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网络温度计

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一：所需材料
Ethernet W5100扩展板
LM 35温度传感器
导线若干
Yeelink帐号(http://www.yeelink.net/)

二：模拟连接图

代码:

三：代码

#include <SPI.h>
#include <Ethernet.h>
#include <Wire.h>
#include <math.h>


byte buff[2];


#define APIKEY         "去我的个人中心获取API" // replace your yeelink api key here
#define DEVICEID       设备号 // replace your device ID
#define SENSORID       传感器号 // replace your sensor ID



byte mac[] = { 0x00, 0x1D, 0x72, 0x82, 0x35, 0x9D};
EthernetClient client;
char server[] = "api.yeelink.net"; 


unsigned long lastConnectionTime = 0;       
boolean lastConnected = false;               
const unsigned long postingInterval = 30*1000;


void setup() {
  Wire.begin();  Serial.begin(57600);  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    for(;;)
      ;
  }
  else {
    Serial.println("Ethernet configuration OK");
  }
}


void loop() {


  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }




  if (!client.connected() && lastConnected) {
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
  }



  if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {
    int sensorReading = readLightSensor();    
   sendData(sensorReading);
  }

  lastConnected = client.connected();
}
void sendData(int thisData) {

  if (client.connect(server, 80)) {
    Serial.println("connecting...");
  
    client.print("POST /v1.0/device/");
    client.print(DEVICEID);
    client.print("/sensor/");
    client.print(SENSORID);
    client.print("/datapoints");
    client.println(" HTTP/1.1");
    client.println("Host: api.yeelink.net");
    client.print("Accept: *");
    client.print("/");
    client.println("*");
    client.print("U-ApiKey: ");
    client.println(APIKEY);
    client.print("Content-Length: ");


    // calculate the length of the sensor reading in bytes:
  
    int thisLength = 10 + getLength(thisData);
    client.println(thisLength);


    client.println("Content-Type: application/x-www-form-urlencoded");
    client.println("Connection: close");
    client.println();


  
    client.print("{"value":");
    client.print(thisData);
    client.println("}");
  }
  else {
  
    Serial.println("connection failed");
    Serial.println();
    Serial.println("disconnecting.");
    client.stop();
  }


  lastConnectionTime = millis();
}




int getLength(int someValue) {


  int digits = 1;

  int dividend = someValue /10;
  while (dividend > 0) {
    dividend = dividend /10;
    digits++;
  }  return digits;
}


///////////////////////////////////////////////////////////////////////////


int readLightSensor()
{
  int val=analogRead(0); 
  int data=(125*val)>>8;


  Serial.print("Sensor value is: ");
  Serial.println((int)data);


  return data;
}
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hnyzcj 版主

发表于 2015-4-10 18:41:39

不错，开始玩YEELINK，这个挺好玩的。

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大连林海 初级技神
楼主|

发表于 2015-4-10 18:44:17

hnyzcj 发表于 2015-4-10 18:41
不错，开始玩YEELINK，这个挺好玩的。

学习学习自己也好好做一个

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以下是我用DHT11采集数据上传到yeelink的程序，虽然能够上传数据，但是采样频率实在太低。测了几个小时才采到四五个样本点，不知道这是什么原因，这么慢。看了串口发现当采完湿度、温度之后http响应会返回406错误，这个也搞不明白。各位前辈，帮帮忙，看看是什么原因。程序跟代码都附在下面了。
// include the library code:
#include <LiquidCrystal.h>
#include <SPI.h>
#include <Ethernet.h>
#include <dht11.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(9, 8, A0, A1, A2, A3);
dht11 DHT11;
#define DHT11PIN 3 //DHT11 PIN 3 连接UNO 3
#define LIGHTPIN 0 //light sensor > analog pin 0

#define APIKEY       "c142a1e19dec73dd5dde48309ad20590" // replace your yeelink api key here
#define DEVICEID             19112 // replace your device ID
#define TEMPERATURE_SENSORID 33275 // temperature
#define HUMIDITY_SENSORID    33276 //humidity
#define LIGHT_SENSORID       33270 //light

