Arduino-UNO MPU9250/6500

接线

MPU9250 --->  UNO

vcc -> 5v

GND - > GND

SCL -> A5

SDA -> A4

I2C地址扫描

#include <Wire.h>
 
 
void setup()
{
  Wire.begin();
 
  Serial.begin(9600);
  while (!Serial);             // Leonardo: wait for serial monitor
  Serial.println("I2C Scanner");
}
 
 
void loop()
{
  byte error, address;
  int nDevices;
 
  Serial.println("Scanning...");
 
  nDevices = 0;
  for(address = 1; address < 127; address++ )
  {
    // The i2c_scanner uses the return value of
    // the Write.endTransmisstion to see if
    // a device did acknowledge to the 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("  !");
 
      nDevices++;
    }
    else if (error==4)
    {
      Serial.print("Unknown error at address 0x");
      if (address<16)
        Serial.print("0");
      Serial.println(address,HEX);
    }    
  }
  if (nDevices == 0)
    Serial.println("No I2C devices found");
  else
    Serial.println("done");
 
  delay(5000);           // wait 5 seconds for next scan
} 

读取参数

安装库：

根据端口扫描结果，设置端口地址：

#include "MPU9250.h"

// an MPU9250 object with the MPU-9250 sensor on I2C bus 0 with address 0x68
MPU9250 IMU(Wire,0x68);
int status;

void setup() {
  // serial to display data
  Serial.begin(115200);
  while(!Serial) {}

  // start communication with IMU 
  status = IMU.begin();
  if (status < 0) {
    Serial.println("IMU initialization unsuccessful");
    Serial.println("Check IMU wiring or try cycling power");
    Serial.print("Status: ");
    Serial.println(status);
    while(1) {}
  }
}

void loop() {
  // read the sensor
  IMU.readSensor();
  // display the data

  //加速度
  Serial.print(IMU.getAccelX_mss(),6);
  Serial.print("	");
  Serial.print(IMU.getAccelY_mss(),6);
  Serial.print("	");
  Serial.print(IMU.getAccelZ_mss(),6);
  Serial.print("	");

  //陀螺仪
  Serial.print(IMU.getGyroX_rads(),6);
  Serial.print("	");
  Serial.print(IMU.getGyroY_rads(),6);
  Serial.print("	");
  Serial.print(IMU.getGyroZ_rads(),6);
  Serial.print("	");

  //磁力计
  Serial.print(IMU.getMagX_uT(),6);
  Serial.print("	");
  Serial.print(IMU.getMagY_uT(),6);
  Serial.print("	");
  Serial.print(IMU.getMagZ_uT(),6);
  Serial.print("	");
  Serial.println(IMU.getTemperature_C(),6);
  delay(100);
}