thingspeak command slows down my Nodemcu execution

#include <ESP8266WiFi.h>

#include <Arduino.h>

#include <U8g2lib.h>

#ifdef U8X8_HAVE_HW_I2C

#include <Wire.h>

#endif

#include "secrets.h"

#include "ThingSpeak.h" // always include thingspeak header file after other header files and custom macros

U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0, /* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ U8X8_PIN_NONE);

char ssid[] = SECRET_SSID; // your network SSID (name)

char pass[] = SECRET_PASS; // your network password

int keyIndex = 0; // your network key Index number (needed only for WEP)

WiFiClient client;

unsigned long myChannelNumber = SECRET_CH_ID;

const char * myWriteAPIKey = SECRET_WRITE_APIKEY;

const int buttonPin = D5;

int buttonState = 0; // variable for reading the pushbutton status

long count =0;

void setup() {

pinMode(buttonPin, INPUT);

pinMode(ResetPin,INPUT);

Serial.begin(115200); // Initialize serial

u8g2.begin();

delay(1000);

u8g2.setFont(u8g2_font_ncenB08_tr);

u8g2.drawStr(60,60,"Connecting");

u8g2.sendBuffer();

Serial.begin(115200);

WiFi.mode(WIFI_STA);

ThingSpeak.begin(client); // Initialize ThingSpeak

if(WiFi.status() != WL_CONNECTED){

Serial.print("Attempting to connect to SSID: ");

Serial.println(SECRET_SSID);

while(WiFi.status() != WL_CONNECTED){

WiFi.begin(ssid, pass); // Connect to WPA/WPA2 network. Change this line if using open or WEP network

Serial.print(".");

delay(5000);

}

Serial.println("\nConnected.");

u8g2.clearBuffer();

u8g2.setFont(u8g2_font_ncenB12_tr);

u8g2.drawStr(10,35,"CONNECTED !");

u8g2.sendBuffer();

delay(2000);

u8g2.clearBuffer();

u8g2.setFont(u8g2_font_ncenB08_tr);

u8g2.drawStr(03,10,"Total");

u8g2.setFont(u8g2_font_ncenB08_tr);

u8g2.drawStr(60,60,"subscribers");

u8g2.setFont( u8g2_font_ncenB18_tn );

u8g2.setCursor(24, 40);

u8g2.print(count);

u8g2.sendBuffer();

ThingSpeak.writeField(myChannelNumber, 1, count, myWriteAPIKey);

}

}

void loop() {

buttonState = digitalRead(buttonPin);

if (buttonState == 1)

{

count++;

u8g2.clearBuffer();

u8g2.setFont(u8g2_font_ncenB08_tr);

u8g2.drawStr(03,10,"Total");

u8g2.setFont(u8g2_font_ncenB08_tr);

u8g2.drawStr(60,60,"subscribers");

u8g2.setFont( u8g2_font_ncenB18_tn );

u8g2.setCursor(24, 40);

u8g2.print(count);

u8g2.sendBuffer();

ThingSpeak.writeField(myChannelNumber, 1, count, myWriteAPIKey);

}

else

{

}

}

[Christopher Stapels]

It seems you write to ThingSpeak only if the button is pressed. Why is it a problem if it slows the execution? What are you observing that is a problem?

[Akshada Shinde]

@Christopher Stapels It is creating unneccesary DELAY for displaying ouput on my Display and also there is not much time in 1st and 2nd input

[Christopher Stapels]

Can you describe your project? What are you tring to do? What is the desired result?

I see you have a thingSpeakWrite in the setup and the loop. I dont see any delay betweeen them. If you have the button depressed on startup, that could created too frequent of write calls. Are you using the free license? if so, you would have to wait 15 seconds after startup to press the button, and 15 seconds between each bitton press.