#include<string.h>
//#include <SoftwareSerial.h>
#include <Wire.h>
#include <math.h>
//#include <MsTimer2.h>
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 4, 5, 6, 7);
//* LCD RS pin to digital pin 12
// * LCD Enable pin to digital pin 11
// * LCD D4 pin to digital pin 4
// * LCD D5 pin to digital pin 5
// * LCD D6 pin to digital pin 6
// * LCD D7 pin to digital pin 7
// * LCD R/W pin to ground
// * 10K resistor:
// * ends to +5V and ground
// * wiper to LCD VO pin (pin 3)
//SoftwareSerial mySerial(9, 10); // RX, TX
//String inputString = "";
const int buttonPin = 10; //the number of the jiangyu input pin
int buttonState = 0; // variable for reading the jiangyu status
int Rain = 1;
int BH1750address = 0x23;//BH1750 I2C地址
byte buff[2];
float BH = 0;
const int analogInPin = A0; // Analog input pin that the potentiometer is attached to//*//Freqinput pin D2
int pin = 8;//DSM501A input D8
float wuchaxiuzheng = 0;
unsigned long duration;
unsigned long starttime;
unsigned long endtime;
unsigned long sampletime_ms = 30000;
unsigned long lowpulseoccupancy = 0;
float ratio = 0;
float concentration = 0;
float tempconcentration=0;
int sensorValue = 0; // value read from the NTC
int TEMPRATURE=0;
int i=0;
float R_Data=0;
float U_data [111]={4.67,4.65,4.64,4.62,4.60,4.57,4.55,4.53,4.51,4.48,4.46,4.43,4.40,4.38,4.35,4.32,4.28,4.25,4.22,4.19,4.15,4.11,4.08,4.04,4.00,3.96,3.92,3.88,3.83,3.79,3.75,3.70,3.65,3.61,3.56,3.51,3.47,3.42,3.37,3.32,3.27,3.22,3.17,3.11,3.06,3.01,2.96,2.91,2.86,2.81,2.75,2.70,2.65,2.60,2.54,2.50,2.44,2.39,2.34,2.29,2.24,2.20,2.15,2.10,2.06,2.01,1.96,1.92,1.87,1.83,1.78,1.74,1.70,1.66,1.62,1.58,1.54,1.50,1.47,1.43,1.39,1.36,1.32,1.29,1.25,1.22,1.19,1.15,1.12,1.09,1.06,1.04,1.01,0.98,0.96,0.93,0.91,0.88,0.86,0.84,0.81,0.79,0.77,0.75,0.73,0.713,0.69,0.67,0.66,0.64,0.62};//温度对应NTC电表格
int divider[6] = {0, 1, 8, 64, 256, 1024};//read RH use interrupt get F
int prescaler = 5;
double count = 0;
double middle = 0;
char x = 0;
int Fout=0;
int RH=0;
byte du[8]={
B00111,
B00101,
B00111,
B00000,
B00000,
B00000,
B00000,
};//define 1602 char
ISR(TIMER1_OVF_vect)
{
if (prescaler < 4)
{
prescaler++;
}
}
void interrupt()
{
if (!x)
{
count = TCNT1;
TCNT1 = 0x000;
TCCR1B = prescaler;
attachInterrupt(0, interrupt, FALLING);
}
else
{
middle = TCNT1;
attachInterrupt(0, interrupt, RISING);
}
x = ~x;
}
void setup()
{
Wire.begin();
Serial.begin(9600);
// mySerial.begin(9600);
// inputString.reserve(200);
// MsTimer2::set(2000, timer); //定时器设置,每2秒触发一次timer函数操作
// MsTimer2::start();
// pinMode(buttonPin, INPUT);
analogReference(DEFAULT);//INTERNAL
lcd.createChar(1,du);
lcd.begin(16, 2);
lcd.clear();
// lcd.setCursor(0, 0);
// lcd.print("PM2.5=");
// lcd.setCursor(0, 1);
// lcd.print("T= ");
// //lcd.write(1);
// lcd.print(" RH= %");
// Serial.begin(9600);
pinMode(buttonPin, INPUT);
pinMode(8,INPUT);
TIMSK1 = 0x01;
TCCR1A = 0x00;
attachInterrupt(0, interrupt, RISING);
starttime = millis();
}
void loop()
{
duration = pulseIn(pin, LOW);
lowpulseoccupancy += duration;
endtime = millis();
if ((endtime-starttime) > sampletime_ms)
{
ratio = (lowpulseoccupancy-endtime+starttime + sampletime_ms)/(sampletime_ms*10.0); // Integer percentage 0=>100
concentration = 1.1*pow(ratio,3)-3.8*pow(ratio,2)+520*ratio+0.62; // using spec sheet curve
//Serial.print(lowpulseoccupancy);
// Serial.print(",");
//Serial.print(ratio);
// Serial.print("DSM501A:");
// Serial.println(concentration);
// Serial.print(";");
//Serial.println(endtime-starttime);
wuchaxiuzheng = (endtime-starttime-30000)/30000.0;
//Serial.println(wuchaxiuzheng);
concentration = (1.00-wuchaxiuzheng)*concentration;
//Serial.println(concentration);
lcd.setCursor(6, 0);
lcd.print(concentration);
lcd.print("pcs/0.01cf");
// lowpulseoccupancy = 0;
// starttime = millis();
}
