Arduino使用ESP8266连接机智云物联网平台

前言

本文实现Arduino UNO R3通过ESP8266-01模块连接机智云平台，从而实现用手机APP远程点亮LED灯。

一、ESP8266模块本地调试

当我们参考机智云官网给的教程时，关于Arduino平台主要都是关于机智云官方自己的开发板Gokit的资料。但当我们只使用Arduino UNO R3接入机智云平台，有很多教程通过添加了两个按键来选择airlink和softap模式，其实我们只要在本地给ESP8266配好了网络连接，就不需要每次通过按键切换配网模式。

第一步：首先在官网下载机智云固件GAgent,

第二步：使用ESP8266下载工具ESPFlashDownloadTool，将固件下载至ESP8266中。

第三步：在机智云官网下载机智云串口调试助手,

将ESP8266通过串口转USB工具插在电脑上，安装好驱动，选择中确的驱动后，打开串口，填入在官网申请的product_key和Product Secret后，就能在右边看见数据点了，此时再打开指令界面，点击AirLink命令，ESP8266就进入了自动配网模式；

第四步：下载机智云移动端APP

打开APP,点击一键配置，输入家里的WiFi账号及密码，选择乐鑫，因为刚才我们已经将ESP8266设置成AirLink透传模式，现在通过APP就可以将家里的WiFi信息发送给ESP8266,此时APP发现新设备下会出现你的WiFi模组，点击后就会看到你定义的数据点了。

二、硬件搭建

2.1硬件连接图

LED接上220欧姆电阻，连在Arduino的D4上，ESP8266CH-PD和vcc都接高电平。

注意：

在给Arduino烧录程序的时候要断开ESP8266与Arduino的串口连接，否则会有干扰导致代码烧录不成功；
ESP8266-01只能供给3.3v电压，5v电压可能会烧坏WiFi模组

2.2项目源码

代码语言：javascript

复制

#include <Gizwits.h>
#include <Wire.h>
#include <SoftwareSerial.h>
int ledPin = 13;                 // LED connected to digital pin 13,it's used for status

int myledPin = 4;                 // my LED connected to digital pin 4

int sensorValue = 0;        // value read from the pot

bool varR_LED_OnOff = 0;

Gizwits myGizwits;
#define   KEY1              6

#define   KEY2              7

#define   KEY1_SHORT_PRESS  1

#define   KEY1_LONG_PRESS   2

#define   KEY2_SHORT_PRESS  4

#define   KEY2_LONG_PRESS   8

#define   NO_KEY            0

#define   KEY_LONG_TIMER    3

unsigned long Last_KeyTime = 0;
unsigned long gokit_time_s(void)

{

return millis() / 1000;

}
char gokit_key1down(void)

{

unsigned long keep_time = 0;

if (digitalRead(KEY1) == LOW)

{

delay(100);

if (digitalRead(KEY1) == LOW)

{

keep_time = gokit_time_s();

while (digitalRead(KEY1) == LOW)

{

if ((gokit_time_s() - keep_time) > KEY_LONG_TIMER)

{

Last_KeyTime = gokit_time_s();

return KEY1_LONG_PRESS;

}

} //until open the key
  if ((gokit_time_s() - Last_KeyTime) &gt; KEY_LONG_TIMER)
  {
    return KEY1_SHORT_PRESS;
  }
  return 0;
}
return 0;

}

return 0;

}
char gokit_key2down(void)

{

int unsigned long keep_time = 0;

if (digitalRead(KEY2) == LOW)

{

delay(100);

if (digitalRead(KEY2) == LOW)

{

keep_time = gokit_time_s();

while (digitalRead(KEY2) == LOW) //until open the key

{
    if ((gokit_time_s() - keep_time) &gt; KEY_LONG_TIMER)
    {
      Last_KeyTime = gokit_time_s();
      return KEY2_LONG_PRESS;
    }
  }

  if ((gokit_time_s() - Last_KeyTime) &gt; KEY_LONG_TIMER)
  {
    return KEY2_SHORT_PRESS;
  }
  return 0;
}
return 0;

}

return 0;

}
/*******************************************************

function      : gokit_keydown
Description   : check the gokit key1 or key2 event
return        : KEY1_LONG_PRESS  KEY1_SHORT_PRESS

               KEY2_LONG_PRESS  KEY2_SHORT_PRESS



                0-no keydown event.


