Add bme680 bsec

WifiControlSensor/BME680.h

@@ -21,7 +21,7 @@ int BME680GetMeasure(float &t, float &p, float &h, float &g, float &a);
 int BME680Setup();
 bool BME680IsConnected();
 
-#else //CONFIG_ENABLE_BMP80
+#else //CONFIG_ENABLE_BME680
 int BME680GetMeasure(float &, float &, float&, float &, float &){return -1;};
 int BME680Setup(){SKETCH_DEBUG_PRINTLN("BME680 is disabled at build time"); return -1;};
 bool BME680IsConnected(){return false;};

WifiControlSensor/BME680_BSEC.h

@@ -0,0 +1,15 @@
+#pragma once
+#ifdef CONFIG_BME680_BSEC_ENABLE
+int BME680BSECGetMeasure(float &t, float &p, float &h, float &iaq, float &iaqAcc);
+int BME680BSECSetup();
+bool BME680BSECIsConnected();
+#else // CONFIG_ENABLE_BME680_BSEC
+int BME680BSECGetMeasure(float &, float &, float &, float &, float &) {
+  return -1;
+};
+int BME680BSECSetup() {
+  SKETCH_DEBUG_PRINTLN("BME680 BSEC is disabled at build time");
+  return -1;
+};
+bool BME680BSECIsConnected() { return false; };
+#endif

WifiControlSensor/BME680_BSEC.ino

@@ -0,0 +1,153 @@
+#ifdef CONFIG_BME680_BSEC_ENABLE
+#include "BME680_BSEC.h"
+
+#include "bsec.h"
+/* Configure the BSEC library with information about the sensor
+    18v/33v = Voltage at Vdd. 1.8V or 3.3V
+    3s/300s = BSEC operating mode, BSEC_SAMPLE_RATE_LP or BSEC_SAMPLE_RATE_ULP
+    4d/28d = Operating age of the sensor in days
+    generic_18v_3s_4d
+    generic_18v_3s_28d
+    generic_18v_300s_4d
+    generic_18v_300s_28d
+    generic_33v_3s_4d
+    generic_33v_3s_28d
+    generic_33v_300s_4d
+    generic_33v_300s_28d
+*/
+const uint8_t bsec_config_iaq[] = {
+#if CONFIG_SAMPLING_PERIODE_MS == 3000
+#include "config/generic_33v_3s_4d/bsec_iaq.txt"
+#elif CONFIG_SAMPLING_PERIODE_MS == 300000
+#include "config/generic_33v_300s_4d/bsec_iaq.txt"
+#else
+#error "Unsupport CONFIG_SAMPLING_PERIODE_MS (3000 and 300000 are supported)"
+#endif
+};
+
+#define STATE_SAVE_PERIOD                                                      \
+  UINT32_C(360 * 60 * 1000) // 360 minutes - 4 times a day
+uint16_t stateUpdateCounter = 0;
+Bsec iaqSensor;
+uint8_t bsecState[BSEC_MAX_STATE_BLOB_SIZE] = {0};
+
+// Helper function definitions
+int checkIaqSensorStatus(void) {
+  if (iaqSensor.status != BSEC_OK) {
+    if (iaqSensor.status < BSEC_OK) {
+      SKETCH_DEBUG_PRINTLN("BSEC error code : " + String(iaqSensor.status));
+
+      return -2;
+    } else {
+      SKETCH_DEBUG_PRINTLN("BSEC warning code : " + String(iaqSensor.status));
+
+      return -1;
+    }
+  }
+
+  if (iaqSensor.bme680Status != BME680_OK) {
+    if (iaqSensor.bme680Status < BME680_OK) {
+      SKETCH_DEBUG_PRINTLN("BME680 error code : " + String(iaqSensor.bme680Status));
+
+      return -2;
+    } else {
+      SKETCH_DEBUG_PRINTLN("BME680 warning code : " + String(iaqSensor.bme680Status));
+
+      return -1;
+    }
+  }
+  iaqSensor.status = BSEC_OK;
+
+  return 0;
+}
+
+void updateState(void)
+{
+  bool update = false;
+  /* Set a trigger to save the state. Here, the state is saved every STATE_SAVE_PERIOD with the
+   * first state being saved once the algorithm achieves full calibration, i.e. iaqAccuracy = 3
+   */
+  if (stateUpdateCounter == 0) {
+    if (iaqSensor.iaqAccuracy >= 3) {
+      update = true;
+      stateUpdateCounter++;
+    }
+  } else {
+    /* Update every STATE_SAVE_PERIOD milliseconds */
+    if ((stateUpdateCounter * STATE_SAVE_PERIOD) < millis()) {
+      update = true;
+      stateUpdateCounter++;
+    }
+  }
+
+  if (update) {
+    iaqSensor.getState(bsecState);
+    checkIaqSensorStatus();
+
+    SKETCH_DEBUG_PRINTLN("Writing state to EEPROM");
+
+    EepromSaveBME680State(bsecState);
+  }
+}
+
+int BME680BSECGetMeasure(float &t, float &p, float &h, float &iaq, float &iaqAcc)
+{
+  if (iaqSensor.run()) { // If new data is available
+    t      = iaqSensor.temperature;
+    p      = iaqSensor.pressure;
+    h      = iaqSensor.humidity;
+    iaq    = iaqSensor.iaq;
+    iaqAcc = iaqSensor.iaqAccuracy;
+    updateState();
+  } else {
+    return -1;
+  }
+  return 0;
+}
+
+int BME680BSECSetup()
+{
+  Wire.begin();
+  iaqSensor.begin(CONFIG_BME680_BSEC_I2C_ADDR, Wire);
+
+  SKETCH_DEBUG_PRINTLN("\nBSEC library version " + String(iaqSensor.version.major) + "." +
+           String(iaqSensor.version.minor) + "." + String(iaqSensor.version.major_bugfix) +
+           "." + String(iaqSensor.version.minor_bugfix));
+
+  if (checkIaqSensorStatus())
+    return -1;
+
+  iaqSensor.setConfig(bsec_config_iaq);
+
+  if (checkIaqSensorStatus())
+    return -1;
+
+  if (!EepromLoadBME680State(bsecState))
+    iaqSensor.setState(bsecState);
+
+  if (checkIaqSensorStatus())
+    return -1;
+
+  bsec_virtual_sensor_t sensorList[7] = {
+      BSEC_OUTPUT_RAW_TEMPERATURE,
+      BSEC_OUTPUT_RAW_PRESSURE,
+      BSEC_OUTPUT_RAW_HUMIDITY,
+      BSEC_OUTPUT_RAW_GAS,
+      BSEC_OUTPUT_IAQ,
+      BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_TEMPERATURE,
+      BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_HUMIDITY,
+  };
+
+  iaqSensor.updateSubscription(sensorList, 7, BSEC_SAMPLE_RATE_LP);
+  if (checkIaqSensorStatus())
+    return -1;
+  return 0;
+}
+
+bool BME680BSECIsConnected()
+{
+  if (checkIaqSensorStatus())
+    return false;
+  return true;
+}
+#endif

