Arduino: modular structure

arduino/main/main.ino

@@ -1,35 +1,19 @@
-// Vehicle Voltage Monitor
-// Reads 12V-14.4V battery via voltage divider on A0
-// Outputs to Serial for PC monitoring
+// Smart Serow - Main
+// Motorcycle telemetry hub
 
-// Pin definitions
-const int PIN_VBAT = A0;  // Vehicle voltage input (via divider)
-
-// Voltage divider constants
-// Divider: 100k upper (to Vin), 47k lower (to GND)
-// Vout = Vin * (47k / (100k + 47k)) = Vin * 0.3197
-// So Vin = Vout / 0.3197
-// At 12V: ADC sees 3.84V | At 14.4V: ADC sees 4.60V
-const float DIVIDER_RATIO = 47.0 / (100.0 + 47.0);  // ~0.3197
-const float ADC_REF = 5.0;
-const int ADC_MAX = 1023;
+#include "voltage.h"
 
 void setup() {
   Serial.begin(9600);
   pinMode(LED_BUILTIN, OUTPUT);
+
+  voltage_init();
 }
 
 void loop() {
-  // Read and calculate voltage
-  int rawAdc = analogRead(PIN_VBAT);
-  float vDivider = (rawAdc / (float)ADC_MAX) * ADC_REF;
-  float vBattery = vDivider / DIVIDER_RATIO;
-
-  // Output to serial
-  Serial.print("ADC: ");
-  Serial.print(rawAdc);
-  Serial.print(" | V_bat: ");
-  Serial.print(vBattery, 2);
+  // Report battery voltage
+  Serial.print("V_bat: ");
+  Serial.print(voltage_read(), 2);
   Serial.println("V");
 
   // Heartbeat blink