stm32 串口发送一帧数据（异或值数据）

在进行数据传输的时候，发送一帧数据，为了保证其安全性，可以对一帧数据里面的东西进行“加密”

#include <stdio.h>

typedef struct My_Test
{
  int head;   //帧头
  int length; 
  int type;
  int command;
  int work;
  int fre;
  int chan;
  int check;  //校验(异或值)
  int end;    //帧尾
};

void main()
{
  struct My_Test one_test;  
  unsigned char test_rx[]="zzzzzzz"; 
  int mycheck=0;
  int i=0;
  
  
  one_test.head = 0xAA;
  one_test.length = 0x01;
  one_test.type = 0x02;
  one_test.command = 0x03;
  one_test.work = 0x04;
  one_test.fre = 0x05;
  one_test.chan = 0x06;
  
  //从帧头后到异或值前的6位进行异或
  //把数据存在数组里面
  test_rx[0] = one_test.length;
  test_rx[1] = one_test.type;
  test_rx[2] = one_test.command;
  test_rx[3] = one_test.work;
  test_rx[4] = one_test.fre;
  test_rx[5] = one_test.chan;
  
  //对数组里的数据挨个进行异或
  for(i=0;i<6;i++)
  {
  	mycheck ^= test_rx[i];
  }
  
  //得出一帧数据的异或值
  one_t