arduino-toy-projects/arduino_03/src/main.cpp

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2021-04-28 18:51:30 +02:00
#include <Arduino.h>
#define BASE_TEMP_SAMPLE_COUNT 10
#define BASE_TEMP_SAMPLE_DELAY 100
#define BIGGEST_PIN 5
#define SMALLEST_PIN 3
const byte sensorPin = PIN_A1;
float baseTemp = 0;
float getTemperature();
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
digitalWrite(LED_BUILTIN, HIGH);
Serial.begin(9600);
for (int pinNumber = SMALLEST_PIN; pinNumber < BIGGEST_PIN + 1; pinNumber++) {
pinMode(pinNumber, OUTPUT);
digitalWrite(pinNumber, LOW);
}
float sum = 0;
for (int i = 0; i < BASE_TEMP_SAMPLE_COUNT; i++) {
sum += getTemperature();
delay(BASE_TEMP_SAMPLE_DELAY);
}
baseTemp = sum / BASE_TEMP_SAMPLE_COUNT;
digitalWrite(LED_BUILTIN, LOW);
}
void loop() {
float temp = getTemperature();
byte pinLimit = SMALLEST_PIN;
if (temp > baseTemp + 4) {
pinLimit = SMALLEST_PIN + 3;
} else if (temp > baseTemp + 2) {
pinLimit = SMALLEST_PIN + 2;
} else if (temp > baseTemp + 0.5) {
pinLimit = SMALLEST_PIN + 1;
}
for (byte pin = SMALLEST_PIN; pin < pinLimit; pin++) {
digitalWrite(pin, HIGH);
}
for (byte pin = pinLimit; pin < BIGGEST_PIN + 1; pin++) {
digitalWrite(pin, LOW);
}
delay(100);
}
float getTemperature() {
const int sensorVal = analogRead(sensorPin);
// Serial.print("Valeur capteur: ");
// Serial.print(sensorVal);
float voltage = sensorVal / 1024.0 * 5.0;
// Serial.print(", voltage: ");
// Serial.print(voltage);
float temperature = (voltage - .5) * 100;
// Serial.print(", temperature: ");
// Serial.println(temperature);
return temperature;
}