(80);
 	LCD_E=0;
	LcdDelay(140);
}

//向lcd控制芯片发送数据
void LcdWriteData(unsigned char datas)
{
//	LcdCheckBusy();
	LCD_RS=1;
	LCD_RW=0;
	LCD_DATA=datas;
	LCD_E=1;
	LcdDelay(80);
	LCD_E=0;
	LcdDelay(140);
}

//显示字符
void LcdShow(unsigned char x,unsigned char y,unsigned char *ASC_GB)
{
//	LcdCheckBusy();
	LcdSetCursor(x,y);
	while(*ASC_GB)
	{
		LcdWriteData(*ASC_GB);
		ASC_GB++;
	}
}

void LcdSetCursor(unsigned char x,unsigned char y)
{
	unsigned char xdata cursorPos[4][8]={{0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87},
							  		     {0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97},
							  		     {0x88,0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F},
							  		     {0x98,0x99,0x9A,0x9B,0x9C,0x9D,0x9E,0x9F}};
//	LcdCheckBusy();
	LcdWriteCmd(cursorPos[x][y]);
}

/*

void LcdSetState(bit bShowCursor,bit bReserverAndFlash)
{
	unsigned char bdata cmd=0x0c;
	if(bShowCursor)
		cmd+=0x02;
	if(bReserverAndFlash)
		cmd+=0x01;
	LcdWriteCmd(cmd);
}


void LcdSetCmdGather(bit isExtern)
{

	unsigned char bdata cmd=0x32;
	if(isExtern)
		cmd+=0x04;
	LcdWriteCmd(cmd);
}

void  LcdCheckBusy()
{
	LcdDelay(200);return;
	unsigned char b;
	P7=0xff;  
	LCD_RS=0; 
	LCD_RW=1; 
	while(1) 
	{ 
		delay(100);
		LCD_E=1; 
		delay(100);
		b=P7&0x80;
		if(b==0x00)
		{
	 		LCD_E=0; 
			break; 
		}
	}
}*/