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Zo stránky SensorWiki
![](/sensorwiki/images/thumb/7/76/LogoAjTyvIT.png/150px-LogoAjTyvIT.png)
Svetielkujúci Workshop 7. a 14. 6. 2017
Úvod
Krok za krokom
1. Blink
2. Železničné priecestie
3. K.I.T.T. 2000
Druhá časť
Adafruit Gemma
![](/sensorwiki/images/thumb/5/5a/AdafruitGemma.png/500px-AdafruitGemma.png)
V programovacom prostredí Arduino treba najprv nastaviť typ elektronickej dosky na Adafruit Gemma 8MHz v menu Tools->Board.
![](/sensorwiki/images/9/9c/Flora_gemmaselect.gif)
Potom ešte treba vybrať vhodný programovací protokol -
vyeberiete ho z menu Tools->Programmer->USBtinyISP
![](/sensorwiki/images/0/01/Gemma_flora_selectusbtiny.gif)
Vyskúšame postupne jednoduché programy
/* Blink 1 */
#define RED_LED 1
void setup() {
pinMode(RED_LED, OUTPUT);
}
void loop() {
digitalWrite(RED_LED, HIGH);
delay(200);
digitalWrite(RED_LED, LOW);
delay(200);
}
/* Blink 3 */
#define RED_LED 0
#define GREEN_LED 1
#define BLUE_LED 2
void setup() {
pinMode(RED_LED, OUTPUT);
pinMode(GREEN_LED, OUTPUT);
pinMode(BLUE_LED, OUTPUT);
}
void loop() {
digitalWrite(RED_LED, HIGH);
delay(200);
digitalWrite(RED_LED, LOW);
delay(200);
digitalWrite(GREEN_LED, HIGH);
delay(200);
digitalWrite(GREEN_LED, LOW);
delay(200);
digitalWrite(BLUE_LED, HIGH);
delay(200);
digitalWrite(BLUE_LED, LOW);
delay(200);
}
NeoPixel RGB
#include <Adafruit_NeoPixel.h>
#define PIN 1
Adafruit_NeoPixel strip = Adafruit_NeoPixel(1, PIN, NEO_GRB + NEO_KHZ800);
void setup() {
strip.begin();
// strip.setPixelColor(n, red, green, blue, white);
strip.setPixelColor(0, 0, 0, 127);
strip.show(); // Initialize all pixels to 'off'
delay(2000);
}
void loop() {
strip.setBrightness(100);
// Some example procedures showing how to display to the pixels:
colorWipe(strip.Color(255, 0, 0), 50); // Red
colorWipe(strip.Color(0, 255, 0), 50); // Green
colorWipe(strip.Color(0, 0, 255), 50); // Blue
//colorWipe(strip.Color(0, 0, 0, 255), 50); // White RGBW
// Send a theater pixel chase in...
// theaterChase(strip.Color(127, 127, 127), 50); // White
// theaterChase(strip.Color(127, 0, 0), 50); // Red
// theaterChase(strip.Color(0, 0, 127), 50); // Blue
rainbow(20);
// rainbowCycle(20);
// theaterChaseRainbow(50);
}
// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
for(uint16_t i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, c);
strip.show();
delay(wait);
}
}
void rainbow(uint8_t wait) {
uint16_t i, j;
for(j=0; j<256; j++) {
for(i=0; i<strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel((i+j) & 255));
}
strip.show();
delay(wait);
}
}
// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
uint16_t i, j;
for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< strip.numPixels(); i++) {
strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
}
strip.show();
delay(wait);
}
}
//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
for (int j=0; j<10; j++) { //do 10 cycles of chasing
for (int q=0; q < 3; q++) {
for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, c); //turn every third pixel on
}
strip.show();
delay(wait);
for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}
//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel
for (int q=0; q < 3; q++) {
for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel on
}
strip.show();
delay(wait);
for (uint16_t i=0; i < strip.numPixels(); i=i+3) {
strip.setPixelColor(i+q, 0); //turn every third pixel off
}
}
}
}
// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
WheelPos = 255 - WheelPos;
if(WheelPos < 85) {
return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
}
if(WheelPos < 170) {
WheelPos -= 85;
return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
WheelPos -= 170;
return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}
Priklady na neopixel
Technicke informacie
- Adafruit Gemma Windows Driver: https://learn.adafruit.com/introducing-gemma/windows-setup
- Adafruit Board Arduino Manager: https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
- Neopixel Library: https://github.com/adafruit/Adafruit_NeoPixel