root
88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
#include <Arduino.h>
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#include <OneWire.h>
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#include <DallasTemperature.h>
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#include "config.h"
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#include "sensors.h"
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SensorData sensors;
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OneWire oneWire(ONEWIRE_PIN);
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DallasTemperature ds18b20(&oneWire);
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DeviceAddress sensorAddresses[4];
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int sensorCount = 0;
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float cToF(float c) {
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return (c * 9.0 / 5.0) + 32.0;
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}
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bool validTempC(float tempC) {
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return tempC != DEVICE_DISCONNECTED_C && tempC > -55 && tempC < 125;
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}
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void printAddress(DeviceAddress address) {
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for (uint8_t i = 0; i < 8; i++) {
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if (address[i] < 16) Serial.print("0");
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Serial.print(address[i], HEX);
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if (i < 7) Serial.print(":");
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}
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}
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void printSensorAddresses() {
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Serial.println("DS18B20 Sensors Found:");
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for (int i = 0; i < sensorCount; i++) {
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Serial.print("Sensor ");
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Serial.print(i);
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Serial.print(": ");
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printAddress(sensorAddresses[i]);
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Serial.println();
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}
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if (sensorCount == 0) {
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Serial.println("No DS18B20 sensors found.");
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}
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}
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void initSensors() {
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ds18b20.begin();
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sensorCount = ds18b20.getDeviceCount();
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if (sensorCount > 4) {
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sensorCount = 4;
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}
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for (int i = 0; i < sensorCount; i++) {
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ds18b20.getAddress(sensorAddresses[i], i);
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}
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printSensorAddresses();
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}
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void updateSensors() {
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ds18b20.requestTemperatures();
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float tempsF[4] = {-127, -127, -127, -127};
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bool online[4] = {false, false, false, false};
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for (int i = 0; i < sensorCount; i++) {
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float tempC = ds18b20.getTempC(sensorAddresses[i]);
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if (validTempC(tempC)) {
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tempsF[i] = cToF(tempC);
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online[i] = true;
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}
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}
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sensors.fridgeZone1 = tempsF[0];
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sensors.fridgeZone2 = tempsF[1];
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sensors.rearSeat = tempsF[2];
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sensors.outsideAir = tempsF[3];
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sensors.fridgeZone1Online = online[0];
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sensors.fridgeZone2Online = online[1];
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sensors.rearSeatOnline = online[2];
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sensors.outsideAirOnline = online[3];
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}
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