sensorValue = analogRead(analogInPin); // read the analog in value:
delay(10);
R_Data=sensorValue*5/1024.0;
//Serial.print("R_Data = " );
//Serial.print(R_Data);
for(i=0;i<111;i++){
if(R_Data>4.67)
{
TEMPRATURE =-30;//对应-30℃
}
else if(R_Data<0.62)
{
TEMPRATURE=80; //对应80℃
}
else if(R_Data<U_data[i]&&R_Data>U_data[i+1])
{
TEMPRATURE=int(i-30-3);
}
}
// Serial.print("T:" );
// Serial.print(TEMPRATURE);
// Serial.print(";" );
delay(10);
lcd.setCursor(0, 0);
lcd.print("PM2.5=");
lcd.setCursor(0, 1);
lcd.print("T= ");
//lcd.write(1);
lcd.print(" RH= %");
// lcd.setCursor(0, 1);
// lcd.print("T= ");
// //lcd.write(1);
// lcd.print(" RH= %");
lcd.setCursor(2, 1);
lcd.print(TEMPRATURE);
lcd.write(1);
lcd.print("C");
Fout=(16000000.0 / divider[prescaler] / count);
//Serial.print("Vsensor=" );
//Serial.print(sensorValue);
//Serial.print(", " );
//Serial.print("Freq=");
//Serial.print(Fout);
// Serial.print(" ");
// Serial.print(int(divider));
// Serial.print(" ");
// Serial.print(prescaler);
// Serial.print(" ");
// Serial.println(count);
if (Fout<8115)
{
RH=100;
// Serial.print("RH:100");
// Serial.println(";");
lcd.setCursor(13, 1);
lcd.print("H.");
}
else if(Fout>9595)
{
RH=0;
// Serial.print("RH:0");
// Serial.println(";");
lcd.setCursor(13, 1);
lcd.print("L.");
}
else
{
RH=(9595-Fout)/14.8;
// Serial.print("RH:");
// Serial.print(RH);
// Serial.println(";");
lcd.setCursor(13, 1);
lcd.print(RH);
}
if (prescaler > 1)
{
prescaler--;
delay(200);
}
//if( flag )//
// {
// Serial.print( BH1750() );
// Serial.println("[lux]");
//
// flag = 0;//归零，等着定时中断重新赋值
// }
delay(2000);
if(tempconcentration!=concentration)
{
tempconcentration=concentration;
BH=BH1750();
// read the state of the jiangyu value:
buttonState = digitalRead(buttonPin);
// check if the jiangyu is low.
// if it is, the buttonState is LOW:
if (buttonState == LOW) {
Rain=0;
}
else {
Rain=1;
}
//lewei ouput by computer tools
// Serial.print("D:");
// Serial.print(concentration);
// Serial.print(";");
// Serial.print("T:" );
// Serial.print(TEMPRATURE);
// Serial.print(";" );
// Serial.print("R:");
// Serial.print(RH);
// Serial.print(";" );
// Serial.print("B:" );
// Serial.print(BH);
// Serial.print(";" );
// Serial.print("W:");
// Serial.print(Rain);
// Serial.println(";");
//lewei ouput by GPRS
lcd.setCursor(0, 1);
lcd.print(" ");
lcd.setCursor(0, 1);
lcd.print(BH);
lcd.print("LUX");
//delay(5000);
String tempstring="@uploading(01,D,";
String tempstring1=")";
Serial.print(tempstring);
Serial.print(int(concentration));
Serial.println(tempstring1);
// delay(12000); min transtime
delay(30000);
String tempstring2="@uploading(01,T,";
String tempstring3=")";
Serial.print(tempstring2);
Serial.print(TEMPRATURE);
Serial.println(tempstring3);
// delay(12000);
delay(30000);
String tempstring4="@uploading(01,R,";
String tempstring5=")";
Serial.print(tempstring4);
Serial.print(RH);
Serial.println(tempstring5);
// delay(15000);
delay(30000);
String tempstring6="@uploading(01,B,";
String tempstring7=")";
Serial.print(tempstring6);
Serial.print(int(BH));
Serial.println(tempstring7);
// delay(2000);
delay(30000);
String tempstring8="@uploading(01,W,";
String tempstring9=")";
Serial.print(tempstring8);
Serial.print(Rain);
Serial.println(tempstring9);
delay(30000);
lowpulseoccupancy = 0;
starttime = millis();
}
}
double BH1750() //BH1750设备操作
{
int i=0;
double val=0;
//开始I2C读写操作
Wire.beginTransmission(BH1750address);
Wire.write(0x10);//1lx reolution 120ms//发送命令
Wire.endTransmission();
delay(200);
//读取数据
Wire.beginTransmission(BH1750address);
Wire.requestFrom(BH1750address, 2);
while(Wire.available()) //
{
buff[i] = Wire.read(); // receive one byte
i++;
}
Wire.endTransmission();
if(2==i)
{
val=((buff[0]<<8)|buff[1])/1.2;
}
if(val<0) val=56134+val;
return val;
}
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