BME280 integration (PR #309)

README.md

@@ -49,7 +49,7 @@ Depending on board hardware following features are supported:
 - Silicon unique ID
 - Battery voltage monitoring
 - GPS (Generic serial NMEA, or Quectel L76 I2C)
-- Environmental sensor (Bosch BME680 I2C)
+- Environmental sensor (Bosch BME280/BME680 I2C)
 - Real Time Clock (Maxim DS3231 I2C)
 - IF482 (serial) and DCF77 (gpio) time telegram generator
 

include/bme280.h

@@ -1,17 +0,0 @@
-#ifndef _BME280_H
-#define _BME280_H
-
-#include "globals.h"
-#include <Wire.h>
-#include <Adafruit_Sensor.h>
-#include <Adafruit_BME280.h>
-#include "../lib/Bosch-BSEC/src/bsec.h"
-
-extern bmeStatus_t
-    bme_status; // Make struct for storing gps data globally available
-extern TaskHandle_t Bme280Task;
-
-int bme280_init();
-void bme280_loop(void *pvParameters);
-
-#endif

include/bmesensor.h

@@ -1,9 +1,15 @@
-#ifndef _BME680MEMS_H
+#ifndef _BMESENSOR_H
-#define _BME680MEMS_H
+#define _BMESENSOR_H
 
 #include "globals.h"
 #include <Wire.h>
+
+#ifdef HAS_BME680
 #include "../lib/Bosch-BSEC/src/bsec.h"
+#elif defined HAS_BME280
+#include <Adafruit_Sensor.h>
+#include <Adafruit_BME280.h>
+#endif
 
 extern bmeStatus_t
     bme_status; // Make struct for storing gps data globally available

include/cyclic.h

@@ -7,12 +7,8 @@
 #include "spislave.h"
 #include <lmic.h>
 
-#ifdef HAS_BME680
+#if (HAS_BME)
-#include "bme680mems.h"
+#include "bmesensor.h"
-#endif
-
-#ifdef HAS_BME280
-#include "bme280.h"
 #endif
 
 extern Ticker housekeeper;

include/globals.h

@@ -151,12 +151,8 @@ extern time_t userUTCTime;
 #include "sensor.h"
 #endif
 
-#ifdef HAS_BME680
+#if (HAS_BME)
-#include "bme680mems.h"
+#include "bmesensor.h"
-#endif
-
-#ifdef HAS_BME280
-#include "bme280.h"
 #endif
 
 #endif

platformio.ini

@@ -6,7 +6,7 @@
 
 ; ---> SELECT TARGET PLATFORM HERE! <---
 [platformio]
-;env_default = generic
+env_default = generic
 ;env_default = ebox
 ;env_default = eboxtube
 ;env_default = heltec
@@ -14,7 +14,7 @@
 ;env_default = ttgov1
 ;env_default = ttgov2
 ;env_default = ttgov21old
-env_default = ttgov21new
+;env_default = ttgov21new
 ;env_default = ttgobeam
 ;env_default = ttgofox
 ;env_default = lopy
@@ -53,6 +53,9 @@ lib_deps_gps =
     TinyGPSPlus@>=1.0.2
 lib_deps_rtc =
     RTC@^2.3.0
+lib_deps_sensors =
+    Adafruit Unified Sensor@^1.0.3
+    Adafruit BME280 Library@1.0.8
 lib_deps_basic =
     ArduinoJson@^5.13.1
     Timezone@^1.2.2
@@ -201,7 +204,7 @@ lib_deps =
     ${common.lib_deps_lora}
     ${common.lib_deps_display}
 build_flags =
-    ${common.build_flags_all}
+    ${common.build_flags_basic}
 upload_protocol = ${common.upload_protocol}
 extra_scripts = ${common.extra_scripts}
 monitor_speed = ${common.monitor_speed}

