103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
/* This example shows basic usage of the
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MultiTrellis object controlling an array of
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NeoTrellis boards
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As is this example shows use of two NeoTrellis boards
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connected together with the leftmost board having the
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default I2C address of 0x2E, and the rightmost board
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having the address of 0x2F (the A0 jumper is soldered)
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*/
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#include "Adafruit_NeoTrellis.h"
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#define Y_DIM 4 //number of rows of key
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#define X_DIM 8 //number of columns of keys
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//create a matrix of trellis panels
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Adafruit_NeoTrellis t_array[Y_DIM/4][X_DIM/4] = {
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{ Adafruit_NeoTrellis(0x2E), Adafruit_NeoTrellis(0x2F) }
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};
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/*
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If you were using a 2x2 array of NeoTrellis boards, the above lines would be:
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#define Y_DIM 8 //number of rows of key
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#define X_DIM 8 //number of columns of keys
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//create a matrix of trellis panels
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Adafruit_NeoTrellis t_array[Y_DIM/4][X_DIM/4] = {
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{ Adafruit_NeoTrellis(0x2E), Adafruit_NeoTrellis(0x2F) },
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{ Adafruit_NeoTrellis(LOWER_LEFT_I2C_ADDR), Adafruit_NeoTrellis(LOWER_RIGHT_I2C_ADDR) }
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};
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*/
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//pass this matrix to the multitrellis object
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Adafruit_MultiTrellis trellis((Adafruit_NeoTrellis *)t_array, Y_DIM/4, X_DIM/4);
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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 seesaw_NeoPixel::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 seesaw_NeoPixel::Color(255 - WheelPos * 3, 0, WheelPos * 3);
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} else {
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WheelPos -= 170;
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return seesaw_NeoPixel::Color(0, WheelPos * 3, 255 - WheelPos * 3);
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}
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return 0;
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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.setPixelColor(evt.bit.NUM, Wheel(map(evt.bit.NUM, 0, X_DIM*Y_DIM, 0, 255))); //on rising
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else if(evt.bit.EDGE == SEESAW_KEYPAD_EDGE_FALLING)
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trellis.setPixelColor(evt.bit.NUM, 0); //off falling
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trellis.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) delay(1);
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if(!trellis.begin()){
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Serial.println("failed to begin trellis");
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while(1) delay(1);
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}
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/* the array can be addressed as x,y or with the key number */
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for(int i=0; i<Y_DIM*X_DIM; i++){
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trellis.setPixelColor(i, Wheel(map(i, 0, X_DIM*Y_DIM, 0, 255))); //addressed with keynum
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trellis.show();
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delay(50);
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}
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for(int y=0; y<Y_DIM; y++){
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for(int x=0; x<X_DIM; x++){
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//activate rising and falling edges on all keys
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trellis.activateKey(x, y, SEESAW_KEYPAD_EDGE_RISING, true);
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trellis.activateKey(x, y, SEESAW_KEYPAD_EDGE_FALLING, true);
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trellis.registerCallback(x, y, blink);
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trellis.setPixelColor(x, y, 0x000000); //addressed with x,y
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trellis.show(); //show all LEDs
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delay(50);
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}
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}
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}
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void loop() {
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trellis.read();
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delay(20);
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}
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