代码解释(结尾有完整代码)
巴法云私钥及主题
String UID = "9XXX24844f759f7b134a9XXXXXXXXXXX"; //用户私钥,可在控制台获取,修改为自己的UID
String TOPIC4 = "lghz001"; //主题名字,可在控制台新
控制角度设置
void openlock() {
mySerial.print("a");
delay(50);
// Serial.println("openlock");
servo.attach(servoPin);
servo.write(90);//控制角度90度
delay(2500);
servo.write(0);
delay(1500);
servo.detach();
mySerial.print("b");
}
卡号读取并写入程序内
void check(String temphex)
{
// Serial.println("check");
if (temphex == "310XXXX")
{
// Serial.println(temphex);灏的公交卡
openlock();
}
步骤1
:注册巴法云获取私钥及主题名
新建TCP主题,名称结尾001
可修改昵称
步骤2
:米家其他平台添加巴法云
步骤3
烧录程序,接好线
跟你的小爱同学说声开门就可以
接线看以下文章http://t.csdn.cn/qlE4t
这里是引用添加链接描述
步骤4(该步骤后期出教程)
通过AppInventor制作软件,可实现手机app控制舵机
代码
#include <ESP8266WiFi.h>
#define server_ip "bemfa.com" //巴法云服务器地址默认即可
#define server_port "8344" //服务器端口,tcp创客云端口8344
//********************需要修改的部分*******************//
#define wifi_name "526" //WIFI名称,区分大小写,不要写错
#define wifi_password "qing1471815xxxx." //WIFI密码
#include <SPI.h>
#include <Servo.h>
#include <SoftwareSerial.h>
//手动安装
#include <MFRC522.h>
#define RST_PIN 5 // 配置针脚
#define SS_PIN 4
#define TOUCH_SIG D8
SoftwareSerial mySerial(D0, D3);
MFRC522 mfrc522(SS_PIN, RST_PIN); // 创建新的RFID实例
MFRC522::MIFARE_Key key;
Servo servo;
unsigned long previousMillis = 0; //毫秒时间记录
int servoPin = 2;//D4
String UID = "9XXX24844f759f7b134a9XXXXXXXXXXX"; //用户私钥,可在控制台获取,修改为自己的UID
String TOPIC4 = "lghz001"; //主题名字,可在控制台新建///////////////////////////////////////////////////////////////////////////////////////////
//**************************************************//
//最大字节数
#define MAX_PACKETSIZE 512
//设置心跳值60s
#define KEEPALIVEATIME 60*1000
//tcp客户端相关初始化,默认即可
WiFiClient TCPclient;
String TcpClient_Buff = "";//初始化字符串,用于接收服务器发来的数据
unsigned int TcpClient_BuffIndex = 0;
unsigned long TcpClient_preTick = 0;
unsigned long preHeartTick = 0;//心跳
unsigned long preTCPStartTick = 0;//连接
bool preTCPConnected = false;
//相关函数初始化
//连接WIFI
void doWiFiTick();
void startSTA();
//TCP初始化连接
void doTCPClientTick();
void startTCPClient();
void sendtoTCPServer(String p);
//led控制函数,具体函数内容见下方
/*
*发送数据到TCP服务器
*/
void sendtoTCPServer(String p){
if (!TCPclient.connected())
{
Serial.println("Client is not readly");
return;
}
TCPclient.print(p);
}
/*
*初始化和服务器建立连接
*/
void startTCPClient(){
if(TCPclient.connect(server_ip, atoi(server_port))){
Serial.print("\nConnected to server:");
Serial.printf("%s:%d\r\n",server_ip,atoi(server_port));
String tcpTemp=""; //初始化字符串
tcpTemp = "cmd=1&uid="+UID+"&topic="+TOPIC4+"\r\n"; //构建订阅总指令
///////////////////////////////////////////////////////////////////////
sendtoTCPServer(tcpTemp); //发送订阅指令
tcpTemp="";//清空
preTCPConnected = true;
preHeartTick = millis();
TCPclient.setNoDelay(true);
}
else{
Serial.print("Failed connected to server:");
Serial.println(server_ip);
TCPclient.stop();
preTCPConnected = false;
}
preTCPStartTick = millis();
}
/*
*检查数据,发送心跳
*/
void doTCPClientTick(){
//检查是否断开,断开后重连
if(WiFi.status() != WL_CONNECTED) return;
if (!TCPclient.connected()) {//断开重连
if(preTCPConnected == true){
preTCPConnected = false;
preTCPStartTick = millis();
Serial.println();
Serial.println("TCP Client disconnected.");
TCPclient.stop();
}
else if(millis() - preTCPStartTick > 1*1000)//重新连接
startTCPClient();
}
else
{
if (TCPclient.available()) {/////////////////////////////收数据
char c =TCPclient.read();
TcpClient_Buff +=c;
TcpClient_BuffIndex++;
TcpClient_preTick = millis();
if(TcpClient_BuffIndex>=MAX_PACKETSIZE - 1){
TcpClient_BuffIndex = MAX_PACKETSIZE-2;
TcpClient_preTick = TcpClient_preTick - 200;
}
preHeartTick = millis();
}
if(millis() - preHeartTick >= KEEPALIVEATIME){//保持心跳
preHeartTick = millis();
Serial.println("--Keep alive:");
sendtoTCPServer("ping\r\n"); //发送心跳,指令需\r\n结尾,详见接入文档介绍
}
}
if((TcpClient_Buff.length() >= 1) && (millis() - TcpClient_preTick>=200))
{
TCPclient.flush();
Serial.print("Rev string: ");
TcpClient_Buff.trim(); //去掉首位空格
