Hello! I took a Robotics class in college a few years ago, that's the full extent of my Arduino knowledge.
I've been working on a program for a button that interacts with NeoPixel RGBWs differently based on whether the button is clicked or held. I've browsed and tried out bits of code from a bunch of different topics here on the forum, and have spliced together something that is 90% working!
The code for the button Click works fine. It does a simple ColorShift, and I'm able to run as many Clicks as I'd like. But once I try out a button Hold, I'm unable to go back to doing just Clicks. I'm guessing the code is getting caught somewhere, but I'm unable to figure out where.
I've tried troubleshooting by adding in several Serial printouts to the monitor, but they indicate that the Click Event is running normally with every button click, but the LEDs don't react if the Hold Event had been previously triggered.
I'm using an Arduino UNO, 3 LEDS from a NeoPixel Digital RGBW strip, and a lil push button.
NeoPixels = GND, PIN 6, and 5V
Button = GND, PIN 2
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif
#define pixelCount 3 // Number of NeoPixels
#define buttonPin 2 // input pin to use as a digital input
#define ledPin1 6 // digital output pin for LED strip
// Declare our NeoPixel strip object:
Adafruit_NeoPixel strip(pixelCount, ledPin1, NEO_GRBW + NEO_KHZ800);
boolean ledVal1 = false; // state of LED strip
void setup() {
Serial.begin(9600);
Serial.println("Setup");
// Set button input pin
pinMode(buttonPin, INPUT);
digitalWrite(buttonPin, HIGH );
// Set LED output pins
pinMode(ledPin1, OUTPUT);
digitalWrite(ledPin1, ledVal1);
strip.begin(); // Initialize NeoPixel strip object (REQUIRED)
strip.show(); // Initialize all pixels to 'off'
strip.setBrightness(10);
}
void loop() {
// Get button event and act accordingly
int b = checkButton();
if (b == 1) clickEvent();
if (b == 2) holdEvent();
}
// Events that can trigger
void clickEvent() {
Serial.println("Click");
colorWipe(strip.Color(255, 0, 255), 50); // Magenta Flash
delay(100);
colorWipe(strip.Color(0, 0, 0), 50); // Black/OFF
digitalWrite(ledPin1, ledVal1);
}
void holdEvent() {
Serial.println("Hold");
brighten(strip.Color(255, 0, 255), 5); // Magenta Bright
delay(500);
brighten(strip.Color(255, 0, 255), 25); // Magenta Brighter
delay(500);
brighten(strip.Color(255, 0, 255), 50); // Magenta Brightest
delay(500);
brighten(strip.Color(0, 0, 0), 0); // Black/OFF
digitalWrite(ledPin1, ledVal1);
}
// Commands for LEDs
void brighten(uint32_t color, int intensity){
for (int i=0; i< strip.numPixels(); i++) {
strip.setPixelColor(i, color);
strip.setBrightness(intensity);
strip.show();
delay(10);
}
}
void colorWipe(uint32_t color, int wait) {
for(int i=0; i<strip.numPixels(); i++) { // For each pixel in strip...
strip.setPixelColor(i, color); // Set pixel's color (in RAM)
strip.show(); // Update strip to match
delay(wait); // Pause for a moment
}
}
// SO What Is The Button Doing?? //
int debounce = 20; // debounce period
int holdTime = 1000; // Hold period, how long to wait
boolean buttonVal = HIGH; // value read from bottom
boolean buttonLast = HIGH; // value of button's previous state
long downTime = -1; // time button has been held
long upTime = -1; // time button was released
boolean ignoreUp = false;
boolean waitForUp = false;
boolean holdEventPast = false; // whether Hold occured
int checkButton() {
int event = 0;
buttonVal = digitalRead(buttonPin);
// Button is pressed down
if (buttonVal == LOW && buttonLast == HIGH && (millis() - upTime) > debounce) {
Serial.println("Pressed");
downTime = millis();
ignoreUp = false;
waitForUp = false;
holdEventPast = false;
}
// Button is released quickly
else if (buttonVal == HIGH && buttonLast == LOW && (millis() - downTime) > debounce) {
if (not ignoreUp) {
upTime = millis();
Serial.println("Released");
event = 1;
}
}
// Is Button Being Held Down?
if (buttonVal == LOW && (millis() - downTime) >= holdTime) {
// Trigger Hold if not already
if (not holdEventPast) {
Serial.println("Holding");
event = 2;
waitForUp = true;
ignoreUp = true;
holdEventPast = true;
}
}
buttonLast = buttonVal;
return event;
}
I'm guessing it's just something totally obvious that I'm overlooking or didn't 100% understand when implementing.
Thank you so much for your time!
