Pin High and Low Message

Projects Programming
1

I am trying to make an SMS notification for my backup generator, Basically when my generator comes on because of lost of power it should send me an SMS message. Currently I have the following code working with a push button however I am trying to make it message me when the pin goes hi and when it goes low but only one time each.

<void loop()
{
if(digitalRead(genonpin)==HIGH)
{

Serial.println("button pressed");
delay(20000);
SendOnMessage();
}>

Because this is a loop if the pin stays hi it will send me messages over and over which is not what I want. Anyone has a better approach for such project?

Thanks in advance!

2

I am trying to make it message me when the pin goes hi and when it goes low

Take a look at the StateChangeDetection example in the IDE

Each time you read the state of the input compare it with the value the previous time you read it

3

Thanks I'll take a look and see how that helps. I tried to post in a code box but could not find it lol my first post hopefully I will do much better next time.

4

It is never too late to edit your original post :slight_smile: and include code tags

5

I tried to post in a code box but could not find it

See Read this before posting a programming question