Add by Alex.lin    --2014-12-25

******************************************************/

char gokit_keydown(void)

{

char ret = 0;

ret |= gokit_key2down();

ret |= gokit_key1down();

return ret;

}
void KEY_Handle(void)

{

/*  Press for over than 3 second is Long Press  */

switch (gokit_keydown())

{

case KEY1_SHORT_PRESS:

// Serial.println(F("KEY1_SHORT_PRESS , Production Test Mode "));

myGizwits.setBindMode(WIFI_PRODUCTION_TEST);

break;

case KEY1_LONG_PRESS:

// Serial.println(F("KEY1_LONG_PRESS ,Wifi Reset"));

myGizwits.setBindMode(WIFI_RESET_MODE);

break;

case KEY2_SHORT_PRESS:

// Serial.println(F("KEY2_SHORT_PRESS Soft AP mode"));

myGizwits.setBindMode(WIFI_SOFTAP_MODE);

//Soft AP mode

break;

case KEY2_LONG_PRESS:

// Serial.println(F("KEY2_LONG_PRESS ,AirLink mode"));

digitalWrite(ledPin, HIGH);   // sets the LED on

myGizwits.setBindMode(WIFI_AIRLINK_MODE);

//AirLink mode

break;

default:

break;

}

}
void setup() {

// put your setup code here, to run once:
Serial.begin(9600);
pinMode(ledPin, OUTPUT);      // sets the digital pin as output

pinMode(myledPin, OUTPUT);      // sets the digital pin as output
pinMode(KEY1, INPUT_PULLUP);

pinMode(KEY2, INPUT_PULLUP);
myGizwits.begin();

}

void wifiStatusHandle()

{

//  if(myGizwits.wifiHasBeenSet(WIFI_SOFTAP))

//    Serial.println(F("WIFI_SOFTAP!"));

//

//  if(myGizwits.wifiHasBeenSet(WIFI_AIRLINK))

//    Serial.println(F("WIFI_AIRLINK!"));

//

//  if(myGizwits.wifiHasBeenSet(WIFI_STATION))

//    Serial.println(F("WIFI_STATION!"));

//

if(myGizwits.wifiHasBeenSet(WIFI_CON_ROUTER))

digitalWrite(ledPin, LOW);    // sets the LED off

//    Serial.println(F("WIFI_CON_ROUTER!"));

//

//  if(myGizwits.wifiHasBeenSet(WIFI_DISCON_ROUTER))

//    Serial.println(F("WIFI_DISCON_ROUTER!"));

//

//  if(myGizwits.wifiHasBeenSet(WIFI_CON_M2M))

//    Serial.println(F("WIFI_CON_M2M!"));

//

//  if(myGizwits.wifiHasBeenSet(WIFI_DISCON_M2M))

//    Serial.println(F("WIFI_DISCON_M2M!"));

}

void loop() {
//Configure network

//if(XXX) //Trigger Condition

//myGizwits.setBindMode(0x02);  //0x01:Enter AP Mode;0x02:Enter Airlink Mode

/*

unsigned long varW_ADCValue = 0;//Add Sensor Data Collection

myGizwits.write(VALUE_ADCVALUE, varW_ADCValue);
bool varR_LED_OnOff = 0;

if(myGizwits.hasBeenSet(EVENT_LED_ONOFF))

{

myGizwits.read(EVENT_LED_ONOFF,&varR_LED_OnOff);//Address for storing data

}
//binary datapoint handle

*/

sensorValue = analogRead(A0);
unsigned long varW_ADCValue = sensorValue;//Add Sensor Data Collection

myGizwits.write(VALUE_ADCVALUE, varW_ADCValue);
if(myGizwits.hasBeenSet(EVENT_led_onoff))

{

myGizwits.read(EVENT_led_onoff,&varR_LED_OnOff);//Address for storing data

}

if(varR_LED_OnOff==1)

{

digitalWrite(myledPin, HIGH);   // sets the user LED on

}

else

{

digitalWrite(myledPin, LOW);    // sets the user LED off

}
KEY_Handle();//key handle , network configure

wifiStatusHandle();//WIFI Status Handle
myGizwits.process();

}

最后

至此，你的ESP8266模组就成功连接上机智云服务平台了，无论你在任何地方，无论用WiFi和4G都能通过APP来控制LED等的亮灭了，机智云还提供了APP的开源框架，我们可以在此基础上高度自由地定制我们自己的APP接入机智云物联网平台。