Add new code for battery validation, updated probe node code added base read me

batteryValidationTest/batteryValidationTest.ino

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+// XAIO-ESP32-C6 Battery Monitor with Averaged ADC Readings
+// Measures the battery voltage via a resistor divider (two 220 kΩ resistors),
+// averages 10 ADC readings, and reports the battery percentage.
+// Battery assumed: single-cell LiPo with 3.0V (0%) to 4.2V (100%).
+
+// ----- CONFIGURATION -----
+const int analogPin = A0;             // ADC pin connected to the resistor divider
+const float adcRefVoltage = 3.3;        // ADC reference voltage (Volts)
+const int adcMaxValue = 4095;           // Maximum ADC value (for 12-bit resolution)
+const float voltageDividerFactor = 2.0; // Divider factor: battery voltage is divided by 2
+
+// Battery voltage range settings (adjust as necessary)
+const float batteryMinVoltage = 3.0;    // Voltage corresponding to 0% battery
+const float batteryMaxVoltage = 4.2;    // Voltage corresponding to 100% battery
+
+const int numSamples = 10;              // Number of ADC samples to average
+
+// ----- SETUP -----
+void setup() {
+  Serial.begin(115200);
+  // If needed, additional ADC calibration or configuration can be added here
+}
+
+// ----- MAIN LOOP -----
+void loop() {
+  long totalADC = 0;
+  
+  // Take numSamples readings
+  for (int i = 0; i < numSamples; i++) {
+    totalADC += analogRead(analogPin);
+    delay(10); // Short delay between samples (adjust as needed)
+  }
+  
+  // Calculate the average ADC value
+  float avgADC = totalADC / (float)numSamples;
+  
+  // Convert the averaged ADC value to the measured voltage at the divider
+  float measuredVoltage = (avgADC / adcMaxValue) * adcRefVoltage;
+  
+  // Calculate the actual battery voltage using the divider factor
+  float batteryVoltage = measuredVoltage * voltageDividerFactor;
+  
+  // Map the battery voltage to a battery percentage using a linear mapping
+  float batteryPercent = ((batteryVoltage - batteryMinVoltage) / (batteryMaxVoltage - batteryMinVoltage)) * 100.0;
+  if (batteryPercent > 100.0) batteryPercent = 100.0;
+  if (batteryPercent < 0.0)   batteryPercent = 0.0;
+  
+  // Print the results to the Serial Monitor
+  Serial.print("Avg ADC Value: ");
+  Serial.print(avgADC, 2);
+  Serial.print(" | Divider Voltage: ");
+  Serial.print(measuredVoltage, 2);
+  Serial.print(" V | Battery Voltage: ");
+  Serial.print(batteryVoltage, 2);
+  Serial.print(" V | Battery Percent: ");
+  Serial.print(batteryPercent, 1);
+  Serial.println("%");
+  
+  // Wait 2 seconds before the next reading
+  delay(2000);
+}