283 Add support of INA3221 to Promicro telemetry

src/helpers/SensorManager.h

@@ -7,6 +7,12 @@
 
 #define TELEM_CHANNEL_SELF   1   // LPP data channel for 'self' device
 
+#define TELEM_INA3221_ADDRESS 0x40      // INA3221 3 channel current, voltage, power sensor I2C address
+#define TELEM_INA3221_SHUNT_VALUE 0.100 // most variants will have a 0.1 ohm shunts
+#define TELEM_INA3221_SETTING_CH1 "INA3221 Channel 1"
+#define TELEM_INA3221_SETTING_CH2 "INA3221 Channel 2"
+#define TELEM_INA3221_SETTING_CH3 "INA3221 Channel 3"
+
 class SensorManager {
 public:
   double node_lat, node_lon;  // modify these, if you want to affect Advert location

src/helpers/sensors/SensorSettingsManager.h

@@ -0,0 +1,72 @@
+#include <vector>
+#include <string>
+
+class SensorSettingsManager {
+  private:
+    std::vector<std::pair<std::string, bool>> settings;
+
+  public:
+
+    int getSettingCount() const {
+        return static_cast<int>(settings.size());
+    };
+
+    bool addSetting(const std::string& name, bool defaultValue = false){
+        for (const auto& setting : settings) {
+            if (setting.first == name) {
+                return false;
+            }
+        }
+        settings.emplace_back(name, defaultValue);
+        return true; 
+    };
+
+    bool removeSetting(const std::string& name) {
+        for (auto it = settings.begin(); it != settings.end(); ++it) {
+            if (it->first == name) {
+                settings.erase(it);
+                return true;
+            }
+        }
+        return false;
+    };
+
+    const char* getSettingValue(const std::string& name) const{
+        for (const auto& setting : settings) {
+            if (setting.first == name) {
+                return setting.second ? "true" : "false";
+            }
+        }
+        return NULL;
+    };
+    
+    const char* getSettingValue(int index) const {
+        if (index >= 0 && index < getSettingCount()) {
+            return settings[index].second ? "true" : "false";
+        }
+        return NULL;
+    };
+
+    bool setSettingValue(const std::string& name, const std::string& value) {
+        for (auto& setting : settings) {
+            if (setting.first == name) {
+                // Convert value to boolean
+                if (value == "1" || value == "true") {
+                    setting.second = true;
+                } else {
+                    setting.second = false;
+                }
+                return true;
+            }
+        }
+        return false;
+    }
+
+    const char* getSettingName(int index) const {
+        if (index >= 0 && index < getSettingCount()){
+            return settings[index].first.c_str();
+        }
+        return NULL;
+    };
+
+};