BME dynamic pressure height correction

README.md

@@ -59,6 +59,7 @@ ____________________________________________________
 ____________________________________________________
 ## Timeline (Versions):
 
+- 2024.06.07 Dynamic Height Correction of the BME280 Pressure readings.
 - 2024.05.21 WEMOS ESP32 Battery Holder + LoRa SX1278 + GPS Module support added.
 - 2024.05.16 all boards now work with Radiolib (LoRa) library from @jgromes.
 - 2024.05.13 BME modules will be autodetected (I2C Address and if it is BME280/BMP280/BME680).

data/tracker_config.json

@@ -80,7 +80,6 @@
 	},
 	"bme": {
 		"active": false,
-		"heightCorrection": 0,
 		"temperatureCorrection": 0.0,
 		"sendTelemetry": false
 	},

src/bme_utils.cpp

@@ -1,13 +1,15 @@
+#include <TinyGPS++.h>
+#include <logger.h>
 #include "bme_utils.h"
 #include "configuration.h"
 #include "display.h"
-#include <logger.h>
 
 #define SEALEVELPRESSURE_HPA (1013.25)
 #define CORRECTION_FACTOR (8.2296)      // for meters
 
 extern Configuration    Config;
 extern logging::Logger  logger;
+extern TinyGPSPlus      gps;
 
 float newHum, newTemp, newPress, newGas;
 
@@ -254,7 +256,7 @@ namespace BME_Utils {
             } else if (wxModuleType == 2) {
                 humStr  = "..";
             }
-            presStr = generatePresString(newPress + (Config.bme.heightCorrection/CORRECTION_FACTOR), type);
+            presStr = generatePresString(newPress + (gps.altitude.meters()/CORRECTION_FACTOR), type);
             if (type == 1) {
                 if (wxModuleType == 1 || wxModuleType == 3) {
                     wx = tempStr;

src/configuration.cpp

@@ -54,7 +54,6 @@ void Configuration::readFile(fs::FS &fs, const char *fileName) {
     winlink.password              = data["winlink"]["password"].as<String>();
 
     bme.active                    = data["bme"]["active"].as<bool>();
-    bme.heightCorrection          = data["bme"]["heightCorrection"].as<int>();
     bme.temperatureCorrection     = data["bme"]["temperatureCorrection"].as<float>();
     bme.sendTelemetry             = data["bme"]["sendTelemetry"].as<bool>();
 

src/configuration.h

@@ -39,7 +39,6 @@ public:
 class BME {
 public:
     bool    active;
-    int     heightCorrection;
     float   temperatureCorrection;
     bool    sendTelemetry;
 };