Tinkers Projects

Code for Project

#include <ESP8266WiFi.h>          //https://github.com/esp8266/Arduino

//needed for library
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>         //https://github.com/tzapu/WiFiManager
#include <ESP8266HTTPClient.h>

#define NumberOfItems 600
#define timeBetweenLog 600 //10 mins or 600 secs
#define avg false //avg on and sleeping off

String date = "";
unsigned long startingTime;
int count = -2;
struct log {unsigned long time;int value;} logItems[NumberOfItems];


unsigned long AvgCount = 0;
unsigned long Avgsum = 0;

String MonitorId="defult";

void setup() 
{
    Serial.begin(115200);
    //ADC_MODE(ADC_VCC);

    Serial.println("started");
    WiFiManager wifiManager;
    WiFiManagerParameter custom_MonitorId("MonitorNameId", "Monitors Name ID", "defult", 40);
    wifiManager.addParameter(&custom_MonitorId);
    wifiManager.autoConnect("Voltage Logger");
    MonitorId = String(custom_MonitorId.getValue());

    Serial.println("connected...yeey :)");
    date = getDate();

    startingTime = millis()/1000;
}

void loop() 
{
    getdata();

    if(count>-1)
        postData();
    //else if(!avg && timeBetweenLog + startingTime - millis() > 10000)
        //ESP.deepSleep((timeBetweenLog + startingTime - millis()-10000) * 1000);
}

void getdata() 
{
    if(avg)
    {
        AvgCount++;
        Avgsum -= Avgsum / AvgCount;
        Avgsum += analogRead(A0) / AvgCount;
    }

    if(count == -2 || timeBetweenLog + startingTime < millis()/1000)
    {
        count++;
        if(count >= NumberOfItems)
        {
            for(int i = 1; i < NumberOfItems; i++)
            {
                logItems[i-1].time = logItems[i].time;
                logItems[i-1].value = logItems[i].value;
            }
            count--;
        }
        if(count<0)count = 0;
        logItems[count].time = millis()/1000;
        if(avg)
        {
            logItems[count].value = AvgCount;
        }
        else
        {
            logItems[count].value = analogRead(A0);
        }

        startingTime = millis()/1000;
    }
}
 

void postData() 
{
    String theDate="";
    String time = String(logItems[count].time);
    String value = String(logItems[count].value);

    HTTPClient http;
    http.begin("batterymonitor.php?monitorid=" + MonitorId + "&date=" + date + "&time=" + time + "&value=" + value);
    int httpCode = http.GET();
    if(httpCode > 0) 
    {
        Serial.printf("[HTTP] GET... code: %d\n", httpCode);
        if(httpCode == HTTP_CODE_OK) 
        {
            count--;
        }
    } 
    else 
    {
        Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();
}



String getDate() 
{
    String theDate="";
    HTTPClient http;
    http.begin("batterymonitor.php?gettime=1"); //HTTP
    int httpCode = http.GET();
    if(httpCode > 0) 
    {
        Serial.printf("[HTTP] GET... code: %d\n", httpCode);
        
        if(httpCode == HTTP_CODE_OK) 
        {
            theDate = http.getString();
            Serial.println(theDate);
        }
    } 
    else 
    {
        Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }

    http.end();

    if(theDate != "") return theDate;
    delay(60000);
    return getDate();
}