MPU6050初始化失败

1223386926

/* Get all possible data from MPU6050
 * Accelerometer values are given as multiple of the gravity [1g = 9.81 m/s²]
 * Gyro values are given in deg/s
 * Angles are given in degrees
 * Note that X and Y are tilt angles and not pitch/roll.
 *
 * License: MIT
 */

#include "Wire.h"
#include <MPU6050_light.h>

MPU6050 mpu(Wire);

unsigned long timer = 0;

void setup() {
  Serial.begin(115200);
  Wire.begin(18, 19);
  
  byte status = mpu.begin();
  Serial.print(F("MPU6050 status: "));
  Serial.println(status);
  while(status!=0){
    Serial.println("Initial MPU6050 error!");
    delay(1000);
  } // stop everything if could not connect to MPU6050
  
  Serial.println(F("Calculating offsets, do not move MPU6050"));
  delay(1000);
  mpu.calcOffsets(true,true); // gyro and accelero
  Serial.println("Done!\n");
  
}

void loop() {
  mpu.update();

  if(millis() - timer > 1000){ // print data every second
    Serial.print(F("TEMPERATURE: "));Serial.println(mpu.getTemp());
    Serial.print(F("ACCELERO  X: "));Serial.print(mpu.getAccX());
    Serial.print("\tY: ");Serial.print(mpu.getAccY());
    Serial.print("\tZ: ");Serial.println(mpu.getAccZ());
  
    Serial.print(F("GYRO      X: "));Serial.print(mpu.getGyroX());
    Serial.print("\tY: ");Serial.print(mpu.getGyroY());
    Serial.print("\tZ: ");Serial.println(mpu.getGyroZ());
  
    Serial.print(F("ACC ANGLE X: "));Serial.print(mpu.getAccAngleX());
    Serial.print("\tY: ");Serial.println(mpu.getAccAngleY());
    
    Serial.print(F("ANGLE     X: "));Serial.print(mpu.getAngleX());
    Serial.print("\tY: ");Serial.print(mpu.getAngleY());
    Serial.print("\tZ: ");Serial.println(mpu.getAngleZ());
    Serial.println(F("=====================================================\n"));
    timer = millis();
  }
}

1223386926

需要修改MPU6050默认地址，文件MPU6050_light.h
// #define MPU6050_ADDR 0x68
#define MPU6050_ADDR 0x6a

1223386926

@1223386926 在 MPU6050初始化失败中说：

需要修改MPU6050默认地址，文件MPU6050_light.h
// #define MPU6050_ADDR 0x68
#define MPU6050_ADDR 0x6a

检测地址

#include "Wire.h"
#include <MPU6050_light.h>

void setup() {
  Serial.begin(115200);
  Wire.begin(18, 19); // 使用您的引脚
  delay(1000);
  
  Serial.println("I2C Scanner Starting...");
}

void loop() {
  byte error, address;
  int nDevices = 0;

  Serial.println("Scanning I2C bus...");
  
  for(address = 1; address < 127; address++ ) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    
    if (error == 0) {
      Serial.print("I2C device found at address 0x");
      if (address < 16) Serial.print("0");
      Serial.print(address, HEX);
      Serial.println(" !");
      
      if (address == 0x68 || address == 0x69) {
        Serial.println(">>> This is likely an MPU6050! <<<");
      }
      nDevices++;
    }
  }
  
  if (nDevices == 0) {
    Serial.println("No I2C devices found!");
  } else {
    Serial.println("Scan complete.");
  }
  Serial.println("-------------------");
  delay(3000);
}

1223386926

@1223386926 在 MPU6050初始化失败中说：

需要修改MPU6050默认地址，文件MPU6050_light.h
// #define MPU6050_ADDR 0x68
#define MPU6050_ADDR 0x6a

检测地址

#include "Wire.h"
#include <MPU6050_light.h>

void setup() {
  Serial.begin(115200);
  Wire.begin(18, 19); // 使用您的引脚
  delay(1000);
  
  Serial.println("I2C Scanner Starting...");
}

void loop() {
  byte error, address;
  int nDevices = 0;

  Serial.println("Scanning I2C bus...");
  
  for(address = 1; address < 127; address++ ) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    
    if (error == 0) {
      Serial.print("I2C device found at address 0x");
      if (address < 16) Serial.print("0");
      Serial.print(address, HEX);
      Serial.println(" !");
      
      if (address == 0x68 || address == 0x69) {
        Serial.println(">>> This is likely an MPU6050! <<<");
      }
      nDevices++;
    }
  }
  
  if (nDevices == 0) {
    Serial.println("No I2C devices found!");
  } else {
    Serial.println("Scan complete.");
  }
  Serial.println("-------------------");
  delay(3000);
}

1223386926

@1223386926 改为0x6A虽然不会报错，但无法读取有效的数值。根本原因在于用错了库，不应该使用https://github.com/rfetick/MPU6050_light.git，而是应该https://github.com/fishros/MPU6050_light.git。
替代文字。
换完之后，就可以按教程中的代码读取数值：