#include <SDI12.h>

#define SERIAL_BAUD 1200
#define DATA_PIN 7
#define POWER_PIN 6
#define WAKE_DELAY 0

SDI12 mySDI12(DATA_PIN);

bool isActive[64] = {0};
uint8_t numSensors = 0;

byte charToDec(char i) {
  // ... (unchanged)
}

char decToChar(byte i) {
  // ... (unchanged)
}

void printInfo(char i) {
  // ... (unchanged)
}

bool getResults(char i, int resultsExpected) {
  // ... (unchanged)
}

bool takeMeasurement(char i, String meas_type = "") {
  // ... (unchanged)
}

boolean checkActive(char i) {
  // ... (unchanged)
}

void setup() {
  Serial.begin(SERIAL_BAUD);
  while (!Serial);

  Serial.println("Opening SDI-12 bus...");
  mySDI12.begin();
  delay(500);

  Serial.println("Timeout value: ");
  Serial.println(mySDI12.TIMEOUT);

  if (POWER_PIN > 0) {
    Serial.println("Powering up sensors, wait...");
    pinMode(POWER_PIN, OUTPUT);
    digitalWrite(POWER_PIN, HIGH);
    delay(15000L);
  }

  Serial.println("Scanning all addresses, please wait...");
  Serial.println("Sensor Address, Protocol Version, Sensor Vendor, Sensor Model, Sensor Version, Sensor ID");

  for (byte i = 0; i < 62; i++) {
    char addr = decToChar(i);
    if (checkActive(addr)) {
      numSensors++;
      isActive[i] = 1;
      printInfo(addr);
      Serial.println();
    }
  }
  Serial.print("Total number of sensors found:  ");
  Serial.println(numSensors);

  if (numSensors == 0) {
    Serial.println("No sensors found, please check connections and restart the Arduino.");
    while (true) { delay(10); }
  }

  Serial.println();
  Serial.println("Time Elapsed (s), Measurement Type, Sensor Address, Est Measurement Time (s), Number Measurements, Real Measurement Time (ms), Measurement 1, Measurement 2, ... etc.");
  Serial.println("-------------------------------------------------------------------------------");
}

void loop() {
  String commands[] = {"C", "D", "T"};
  for (uint8_t a = 0; a < 3; a++) {
    for (byte i = 0; i < 62; i++) {
      char addr = decToChar(i);
      if (isActive[i]) {
        Serial.print(millis());
        Serial.print(", ");
        takeMeasurement(addr, commands[a]);
        Serial.println();
      }
    }
  }

  delay(10000L);
}