android的WIFI小车编程介绍
发表于：2024-11-28 作者：热门IT资讯网编辑
编辑最后更新 2024年11月28日，今天小编跟大家分享的是android的WIFI小车编程介绍，android中的WIFI小车编程注意事项有哪些，为了让大家更加了解android的WIFI小车编程，给大家总结了以下内容，一起往下看吧。小
今天小编跟大家分享的是android的WIFI小车编程介绍，android中的WIFI小车编程注意事项有哪些，为了让大家更加了解android的WIFI小车编程，给大家总结了以下内容，一起往下看吧。
小车是四个轮子的，每个轮子上都有电机驱动，前进后退的时候四个轮子同时前进和后退，转弯的时候，小车两边的轮子按反方向转。
为了达到更好的操作效果（一直按下前进，小车前进，按下左右转小车左右转，松开左右转，小车继续前进。松开前进，小车停止。后退同理），在单片机程序里加入了前进或后退的标志位。先说明一下，，，，，，
按下前进向单片机发送'0'，按下后退向单片机发送'1'，按下左转向单片机发送'2',按下右转向单片机发送'3'，松开前进或后退向单片机发送'5'，松开左转或右转向单片机发送'6'，这样子发数据也是为了获得更好的操作体验
前进 后退 左转 右转按钮是使用的setOnTouchListener方法，以便在按钮按下或松开时发送数据，
就看一下前进代码
我在前面声明了一下
//前进 private OnTouchListener forwordButtonTouch = new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN://如果按下 try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("0".getBytes());//发送0 } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; case MotionEvent.ACTION_UP://如果松开 try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("5".getBytes());//发送'5' } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } default: break; } return false; } };//源码package com.wifi_Contrl;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.net.InetAddress;import java.net.Socket;import android.annotation.SuppressLint;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;@SuppressLint("ClickableViewAccessibility") public class MainActivity extends Activity { boolean isConnect=true;//连接还是断开 Button connectButton;//定义连接按钮 Button forwordButton;//定义前进按钮 Button backButton;//定义后退按钮 Button leftButton;//定义左转按钮 Button righButton;//定义右转按钮 EditText ipEditText;//定义ip输入框 EditText portText;//定义端口输入框 Socket socket = null;//定义socket private InputStream inputStream=null;//定义输入流 private OutputStream outputStream=null;//定义输出流 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); connectButton = (Button) findViewById(R.id.btConnect); forwordButton = (Button) findViewById(R.id.btqianjin); backButton = (Button) findViewById(R.id.bthoutui); leftButton = (Button) findViewById(R.id.btzuozhuan); righButton = (Button) findViewById(R.id.btyuozhuan); ipEditText = (EditText) findViewById(R.id.etIP); portText = (EditText) findViewById(R.id.etPort); connectButton.setOnClickListener(connectButtonListener); forwordButton.setOnTouchListener(forwordButtonTouch); backButton.setOnTouchListener(backButtonTouch); leftButton.setOnTouchListener(leftButtonTouch); righButton.setOnTouchListener(righButtonTouch); } //连接 private OnClickListener connectButtonListener = new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub if (isConnect == true) //标志位 = true表示连接 { isConnect = false;//置为false connectButton.setText("断开");//按钮上显示--断开 //打开连接线程 Connect_Thread connect_Thread = new Connect_Thread(); connect_Thread.start(); } else //标志位 = false表示退出连接 { isConnect = true;//置为true connectButton.setText("连接");//按钮上显示连接 Toast.makeText(MainActivity.this,"已退出连接！", Toast.LENGTH_SHORT).show(); try { socket.close();//关闭连接 socket=null; } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }; //前进 private OnTouchListener forwordButtonTouch = new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("0".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; case MotionEvent.ACTION_UP: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("5".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } default: break; } return false; } }; //后退 private OnTouchListener backButtonTouch = new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("1".