// assign a MAC address for the ethernet controller.
byte mac[] = { 0x00, 0x1D, 0x72, 0x82, 0x35, 0x9D};
// initialize the library instance:
EthernetClient client;
char server[] = "api.yeelink.net"; // name address for yeelink API

unsigned long lastConnectionTime = 0;       // last time you connected to the server, in milliseconds
boolean lastConnected = false;                // state of the connection last time through the main loop
const unsigned long postingInterval = 30*1000; // delay between 2 datapoints, 30s

int sensor = 0; //which sesor to read
               //0 temperature
               //1 humidity
               //2 light

void setup()
{
  Serial.begin(115200);
  // set up the LCD's number of columns and rows:
  lcd.begin(16,2);
  pinMode(LIGHTPIN,OUTPUT);

  if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
for(;;)
   ;
  }
  else {
Serial.println("Ethernet configuration OK");
  }

  Serial.println("DHT11 TEST PROGRAM ");
  Serial.print("LIBRARY VERSION: ");
  Serial.println(DHT11LIB_VERSION);
  Serial.println();
}

void loop()
{

// set the cursor to (0,0):
lcd.setCursor(0, 0);
// print
lcd.print("Hum (%):");
delay(500);
// set the cursor to (0,0):
lcd.setCursor(9, 0);
// print
lcd.print(DHT11.humidity);
delay(500);
   // set the cursor to (0,0):
lcd.setCursor(0, 1);
// print
lcd.print("Tem (C):");
delay(500);
// set the cursor to (0,0):
lcd.setCursor(9, 1);
// print
lcd.print(DHT11.temperature);
delay(500);
  // if there's incoming data from the net connection.
  // send it out the serial port.  This is for debugging
  // purposes only:
  if (client.available()) {
char c = client.read();
//Serial.print("NET:");
Serial.print(c);
  }

  // if there's no net connection, but there was one last time
  // through the loop, then stop the client:
  if (!client.connected() && lastConnected) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
  }

  // if you're not connected, and ten seconds have passed since
  // your last connection, then connect again and send data:
  if(!client.connected() && (millis() - lastConnectionTime > postingInterval)) {
// read sensor data, replace with your code
//int sensorReading = readLightSensor();
//int tempC = analogRead(0)*500/1024;
//send data to server

   switch(sensor){
      case 0:
      sendData(readSensor(HUMIDITY_SENSORID), HUMIDITY_SENSORID);
      break;
      case 1:
      sendData(readSensor(TEMPERATURE_SENSORID), TEMPERATURE_SENSORID);
      break;
      case 2:
      sendData(readSensor(LIGHT_SENSORID), LIGHT_SENSORID);
      break;
   }

   if(++sensor > 2) sensor = 0;

  }
  // store the state of the connection for next time through
  // the loop:
  //

  lastConnected = client.connected();
}

int readSensor(long sensor_id){
  Serial.println("\n");

  if (sensor_id == LIGHT_SENSORID)
  {
int v = analogRead(LIGHTPIN);
Serial.print("light:");
Serial.println(v);
return v;
  }

  int chk = DHT11.read(DHT11PIN);

  Serial.print("Read sensor: ");
  switch (chk)
  {
case DHTLIB_OK:
            Serial.println("OK");
            break;
case DHTLIB_ERROR_CHECKSUM:
            Serial.println("Checksum error");
            break;
case DHTLIB_ERROR_TIMEOUT:
            Serial.println("Time out error");
            break;
default:
            Serial.println("Unknown error");
            break;
  }

  if(sensor_id == HUMIDITY_SENSORID){
Serial.print("Hum (%): ");
Serial.println(DHT11.humidity);

return DHT11.humidity;
  }else{
Serial.print("Tem (C): ");
Serial.println(DHT11.temperature);

return DHT11.temperature;
  }
}

void sendData(int thisData, long sensor_id) {
  // if there's a successful connection:
  if (client.connect(server, 80)) {
Serial.println("connecting...");
// send the HTTP PUT request:
client.print("POST /v1.0/device/");
client.print(DEVICEID);
client.print("/sensor/");
client.print(sensor_id);
client.print("/datapoints");
client.println(" HTTP/1.0");
client.println("Host: api.yeelink.net");
client.print("Accept: *");
client.print("/");
client.println("*");
client.print("U-ApiKey: ");
client.println(APIKEY);
client.print("Content-Length: ");

