78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/* This example shows basic usage of the NeoTrellis
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with the interrupt pin.
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The buttons will light up various colors when pressed.
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*/
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#include "Adafruit_NeoTrellis.h"
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Adafruit_NeoTrellis trellis;
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#define INT_PIN 10
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// Input a value 0 to 255 to get a color value.
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// The colors are a transition r - g - b - back to r.
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uint32_t Wheel(byte WheelPos) {
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if(WheelPos < 85) {
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return trellis.pixels.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
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} else if(WheelPos < 170) {
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WheelPos -= 85;
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return trellis.pixels.Color(255 - WheelPos * 3, 0, WheelPos * 3);
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} else {
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WheelPos -= 170;
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return trellis.pixels.Color(0, WheelPos * 3, 255 - WheelPos * 3);
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}
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}
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//define a callback for key presses
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TrellisCallback blink(keyEvent evt){
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if(evt.bit.EDGE == SEESAW_KEYPAD_EDGE_RISING)
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trellis.pixels.setPixelColor(evt.bit.NUM, Wheel(map(evt.bit.NUM, 0, trellis.pixels.numPixels(), 0, 255))); //on rising
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else if(evt.bit.EDGE == SEESAW_KEYPAD_EDGE_FALLING)
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trellis.pixels.setPixelColor(evt.bit.NUM, 0); //off falling
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trellis.pixels.show();
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return 0;
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}
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void setup() {
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Serial.begin(9600);
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//while(!Serial);
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pinMode(INT_PIN, INPUT);
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if(!trellis.begin()){
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Serial.println("could not start trellis");
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while(1) delay(1);
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}
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else{
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Serial.println("trellis started");
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}
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//activate all keys and set callbacks
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for(int i=0; i<NEO_TRELLIS_NUM_KEYS; i++){
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trellis.activateKey(i, SEESAW_KEYPAD_EDGE_RISING);
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trellis.activateKey(i, SEESAW_KEYPAD_EDGE_FALLING);
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trellis.registerCallback(i, blink);
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}
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//do a little animation to show we're on
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for(uint16_t i=0; i<trellis.pixels.numPixels(); i++) {
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trellis.pixels.setPixelColor(i, Wheel(map(i, 0, trellis.pixels.numPixels(), 0, 255)));
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trellis.pixels.show();
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delay(50);
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}
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for(uint16_t i=0; i<trellis.pixels.numPixels(); i++) {
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trellis.pixels.setPixelColor(i, 0x000000);
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trellis.pixels.show();
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delay(50);
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}
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}
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void loop() {
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if(!digitalRead(INT_PIN)){
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trellis.read(false);
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}
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delay(2);
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}
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