Moirtz Wagner
379b4887c3
--add local timezone --add sunrise/sunset calculation and LED illumination accordingly --remove touch sensor check --change mqtt messages
89 lines
3.0 KiB
C++
89 lines
3.0 KiB
C++
/*************************************************************
|
|
digitalRead.ino
|
|
SparkFun SX1509 I/O Expander Example: digital in (digitalRead)
|
|
Jim Lindblom @ SparkFun Electronics
|
|
Original Creation Date: September 21, 2015
|
|
https://github.com/sparkfun/SparkFun_SX1509_Arduino_Library
|
|
|
|
This example demonstrates the SX1509's digitalRead
|
|
functionality. A pin can either be set as an INPUT or
|
|
INPUT_PULLUP. We'll attach an active-low button to an
|
|
INPUT_PULLUP input, then whenever the button read's LOW, we'll
|
|
read the state of another INPUT pin.
|
|
|
|
After uploading the sketch, open your serial monitor and set
|
|
it to 115200 baud.
|
|
|
|
Hardware Hookup:
|
|
SX1509 Breakout ------ Arduino -------- Breadboard
|
|
GND -------------- GND
|
|
3V3 -------------- 3.3V
|
|
SDA ------------ SDA (A4)
|
|
SCL ------------ SCL (A5)
|
|
0 ---------------------------------]BTN[----GND
|
|
8 -----------------------------Jumper (GND or 3.3V)
|
|
|
|
Development environment specifics:
|
|
IDE: Arduino 1.6.5
|
|
Hardware Platform: Arduino Uno
|
|
SX1509 Breakout Version: v2.0
|
|
|
|
This code is beerware; if you see me (or any other SparkFun
|
|
employee) at the local, and you've found our code helpful,
|
|
please buy us a round!
|
|
|
|
Distributed as-is; no warranty is given.
|
|
*************************************************************/
|
|
|
|
#include <Wire.h> // Include the I2C library (required)
|
|
#include <SparkFunSX1509.h> //Click here for the library: http://librarymanager/All#SparkFun_SX1509
|
|
|
|
// SX1509 I2C address (set by ADDR1 and ADDR0 (00 by default):
|
|
const byte SX1509_ADDRESS = 0x3E; // SX1509 I2C address
|
|
SX1509 io; // Create an SX1509 object to be used throughout
|
|
|
|
// SX1509 Pins:
|
|
const byte SX1509_BUTTON_PIN = 0; // Active-low button
|
|
const byte SX1509_INPUT_PIN = 8; // Floating or jumpered input
|
|
|
|
void setup()
|
|
{
|
|
// Serial is used in this example to display the input value
|
|
// of the SX1509_INPUT_PIN input:
|
|
Serial.begin(115200);
|
|
Serial.println("SX1509 Example");
|
|
|
|
Wire.begin();
|
|
|
|
// Call io.begin(<address>) to initialize the SX1509. If it
|
|
// successfully communicates, it'll return 1.
|
|
if (io.begin(SX1509_ADDRESS) == false)
|
|
{
|
|
Serial.println("Failed to communicate. Check wiring and address of SX1509.");
|
|
while (1)
|
|
; // If we fail to communicate, loop forever.
|
|
}
|
|
|
|
// use io.pinMode(<pin>, <mode>) to set input pins as either
|
|
// INPUT or INPUT_PULLUP. Set up a floating (or jumpered to
|
|
// either GND or 3.3V) pin to an INPUT:
|
|
io.pinMode(SX1509_INPUT_PIN, INPUT);
|
|
// Use a pull-up resistor on the button's input pin. When
|
|
// the button is pressed, the pin will be read as LOW:
|
|
io.pinMode(SX1509_BUTTON_PIN, INPUT_PULLUP);
|
|
}
|
|
|
|
void loop()
|
|
{
|
|
// use io.digitalRead(<pin>) to check if an SX1509 input
|
|
// pin is either HIGH or LOW.
|
|
if (io.digitalRead(SX1509_BUTTON_PIN) == LOW)
|
|
{
|
|
// If the button is pressed (the pin reads LOW)
|
|
// Print the status of the other pin:
|
|
Serial.print("SX1509_INPUT_PIN status: ");
|
|
// Read the pin to print either 0 or 1
|
|
Serial.println(io.digitalRead(SX1509_INPUT_PIN));
|
|
}
|
|
}
|