main.c

基于STC51芯片系列STC89LE516X2的LCD显示源代码

//#include <STC89.h> 
#include <reg52.h> 
#include <intrins.h>
#include "mcu.h"
#include "kaixin.h" 
#include "ascii.h"


#define VopADD	3	//Vlcd 增加
#define VopSUB	4	//Vlcd 减少
#define DispDN	1	//画面向下翻
#define DispUP	2	//画面向上翻

//定义与 ADC 有关的特殊功能寄存器
sfr P1_ADC_EN = 0x97;               // A/D 转换功能允许寄存器
sfr ADC_CONTR = 0xC5;               // A/D 转换控制寄存器
sfr ADC_DATA  = 0xC6;               // A/D 转换结果寄存器

sbit LCD_CS1  =P3^3;                //sbit 数据类型 值域 0/1
sbit LCD_RST  =P3^4;
sbit LCD_RS1  =P3^5;
sbit LCD_WR1  =P3^6;
sbit LCD_RD1  =P3^7;

//#define DATAL P1
#define lcd_data P0

unsigned char contrst=0x31;

void delay_us(char us_value);
void delay_ms(unsigned int ms_value);
void init_RS232 (void);
void Send_Byte(char one_byte);
unsigned char get_AD_result(unsigned char channel);
unsigned char key_dowith(void);

void init_cpu(void);
void init_lcd(void);
void wr_cmd(unsigned char wrcmd);
void wr_data(unsigned char wrdata);
void disp_all(unsigned char value);
void disp_check(unsigned char value);
void disp_bmp(char *bmp);
//-----------------------------------------------------------------------------
//=============================================================================
//-----------------------------------------------------------------------------
void init_RS232 (void)          	// 串口初始化
{
    ES = 0;                         // 禁止串口中断
    SCON = 0x50;                    // 0101,0000  8位数据位， 无奇偶校验
    T2CON = 0x34;                   // 0011，0100， 由T2作为波特率发生器
    RCAP2H = 0xFF;                  // 时钟11.0592MHz,  9600 波特率
    RCAP2L = 0xDB;
    ES = 1;                         // 允许串口中断
}
//-----------------------------------------------------------------------------
void Send_Byte(char one_byte)      // 发送一个字节
{
    TI = 0;                         // 清零串口发送中断标志
    SBUF = one_byte;
    while (TI == 0);
    TI = 0;                         // 清零串口发送中断标志
}
//-----------------------------------------------------------------------------
unsigned char get_AD_result(unsigned char channel)
{
	unsigned char AD_finished = 0; 	// 存储 A/D 转换标志

	ADC_DATA =  0;
	ADC_CONTR  = channel; 			//选择 A/D 当前通道
	delay_us(1); 				//使输入电压达到稳定
	ADC_CONTR |= 0x08; 			//0000,1000 令 ADC_START = 1, 启动A/D转换
	AD_finished = 0;
	while ( AD_finished == 0 ) //等待A/D转换结束
	{
      	AD_finished = (ADC_CONTR & 0x10);  //0001,0000, ADC_FLAG ==1 测试A/D转换结束否
	}
	ADC_CONTR &= 0xF7;                  //1111,0111 令 ADC_START = 0, 关闭A/D转换,
	return (ADC_DATA);   // 返回 A/D 转换结果
}
//-----------------------------------------------------------------------------
unsigned char key_dowith(void)
{
	unsigned char value;

	value = get_AD_result(3);
	//Send_Byte(value);

	if((value<0xec)&&(value>0xe8)) 	return 1;
	else if((value<0xe2)&&(value>0xdd)) return 2; 
	else if((value<0xc7)&&(value>0xc0)) return 3;
	else if(value<0x10) 			return 4;
	else                                return 0;

}
//=============================================================================
void delay_us(char us_value)	//delay about 1 us
{
	while(us_value--)
	{
		_nop_();
		_nop_();
		_nop_();
	}
}
//-----------------------------------------------------------------------------
void delay_ms(unsigned int ms_value)	//delay about 1 ms
{
	unsigned int k;

	for(k=0;k<ms_value;k++)
	{
		delay_us(200);
	}
}
//-----------------------------------------------------------------------------
void init_cpu()	//Initial 89C52
{
      delay_ms(5);
      lcd_data=0x00;
	LCD_RST = 0;
	LCD_CS1 = 1;
	LCD_RS1 = 0;
	LCD_WR1 = 1;
	LCD_RD1 = 1;
      delay_ms(5);
	LCD_RST = 1;
	delay_ms(50);
}
//-----------------------------------------------------------------------------
void wr_cmd(unsigned char wrcmd)
{
      LCD_RS1 = 0;      //select instruction
	LCD_CS1 = 0;
	lcd_data=wrcmd;      
	LCD_WR1 = 0;
      //delay_us(1);
	LCD_WR1 = 1;
      //delay_us(1);
	LCD_CS1 = 1;
	//delay_us(1);
	
