Skip to content

Instantly share code, notes, and snippets.

Show Gist options
  • Save almcarvalho/766e5a8ae2ea89836874ece6ba738da2 to your computer and use it in GitHub Desktop.
Save almcarvalho/766e5a8ae2ea89836874ece6ba738da2 to your computer and use it in GitHub Desktop.
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
#include <WiFiClient.h>
#include <Arduino_JSON.h>
const char* ssid = "REPLACE_WITH_YOUR_SSID";
const char* password = "REPLACE_WITH_YOUR_PASSWORD";
//Your Domain name with URL path or IP address with path
const char* serverName = ""https://fit2sell.herokuapp.com/rafael"";
// the following variables are unsigned longs because the time, measured in
// milliseconds, will quickly become a bigger number than can be stored in an int.
unsigned long lastTime = 0;
// Timer set to 10 minutes (600000)
//unsigned long timerDelay = 600000;
// Set timer to 5 seconds (5000)
unsigned long timerDelay = 5000;
String sensorReadings;
float sensorReadingsArr[3];
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
Serial.println("Connecting");
while(WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to WiFi network with IP Address: ");
Serial.println(WiFi.localIP());
Serial.println("Timer set to 5 seconds (timerDelay variable), it will take 5 seconds before publishing the first reading.");
}
void loop() {
// Send an HTTP POST request depending on timerDelay
if ((millis() - lastTime) > timerDelay) {
//Check WiFi connection status
if(WiFi.status()== WL_CONNECTED){
sensorReadings = httpGETRequest(serverName);
Serial.println(sensorReadings);
JSONVar myObject = JSON.parse(sensorReadings);
// JSON.typeof(jsonVar) can be used to get the type of the var
if (JSON.typeof(myObject) == "undefined") {
Serial.println("Parsing input failed!");
return;
}
Serial.print("JSON object = ");
Serial.println(myObject);
// myObject.keys() can be used to get an array of all the keys in the object
JSONVar keys = myObject.keys();
for (int i = 0; i < keys.length(); i++) {
JSONVar value = myObject[keys[i]];
Serial.print(keys[i]);
Serial.print(" = ");
Serial.println(value);
sensorReadingsArr[i] = double(value);
}
Serial.print("1 = ");
Serial.println(sensorReadingsArr[0]);
Serial.print("2 = ");
Serial.println(sensorReadingsArr[1]);
Serial.print("3 = ");
Serial.println(sensorReadingsArr[2]);
}
else {
Serial.println("WiFi Disconnected");
}
lastTime = millis();
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment