Created
September 30, 2019 14:19
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#include <DHT.h> | |
#include <ESP8266HTTPClient.h> | |
#include <ESP8266WiFi.h> | |
#define WIFI_NAME "%wifi%" | |
#define WIFI_PASSWORD "%password%" | |
#define SERVER_ENDPOINT "http://site/api/dot" | |
#define DELAY_SECONDS 30 | |
#define DHTPIN 5 | |
#define DHTTYPE DHT22 | |
DHT dht(DHTPIN, DHTTYPE); | |
void setup() { | |
Serial.begin(115200); | |
WiFi.begin(WIFI_NAME, WIFI_PASSWORD); | |
while (WiFi.status() != WL_CONNECTED) { | |
Serial.println("Connecting to Wi-Fi..."); | |
delay(500); | |
} | |
Serial.println("WiFi connected"); | |
Serial.print("IP address: "); | |
Serial.println(WiFi.localIP()); | |
Serial.print("Mac address: "); | |
Serial.println(WiFi.macAddress()); | |
dht.begin(); | |
} | |
void loop() { | |
delay(DELAY_SECONDS * 1000); | |
if (WiFi.status()== WL_CONNECTED) { | |
float t = dht.readTemperature(); | |
float h = dht.readHumidity(); | |
if (isnan(t) || isnan(h)) { | |
Serial.println("Error. Can't get temperature/humidity."); | |
return; | |
} | |
char body[200]; | |
char mac[100]; | |
String stringMac = WiFi.macAddress(); | |
stringMac.toCharArray(mac, 100); | |
sprintf(body, "{\"t\": %.2f, \"h\": %.2f, \"mac\": \"%s\"}", t, h, mac); | |
Serial.println(body); | |
HTTPClient http; | |
http.begin(SERVER_ENDPOINT); | |
http.addHeader("Content-Type", "text/plain"); | |
int httpCode = http.POST(body); | |
String payload = http.getString(); | |
Serial.println(httpCode); | |
Serial.println(payload); | |
http.end(); | |
} else { | |
Serial.println("Error in WiFi connection"); | |
} | |
} |
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