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基于51单片机串口加密系统（分主机从机）

功能：
1.通过两个单片机串口实现信息的加密和解密
2.按键完成信息的选择和发送
3.通过屏幕实时显示选择的信息和加密解密后的信息

一、原理图

二、部分代码

#include <reg51.h>
#include "usart.h"
#include "lcd.h"
#include "stdio.h"
#include "string.h"

sbit Key1 = P1^0;
sbit Key2 = P1^1;
sbit Key3 = P1^2;
sbit Key4 = P1^3;


unsigned char j = 0;
unsigned char Len = 0;
unsigned char Confirm = 0;
unsigned char T_buffer[16];
unsigned char Tx_buffer[16];


unsigned char xianshi = 0;

void KEY_SCAN();


void main()
{
	LcdInit();
	Uart_Init();
	while(1)
	{
		KEY_SCAN();
		LcdShow();
		
		if(1 == Confirm)
		{
			Confirm = 0;
			Send_String(T_buffer);
			delay_ms(1000);
			delay_ms(1000);
			delay_ms(1000);
			xianshi = 0;
			LcdWriteCmd(0x01);// ÇåÆÁ
		}

	}
}

三、视频演示

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