There is no USPS pickup on Monday Feb 15th, 2016 because of President's Day. USPS orders placed after 11am EST Fri February 12th will go out Tuesday February 16. UPS orders will ship as normal.

Is this slow response time normal?
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Is this slow response time normal?

by ubestbsteppin on Thu Nov 08, 2012 8:20 pm

I'm new to arduino's and am curious if the response time I'm seeing between a button press and LED illumination or normal. Here is the part of my code that I'm talking about:

Code: Select all | TOGGLE FULL SIZE
void  loop()
{
    DateTime now = RTC.now();
  setTime(now.hour(),now.minute(),now.second(),now.day(),now.month(),now.year()); // set time & date
  Alarm.delay(1000);
  Alarm.delay(1000);
  btn2val = digitalRead(btn2);
  if (btn2val == LOW) {
  do1();
  }
  btn1val = digitalRead(btn1);
  if (btn1val == LOW) {
    Serial.println("Button 1 pressed");
    do2();
  }
  btn3val = digitalRead(btn3);
  if (btn3val == LOW) {
    do3();
  }
}


Each of the functions illuminate an LED and write to an LCD. Like this:

Code: Select all | TOGGLE FULL SIZE
void do2()
{
 digitalWrite(rgbledPin1, HIGH);   
 digitalWrite(rgbledPin2, HIGH);
lcd.clear();
lcd.print("Positive");
   delay(3000);
 lcd.clear();
 lcd.print("Ready for input");
 
}


The issue is that I have to hold down the button for about 1 second before the function will run. I was thinking that maybe the loop just doesn't run fast enough to detect the button press unless it is held down. Is that correct?

ubestbsteppin
 
Posts: 23
Joined: Fri Aug 05, 2011 7:16 pm

Re: Is this slow response time normal?

by adafruit_support_bill on Fri Nov 09, 2012 7:01 am

It looks like you have a lot of delays in your code. These will slow down the loop and your button-press detection.

adafruit_support_bill
 
Posts: 45726
Joined: Sat Feb 07, 2009 10:11 am

Please be positive and constructive with your questions and comments.