Create sensor classes that can be shared across variants

src/helpers/sensors/INA3221Sensor.h

@@ -0,0 +1,71 @@
+#pragma once
+
+#include <Mesh.h>
+#include <INA3221.h>
+
+#define TELEM_INA3221_ADDRESS 0x42      // INA3221 3 channel current sensor I2C address
+#define TELEM_INA3221_SHUNT_VALUE 0.100 // most variants will have a 0.1 ohm shunts
+
+#define NUM_CHANNELS 3
+
+static INA3221 INA_3221(TELEM_INA3221_ADDRESS, &Wire);
+
+class INA3221Sensor {
+    bool initialized = false;
+
+public:
+    void begin() {
+        if (INA_3221.begin()) {
+            MESH_DEBUG_PRINTLN("Found INA3221 at address: %02X", INA_3221.getAddress());
+            MESH_DEBUG_PRINTLN("%04X %04X %04X", INA_3221.getDieID(), INA_3221.getManufacturerID(), INA_3221.getConfiguration());
+
+            for(int i = 0; i < 3; i++) {
+            INA_3221.setShuntR(i, TELEM_INA3221_SHUNT_VALUE);
+            }
+            initialized = true;
+        } else {
+            initialized = false;
+            MESH_DEBUG_PRINTLN("INA3221 was not found at I2C address %02X", TELEM_INA3221_ADDRESS);
+        }
+    }
+
+    bool isInitialized() const { return initialized; }
+
+    int numChannels() const { return NUM_CHANNELS; }
+
+    float getVoltage(int channel) const {
+        if (initialized && channel >=0 && channel < NUM_CHANNELS) {
+            return INA_3221.getBusVoltage(channel);
+        }
+        return 0;
+    }
+
+    float getCurrent(int channel) const {
+        if (initialized && channel >=0 && channel < NUM_CHANNELS) {
+            return INA_3221.getCurrent(channel);
+        }
+        return 0;
+    }
+
+    float getPower (int channel) const {
+        if (initialized && channel >=0 && channel < NUM_CHANNELS) {
+            return INA_3221.getPower(channel);
+        }
+        return 0;
+    }
+
+    bool setChannelEnabled(int channel, bool enabled) {
+        if (initialized && channel >=0 && channel < NUM_CHANNELS) {
+            INA_3221.enableChannel(channel);
+            return true;
+        }
+        return false;
+    }
+
+    bool getChannelEnabled(int channel) const {
+        if (initialized && channel >=0 && channel < NUM_CHANNELS) {
+            return INA_3221.getEnableChannel(channel);
+        }
+        return false;
+    }
+};