Simple Timer Error

Solved
1

Hello, Please help with my project, I want to use DHT11 and send data to blynk server every 10 s
I use Simple Timer but, when I compile. it gives error like this

In file included from C:\Users\Toif\Documents\Arduino\libraries\blynk-library-master\src/Blynk/BlynkApi.h:17:0,

                 from C:\Users\Toif\Documents\Arduino\libraries\blynk-library-master\src/BlynkApiArduino.h:14,

                 from C:\Users\Toif\Documents\Arduino\libraries\blynk-library-master\src/BlynkSimpleEsp8266.h:24,

                 from C:\Users\Toif\Desktop\j\sketch_nov25a\sketch_nov25a.ino:6:

C:\Users\Toif\Documents\Arduino\libraries\blynk-library-master\src/Blynk/BlynkTimer.h:39:36: error: conflicting declaration 'typedef void (* timer_callback)()'

 typedef void (*timer_callback)(void);

                                    ^

C:\Users\Toif\Documents\Arduino\libraries\blynk-library-master\src/Blynk/BlynkTimer.h:38:35: error: 'timer_callback' has a previous declaration as 'typedef class std::function<void()> timer_callback'

 typedef std::function<void(void)> timer_callback;

                                   ^

exit status 1
Error compiling for board LOLIN(WEMOS) D1 R2 & mini.

my code :

 SimpleTimer timer;

  void send() {  
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  if (isnan(h) || isnan(t)) {
  Serial.println("Impossible de lire la sonde DHT!");
  return; }
  Blynk.virtualWrite(V2, h);
  Blynk.virtualWrite(V3, t);
  }



void setup()
{

  pinMode(Relay_1, OUTPUT);
  digitalWrite(Relay_1, HIGH);
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  dht.begin();
  timer.setInterval(1000L, send);
}

I don’t know how to do. cause there is no solution on the net

2

Blynk has a built-in timer library called BlynkTimer and it’s probably conflicting with the SimpleTimer, try using BlynkTimer: http://docs.blynk.cc/#blynk-firmware-blynktimer

3

I agree… as mentioned, use the built in BlynkTimer (based on SimpleTimer)

First, remove any #include <SimpleTimer.h> that you might have installed (it is not needed)

Then changr this to…

BlynkTimer timer;

Then change your timer from 1000 (1 second, and waaayyy too fast for a DHT11) to 10000 (10 seconds)

4

okay thanks. solved. so simpletimer is pre isntalled on blynk library hehe

5

Yes, back in Library 0.4.7