x102_key.c

该文件中包括89系列 X102开发板的12232液晶屏AD转换器ADC0809,DA转换器DAC0832,I2C总线芯片24C02,RAM电路62256,发光二极管电路

#include <reg52.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <absacc.h>

#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long

sbit sm1623_dout=P1^0;
sbit sm1623_din=P1^1;
sbit sm1623_clk=P1^2;
sbit sm1623_stb=P1^3;
sbit sound=P1^5;

#define cs_led XBYTE[0xC000]

void delay(uchar delay_temp);//长延时
void delaym(uchar delaym_temp);//短延时
void disp(uchar dis);
void display();
uchar key(void);
uchar key_deal(void);

uchar i,j,k;
uchar temp_1;
uchar code_dis[6];

main(void)
{
start:	//---------------------------------------数码管显示测试1
	for(i=0;i<6;i++)code_dis[i]=1;
	display();//显示111111
	for(j=0;j<5;j++)
	{
		for(i=0;i<6;i++)code_dis[i]=i+j;	
		display();
		delay(0xff);
	}
	
	//---------------------------------------按键测试2
	for(i=0;i<6;i++)code_dis[i]=2;
	display();//显示222222
	
	temp_1=0;
	while(temp_1!=0x08)
	{
		temp_1=key_deal();
		switch(temp_1)
		{
			case 0:
				sound=1;
				cs_led=0xff;
				break;
			case 1:
				sound=0;
				cs_led=0xfe;
				break;
			case 2:
				sound=0;
				cs_led=0xfd;
				break;
			case 3:
				sound=0;
				cs_led=0xfb;
				break;
			case 4:
				sound=0;
				cs_led=0xf7;
				break;
			case 5:
				sound=0;
				cs_led=0xef;
				break;
			case 6:
				sound=0;
				cs_led=0xdf;
				break;
			case 7:
				sound=0;
				cs_led=0xbf;
				break;
			case 8:
				sound=0;
				cs_led=0x7f;
				delay(0x7f);
				break;
			default:
				sound=1;
				cs_led=0xff;
				break;
		}
	}
	sound=1;
	cs_led=0x00;
	goto start;
}

void delay(uchar delay_temp)//延时子程序
{
	uchar i,j;
	for(i=0;i<delay_temp;i++)
	{
		for(j=0;j<255;j++);
	}
}

void delaym(uchar delaym_temp)//延时子程序
{
	uchar i;
	for(i=0;i<delaym_temp;i++);
}

void disp(uchar dis)//送显示命令子程序
{
	uchar dis_i,dis_temp;
	dis_temp=0x01;
	for(dis_i=0;dis_i<8;dis_i++)
	{
		sm1623_clk=0;
		delaym(1);
		if((dis&dis_temp)==0){sm1623_din=0;}
		else{sm1623_din=1;}
		sm1623_clk=1;//上升沿输入数据
		delaym(1);
		dis_temp=dis_temp<<1;
	}
}

void display()//显示子程序
{
	uchar code_dis_d[6];
	uchar i;
	for(i=0;i<6;i++)//计算显示码
	{
		switch(code_dis[i])
		{
			case 1:
				code_dis_d[i]=0x06;
				break;
			case 2:
				code_dis_d[i]=0x5b;
				break;
			case 3:
				code_dis_d[i]=0x4f;
				break;
			case 4:
				code_dis_d[i]=0x66;
				break;
			case 5:
				code_dis_d[i]=0x6d;
				break;
			case 6:
				code_dis_d[i]=0x7d;
				break;
			case 7:
				code_dis_d[i]=0x07;
				break;
			case 8:
				code_dis_d[i]=0x7f;
				break;
			case 9:
				code_dis_d[i]=0x6f;
				break;
			case 10://显示黑
				code_dis_d[i]=0x00;
				break;
			case 11://显示A
				code_dis_d[i]=0x77;
				break;
			case 12://显示d
				code_dis_d[i]=0x5e;
				break;
			case 13://显示-
				code_dis_d[i]=0x40;
				break;
			case 14://显示8.
				code_dis_d[i]=0xff;
				break;
			default://显示0
				code_dis_d[i]=0x3f;
				break;
		}
	}
	sm1623_stb=0;
	disp(0x02);//显示模式6位12段
	sm1623_stb=1;
	delaym(1);
	sm1623_stb=0;
	disp(0x40);//设置数据
	sm1623_stb=1;
	delaym(1);
	sm1623_stb=0;
	disp(0xc0);//设置地址
	disp(code_dis_d[0]);//1
	disp(0x00);
	disp(code_dis_d[1]);//2
	disp(0x00);
	disp(code_dis_d[2]);//3
	disp(0x00);
	disp(code_dis_d[3]);//4
	disp(0x00);
	disp(code_dis_d[4]);//5
	disp(0x00);
	disp(code_dis_d[5]);//6
	disp(0x00);
	sm1623_stb=1;
	delaym(1);
	sm1623_stb=0;
	disp(0x8a);//控制显示
	sm1623_stb=1;
}

uchar key(void)//按键读数据子程序
{
	uchar key_i,key_temp,key_re;
	key_temp=0x00;
	for(key_i=0;key_i<8;key_i++)
	{
		sm1623_clk=0;//下降沿输出数据
		delaym(1);
		if(sm1623_dout==0){key_temp=key_temp&0x7f;}
		else{key_temp=key_temp|0x80;}
		key_re=key_temp;
		sm1623_clk=1;
		delaym(1);
		key_temp=key_temp>>1;
	}
	return key_re;
}

uchar key_deal(void)//按键处理子程序,返回按键编号
{
	uchar temp_k1,temp_k2;
	sm1623_stb=0;
	disp(0x42);//读键扫数据指令
	temp_k1=key()&0x1b;
	temp_k2=key()&0x1b;
	sm1623_stb=1;//取消片选，如果没有此语句按键5时，会出现按键1被按下的现象
	if(temp_k1!=0x00)
	{
		switch(temp_k1)
		{
			case 0x01:
				return 0x01;
				break;
			case 0x02:
				return 0x02;
				break;
			case 0x08:
				return 0x03;
				break;
			case 0x10:
				return 0x04;
				break;
			default:
				return 0x00;
				break;
		}
	}
	if(temp_k2!=0x00)
	{
		switch(temp_k2)
		{
			case 0x01:
				return 0x05;
				break;
			case 0x02:
				return 0x06;
				break;
			case 0x08:
				return 0x07;
				break;
			case 0x10:
				return 0x08;
				break;
			default:
				return 0x00;
				break;
		}
	}
	return 0x00;
}