src/bme280.cpp

@@ -1,63 +0,0 @@
-#ifdef HAS_BME280
-
-#include "bme280.h"
-
-// Local logging tag
-static const char TAG[] = __FILE__;
-
-bmeStatus_t bme_status;
-TaskHandle_t Bme280Task;
-
-#define SEALEVELPRESSURE_HPA (1013.25)
-
-Adafruit_BME280 bme; // I2C
-//Adafruit_BME280 bme(BME_CS); // hardware SPI
-//Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK); // software SPI
-
-// initialize BME280 sensor
-int bme280_init(void) {
-
-  bool status;
-  // return = 0 -> error / return = 1 -> success
-
-  // block i2c bus access
-  if (I2C_MUTEX_LOCK()) {
-    status = bme.begin(BME280_ADDR);  
-    if (!status) {
-        ESP_LOGE(TAG, "BME280 sensor not found");
-        goto error;
-    }
-    ESP_LOGI(TAG, "BME280 sensor found and initialized");
-  } else {
-    ESP_LOGE(TAG, "I2c bus busy - BME280 initialization error");
-    goto error;
-  }
-
-  I2C_MUTEX_UNLOCK(); // release i2c bus access
-  return 1;
-
-error:
-  I2C_MUTEX_UNLOCK(); // release i2c bus access
-  return 0;
-
-} // bme_init()
-
-// loop function which reads and processes data based on sensor settings
-void bme280_loop(void *pvParameters) {
-#ifdef HAS_BME280
-  while (1) {
-    if (I2C_MUTEX_LOCK()) {
-      bme_status.temperature = bme.readTemperature();
-      bme_status.pressure = (bme.readPressure() / 100.0); // conversion Pa -> hPa
-      // bme.readAltitude(SEALEVELPRESSURE_HPA);
-      bme_status.humidity = bme.readHumidity();
-      I2C_MUTEX_UNLOCK();
-    }
-  }
-#endif
-  ESP_LOGE(TAG, "BME task ended");
-  vTaskDelete(Bme280Task); // should never be reached
-
-} // bme_loop()
-
-#endif // HAS_BME280

src/bmesensor.cpp

@@ -1,6 +1,6 @@
-#ifdef HAS_BME680
+#if (HAS_BME)
 
-#include "bme680mems.h"
+#include "bmesensor.h"
 
 // Local logging tag
 static const char TAG[] = __FILE__;
@@ -8,6 +8,9 @@ static const char TAG[] = __FILE__;
 bmeStatus_t bme_status;
 TaskHandle_t BmeTask;
 
+#define SEALEVELPRESSURE_HPA (1013.25)
+
+#ifdef HAS_BME680
 bsec_virtual_sensor_t sensorList[10] = {
     BSEC_OUTPUT_RAW_TEMPERATURE,
     BSEC_OUTPUT_RAW_PRESSURE,
@@ -26,11 +29,20 @@ uint16_t stateUpdateCounter = 0;
 
 Bsec iaqSensor;
 
+#elif defined HAS_BME280
+
+Adafruit_BME280 bme; // I2C
+                     // Adafruit_BME280 bme(BME_CS); // hardware SPI
+// Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK); // software SPI
+
+#endif
+
 // initialize BME680 sensor
 int bme_init(void) {
 
   // return = 0 -> error / return = 1 -> success
 
+#ifdef HAS_BME680
   // block i2c bus access
   if (I2C_MUTEX_LOCK()) {
 
@@ -66,6 +78,26 @@ int bme_init(void) {
     goto error;
   }
 
+#elif defined HAS_BME280
+
+  bool status;
+  // return = 0 -> error / return = 1 -> success
+
+  // block i2c bus access
+  if (I2C_MUTEX_LOCK()) {
+    status = bme.begin(BME280_ADDR);
+    if (!status) {
+      ESP_LOGE(TAG, "BME280 sensor not found");
+      goto error;
+    }
+    ESP_LOGI(TAG, "BME280 sensor found and initialized");
+  } else {
+    ESP_LOGE(TAG, "I2c bus busy - BME280 initialization error");
+    goto error;
+  }
+
+#endif
+
   I2C_MUTEX_UNLOCK(); // release i2c bus access
   return 1;
 
@@ -75,6 +107,8 @@ error:
 
 } // bme_init()
 
+#ifdef HAS_BME680
+
 // Helper function definitions
 int checkIaqSensorStatus(void) {
   int rslt = 1; // true = 1 = no error, false = 0 = error
@@ -97,6 +131,7 @@ int checkIaqSensorStatus(void) {
 
   return rslt;
 } // checkIaqSensorStatus()
+#endif
 
 // loop function which reads and processes data based on sensor settings
 void bme_loop(void *pvParameters) {
@@ -122,12 +157,24 @@ void bme_loop(void *pvParameters) {
       I2C_MUTEX_UNLOCK();
     }
   }
+#elif defined HAS_BME280
+  while (1) {
+    if (I2C_MUTEX_LOCK()) {
+      bme_status.temperature = bme.readTemperature();
+      bme_status.pressure =
+          (bme.readPressure() / 100.0); // conversion Pa -> hPa
+      // bme.readAltitude(SEALEVELPRESSURE_HPA);
+      bme_status.humidity = bme.readHumidity();
+      I2C_MUTEX_UNLOCK();
+    }
+  }
 #endif
   ESP_LOGE(TAG, "BME task ended");
   vTaskDelete(BmeTask); // should never be reached
 
 } // bme_loop()
 
+#ifdef HAS_BME680
 void loadState(void) {
   if (cfg.bsecstate[BSEC_MAX_STATE_BLOB_SIZE] == BSEC_MAX_STATE_BLOB_SIZE) {
     // Existing state in NVS stored
@@ -167,5 +214,6 @@ void updateState(void) {
     saveConfig();
   }
 }
+#endif
 