WifiControlSensor/EEPROM.h

@@ -23,3 +23,5 @@ typedef struct productConfig_t {
 int EepromSaveConfig(productConfig &config);
 int EepromSaveBootMode(uint8_t bootMode);
 void EepromReadConfig(productConfig &config);
+int EepromSaveBME680State(uint8_t *bsecState);
+int EepromLoadBME680State(uint8_t *bsecState);

WifiControlSensor/EEPROM.ino

@@ -6,6 +6,8 @@
 */
 #include "EEPROM.h" 
 
+#define BME680_BSEC_EEPROM_ORIG (CONFIG_EEPROM_SIZE)
+
 char eeprom[CONFIG_EEPROM_SIZE];
 
 int EepromSaveConfig(productConfig &config) {
@@ -54,7 +56,6 @@ void readConfElement(char** element, int &i) {
     SKETCH_DEBUG_PRINTLN("Looks like there is a configuration issue (too long)");
     **element = '\0';
   }
-
 }
 
 void EepromReadConfig(productConfig &config) {
@@ -101,3 +102,42 @@ void EepromReadConfig(productConfig &config) {
   readConfElement(&config.bssid, i);
 
 }
+
+int EepromSaveBME680State(uint8_t *bsecState)
+{
+  for (uint16_t i = BME680_BSEC_EEPROM_ORIG;
+       i < BME680_BSEC_EEPROM_ORIG + BSEC_MAX_STATE_BLOB_SIZE; i++) {
+    EEPROM.write(i + 1, bsecState[i]);
+  }
+
+  EEPROM.write(BME680_BSEC_EEPROM_ORIG, BSEC_MAX_STATE_BLOB_SIZE);
+  EEPROM.commit();
+
+  return 0;
+}
+
+int EepromLoadBME680State(uint8_t *bsecState)
+{
+  if (EEPROM.read(BME680_BSEC_EEPROM_ORIG) == BSEC_MAX_STATE_BLOB_SIZE) {
+    // Existing state in EEPROM
+    SKETCH_DEBUG_PRINTLN("Reading BME680 state from EEPROM");
+
+    for (uint16_t i = BME680_BSEC_EEPROM_ORIG;
+         i < BME680_BSEC_EEPROM_ORIG + BSEC_MAX_STATE_BLOB_SIZE; i++) {
+      bsecState[i] = EEPROM.read(i + 1);
+    }
+
+    return 0;
+  } else {
+    // Erase the EEPROM with zeroes
+    SKETCH_DEBUG_PRINTLN("Erasing EEPROM for BME680 state");
+
+    for (uint16_t i = BME680_BSEC_EEPROM_ORIG;
+         i < BME680_BSEC_EEPROM_ORIG + BSEC_MAX_STATE_BLOB_SIZE + 1; i++)
+      EEPROM.write(i, 0);
+
+    EEPROM.commit();
+
+    return -1;
+  }
+}

