这里用到的硬件较多，也可以只上传部分传感器的数据
1.arduino nano (mega2560, uno 都可以)；
2.ds18b20;
3.dht11;
4.bmp180;
5.bh1750;
6.esp8266 (esp8266对供电要求较高，需要注意);
(3~5为可选模块)
arduino 通过 ESP8266 上传传感器数据到 BPI，ESP8266需要提前设置好wifi用户名和密码，使其开机可以自动登录
pm2.5 和 co2 的上传功能可以参考前面的代码自行添加
// ESP8266
#include <ESP8266.h>
#ifdef ESP8266_USE_SOFTWARE_SERIAL
SoftwareSerial mySerial_8266(2, 3); // MEAG TX:10, RX:11
ESP8266 wifi(mySerial_8266, 9600);
#else
ESP8266 wifi(Serial1, 9600);
#endif
#define HOST_NAME "192.168.1.2" //bpi ip
#define HOST_PORT (80)
String MAC = "";
String IP = "";
#include "bmp180.h"
#include "dht11.h"
#include "bh1750.h"
#include <OneWire.h>
OneWire ds(5); // ds18b20 pin D5
bh1750 BH1750;
bmp180 BMP180;
dht11 dht11_0;
unsigned long t_loop;
boolean b_con = false;
#define DHT11PIN_0 4
int e_18b20 = 0;
float getTemp_ds18b20() {
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius, fahrenheit;
if ( !ds.search(addr)) {
ds.reset_search();
delay(250);
if (e_18b20 < 10) {
e_18b20++;
return getTemp_ds18b20();
}
}
if (OneWire::crc8(addr, 7) != addr[7]) {
if (e_18b20 < 10) {
e_18b20++;
return getTemp_ds18b20();
}
}
// the first ROM byte indicates which chip
switch (addr[0]) {
case 0x10:
type_s = 1;
break;
case 0x28:
type_s = 0;
break;
case 0x22:
type_s = 0;
break;
default:
if (e_18b20 < 10) {
e_18b20++;
return getTemp_ds18b20();
}
}
e_18b20 = 0;
ds.reset();
ds.select(addr);
ds.write(0x44, 1);
delay(100);
present = ds.reset();
ds.select(addr);
ds.write(0xBE);
for ( i = 0; i < 9; i++) {
data* = ds.read();
}
OneWire::crc8(data, 8);
int16_t raw = (data[1] << 8) | data[0];
if (type_s) {
raw = raw << 3;
if (data[7] == 0x10) {
raw = (raw & 0xFFF0) + 12 - data[6];
}
} else {
byte cfg = (data[4] & 0x60);
if (cfg == 0x00) raw = raw & ~7;
else if (cfg == 0x20) raw = raw & ~3;
else if (cfg == 0x40) raw = raw & ~1;
}
celsius = (float)raw / 16.0;
return celsius;
}
void setup() {
Serial.begin(9600);
BMP180.Calibration();
t_loop = millis();
}
void loop() {
float temperature = BMP180.GetTemperature();
float pressure = BMP180.GetPressure();
dht11_0.read(DHT11PIN_0);
float dht_h0 = (float)dht11_0.humidity;
float dht_t0 = (float)dht11_0.temperature;
float lx = BH1750.lx();
lx = abs(lx);
float t_ds18b20 = getTemp_ds18b20();
t_ds18b20 = long(t_ds18b20 * 10) / 10.0;
float t_s = ( millis() - t_loop) / 1000;
Serial.print("t0:");
Serial.print(t_ds18b20, 1);
Serial.print("; ");
Serial.print("h1:");
Serial.print(dht_h0, 0);
Serial.print("; ");
Serial.print("t1:");
Serial.print(dht_t0, 0);
Serial.print("; ");
Serial.print("t3:");
Serial.print(temperature, 1);
Serial.print("; ");
Serial.print("p:");
Serial.print(pressure, 0);
Serial.print("; ");
Serial.print("l:");
Serial.print( lx );
Serial.print("; ");
Serial.print("delay:");
Serial.print( t_s );
Serial.println();
if ( t_s > 120) {
#ifdef ESP8266_USE_SOFTWARE_SERIAL
mySerial_8266.listen();
#endif
b_con = wifi.createTCP(HOST_NAME, HOST_PORT);
Serial.print("con:");
Serial.print(B(b_con));
if (!b_con) {
wifi.restart();
Serial.println();
t_loop = millis();
return;
}
postData("ds18b20", t_ds18b20 );
postData("dht11_temp", dht_t0 );
postData("dht11_humidity", dht_h0 );
postData("bmp180_p", pressure );
postData("bmp180_temp", temperature );
postData("bh1750", lx );
postData("dht11_temp2", dht_t0 );
postData("dht11_humidity2", dht_h0 );
b_con = ! wifi.releaseTCP();
Serial.print("; close:");
Serial.println(B(!b_con));
t_loop = millis();
}
delay(5000);
}
String B(boolean b) {
if (b) return "true";
else return "false";
}
void postData(String key, float val) {
if (b_con) {
String s = "POST /weather/main.php?cmd=setdata&key="
+ key + "&val=" + String(val) + " HTTP/1.1\r\n"
+ "Host: " + String(HOST_NAME) + "\r\n"
+ "Content-Length: 0\r\n"
+ "\r\n"
+ "\r\n";
char c[s.length()];
s.toCharArray(c, s.length());
char *_p = c;
wifi.send((const uint8_t*)_p, strlen(_p));
delay(1000);
} else {
Serial.print("create tcp err\r\n");
}
}
weather_Water.ino weather_Water.rar (1.66 KB)
ESP8266库 ITEADLIB_Arduino_WeeESP8266-master.zip (419 KB)