-#endif // HAS_BME680
+#endif // HAS_BME

src/cyclic.cpp

@@ -36,14 +36,10 @@ void doHousekeeping() {
   ESP_LOGD(TAG, "Gpsloop %d bytes left | Taskstate = %d",
            uxTaskGetStackHighWaterMark(GpsTask), eTaskGetState(GpsTask));
 #endif
-#ifdef HAS_BME680
+#if (HAS_BME)
   ESP_LOGD(TAG, "Bmeloop %d bytes left | Taskstate = %d",
            uxTaskGetStackHighWaterMark(BmeTask), eTaskGetState(BmeTask));
 #endif
-#ifdef HAS_BME280
-  ESP_LOGD(TAG, "Bme280loop %d bytes left | Taskstate = %d",
-           uxTaskGetStackHighWaterMark(Bme280Task), eTaskGetState(Bme280Task));
-#endif
 #ifdef HAS_DCF77
   ESP_LOGD(TAG, "Clockloop %d bytes left | Taskstate = %d",
            uxTaskGetStackHighWaterMark(ClockTask), eTaskGetState(ClockTask));

src/hal/generic.h

@@ -21,6 +21,9 @@
 #define HAS_BME 1 // Enable BME sensors in general
 #define HAS_BME680 GPIO_NUM_21, GPIO_NUM_22 // SDA, SCL
 #define BME680_ADDR BME680_I2C_ADDR_PRIMARY // connect SDIO of BME680 to GND
+// BME280 sensor on I2C bus
+//#define HAS_BME 1 // Enable BME sensors in general
+//#define HAS_BME280 GPIO_NUM_21, GPIO_NUM_22 // SDA, SCL
 
 // user defined sensors
 //#define HAS_SENSORS 1 // comment out if device has user defined sensors

src/hal/ttgov21new.h

@@ -14,10 +14,9 @@
 #define CFG_sx1276_radio 1 // HPD13A LoRa SoC
 
 // enable only if device has these sensors, otherwise comment these lines
-// BME680 sensor on I2C bus
+// BME280 sensor on I2C bus
-#define HAS_BME 1 // Enable BME sensors in general
+//#define HAS_BME 1 // Enable BME sensors in general
-#define HAS_BME280 GPIO_NUM_21, GPIO_NUM_22 // SDA, SCL
+//#define HAS_BME280 GPIO_NUM_21, GPIO_NUM_22 // SDA, SCL
-#define BME280_ADDR BME680_I2C_ADDR_PRIMARY // connect SDIO of BME680 to GND
 
 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C
 #define HAS_LED (25) // green on board LED

src/main.cpp

@@ -358,11 +358,15 @@ void setup() {
                           &irqHandlerTask, // task handle
                           1);              // CPU core
 
-// initialize bme680
+// initialize BME sensor (BME280/BME680)
+#if (HAS_BME)
 #ifdef HAS_BME680
+  strcat_P(features, " BME680");
+#elif defined HAS_BME280
   strcat_P(features, " BME280");
+#endif
   if (bme_init()) {
-    ESP_LOGI(TAG, "Starting BME280 sensor...");
+    ESP_LOGI(TAG, "Starting BME sensor...");
     xTaskCreatePinnedToCore(bme_loop,  // task function
                             "bmeloop", // name of task
                             2048,      // stack size of task
@@ -373,21 +377,6 @@ void setup() {
   }
 #endif
 
-// initialize BME280
-#ifdef HAS_BME280
-  strcat_P(features, " BME280");
-  if (bme280_init()) {
-    ESP_LOGI(TAG, "Starting BME280 sensor...");
-    xTaskCreatePinnedToCore(bme280_loop,  // task function
-                            "bme280loop", // name of task
-                            2048,      // stack size of task
-                            (void *)1, // parameter of the task
-                            1,         // priority of the task
-                            &Bme280Task,  // task handle
-                            1);        // CPU core
-  }
-#endif
-
   // starting timers and interrupts
   assert(irqHandlerTask != NULL); // has interrupt handler task started?
   ESP_LOGI(TAG, "Starting Timers...");

src/rcommand.cpp

@@ -262,12 +262,12 @@ void get_gps(uint8_t val[]) {
 
 void get_bme(uint8_t val[]) {
   ESP_LOGI(TAG, "Remote command: get bme680 sensor data");
-#ifdef HAS_BME680
+#if (HAS_BME)
   payload.reset();
   payload.addBME(bme_status);
   SendPayload(BMEPORT, prio_high);
 #else
-  ESP_LOGW(TAG, "BME680 sensor not supported");
+  ESP_LOGW(TAG, "BME sensor not supported");
 #endif
 };