Serial.println(TcpClient_Buff); //打印接收到的消息
String getTopic = "";
String getMsg = "";
String getTopic2 = "";
String getMsg2 = "";
if(TcpClient_Buff.length() > 15){ //注意TcpClient_Buff只是个字符串,在上面开头做了初始化 String TcpClient_Buff = "";
//此时会收到推送的指令,指令大概为 cmd=2&uid=xxx&topic=light002&msg=off
int topicIndex = TcpClient_Buff.indexOf("&topic=")+7; //c语言字符串查找,查找&topic=位置,并移动7位,不懂的可百度c语言字符串查找
int msgIndex = TcpClient_Buff.indexOf("&msg="); //c语言字符串查找,查找&msg=位置
getTopic = TcpClient_Buff.substring(topicIndex,msgIndex); //c语言字符串截取,截取到topic,不懂的可百度c语言字符串截取
getMsg = TcpClient_Buff.substring(msgIndex+5); //c语言字符串截取,截取到消息
Serial.print("topic:------");
Serial.println(getTopic); //打印截取到的主题值
Serial.print("msg:--------");
Serial.println(getMsg); //打印截取到的消息值
}
if(getTopic=="lghz001"&&getMsg == "on"){ //如果是消息==打开
openlock2();
system_restart(); //系统重新复位
}
else if(getTopic=="lghz001"&&getMsg == "off"){ //如果是消息==关闭
}
TcpClient_Buff="";
TcpClient_BuffIndex = 0;
}
}
/*
*初始化wifi连接
*/
void startSTA(){
WiFi.disconnect();
WiFi.mode(WIFI_STA);
WiFi.begin(wifi_name, wifi_password);
}
/**************************************************************************
WIFI
***************************************************************************/
/*
WiFiTick
检查是否需要初始化WiFi
检查WiFi是否连接上,若连接成功启动TCP Client
控制指示灯
*/
void doWiFiTick(){
static bool startSTAFlag = false;
static bool taskStarted = false;
static uint32_t lastWiFiCheckTick = 0;
if (!startSTAFlag) {
startSTAFlag = true;
startSTA();
}
//未连接1s重连
if ( WiFi.status() != WL_CONNECTED ) {
if (millis() - lastWiFiCheckTick > 1000) {
lastWiFiCheckTick = millis();
}
}
//连接成功建立
else {
if (taskStarted == false) {
taskStarted = true;
Serial.print("\r\nGet IP Address: ");
Serial.println(WiFi.localIP());
startTCPClient();
}
}
}
void rc522() {
// 寻找新卡
if ( ! mfrc522.PICC_IsNewCardPresent()) {
//Serial.println("没有找到卡");
return;
}
// 选择一张卡
if ( ! mfrc522.PICC_ReadCardSerial()) {
// Serial.println("没有卡可选");
return;
}
// 显示卡片的详细信息
Serial.print("卡片 UID:");
dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size);
}
/**
将字节数组转储为串行的十六进制值
*/
void dump_byte_array(byte *buffer, byte bufferSize) {
String temphex = "";
for (byte i = 0; i < bufferSize; i++) {
// Serial.print(buffer[i] < 0x10 ? " 0" : " ");
// Serial.print(buffer[i], HEX);
temphex += tohex(buffer[i]);
}
Serial.println(temphex);
delay(100);
check(temphex);
}
//十进制转十六进制
String tohex(int n) {
if (n == 0) {
return "00"; //n为0
}
String result = "";
char _16[] = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
const int radix = 16;
while (n) {
int i = n % radix; // 余数
result = _16[i] + result; // 将余数对应的十六进制数字加入结果
n /= radix; // 除以16获得商,最为下一轮的被除数
}
if (result.length() < 2) {
result = '0' + result; //不足两位补零
}
return result;
}
//获取状态
boolean get_touch() {
boolean touch_stat = 0;
touch_stat = digitalRead(TOUCH_SIG); //读入状态
return touch_stat;
}
void openlock() {
mySerial.print("a");
delay(50);
// Serial.println("openlock");
servo.attach(servoPin);
servo.write(90);
delay(2500);
servo.write(0);
delay(1500);
servo.detach();
mySerial.print("b");
}
void openlock2() {
mySerial.print("a");
delay(50);
// Serial.println("openlock");
servo.attach(servoPin);
servo.write(90);
delay(9500);
servo.write(0);
delay(1500);
servo.detach();
mySerial.print("b");
}
void check(String temphex)
{
// Serial.println("check");
if (temphex == "310XXX")
{
// Serial.println(temphex);灏的公交卡
openlock();
}
else if (temphex == "36D9XXXX")
{
// Serial.println(temphex);灏的校园卡
openlock();
}
}
else
{
mySerial.print("d");
}
}
// 初始化,相当于main 函数
void setup() {
mySerial.begin(115200);
delay(100);
SPI.begin(); // SPI开始
mfrc522.PCD_Init(); // Init MFRC522 card
delay(100);
servo.attach(servoPin);
servo.write(0);
delay(200);
servo.write(0);
delay(200);
servo.detach();
mySerial.print("c");
Serial.println("Beginning...");
}
//循环
void loop() {
doWiFiTick();
doTCPClientTick();
rc522();
}