实现  HMC5883L 电子罗盘 简单的数据读取实验

 

实验效果

本实验，简单显示从HMC5883L 读取到的数据

 

BOM表

Arduino Uno  *  1

HMC5883L（gy-273） * 1

跳线若干

 

接线图

Arduino Uno            <---->   HMC5883L

5v                               <---->             VCC

GND                          <---->             GND

A5(SCL)                    <---->             SCL

A4(SDA)                    <---->             SDA                                               

 

开源程序

下载库文件   https://github.com/jarzebski/Arduino-HMC5883L

把文件夹保存在libraries 文件夹里

 

打开Arduino IDE --> 文件  --> 示例 --> Arduino-HMC5883L-master --> HMC5883L_simple   

就会见到如下代码:

 

/*HMC5883L Triple Axis Digital Compass. Simple Example.Read more: http://www.jarzebski.pl/arduino/czujniki-i-sensory/3-osiowy-magnetometr-hmc5883l.htmlGIT: https://github.com/jarzebski/Arduino-HMC5883LWeb: http://www.jarzebski.pl(c) 2014 by Korneliusz Jarzebski
*/#include <Wire.h>
#include <HMC5883L.h>HMC5883L compass;void setup()
{Serial.begin(9600);// Initialize HMC5883LSerial.println("Initialize HMC5883L");while (!compass.begin()){Serial.println("Could not find a valid HMC5883L sensor, check wiring!");delay(500);}// Set measurement range// +/- 0.88 Ga: HMC5883L_RANGE_0_88GA// +/- 1.30 Ga: HMC5883L_RANGE_1_3GA (default)// +/- 1.90 Ga: HMC5883L_RANGE_1_9GA// +/- 2.50 Ga: HMC5883L_RANGE_2_5GA// +/- 4.00 Ga: HMC5883L_RANGE_4GA// +/- 4.70 Ga: HMC5883L_RANGE_4_7GA// +/- 5.60 Ga: HMC5883L_RANGE_5_6GA// +/- 8.10 Ga: HMC5883L_RANGE_8_1GAcompass.setRange(HMC5883L_RANGE_1_3GA);// Set measurement mode// Idle mode:              HMC5883L_IDLE// Single-Measurement:     HMC5883L_SINGLE// Continuous-Measurement: HMC5883L_CONTINOUS (default)compass.setMeasurementMode(HMC5883L_CONTINOUS);// Set data rate//  0.75Hz: HMC5883L_DATARATE_0_75HZ//  1.50Hz: HMC5883L_DATARATE_1_5HZ//  3.00Hz: HMC5883L_DATARATE_3HZ//  7.50Hz: HMC5883L_DATARATE_7_50HZ// 15.00Hz: HMC5883L_DATARATE_15HZ (default)// 30.00Hz: HMC5883L_DATARATE_30HZ// 75.00Hz: HMC5883L_DATARATE_75HZcompass.setDataRate(HMC5883L_DATARATE_15HZ);// Set number of samples averaged// 1 sample:  HMC5883L_SAMPLES_1 (default)// 2 samples: HMC5883L_SAMPLES_2// 4 samples: HMC5883L_SAMPLES_4// 8 samples: HMC5883L_SAMPLES_8compass.setSamples(HMC5883L_SAMPLES_1);// Check settingscheckSettings();
}void checkSettings()
{Serial.print("Selected range: ");switch (compass.getRange()){case HMC5883L_RANGE_0_88GA: Serial.println("0.88 Ga"); break;case HMC5883L_RANGE_1_3GA:  Serial.println("1.3 Ga"); break;case HMC5883L_RANGE_1_9GA:  Serial.println("1.9 Ga"); break;case HMC5883L_RANGE_2_5GA:  Serial.println("2.5 Ga"); break;case HMC5883L_RANGE_4GA:    Serial.println("4 Ga"); break;case HMC5883L_RANGE_4_7GA:  Serial.println("4.7 Ga"); break;case HMC5883L_RANGE_5_6GA:  Serial.println("5.6 Ga"); break;case HMC5883L_RANGE_8_1GA:  Serial.println("8.1 Ga"); break;default: Serial.println("Bad range!");}Serial.print("Selected Measurement Mode: ");switch (compass.getMeasurementMode()){  case HMC5883L_IDLE: Serial.println("Idle mode"); break;case HMC5883L_SINGLE:  Serial.println("Single-Measurement"); break;case HMC5883L_CONTINOUS:  Serial.println("Continuous-Measurement"); break;default: Serial.println("Bad mode!");}Serial.print("Selected Data Rate: ");switch (compass.getDataRate()){  case HMC5883L_DATARATE_0_75_HZ: Serial.println("0.75 Hz"); break;case HMC5883L_DATARATE_1_5HZ:  Serial.println("1.5 Hz"); break;case HMC5883L_DATARATE_3HZ:  Serial.println("3 Hz"); break;case HMC5883L_DATARATE_7_5HZ: Serial.println("7.5 Hz"); break;case HMC5883L_DATARATE_15HZ:  Serial.println("15 Hz"); break;case HMC5883L_DATARATE_30HZ: Serial.println("30 Hz"); break;case HMC5883L_DATARATE_75HZ:  Serial.println("75 Hz"); break;default: Serial.println("Bad data rate!");}Serial.print("Selected number of samples: ");switch (compass.getSamples()){  case HMC5883L_SAMPLES_1: Serial.println("1"); break;case HMC5883L_SAMPLES_2: Serial.println("2"); break;case HMC5883L_SAMPLES_4: Serial.println("4"); break;case HMC5883L_SAMPLES_8: Serial.println("8"); break;default: Serial.println("Bad number of samples!");}}void loop()
{Vector raw = compass.readRaw();Vector norm = compass.readNormalize();Serial.print(" Xraw = ");Serial.print(raw.XAxis);Serial.print(" Yraw = ");Serial.print(raw.YAxis);Serial.print(" Zraw = ");Serial.print(raw.ZAxis);Serial.print(" Xnorm = ");Serial.print(norm.XAxis);Serial.print(" Ynorm = ");Serial.print(norm.YAxis);Serial.print(" ZNorm = ");Serial.print(norm.ZAxis);Serial.println();  delay(100);
}