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; case MotionEvent.ACTION_UP: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("5".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } default: break; } return false; } }; //左转 private OnTouchListener leftButtonTouch = new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("2".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; case MotionEvent.ACTION_UP: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("6".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } default: break; } return false; } }; //右转 private OnTouchListener righButtonTouch = new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("3".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } break; case MotionEvent.ACTION_UP: try { //获取输出流 outputStream = socket.getOutputStream(); //发送数据 //outputStream.write(msgEditText.getText().toString().getBytes()); outputStream.write("6".getBytes()); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } default: break; } return false; } }; //连接线程 class Connect_Thread extends Thread//继承Thread { public void run()//重写run方法 { try { if (socket == null) { //用InetAddress方法获取ip地址 InetAddress ipAddress = InetAddress.getByName(ipEditText.getText().toString()); int port =Integer.valueOf(portText.getText().toString());//获取端口号 socket = new Socket(ipAddress, port);//创建连接地址和端口 if (socket !=null) { runOnUiThread(new Runnable() { public void run() { // TODO Auto-generated method stub Toast.makeText(MainActivity.this,"已成功连接！", Toast.LENGTH_SHORT).show(); } }); } } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }}//布局源码，大神勿喷，小弟才入门android，所以关于布局还，，，，，
再看单片机，因为学实时操作系统UCOSII的时候，写程序就养成了这样写程序习惯，如果对于这样
#ifndef _USART_C_//如果没有定义_USART_C_
#define _USART_C_ extern
#else
#define _USART_C_
#endif
_USART_C_ unsigned char Usart_Receive[20];
_USART_C_ unsigned char Usart_Cnt;
_USART_C_ bit Usart_AT_flage;
_USART_C_ bit Command_Flag;
_USART_C_ unsigned char UsartData;
_USART_C_ void InitUART(void);//串口初始化
_USART_C_ void SendOneByte(unsigned char c);//发送字节型数据
_USART_C_ void UartSends(unsigned char *str);//串行口连续发送char型数组，遇到终止号/0将停止
其实这样写，有助于各个c文件之间调用变量。说一下
#ifndef _USART_C_//如果没有定义_USART_C_
#define _USART_C_ extern//就定义_USART_C_ 为extern
#else//否则
#define _USART_C_就定义_USART_C_为空
#endif
如果是自身文件编译由于我在USART.C文件的开头加上了#define _USART_C_所以，就定义_USART_C_为空
即 unsigned char Usart_Receive[20];
如果别的文件编译那么因为别的文件没有定义#define _USART_C_ 所以就定义_USART_C_ 为extern
即extern unsigned char Usart_Receive[20];
对于extern 这应该不陌生吧，好了接着往下看，
不好意思再啰嗦下，我把所有的.h文件全放在了一个.h文件中，这样在每个c文件的开头只需加上#include "include.h"就方便多了
#define _MAIN_C_#include "include.h"sbit a1 = P1^0;//前左轮前进sbit a2 = P1^1;//前左轮后退sbit a3 = P1^2;//前右轮前进sbit a4 = P1^3;//前右轮后进sbit a5 = P1^4;//后左轮前进sbit a6 = P1^5;//后左轮后退sbit a7 = P1^6;//后右轮前进sbit a8 = P1^7;//后右轮后进bit forword_flag=0;bit back_flag=0;unsigned char CWMODE[]="AT+CWMODE=2\r\n"; //设置模块的工作的模式为AP模式unsigned char RST[]="AT+RST\r\n"; //重启模块使AT+CWMODE=2模式生效unsigned char CIPMUX[]="AT+CIPMUX=1\r\n"; //启动多连接unsigned char CIPSERVER[]="AT+CIPSERVER=1,8080\r\n";//开启服务器模式，端口号8080void delay1s(void) //误差 -0.00000000024us{ unsigned char a,b,c; for(c=95;c>0;c--)for(b=26;b>0;b--)for(a=185;a>0;a--);}//多连接AP模式void ManyConnect_AP(){ P0=0x00; while(1) { UartSends(CWMODE);//返回ok delay1s(); if(Usart_AT_flage ==1) { if(strstr(Usart_Receive, "OK") ) { Usart_AT_flage = 0; P0 = 0x01; break; } } } UartSends(RST);//返回一大溜，不用判断返回delay1s(); delay1s(); while(1) { UartSends(CIPMUX);//返回ok