49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
/*
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Fade
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This example shows how to fade an LED on pin 6 of a seesaw board using the analogWrite()
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function.
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The analogWrite() function uses PWM, so if you want to change the pin you're
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using, be sure to use another PWM capable pin.
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On the SAMD09 breakout these are pins 5, 6, and 7
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On the ATtinyxy7 breakout these are pins 0, 1, 9, 12, 13
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On the ATtinyxy6 breakout these are pins 0, 1, 7, 11, 16
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*/
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#include "Adafruit_seesaw.h"
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Adafruit_seesaw ss;
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int led = 6; // the PWM pin the LED is attached to
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int brightness = 0; // how bright the LED is
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int fadeAmount = 5; // how many points to fade the LED by
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// the setup routine runs once when you press reset:
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void setup() {
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Serial.begin(115200);
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while (!Serial) delay(10); // wait until serial port is opened
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if(!ss.begin()){
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Serial.println("seesaw not found!");
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while(1) delay(10);
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}
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}
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// the loop routine runs over and over again forever:
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void loop() {
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// set the brightness of the LED:
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ss.analogWrite(led, brightness);
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// change the brightness for next time through the loop:
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brightness = brightness + fadeAmount;
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// reverse the direction of the fading at the ends of the fade:
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if (brightness <= 0 || brightness >= 255) {
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fadeAmount = -fadeAmount;
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}
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// wait for 30 milliseconds to see the dimming effect
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delay(30);
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}
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