I am currently trying to use a pushbutton switch is set a time delay for a sequence of flashing LED's.
Currently my code is written this way
Push1_State = digitalRead(Push1);
Push2_State = digitalRead(Push2);
Push3_State = digitalRead(Push3);
/*Serial.print(PB1);
Serial.println(Push1_State);
Serial.print(PB2);
Serial.println(Push2_State);*/
if(Push3_State == LOW)
{
count = count + 1;
delay(50);
if (count == 4)
{
count = 1;
}
}
Time_D = 500 * count;
Serial.println(Push3_State);
I want to be able to push the pushbutton switch and advnce the count by 1 and then pass the time delay to the functions that control the flashing for the LED's.
Right now, the code kind of works.
When I activate the push button swith, I can see on the serial monitor that the count increases by one and my Time_D goes to 1000. However as soon I relase the pushbutton, the cound drops back down to 1 and the Time_D goes back to 500.
I tired to do if(Push3_State = LOW) but that didn't work.
Any tips?
Any tips?
1 - post your complete program or a short but complete program that illustrates the problembecomes pressed rather than when it is pressed. Look at the StateChangeDetection example in the IDE
system
April 1, 2018, 7:49am
3
Wrote this for a single button speed selector, might work for you, connect a pushbutton from GND to pin 4,each press increments counter, if no press for 1500 mS, counter value is accepted.
uint32_t tStart, timeStart, tEnd;// = 2000UL;
int speeds [] = {500, 1000, 1500, 2000, 2500};
int speed;
const byte dbTime = 15, btn = 4, ledPin = 13;
bool btnState = false, bState = true, oldBstate = true,
timing = false, speedSet = false;
byte cntr;
void setup()
{
//Serial.begin(115200);
pinMode(btn, INPUT_PULLUP);
pinMode(ledPin, OUTPUT);
}
void loop()
{
// debounce-----------------------------
if (digitalRead(btn) != btnState) // they are different!
{
btnState ^= 1; // make them equal
timeStart = millis(); // restart timer
}
if (millis() - timeStart > dbTime) // if not changed for dbTime,
bState = btnState; // btnState is valid, use it
// end debounce-------------------------
if(!timing && !bState && oldBstate)
{
tStart = millis();
tEnd = 1500UL;
cntr = 0;
timing = true;
speedSet = true;
}
if(timing && !bState && oldBstate)
{
if(++cntr > 5)
cntr = 1;
tStart = millis();
Serial.println(speeds[cntr - 1]);
oldBstate = bState;
}
if(millis() - tStart > tEnd)
{
timing = false;
if(speedSet)
{
speed = speeds[cntr - 1];
if(!bState)
speed = 0;
Serial.print("Delay set to ");
Serial.println(speed);
Serial.println("Press button to change");
speedSet = false;
}
}
digitalWrite(ledPin,timing);
oldBstate = bState;
}
Bonus
uint32_t tStart, timeStart, tEnd = 1500;
const byte dbTime = 25, btn = 4, ledPin = 13;
bool btnState = false, bState = true, oldBstate = true,
timing = false;
byte cntr;
void setup()
{
Serial.begin(115200);
pinMode(btn, INPUT_PULLUP);
pinMode(ledPin, OUTPUT);
}
void loop()
{
// debounce-----------------------------
if (digitalRead(btn) != btnState) // they are different!
{
btnState ^= 1; // make them equal
timeStart = millis(); // restart timer
}
if (millis() - timeStart > dbTime) // if not changed for dbTime,
bState = btnState; // btnState is valid, use it
// end debounce-------------------------
if(!timing && !bState && oldBstate)
{
tStart = millis();
timing = true;
}
if(timing && !bState && oldBstate)
{
cntr++;
tStart = millis();
oldBstate = bState;
}
if(millis() - tStart > tEnd)
{
timing = false;
while(cntr > 0)
{
digitalWrite(ledPin,HIGH);
delay(500);
digitalWrite(ledPin,LOW);
delay(500);
cntr --;
}
}
oldBstate = bState;
}
UKHeliBob
Thanks for the help. I was able to get my code working with the stateChangeDetection.
