Набор для Arduino

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R9AL | 2018 / Arduino : Набор для Arduino "37 SENSOR" - 37. Rotary encoder module

Описание

Подключение:

"CLK" - энкодер контакт "A"
"DT" - энкодер контакт "B"
"SW" - кнопка
"+" - питание "+5 В"
"GND" - общий

Пример кода:

int redPin = 2;
int yellowPin = 3;
int greenPin = 4;
int aPin = 6;
int bPin = 7;
int buttonPin = 5;
int state = 0;
int longPeriod = 5000; / / Time at green or red
int shortPeriod = 700; / / Time period when changing
int targetCount = shortPeriod;
int count = 0;
void setup ()
{
pinMode (aPin, INPUT);
pinMode (bPin, INPUT);
pinMode (buttonPin, INPUT);
pinMode (redPin, OUTPUT);
pinMode (yellowPin, OUTPUT);
pinMode (greenPin, OUTPUT);
}
void loop ()
{
count + +;
if (digitalRead (buttonPin))
{
setLights (HIGH, HIGH, HIGH);
}
else
{
int change = getEncoderTurn ();
int newPeriod = longPeriod + (change * 1000);
if (newPeriod> = 1000 && newPeriod <= 10000)
{
longPeriod = newPeriod;
}
if (count> targetCount)
{
setState ();
count = 0;
}
}
delay (1);
}
int getEncoderTurn ()
{
/ / Return -1, 0, or +1
static int oldA = LOW;
static int oldB = LOW;
int result = 0;
int newA = digitalRead (aPin);
int newB = digitalRead (bPin);
if (newA! = oldA | | newB! = oldB)
{
/ / Something has changed
if (oldA == LOW && newA == HIGH)
{
result = - (oldB * 2 - 1);
}
}
oldA = newA;
oldB = newB;
return result;
}
int setState ()
{
if (state == 0)
{
setLights (HIGH, LOW, LOW);
targetCount = longPeriod;
state = 1;
}
else if (state == 1)
{
setLights (HIGH, HIGH, LOW);
targetCount = shortPeriod;
state = 2;
}
else if (state == 2)
{
setLights (LOW, LOW, HIGH);
targetCount = longPeriod;
state = 3;
}
else if (state == 3)
{
setLights (LOW, HIGH, LOW);
targetCount = shortPeriod;
state = 0;
}
}
void setLights (int red, int yellow, int green)
{
digitalWrite (redPin, red);
digitalWrite (yellowPin, yellow);
digitalWrite (greenPin, green);
}