WifiControlSensor/MQTT.h

@@ -16,6 +16,8 @@
 #define BME680_HUMIDITY_FEED_FORMAT    "/feeds/%s/%s/bme680/humidity"
 #define BME680_GAZ_FEED_FORMAT         "/feeds/%s/%s/bme680/gaz"
 #define BME680_ALT_FEED_FORMAT         "/feeds/%s/%s/bme680/alt"
+#define BME680_IAQ_FEED_FORMAT         "/feeds/%s/%s/bme680/iaq"
+#define BME680_IAQ_ACC_FEED_FORMAT     "/feeds/%s/%s/bme680/iaqAcc"
 #ifndef CONFIG_DISABLE_MQTT
 #include "Adafruit_MQTT.h"
 

WifiControlSensor/WebServer.ino

@@ -40,6 +40,9 @@ void WebHandleRoot() {
 #ifdef CONFIG_ENABLE_BME680
               "" + (BME680IsConnected() ? "<h6>BME680</h6>Temperature " + String(bme680T, 2) + "C<br/> Pressure " + String(bme680P, 2) + "hPa<br/> Humidity " + String(bme680H, 2) + "%<br/> Gaz " +  String(bme680G, 2) + "kOhm<br/>" : "BME680 Disconnected"  ) + ""
 #endif
+#ifdef CONFIG_BME680_BSEC_ENABLE
+              "" + (BME680BSECIsConnected() ? "<h6>BME680 BSEC</h6>Temperature " + String(bme680BSECT, 2) + "C<br/> Pressure " + String(bme680BSECP, 2) + "hPa<br/> Humidity " + String(bme680BSECH, 2) + "%<br/> Indoor Air Quality " +  String(bme680BSECIaq, 2) + "/500<br/> IAQ Accuraccy" + String(bme680BSECIaqAcc) + "/3<br/>": "BME680 Disconnected"  ) + ""
+#endif
 #ifdef CONFIG_ENABLE_DRY_SENSOR
               "Dryness " + String((dryness * 100) / 1024) + "%<br/>"
 #endif

WifiControlSensor/WifiControlSensor.ino

@@ -44,6 +44,7 @@
 #include "debug_sketch.h"
 #include "BMP180.h"
 #include "BME680.h"
+#include "BME680_BSEC.h"
 #include "sensor_DHT.h"
 #include "dry_sensor.h"
 #include "MQTT.h"
@@ -63,6 +64,7 @@ extern "C" {
 double temp, pressure;
 float dhtTemp, dhtHumidity;
 float bme680T, bme680P, bme680H, bme680G, bme680A;
+float bme680BSECT, bme680BSECP, bme680BSECH, bme680BSECIaq, bme680BSECIaqAcc;
 int dryness;
 uint8_t mode;
 int reconfig = 0;
@@ -142,7 +144,7 @@ void WifiSetup(productConfig conf) {
         reconfig = 0;
         return;
       }
-      if (connectionTry == 20) {
+      if (connectionTry == 60) {
         SKETCH_DEBUG_PRINTLN("Cannot connect to wifi. Try without BSSID and channel");
         WiFi.begin(conf.ssid, conf.password);
       }
@@ -278,6 +280,9 @@ void setup() {
     if(!BME680Setup()){
       SKETCH_DEBUG_PRINTLN("BME680 init success");
     }
+    if(!BME680BSECSetup()){
+      SKETCH_DEBUG_PRINTLN("BME680 with BSEC init success");
+    }
     WebSetupServer(mode);
   }
 #ifdef CONFIG_ENABLE_POWER_SAVE
@@ -312,7 +317,7 @@ void loop() {
       }
       if (!DryGetMeasure(dryness)) {
         SKETCH_DEBUG_PRINTF("Current dryness %d %%\n", (dryness * 100) / 1024);
-        batchInfo.push_back({dryness, DRY_FEED_FORMAT, 0, 0});
+        batchInfo.push_back({(float)dryness, DRY_FEED_FORMAT, 0, 0});
       }
       if (!BME680GetMeasure(bme680T, bme680P, bme680H, bme680G, bme680A)) {
         SKETCH_DEBUG_PRINT("Current T°C: ");
@@ -332,6 +337,25 @@ void loop() {
         batchInfo.push_back({bme680A, BME680_ALT_FEED_FORMAT, 0, 0});
       }
 
