split project a bit

include/CCS811Sensor.h

@@ -0,0 +1,23 @@
+// CCS811Sensor.h
+
+#ifndef CCS811SENSOR_H
+#define CCS811SENSOR_H
+#define CCS811_WAK 23
+
+#include "ccs811.h" // Include CCS811 library
+
+class CCS811Sensor {
+public:
+  CCS811Sensor(uint8_t wakePin = CCS811_WAK); // Constructor
+  void init(double* temperature, double* humidity); // temp and hum needed to correct env
+  void init(); // Initialize without temperature and humidity
+  void read_values(uint16_t* eco2, uint16_t* etvoc, uint16_t* errstat, uint16_t* raw);
+
+private:
+  uint8_t _wakePin; // CCS811 wake pin
+  CCS811 ccs811; // CCS811 object
+  double* _temperaturePtr; // Pointer to temperature value
+  double* _humidityPtr; // Pointer to humidity value
+};
+
+#endif // CCS811SENSOR_H

include/HDC1080Sensor.h

@@ -0,0 +1,20 @@
+// HDC1080Sensor.h
+
+#ifndef HDC1080SENSOR_H
+#define HDC1080SENSOR_H
+#define HDC1080_ADDR 0x40
+
+#include "ClosedCube_HDC1080.h"
+
+class HDC1080Sensor {
+public:
+    HDC1080Sensor(uint8_t address = HDC1080_ADDR); // Constructor
+    void init(); // Initialize HDC1080 sensor
+    void read_values(double* temperature, double* humidity, bool* success); // Read temperature and humidity values
+
+private:
+    uint8_t _address; // HDC1080 I2C address
+    ClosedCube_HDC1080 hdc1080; // HDC1080 object
+};
+
+#endif // HDC1080SENSOR_H

src/main.cpp

@@ -1,26 +1,8 @@
-/***************************************************
-
-  Wemos D1 mini or NodeMCU 1.0
-  VCC - 3.3V
-  GND - G
-  SCL - D1 -- GPIO 5
-  SDA - D2 -- GPIO 4
-  WAK - D3 -- GPIO 0
-
-  ESP32
-  VCC - 3.3V
-  GND - G
-  SCL - 19
-  SDA - 18
-  WAK - 23
-
- ****************************************************/
-
 #include "ESPAsyncWebServer.h"
 #include <WiFi.h>
 #include <Wire.h>
-#include "ClosedCube_HDC1080.h" // HDC1080 library - https://github.com/closedcube/ClosedCube_HDC1080_Arduino // 14.04.2019
-#include "ccs811.h"  // CCS811 library - https://github.com/maarten-pennings/CCS811 // 13.03.2020
+#include "HDC1080Sensor.h"
+#include "CCS811Sensor.h"
 #include <time.h>
 //#include "src/ESPinfluxdb.h" // https://github.com/hwwong/ESP_influxdb // 14.04.2019
 #include "http_static.h" // HTTP pages and JSON request templates
@@ -29,12 +11,6 @@
 // DeepSleep time – send data every 60 seconds
 const int sleepTimeS = 60;
 
-//Global sensor objects
-#define CCS811_WAK 23
-
-CCS811 ccs811(CCS811_WAK);
-ClosedCube_HDC1080 hdc1080;
-
 // WiFi Config
 #define WiFi_SSID "Ischtar"
 #define WiFi_Password "highfive"
@@ -43,14 +19,19 @@ ClosedCube_HDC1080 hdc1080;
 const char* ntpServer = "pool.ntp.org";
 const long  gmtOffset_sec = 0;
 const int   daylightOffset_sec = 3600;
+struct tm timeinfo;
 
 // Create AsyncWebServer object on port 80
 AsyncWebServer server(80);
 
