#include <Wire.h>

void setup() {
  Serial.begin(115200);
  Wire.begin(PB7, PB6); // SDA, SCL on Blue Pill
  delay(200);
  Serial.println("I2C Scanner starting...");
}

void loop() {
  byte error, address;
  int count = 0;
  for(address = 1; address < 127; address++) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    if (error == 0) {
      Serial.print("I2C device found at 0x");
      Serial.println(address, HEX);
      count++;
    }
  }
  if (count == 0) Serial.println("No I2C devices found");
  delay(3000);
}
#include <Wire.h>
#include <Adafruit_MPU6050.h>
#include <Adafruit_Sensor.h>
#include <OneWire.h>
#include <DallasTemperature.h>

// === Pins ===
#define DS18B20_PIN PB0     // Data line for DS18B20
// MPU6050 SDA -> PB7, SCL -> PB6, INT -> PA0 (optional)

// === Objects ===
OneWire oneWire(DS18B20_PIN);
DallasTemperature ds18b20(&oneWire);
Adafruit_MPU6050 mpu;

void setup() {
  Serial.begin(115200);
  delay(200);

  // Start I2C on Blue Pill explicit pins
  Wire.begin(PB7, PB6); // SDA, SCL

  // Start DS18B20
  ds18b20.begin();

  // Start MPU6050
  if (!mpu.begin()) {
    Serial.println("Failed to find MPU6050 chip!");
    while (1) { delay(10); }
  }
  Serial.println("MPU6050 found");

  // Configure MPU settings (tweak to your needs)
  mpu.setAccelerometerRange(MPU6050_RANGE_2_G);
  mpu.setGyroRange(MPU6050_RANGE_250_DEG);
  mpu.setFilterBandwidth(MPU6050_BAND_21_HZ);

  delay(100);
}

void loop() {
  // --- DS18B20 ---
  ds18b20.requestTemperatures();
  float tC = ds18b20.getTempCByIndex(0); // first sensor on bus
  Serial.print("DS18B20 Temp: ");
  Serial.print(tC);
  Serial.println(" °C");

  // --- MPU6050 ---
  sensors_event_t a, g, temp_sensor;
  mpu.getEvent(&a, &g, &temp_sensor); // acceleration, gyro, temp

  Serial.print("Accel (m/s^2): ");
  Serial.print(a.acceleration.x); Serial.print(", ");
  Serial.print(a.acceleration.y); Serial.print(", ");
  Serial.println(a.acceleration.z);

  Serial.print("Gyro (rad/s): ");
  Serial.print(g.gyro.x); Serial.print(", ");
  Serial.print(g.gyro.y); Serial.print(", ");
  Serial.println(g.gyro.z);

  Serial.println("-------------------------");
  delay(1000);
}