delay1s(); if(Usart_AT_flage ==1) { if(strstr(Usart_Receive, "OK") ) { Usart_AT_flage = 0; P0 = 0x03; break; } } } while(1) { UartSends(CIPSERVER);//返回ok，多了也返回ok delay1s(); if(Usart_AT_flage ==1) { if(strstr(Usart_Receive, "OK") ) { Usart_AT_flage = 0; P0 = 0x07; break; } } }}void main(){ InitUART(); while(1) { ManyConnect_AP();//多连接AP模式while(1) { //由于消息的开头是+IP 故做此判断if((Usart_Receive[0]=='+')&&(Usart_Receive[1]=='I')&&(Usart_Receive[2]=='P')) { if((Usart_Receive[3]=='D')&&(Usart_Receive[6]==',')) { if(Usart_Receive[9]=='0')//前进{forword_flag = 1;//前进标志位置一back_flag = 0; //后退标志位置零a1 = 1;//前左轮前进a2 = 0;//前左轮后退a3 = 1;//前右轮前进a4 = 0;//前右轮后进a5 = 1;//后左轮前进a6 = 0;//后左轮后退a7 = 1;//后右轮前进a8 = 0;//后右轮后进/*sbit a1 = P1^0;//前左轮前进sbit a2 = P1^0;//前左轮后退sbit a3 = P1^1;//前右轮前进sbit a4 = P1^2;//前右轮后进sbit a5 = P1^3;//后左轮前进sbit a6 = P1^0;//后左轮后退sbit a7 = P1^0;//后右轮前进sbit a8 = P1^1;//后右轮后进*/ }if(Usart_Receive[9]=='1')//后退{forword_flag = 0;//前进标志位置一back_flag = 1; //后退标志位置零a1 = 0;//前左轮前进a2 = 1;//前左轮后退a3 = 0;//前右轮前进a4 = 1;//前右轮后进a5 = 0;//后左轮前进a6 = 1;//后左轮后退a7 = 0;//后右轮前进a8 = 1;//后右轮后进}if(Usart_Receive[9]=='6')//左右转停止{if(forword_flag == 1 && back_flag == 0)//上一次按下的是前进，没松开{ //前进a1 = 1;//前左轮前进a2 = 0;//前左轮后退a3 = 1;//前右轮前进a4 = 0;//前右轮后进a5 = 1;//后左轮前进a6 = 0;//后左轮后退a7 = 1;//后右轮前进a8 = 0;//后右轮后进}if(forword_flag == 0 && back_flag == 1)//上一次按下的是后退，没松开{ //后退a1 = 0;//前左轮前进a2 = 1;//前左轮后退a3 = 0;//前右轮前进a4 = 1;//前右轮后进a5 = 0;//后左轮前进a6 = 1;//后左轮后退a7 = 0;//后右轮前进a8 = 1;//后右轮后进}if(forword_flag == 0 && back_flag == 0)//上一次松开了前进或后退{ //停止a1 = 0;//前左轮前进a2 = 0;//前左轮后退a3 = 0;//前右轮前进a4 = 0;//前右轮后进a5 = 0;//后左轮前进a6 = 0;//后左轮后退a7 = 0;//后右轮前进a8 = 0;//后右轮后进} }if(Usart_Receive[9]=='2')//左转{a1 = 0;//前左轮前进a2 = 1;//前左轮后退a3 = 1;//前右轮前进a4 = 0;//前右轮后进a5 = 0;//后左轮前进a6 = 1;//后左轮后退a7 = 1;//后右轮前进a8 = 0;//后右轮后退}if(Usart_Receive[9]=='3')//右转{a1 = 1;//前左轮前进a2 = 0;//前左轮后退a3 = 0;//前右轮前进a4 = 1;//前右轮后进a5 = 1;//后左轮前进a6 = 0;//后左轮后退a7 = 0;//后右轮前进a8 = 1;//后右轮后退}if(Usart_Receive[9]=='5')//停止{forword_flag = 0;//前进标志位置零back_flag = 0; //后退标志位置零a1 = 0;//前左轮前进a2 = 0;//前左轮后退a3 = 0;//前右轮前进a4 = 0;//前右轮后进a5 = 0;//后左轮前进a6 = 0;//后左轮后退a7 = 0;//后右轮前进a8 = 0;//后右轮后进} } } } }}#define _USART_C_#include "include.h"unsigned char Usart_Receive[20]={0};unsigned char Usart_Cnt=0;bit Usart_AT_flage;bit flage;bit Command_Flag;void InitUART(void){ TMOD = 0x20; SCON = 0x50; TH1 = 0xFD; TL1 = TH1; PCON = 0x00; EA = 1; ES = 1; TR1 = 1;}void SendOneByte(unsigned char c){ SBUF = c; while(!TI); TI = 0; }//串行口连续发送char型数组，遇到终止号/0(空格)将停止void UartSends(unsigned char *str){ while(*str!='\0') { SBUF=*str; while(!TI);//等待发送完成信号（TI=1）出现 TI=0; str++; }}void UARTInterrupt(void) interrupt 4{ RI=0; Usart_Receive[Usart_Cnt]=SBUF;//接收串口数据 Usart_Cnt++;// //返回数据以回车结尾，有回车，而且数据个数大于2，说明接收到了数据 if(Usart_Receive[Usart_Cnt-2]=='\r' && Usart_Receive[Usart_Cnt-1]=='\n' && Usart_Cnt >= 2) { Usart_Cnt = 0;//接收数据计数清零 Usart_AT_flage = 1;//数据接收成功标志位 } else if(Usart_Cnt > 20)// { Usart_Cnt = 0; } }#ifndef __USART_H_#define __USART_H_#ifndef _USART_C_#define _USART_C_ extern#else#define _USART_C_#endif_USART_C_ unsigned char Usart_Receive[20];_USART_C_ unsigned char Usart_Cnt;_USART_C_ bit Usart_AT_flage;_USART_C_ bit Command_Flag;_USART_C_ unsigned char UsartData;_USART_C_ void InitUART(void);//串口初始化_USART_C_ void SendOneByte(unsigned char c);//发送字节型数据_USART_C_ void UartSends(unsigned char *str);//串行口连续发送char型数组，遇到终止号/0将停止#endif
#include#include "USART.h"#include
看完上诉内容，你们掌握android的WIFI小车编程方法了吗？如果想了解更多，欢迎关注行业资讯频道！