+// Globals for HDC1080
+HDC1080Sensor HDC1080_sensors;
+double hdc1080_temp, hdc1080_humidity;
+bool hdc1080_err;
+
 // Globals for CCS811
+CCS811Sensor CCS811_sensors;
 uint16_t eco2, etvoc, errstat, raw;
-// Globals for timestamp
-struct tm timeinfo;
 
 // loop cycle
 #define workCycle 60 //seconds
@@ -58,25 +39,23 @@ struct tm timeinfo;
 
 String readHDC1080Temperature() {
   // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
-  float t = hdc1080.readTemperature();
-  if (isnan(t)) {
+  if (isnan(hdc1080_temp)) {
     Serial.println("Failed to read from HDC1080 sensor!");
     return "--";
   }
   else {
-    return String(t);
+    return String(hdc1080_temp);
   }
 }
 
 String readHDC1080Humidity() {
   // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
-  float h = hdc1080.readHumidity();
-  if (isnan(h)) {
+  if (isnan(hdc1080_humidity)) {
     Serial.println("Failed to read from HDC1080 sensor!");
     return "--";
   }
   else {
-    return String(h);
+    return String(hdc1080_humidity);
   }
 }
 
@@ -88,19 +67,25 @@ String processCCS811Error(err_t errstat) {
     Serial.println("CCS811: I2C error");
     return "i2c error";
   } else {
-    Serial.print("CCS811: errstat="); Serial.print(errstat, HEX);
-    Serial.print("="); Serial.println( ccs811.errstat_str(errstat) );
-    return "<span color='red' title='" + String(ccs811.errstat_str(errstat)) + "'>CCS811 sensor error</span>";
+    // Serial.print("CCS811: errstat="); Serial.print(errstat, HEX);
+    // Serial.print("="); Serial.println( ccs811.errstat_str(errstat) );
+    return "error";
   }
 }
 
-
-
 String readCCS811TVOC() {
+  if( errstat==CCS811_ERRSTAT_OK ){
     return String(etvoc);
+  } else {
+    return processCCS811Error(errstat);
+  }
 }
 String readCCS811ECO2() {
+  if( errstat==CCS811_ERRSTAT_OK ){
     return String(eco2);
+  } else {
+    return processCCS811Error(errstat);
+  }
 }
 
 String formatISO8601() {
@@ -171,29 +156,14 @@ void setup()
   // Config NTP
   configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
 
-  // hdc1080 info
-  hdc1080.begin(0x40);
-  Serial.print("Manufacturer ID=0x");
-  Serial.println(hdc1080.readManufacturerId(), HEX); // 0x5449 ID of Texas Instruments
-  Serial.print("Device ID=0x");
-  Serial.println(hdc1080.readDeviceId(), HEX); // 0x1050 ID of the device
-
   // i2c
   Wire.begin();
 
-  Serial.println("CCS811 test");
-  // Enable CCS811
-  bool ok = ccs811.begin();
-  if ( !ok ) Serial.println("setup: CCS811 begin FAILED");
+  // humidity and temperature
+  HDC1080_sensors.init();
+  // eCO2 and eTVOC, temp and humidity needed to adjust values
+  CCS811_sensors.init(&hdc1080_temp, &hdc1080_humidity);
 
-  // Print CCS811 versions
-  Serial.print("setup: hardware    version: "); Serial.println(ccs811.hardware_version(), HEX);
-  Serial.print("setup: bootloader  version: "); Serial.println(ccs811.bootloader_version(), HEX);
-  Serial.print("setup: application version: "); Serial.println(ccs811.application_version(), HEX);
-
-  // Start measuring
-  ok = ccs811.start(CCS811_MODE_1SEC);
-  if ( !ok ) Serial.println("init: CCS811 start FAILED");
 
   // Pages and JSONs
   server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
@@ -232,27 +202,17 @@ void loop()
     Serial.println("Failed to obtain time");
     return;
   }
+
   Serial.print(&timeinfo, "[%M-%d-%Y--%H:%M:%S]: ");
 
