Moirtz Wagner
379b4887c3
--add local timezone --add sunrise/sunset calculation and LED illumination accordingly --remove touch sensor check --change mqtt messages
88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
/*************************************************************
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analogWrite.ino
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SparkFun SX1509 I/O Expander Example: pwm output (analogWrite)
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Jim Lindblom @ SparkFun Electronics
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Original Creation Date: September 21, 2015
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https://github.com/sparkfun/SparkFun_SX1509_Arduino_Library
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This example demonstrates the SX1509's analogWrite function.
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Connect an LED to the SX1509's pin 15 (or any other pin, they
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can all PWM!). The SX1509 can either sink or source current,
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just don't forget your limiting resistor!
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Hardware Hookup:
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SX1509 Breakout ------ Arduino -------- Breadboard
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GND -------------- GND
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3V3 -------------- 3.3V
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SDA ------------ SDA (A4)
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SCL ------------ SCL (A5)
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15 -------------------------------- LED+
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LED- -/\/\/\- GND
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330
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Development environment specifics:
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IDE: Arduino 1.6.5
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Hardware Platform: Arduino Uno
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SX1509 Breakout Version: v2.0
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This code is beerware; if you see me (or any other SparkFun
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employee) at the local, and you've found our code helpful,
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please buy us a round!
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Distributed as-is; no warranty is given.
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*************************************************************/
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#include <Wire.h> // Include the I2C library (required)
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#include <SparkFunSX1509.h> //Click here for the library: http://librarymanager/All#SparkFun_SX1509
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// SX1509 I2C address (set by ADDR1 and ADDR0 (00 by default):
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const byte SX1509_ADDRESS = 0x3E; // SX1509 I2C address
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SX1509 io; // Create an SX1509 object to be used throughout
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// SX1509 Pin definition:
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const byte SX1509_LED_PIN = 15; // LED to SX1509's pin 15
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void setup()
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{
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Serial.begin(115200);
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Serial.println("SX1509 Example");
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Wire.begin();
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// Call io.begin(<address>) to initialize the SX1509. If it
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// successfully communicates, it'll return 1.
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if (io.begin(SX1509_ADDRESS) == false)
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{
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Serial.println("Failed to communicate. Check wiring and address of SX1509.");
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while (1)
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; // If we fail to communicate, loop forever.
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}
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// Use the pinMode(<pin>, <mode>) function to set our led
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// pin as an ANALOG_OUTPUT, which is required for PWM output
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io.pinMode(SX1509_LED_PIN, ANALOG_OUTPUT);
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}
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void loop()
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{
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// Ramp brightness up, from 0-255, delay 2ms in between
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// analogWrite's
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for (int brightness = 0; brightness < 256; brightness++)
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{
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// Call io.analogWrite(<pin>, <0-255>) to configure the
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// PWM duty cycle
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io.analogWrite(SX1509_LED_PIN, brightness);
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delay(2); // Delay 2 milliseconds
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}
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delay(500); // Delay half-a-second
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// Ramp brightness down, from 255-0, delay 2ms in between
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// analogWrite's
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for (int brightness = 255; brightness >= 0; brightness--)
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{
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io.analogWrite(SX1509_LED_PIN, brightness);
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delay(2); // Delay 2 milliseconds
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}
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delay(500); // Delay half-a-second
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}
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