Created
September 22, 2020 18:41
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measure temp and upload
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#include <Wire.h> | |
#include <ESP8266WiFi.h> | |
#include <WiFiClient.h> | |
#include <ESP8266WebServer.h> | |
#include <ESP8266mDNS.h> | |
#include <limits> | |
#include <ArduinoJson.h> | |
#include <ESP8266HTTPClient.h> | |
#include <SPI.h> | |
#include <Adafruit_BME280.h> | |
#ifndef STASSID | |
#define STASSID “xxx” | |
#define STAPSK “xx”x | |
#endif | |
const char* ssid = STASSID; | |
const char* password = STAPSK; | |
ESP8266WebServer server(80); | |
int D0 = 16; | |
int D1 = 5; | |
int D2 = 4; | |
int D3 = 0; | |
int D4 = 2; | |
int D5 = 14; | |
int D6 = 12; | |
int D7 = 13; | |
int D8 = 15; | |
int RX = 3; | |
Adafruit_BME280 *bme; | |
static float lastTemperature = std::numeric_limits<float>::infinity(); | |
void setup() { | |
Serial.begin(9600); | |
Wire.begin(D2, D1); | |
bme = new Adafruit_BME280(); | |
bool status = bme->begin(0x76, &Wire); | |
WiFi.mode(WIFI_STA); | |
WiFi.begin(ssid, password); | |
if (status == false) { | |
Serial.print("SensorID was: 0x"); | |
Serial.println(bme->sensorID(), 16); | |
while (1) { | |
yield(); | |
} | |
} | |
// Wait for connection | |
while (WiFi.status() != WL_CONNECTED) { | |
Serial.print("."); | |
delay(400); | |
} | |
String status1 = String("IP:" + WiFi.localIP().toString() + " "); | |
Serial.println(status1); | |
if (MDNS.begin("esp8266_temp")) { | |
Serial.println("connected "); | |
} else { | |
Serial.println("MDNS failed "); | |
delay(2000); | |
} | |
server.on("/", handleRoot); | |
server.begin(); | |
} | |
void handleRoot() { | |
String tempString = String(lastTemperature, 3); | |
String d = String("It's " + tempString + " C here!"); | |
if (lastTemperature == std::numeric_limits<float>::infinity()) { | |
d = String("no measurements done yet"); | |
} | |
// digitalWrite(led, 1); | |
server.send(200, "text/plain", d); | |
// digitalWrite(led, 0); | |
} | |
// the loop function runs over and over again forever | |
void loop() { | |
// ESP.deepSleep(200e6); // 20e6 is 20 microseconds | |
delay(15000); // Pause for 15 seconds | |
float temp = bme->readTemperature(); | |
if (isnan(temp) == false) { | |
lastTemperature = temp; | |
String tempString = String(temp, 2); | |
String d = String(tempString + " 'C "); | |
Serial.println(d); | |
// send HTTP request | |
String requestURL = urlWithLastTemperature(temp); | |
HTTPClient http; | |
// Your Domain name with URL path or IP address with path | |
http.begin(requestURL.c_str()); | |
// Send HTTP GET request | |
int httpResponseCode = http.GET(); | |
if (httpResponseCode != 200) { | |
Serial.println("response code: "+httpResponseCode); | |
} | |
} else { | |
Serial.println("temp fail! "); | |
} | |
server.handleClient(); | |
MDNS.update(); | |
} | |
String urlWithLastTemperature(float lastTemp) { | |
String url = String("http://foobar/insert_temp.php?temp=" + String(lastTemp, 2)); | |
return url; | |
} | |
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