Three channel ultrasonic ranging system based on 51 single chip microcomputer (timer ranging)

Functional specifications ：
be based on 51 Three way of MCU （ Can be more ）HCSR04、US100（io Pattern ） Ultrasonic ranging code

matters needing attention ：

processor ：STC89C51/STC89C52

display ：LCD1602

ultrasonic ：HCSR04、US100（io Pattern ）

The key task interface is reserved for users to use

Chinese notes of relevant pin connection ：

#include<reg52.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char
//--- Definition lcd1602 The use of IO mouth ---//
#define LCD_DATA P0
sbit RS=P2^7;
sbit RW=P2^6;
sbit EN=P2^5;
//--- Definition   Key   The use of IO mouth ---//
sbit key1=P1^5; 
sbit key2=P1^6; 
sbit key3=P1^7;
//--- Definition  led  The use of IO mouth ---//
sbit led=P2^1;
//HCSR04/US100 Ultrasonic interface 
sbit Trig1 = P2^0;  
sbit Echo1 = P2^1;

sbit Trig2 = P2^2;  
sbit Echo2 = P2^3;

sbit Trig3 = P3^7;  
sbit Echo3 = P3^6;

Main function program ：

void 
main()
{
    
    lcd_init(); 									//1602 initialization 
	Timer_Init();	 								// Initialize the timer 
    while(1)										// Cyclic reading   And update the data display 
    {
    
  		key_scan();	  								// Scan button （ reserve ）
		get_distance(1);							// Computational ultrasound 1 distance 
		dis_str(0,0,"US1:");dis_shu(4,0,distance1);	// ultrasonic 1 Distance display 
		get_distance(2);							// Computational ultrasound 2 distance 
	    dis_str(0,1,"US2:");dis_shu(4,1,distance2);	// ultrasonic 2 Distance display 
		get_distance(3);							// Computational ultrasound 3 distance 
	    dis_str(9,1,"US3:");dis_shu(13,1,distance3);// ultrasonic 3 Distance display  
    }
}

See the comments section for links to all the information , Please leave a message if you have any questions ~
author ：amusen
Time ：2022.4
I wish good ！