51單片機控制12864繪制序列槽發送的距離變化曲線
資料采集端使用STM32為主要,超音波子產品測距,測距資訊經過壓縮,序列槽發送給51單片機,51單片機控制12864顯示距離變化曲線。
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLiAzNfRHLGZkRGZkRfJ3bs92YsYTMfVmepNHL4tmaNRTTE9UeRpHW4Z0MMBjVtJWd0ckW65UbM5WOHJWa5kHT20ESjBjUIF2X0hXZ0xCMx81dvRWYoNHLrdEZwZ1Rh5WNXp1bwNjW1ZUba9VZwlHdssmch1mclRXY39CXldWYtlWPzNXZj9mcw1ycz9WL49zZuBnL2UTM3MTO1QTM2ETNwEjMwIzLc52YucWbp5GZzNmLn9Gbi1yZtl2Lc9CX6MHc0RHaiojIsJye.png)
程式
#include<reg52.h>
#include<math.h>
#include"ZB.h"
#define uchar unsigned char
#define uint unsigned int
#define LCD_databus P0 //LCD資料總線連接配接P0口
sbit RS=P2^6;
sbit RW=P2^5;
sbit EN=P2^7;//LCD12864三個控制位
sbit DQ=P2^3;//DS18B20資料線
sbit KEY1=P3^2;
sbit KEY2=P3^3;
sbit KEY3=P3^4;
uchar key_value;
uchar DisTance; //距離作為橫軸13-127 X 13-127
uchar RSSI; //信号強度作為縱軸20-63 Y 0-39
unsigned Interrupt_Flag=1;
unsigned int receiveData;
uchar HZ1[]="周期";
uchar HZ2[]="幅度";
//uchar DELE_DATA[115];
void delay(uint i) //延時函數
{
while(--i);
}
void Read_busy() //LCD12864忙檢測
{
RS=0;
RW=1;
EN=1;
LCD_databus=0xFF;
while(LCD_databus & 0x80); //判斷最高位,1---busy,0---Nobusy
EN=0;
}
void write_LCD_command(uchar value)//寫指令
{
RS=0;
RW=0;
EN=1;
LCD_databus=value;
delay(7);
EN=0;
}
void write_LCD_data(uchar value)//寫資料
{
RS=1;
RW=0;
EN=1;
LCD_databus=value;
delay(7);
EN=0;
}
void init_LCD() //初始化LCD
{
write_LCD_command(0x30); //8位數,基本指令
delay(100);
write_LCD_command(0x30);
delay(37);
write_LCD_command(0x0C); //開顯示,不顯示光标,光标不閃爍
delay(100);
write_LCD_command(0x01); //清屏指令
delay(100);
write_LCD_command(0x06); //沒寫入資料,位址指針加1
}
void Clear_GDRAM() //清楚GDRAM
{
uchar x,y;
for(y=0;y<64;y++)
{
for(x=0;x<16;x++)
{
write_LCD_command(0x34);
write_LCD_command(y+0x80); //先送垂直位址
write_LCD_command(x+0x80); //後送水準位址
write_LCD_command(0x30); //基本指令
write_LCD_data(0x00); //寫入資料0
write_LCD_data(0x00);
}
}
}
uchar ReadByte() //讀LCD
{
uchar Read_value;
Read_busy();
RS=1;
RW=1;
EN=0;
EN=1;
Read_value=LCD_databus;
EN=0;
return Read_value;
}
void display_BMP(uchar *address)//顯示圖檔
{
uchar i,j;
for(i=16;i<32;i++)
{
write_LCD_command(0x80+i); //先送垂直位址
write_LCD_command(0x80); //再送水準位址
for(j=0;j<16;j++)
{
write_LCD_data(*address);//寫入資料
address++;
}
}
for(i=0;i<32;i++)
{
write_LCD_command(0x80+i);//先送垂直位址
write_LCD_command(0x88); //再送水準位址
for(j=0;j<16;j++)
{
write_LCD_data(*address);
address++;
}
}
}
void Draw_dots(uchar x,uchar y,uchar color)
{
uchar ROW,xlabel,xlabel_bit;
uchar Read_H,Read_L; //讀LCD中的資料
write_LCD_command(0x34); //擴充指令
write_LCD_command(0x36); //打開繪圖指令
xlabel=x>>4; //取16*16首位址
xlabel_bit=x & 0x0F; //計算該點在16位資料的第幾位
if(y<32) //如果是上半屏,上下半屏y都是0--31
{
ROW=y;
}
else //顯示的是下半屏
{
ROW=y-32;
xlabel+=8; //規定顯示在下半屏
}
write_LCD_command(ROW+0x80); //送入垂直位址
write_LCD_command(xlabel+0x80);//再送入水準位址
ReadByte(); //讀取目前GDRAM資料前腰進行一次空讀,接下來就可以讀出資料了
Read_H=ReadByte(); //讀高8位
Read_L=ReadByte(); //讀低8位
write_LCD_command(ROW+0x80); //送入垂直位址
write_LCD_command(xlabel+0x80); //再送入水準位址
if(xlabel_bit<8)
{
switch(color)
{
case 0:Read_H &= (~(0x01<<(7-xlabel_bit)));//若變白
break;
case 1:Read_H |= (0x01<<(7-xlabel_bit));//若塗黑
break;
case 2:Read_H ^= (0x01<<(7-xlabel_bit));//若反轉
break;
default:break;
}
write_LCD_data(Read_H);//将資料寫入GDRAM
write_LCD_data(Read_L);//先寫高位,再寫低位(位址指針順序)
}
else
{
switch(color)//color設定
{
case 0: Read_L &= (~(0x01<<(15-xlabel_bit)));//若變白
break;
case 1: Read_L |= (0x01<<(15-xlabel_bit));//若塗黑
break;
case 2: Read_L ^= (0x01<<(15-xlabel_bit));//若反轉
break;
default:break;
}
write_LCD_data(Read_H);
write_LCD_data(Read_L);//寫入資料
}
write_LCD_command(0x30);//回到普通模式
}
void Usart() interrupt 4
{
Interrupt_Flag=0;
RSSI=SBUF;
RI = 0;
SBUF=RSSI;
while(!TI);
TI=0;
}
void uart(void)
{
SCON=0x40;
REN=1;
TMOD=0x20;
TH1=0xfd,TL1=0xfd;
TR1=1;
ES=1; //打開接收中斷
EA=1; //打開總中斷
}
void main()
{
uchar i;
uchar w=10,A=10; //A是正弦波的振幅
uart();
init_LCD();
Clear_GDRAM();
write_LCD_command(0x36);
//display_BMP(ZB); //坐标
while(1)
{
for(i=13;i<128;i++) //畫圖 Y軸方向0-39 X = 13-127
{
while(Interrupt_Flag==1); //等待序列槽中斷,接收資料後标志位清零,進行畫點
Draw_dots(i,RSSI,1); //将得到的資料進行顯示
Interrupt_Flag=1; //從置标志位,繼續等待
}
Clear_GDRAM(); //清屏函數
write_LCD_command(0x36);
// display_BMP(ZB); //坐标
}
}