}
//-----------------------------------------------------------------------------
void wr_data(unsigned char wrdata)
{
      LCD_RS1 = 1;      //select instruction
	LCD_CS1 = 0;
	lcd_data=wrdata;      
	LCD_WR1 = 0;
      //delay_us(1);
	LCD_WR1 = 1;
      //delay_us(1);
	LCD_CS1 = 1;
	//delay_us(1);
}
//-----------------------------------------------------------------------------
void init_lcd(void)
{

	wr_cmd(0xa4);	//EON=0,normal display
	wr_cmd(0xa6);	//REV=0,normal display
	wr_cmd(0xa0);	//ADC=0,SEG0->SEG131
	wr_cmd(0x40);	//Initial display line for COM0
	wr_cmd(0xc8);	//SHL select,COM63->COM0
	delay_us(1);

	wr_cmd(0x81);	//SET Register
	wr_cmd(contrst);

	delay_us(1);
	wr_cmd(0xa3);	//SET BIAS
	delay_us(1);
	wr_cmd(0x2f);
	delay_ms(1);
	wr_cmd(0xaf);	//dispaly on
	delay_ms(1);
}
//-----------------------------------------------------------------------------
void disp_all(unsigned char value)
{
	unsigned char ii,jj;

	for(ii=0;ii<8;ii++)
	{
		wr_cmd(0xb0+ii);
		wr_cmd(0x10);
		wr_cmd(0x00);
		for(jj=0;jj<128;jj++)
			wr_data(value);
	}
}
//-----------------------------------------------------------------------------
void disp_check(unsigned char value)
{
	unsigned char ii,jj;

	for(ii=0;ii<8;ii++)
	{
		wr_cmd(0xb0+ii);
		wr_cmd(0x10);
		wr_cmd(0x00);
		for(jj=0;jj<64;jj++)
		{
			wr_data(value);
			wr_data(~value);
		}
	}
}
//----------------------------------------------------------------------------------
void disp_bmp(char *bmp)
{
	unsigned char ii,jj;

	for(ii=0;ii<8;ii++)
	{
		wr_cmd(0xb0+ii);
		wr_cmd(0x10);
		wr_cmd(0x00);
		for(jj=0;jj<128;jj++) wr_data(bmp[ii*128+jj]);
	}
}
//-----------------------------------------------------------------------------
void show_contrst()
{
	unsigned char nn;
	unsigned char tmph,tmpl;

	tmph=contrst/10;
	tmpl=contrst%10;

	wr_cmd(0xb0);
	wr_cmd(0x10);
	wr_cmd(0x02);
	for(nn=0;nn<6;nn++)
		wr_data(num[tmph*6+nn]);
	for(nn=0;nn<6;nn++)
		wr_data(num[tmpl*6+nn]);
	delay_ms(200);
}
//----------------------------------------------------------------------------------
#define bmpMAX	5

void main(void)
{
	unsigned char dispID,dispIP;
	unsigned char keyValue;

	init_cpu();
	init_lcd();
	init_RS232();
	//disp_bmp(mcu);

	dispID = 0;
	dispIP = 1;

	while(1)
	{
		keyValue = key_dowith();
		if(keyValue>0)
		{
			switch(keyValue)
			{
				case DispDN:
					if(dispID<bmpMAX) dispID++;
					else              dispID = 0;
					dispIP = 1;
					break;
				case DispUP:
					if(dispID>1) dispID--;
					else         dispID = bmpMAX;
					dispIP = 1;   
					break;
				case VopADD:
					if(contrst<63) contrst++;
					wr_cmd(0x81);
					wr_cmd(contrst);
					delay_us(2);
					show_contrst();
					break;
				case VopSUB:
					if(contrst>0) contrst--;
					wr_cmd(0x81);
					wr_cmd(contrst);
					delay_us(2);
					show_contrst();
					break;
				default: break;
			}
		}

		//Send_Byte(key_dowith());
		//delay_ms(1000);

		if(dispIP)
		{
			dispIP = 0;
			switch(dispID)
			{
				case 0: disp_bmp(mcu); 		break;
				case 1: disp_bmp(kaixin);	break; 
				case 2: disp_all(0xff);		break;
				case 3: disp_all(0x00);		break;
				case 4: disp_check(0xAA);	break;
				case 5: disp_check(0x55);	break;
				default: break;
			}
			delay_ms(300);
		}
	}
}
//----------------------------------------------------------------------------------