Events triggered by more than one switch press

Forum 2005-2010 (read only) Software Syntax & Programs
#1

Hello! I am trying to make different things happen when I have more than one switch pressed (break from the current loop). Trouble is, it's not working at all. It completely neglects the double code.

I have it wired so the the r is the reading from the switches. I have it set up so the switches are HIGH inputs. Whenever I try to hit both of the switches, it flashes one light then flashes the next (the digitalWrites are for LED pins).

It works every once in a while, so I'm guessing the code might be correct but my approach is wrong. What I want to happen is the user presses a switch, and if both switches are pressed, something happens. If a switch is pressed and released, the single action happens. Are these HIGH/LOW values correct?

Also, my r(1)o values are the old ones, changed at the end of my loop. All of this is enclosed in a while loop, but it's long so I'll just post a segment.

Thanks! 

 if(r1 == HIGH && r2 == HIGH && r1o != r1 && r2o != r2)
 {
       digitalWrite(m1, HIGH);
           digitalWrite(m2, HIGH);
   delay(t);
   digitalWrite(m1, LOW);
   digitalWrite(m2, LOW);
 }

 if (r1 == HIGH && r1 != r1o)
 {
    digitalWrite(m1, HIGH);
   delay(t);
   digitalWrite(m1, LOW);
 }

  if (r2 == HIGH && r2 != r2o)
 {
    digitalWrite(m2, HIGH);
   delay(t);
   digitalWrite(m2, LOW);
 }
#2

Anybody have any idea? It just doesn't make any sense to me, Here's some more of the code. 

void setup()
{
 pinMode(d1, INPUT);
 digitalWrite(d1,HIGH);
 pinMode(m1, OUTPUT);
 digitalWrite(m1, LOW);

 pinMode(m2, OUTPUT);
 digitalWrite(m2, LOW);
 pinMode(d2, INPUT);
 digitalWrite(d2, HIGH);
}

void loop()
{

r1 = digitalRead(d1);
r2 = digitalRead(d2);


 if (r1 == HIGH && r1 != r1o)
 {
    digitalWrite(m1, HIGH);
   delay(t);
   digitalWrite(m1, LOW);
 }

  if (r2 == HIGH && r2 != r2o)
 {
    digitalWrite(m2, HIGH);
   delay(t);
   digitalWrite(m2, LOW);
 }

 if(r1 == LOW && r2 == LOW && r1o != r1 && r2o != r2)
 {
       digitalWrite(m1, HIGH);
           digitalWrite(m2, HIGH);
   delay(t);
   digitalWrite(m1, LOW);
   digitalWrite(m2, LOW);
 }
}
#3

try debouncing the switches. The following is one way of doing this, it returns true if a switch (using pull-ups) is pressed for at least debounceDelay milliseconds.

boolean debounce(int pin)
{
  boolean state;  
  do
  { 
    state = digitalRead(pin);          // store switch state 
    delay(debounceDelay);              // wait for debounce delay period 
  }
  while(digitalRead(pin) != state);     // keep reading until stable
  return state == LOW;
}
#4