-  Serial.print("H=");  Serial.print(readHDC1080Temperature());  Serial.print(" °C  ");
-  Serial.print("T="); Serial.print(readHDC1080Temperature()); Serial.print(" %  ");
-  // Read CCS811
-  ccs811.read(&eco2,&etvoc,&errstat,&raw);
-
-  // Process CCS811
-  if( errstat==CCS811_ERRSTAT_OK ) {
-    Serial.print("eco2=");  Serial.print(eco2);  Serial.print(" ppm  ");
-    Serial.print("etvoc="); Serial.print(etvoc); Serial.print(" ppb  ");
-  } else if( errstat==CCS811_ERRSTAT_OK_NODATA ) {
-    Serial.print("waiting for (new) data");
-  } else if( errstat & CCS811_ERRSTAT_I2CFAIL ) {
-    Serial.print("I2C error");
-  } else {
-    Serial.print( "error: " );
-    Serial.print( ccs811.errstat_str(errstat) );
-  }
-  Serial.println();
+  HDC1080_sensors.read_values(&hdc1080_temp, &hdc1080_humidity, &hdc1080_err);
+  CCS811_sensors.read_values(&eco2, &etvoc, &errstat, &raw);
 
+  Serial.print("H=");     Serial.print(readHDC1080Temperature());  Serial.print(" °C  ");
+  Serial.print("T=");     Serial.print(readHDC1080Humidity());     Serial.print(" %  ");
+  Serial.print("eco2=");  Serial.print(readCCS811ECO2());          Serial.print(" ppm  ");
+  Serial.print("etvoc="); Serial.print(readCCS811TVOC());          Serial.print(" ppb  ");
+  Serial.println("");
   // Wait
   delay(workCycle*1000);
 }

src/sensors/CCS811Sensor.cpp

@@ -0,0 +1,31 @@
+// CCS811Sensor.cpp
+
+#include "CCS811Sensor.h"
+
+CCS811Sensor::CCS811Sensor(uint8_t wakePin) : _wakePin(wakePin), ccs811(wakePin) {
+  // Constructor sets the wake pin and initializes the ccs811 object
+}
+
+void CCS811Sensor::init(double* temperature, double* humidity) {
+  // Enable CCS811
+  bool ok = ccs811.begin();
+  // let's handle if not OK later
+  // Lock pointers to temperature and humidity values
+  ok = ccs811.start(CCS811_MODE_1SEC);
+  // if( !ok ) Serial.println("setup: CCS811 start FAILED");
+  _temperaturePtr = temperature;
+  _humidityPtr = humidity;
+}
+
+void CCS811Sensor::init() {
+  bool ok = ccs811.begin();
+}
+
+void CCS811Sensor::read_values(uint16_t* eco2, uint16_t* etvoc, uint16_t* errstat, uint16_t* raw) {
+  if (_temperaturePtr && _humidityPtr) {
+    // Set environmental data for CCS811 sensor using pointers
+    ccs811.set_envdata(*_temperaturePtr, *_humidityPtr);
+  }
+  // Read eCO2, eTVOC, error status, and raw data values from CCS811 sensor
+  ccs811.read(eco2, etvoc, errstat, raw);
+}

src/sensors/HDC1080Sensor.cpp

@@ -0,0 +1,19 @@
+// HDC1080Sensor.cpp
+
+#include "HDC1080Sensor.h"
+
+HDC1080Sensor::HDC1080Sensor(uint8_t address) : _address(address) {
+    // Constructor sets the address
+}
+
+void HDC1080Sensor::init() {
+    hdc1080.begin(_address); // Initialize HDC1080 sensor with the specified address
+}
+
+void HDC1080Sensor::read_values(double* temperature, double* humidity, bool* success) {
+    if (temperature) *temperature = hdc1080.readTemperature();
+    if (humidity) *humidity = hdc1080.readHumidity();
+
+    // Set success flag based on whether readings were successful
+    if (success) *success = !isnan(*temperature) && !isnan(*humidity);
+}