#define DHTPIN 13 // Digital pin connected to the DHT sensor
// Uncomment whatever type you're using!
#define DHTTYPE DHT11 // DHT 11
DHT dht(DHTPIN, DHTTYPE);
//a,b,c,d,e,f,g 상태값
byte segValue[10][7] = { //애노드형
{0, 0, 0, 0, 0, 0, 1}, //0
{1, 0, 0, 1, 1, 1, 1}, //1
{0, 0, 1, 0, 0, 1, 0}, //2
{0, 0, 0, 0, 1, 1, 0}, //3
{1, 0, 0, 1, 1, 0, 0}, //4
{0, 1, 0, 0, 1, 0, 0}, //5
{0, 1, 0, 0, 0, 0, 0}, //6
{0, 0, 0, 1, 1, 1, 1}, //7
{0, 0, 0, 0, 0, 0, 0}, //8
{0, 0, 0, 0, 1, 0, 0} //9
};
byte segPin[8] = {4, 5, 6, 7, 8, 9, 10, 11}; //사용핀{a,b,c,d,e,f,g,dp} 순서대로임
byte digitPin[2] = {2, 3}; //segment 위치 핀
unsigned long readTime = 0; //현재시간
int d1 = 0; //1의 자리
int d2 = 0; //10의 자리
int change = 0; //온도와 습도 교차 출력
unsigned long previousMillis = 0; // will store last time LED was updated
// constants won't change:
const long interval = 2000;
void setup() {
//Serial.begin(9600);
//Serial.println(F("DHTxx test!"));
dht.begin();
for (int i = 0; i < 10; i++) {
pinMode(segPin[i], OUTPUT);
}
pinMode(digitPin[0], OUTPUT);
pinMode(digitPin[1], OUTPUT);
digitalWrite(digitPin[0], LOW);
digitalWrite(digitPin[1], LOW);
pinMode(12, OUTPUT);
}
void loop() {
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
// save the last time you blinked the LED
previousMillis = currentMillis;
if (change == 0)
{
change = 1;
}
else if (change == 1)
{
change = 0;
}
}
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
//float h = dht.readHumidity();
int h = dht.readHumidity();
// Read temperature as Celsius (the default)
//float t = dht.readTemperature();
int t = dht.readTemperature();
// Read temperature as Fahrenheit (isFahrenheit = true)
float f = dht.readTemperature(true);
if (change == 0)
{
d1 = h % 10; //1의 자리
d2 = (h / 10) % 10; //10의 자리
digitalWrite(12, HIGH);
}
if (change == 1)
{
d1 = t % 10; //1의 자리
d2 = (t / 10) % 10; //10의 자리
digitalWrite(12, LOW);
}
segOutput(1, d1, 1); //1의 자리
segOutput(0, d2, 1); //10의 자리
}
//LED 초기화
void segClear() {
for (int i = 0; i < 8; i++) {
digitalWrite(segPin[i], HIGH);
}
}
//LED 출력
void segOutput(int d, int Number, int dp) {
segClear();
digitalWrite(digitPin[d], HIGH);
for (int i = 0; i < 7; i++) {
digitalWrite(segPin[i], segValue[Number][i]);
}
digitalWrite(segPin[7], dp);
delayMicroseconds(1000);
digitalWrite(digitPin[d], LOW);
}
