How to stop one void function and continue the loop?

Projects Programming
1

Sorry for my poor English.
I am a noob in Arduino. Recently I am doing my school project. I am creating one device with both physical and digital switches. I want to make it be able to be remote controlled by mobile phone.

So I choose to use Blynk cloud service and NodeMCU. The program is not difficult. I wrote for physical push button and it function well. I use the standard example of Blynk code. It also works well. But when I tried to combine these two, I am facing this problem.

Example:

void loop()
{
digitalWrite(4, HIGH);
Blynk.run();
delay (1000);
digitalWrite(4, LOW);
}

When the program go to Blynk.run(), it will stuck in the function and cannot continue to next row.

Actually I want to make them parallel. If I control a LED, I want the physical push button and Blynk digital push button both can turn on the LED.

How can I write the program?
Thanks for your help.

2

When the program go to Blynk.run(), it will stuck in the function and cannot continue to next row.

How do you know that the program does not move on ?
What happens of you use non blocking code, as in BlinkWithoutDelay, instead of delay() so that Blynk.run() is called more frequently ?

3

The demo Several Things at a Time is an extended example of BWoD and illustrates the use of millis() to manage timing without blocking. It may help with understanding the technique.

Note how each function runs very briefly and returns to loop() so the next one can be called. None of the functions tries to complete a task in one call. And there may be dozens of calls to a function before it is actually time for it to do anything.

Have a look at Using millis() for timing. A beginners guide if you need more explanation.

...R