// calculate the length of the sensor reading in bytes:
// 8 bytes for {"value":} + number of digits of the data:
int thisLength = 10 + getLength(thisData);
client.println(thisLength);

client.println("Content-Type: application/x-www-form-urlencoded");
client.println("Connection: close");
client.println();

// here's the actual content of the PUT request:
client.print("{\"value\":");
client.print(thisData);
client.println("}");
  }
  else {
// if you couldn't make a connection:
//

Serial.println("connection failed");
Serial.println();
Serial.println("disconnecting.");
client.stop();
  }
// note the time that the connection was made or attempted:
  lastConnectionTime = millis();
}

// This method calculates the number of digits in the
// sensor reading.  Since each digit of the ASCII decimal
// representation is a byte, the number of digits equals
// the number of bytes:
int getLength(int someValue) {
  // there's at least one byte:
  int digits = 1;
  // continually divide the value by ten,
  // adding one to the digit count for each
  // time you divide, until you're at 0:
  int dividend = someValue /10;
  while (dividend > 0) {
dividend = dividend /10;
digits++;
  }
  // return the number of digits:
  return digits;
}
Ethernet configuration OK
DHT11 TEST PROGRAM
LIBRARY VERSION: 0.4.1

Read sensor: OK
Hum (%): 45
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 11:16:41 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=npjm2qkejj2bv82ev20hbqggt1; expires=Sat, 18-Apr-2015 19:16:41 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

Read sensor: OK
Tem (C): 19
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 11:27:38 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=9av3p5l6km31blscqrqol7hfp6; expires=Sat, 18-Apr-2015 19:27:38 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

light:1023
connecting...
HTTP/1.1 406 Not Acceptable
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 11:38:33 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=022ndq55jch4rptgo6kjhi0ia1; expires=Sat, 18-Apr-2015 19:38:33 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

No access permission to this sensor.
disconnecting.

Read sensor: OK
Hum (%): 42
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 11:51:07 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=6d77s4pqmdf88cv8r7lae7cqi6; expires=Sat, 18-Apr-2015 19:51:06 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

Read sensor: OK
Tem (C): 22
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 12:02:10 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=tku6c7ddjotciijur8l8ije951; expires=Sat, 18-Apr-2015 20:02:09 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

light:0
connecting...
HTTP/1.1 406 Not Acceptable
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 12:13:07 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=qspcmg389888pq2kr5286m4756; expires=Sat, 18-Apr-2015 20:13:07 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

No access permission to this sensor.
disconnecting.

Read sensor: OK
Hum (%): 42
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 12:25:39 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=nita95opda3e6i8ff7rob1t770; expires=Sat, 18-Apr-2015 20:25:39 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

Read sensor: OK
Tem (C): 19
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 12:36:35 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=jleftkaohg6fivjgam8cqm2ak5; expires=Sat, 18-Apr-2015 20:36:35 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

light:1023
connecting...
HTTP/1.1 406 Not Acceptable
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 12:47:32 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=jah15v7d3fib81qnhrvor3rc43; expires=Sat, 18-Apr-2015 20:47:32 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

No access permission to this sensor.
disconnecting.

Read sensor: OK
Hum (%): 46
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 13:00:06 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=c9ask5rf3c09i6rgubvnklsq53; expires=Sat, 18-Apr-2015 21:00:06 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

Read sensor: OK
Tem (C): 18
connecting...
HTTP/1.1 200 OK
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 13:11:03 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=8eo7dnkuh6p99hf806lgnf3nr6; expires=Sat, 18-Apr-2015 21:11:03 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

disconnecting.

light:0
connecting...
HTTP/1.1 406 Not Acceptable
Server: nginx/1.1.19
Date: Fri, 10 Apr 2015 13:21:58 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.3.10-1ubuntu3.6
Set-Cookie: CAKEPHP=bqie561m2v7mtkt4si78ncr7b5; expires=Sat, 18-Apr-2015 21:21:58 GMT; path=/
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"

No access permission to this sensor.
disconnecting.

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