+      if (!BME680BSECGetMeasure(bme680BSECT, bme680BSECP, bme680BSECH, bme680BSECIaq,
+                                bme680BSECIaqAcc)) {
+        SKETCH_DEBUG_PRINT("Current T°C: ");
+        SKETCH_DEBUG_PRINT(bme680BSECT);
+        SKETCH_DEBUG_PRINT(" Pressure hPa: ");
+        SKETCH_DEBUG_PRINT(bme680BSECP);
+        SKETCH_DEBUG_PRINT(" Humidity %: ");
+        SKETCH_DEBUG_PRINT(bme680BSECH);
+        SKETCH_DEBUG_PRINT(" Indoor Air Quality: ");
+        SKETCH_DEBUG_PRINT(bme680BSECIaq);
+        SKETCH_DEBUG_PRINT(" IAQ Accuracy: ");
+        SKETCH_DEBUG_PRINTLN(bme680BSECIaqAcc);
+        batchInfo.push_back({bme680BSECT, BME680_TEMPERATURE_FEED_FORMAT, 0, 0});
+        batchInfo.push_back({bme680BSECP, BME680_PRESSURE_FEED_FORMAT, 0, 0});
+        batchInfo.push_back({bme680BSECH, BME680_HUMIDITY_FEED_FORMAT, 0, 0});
+        batchInfo.push_back({bme680BSECIaq, BME680_IAQ_FEED_FORMAT, 0, 0});
+        batchInfo.push_back({bme680BSECIaqAcc, BME680_IAQ_ACC_FEED_FORMAT, 0, 0});
+      }
+
       if (mode == BOOTMODE_NORMAL)
         MqttBatchPublish(batchInfo, conf.mqttUser, conf.host);
       nbCycle = 0;

WifiControlSensor/config.h

@@ -13,6 +13,14 @@
 #define CONFIG_SAMPLING_PERIODE_MS 60000
 #endif
 
+#if defined(CONFIG_ENABLE_BME680) && defined(CONFIG_BME680_BSEC_ENABLE)
+#error "BME680 and BME680 BSEC cannot be enabled together"
+#endif
+
+#ifndef CONFIG_BME680_BSEC_I2C_ADDR
+#define CONFIG_BME680_BSEC_I2C_ADDR 0x76
+#endif
+
 #if defined(CONFIG_ENABLE_BMP180) && !defined(CONFIG_BMP180_SDA)
 #error "When enabling BMP180, you should configure SDA pin"
 #elif !defined(CONFIG_ENABLE_BMP180)

WifiControlSensor/config_device.h

@@ -14,16 +14,22 @@
 
 // Enable the temperature, pressure, humidity and gaz Sensor BME680 on standard i2c esp8266 pins
 // It use default i2c pin GPIO4(D2): SDA, GPIO5(D1):SCL
-#define CONFIG_ENABLE_BME680
+// Should be powered by 3.3v and sampled every 3sec or 300s (Or you should adapt bsec_config_iaq in BME680_BSEC.ino )
+#define CONFIG_BME680_BSEC_ENABLE
+#define CONFIG_BME680_BSEC_I2C_ADDR 0x77
+
+// Enable the temperature, pressure, humidity and gaz Sensor BME680 on standard i2c esp8266 pins
+// It use default i2c pin GPIO4(D2): SDA, GPIO5(D1):SCL
+//#define CONFIG_ENABLE_BME680
 // Enable the temperatue and pressure Sensor BMP180 
 // (CONFIG_BMP180_SDA and CONFIG_BMP180_SDA should be defined as well)
-#define CONFIG_ENABLE_BMP180
+//#define CONFIG_ENABLE_BMP180
-#define CONFIG_BMP180_SDA SDA //D2
+//#define CONFIG_BMP180_SDA SDA //D2
-#define CONFIG_BMP180_SCL SCL //D1
+//#define CONFIG_BMP180_SCL SCL //D1
-
+//
-#define CONFIG_ENABLE_DHT
+//#define CONFIG_ENABLE_DHT
-#define CONFIG_DHT_PIN 2
+//#define CONFIG_DHT_PIN 2
-#define CONFIG_DHT_TYPE DHT22
+//#define CONFIG_DHT_TYPE DHT22
 
 //#define CONFIG_ENABLE_DRY_SENSOR
 //If the dry sensor is powered by a GPIO, this GPIO could be defined here
@@ -47,7 +53,7 @@
 //#define CONFIG_WEB_DELAY_MS 100
 
 // Get sensors value every X ms
-#define CONFIG_SAMPLING_PERIODE_MS 300000
+#define CONFIG_SAMPLING_PERIODE_MS 3000
 
 // Name of the SSID when in AP mode for configuration
 #define CONFIG_SSID_NAME "ESPConfiguratorBureau"