jarzebski/arduino-hmc5883l

HMC5883L Triple Axis Digital Compass Arduino Library

arduino-hmc5883l's Issues

m_pi

Hello dear
what is M_PI ?and the value that M_PI can get?
tnx <3

No data printed in serial monitor while using esp32

My first question is does this library work with ESP-32? I am using the calibrate.ino sketch and it compiles without any errors. But when I look at my serial monitor, nothing prints. I disconnected the pins to my sensor, and it showed - "No I2c device found" as it should. ( There's only a delay function in the code, I added the serial. print thing) But when I again connect those pins, I get nothing. Can anyone please help me? I really need this library to work with a ESP-32., else I will run into a wall doing my project, and I already invested much.

Edit: I used HMC5883L_compass.ino and the serial monitor is stuck at 1����<
ڔ!�a��@�Initialize HMC5883L

Note: my HMC5883L has I2C address of 0x0E, and works ok with the adafruit library(has calibration issues tho)

Library for ADXL345

Hi,
Thanks for sharing your work with us.

I am trying this with ADXL345, but I couldn't find the ADXL345 library you have used. Can you please share the link to it...

Thanks,
BK Krunal

Detekcja ruchu i bezruchu HMC5883L

Detekcja ruchu i bezruchu

czy ma ktos jakis przyklad z wyzwalaniem przerwania DRDY i budzenia arduino ze stanu uspienia.

Dzieki

mg per digit should be 0.73 instead of 0.073

line 81 of cpp file has a stray zero in it.

App hangs after a while

Hi! I'm using your example but it hangs on Vector raw = compass.readRaw(); after 2-5 minutes if I'm using 1m UTP cable. If direct connection - everything ok. What can you recommend?

UPD: the reason for that is infinite loop in readRegister16 depending on !Wire.available()
So some fail safe could be added. I patched it like

    if(!Wire.available()) {
      while (!begin())
      {
        Serial.println("Could not find a valid HMC5883L sensor, check wiring!");
        delay(100);
      }
      return 0;
    }

But the wire lib doesn't provide fail safe in it's Wire.endTransmission(); so if the power is lost for a second it won't recover too. So maybe should use another I2C lib with timeout support.

'HMC5883L' does not name a type

I get this error

with this code

`#include <Adafruit_HMC5883_U.h>
#if defined(ESP8266)
#include <ESP8266WiFi.h> // Include the Wi-Fi library
#else
#include <WiFi.h>
#endif
#include <WiFiUdp.h> // UDP library

#include <OSCMessage.h> // OSC library
#include <Wire.h>

HMC5883L compass;

const char* ssid = ""; // The SSID (name) of the Wi-Fi network you want to connect to
const char* password = ""; // The password of the Wi-Fi network

WiFiUDP Udp; // A UDP instance to let us send and receive packets over UDP
const IPAddress outIp(192,168,0,234); // remote IP of your computer
const unsigned int outPort = 4559; // remote port to receive OSC
const unsigned int localPort = 8888; // local port to listen for OSC packets (actually not used for sending)

void setup() {
Serial.begin(115200); // Start the Serial communication to send messages to the computer
delay(10);
Serial.println('\n');

WiFi.begin(ssid, password); // Connect to the network
Serial.print("Connecting to ");
Serial.print(ssid); Serial.println(" ...");

int i = 0;
while (WiFi.status() != WL_CONNECTED) { // Wait for the Wi-Fi to connect
delay(1000);
Serial.print(++i); Serial.print(' ');
}

Serial.println('\n');
Serial.println("Connection established!");
Serial.print("IP address:\t");
Serial.println(WiFi.localIP()); // Send the IP address of the ESP8266 to the computer

Serial.println("Starting UDP");
Udp.begin(localPort);
Serial.print("Local port: ");
#ifdef ESP32
Serial.println(localPort);
#else
Serial.println(Udp.localPort());
#endif

// Initialize HMC5883L
Serial.println("Initialize HMC5883L");
while (!compass.begin())
{
Serial.println("Could not find a valid HMC5883L sensor, check wiring!");
delay(500);
}
compass.setRange(HMC5883L_RANGE_1_3GA);
compass.setMeasurementMode(HMC5883L_CONTINOUS);
compass.setDataRate(HMC5883L_DATARATE_15HZ);
compass.setSamples(HMC5883L_SAMPLES_1);

checkSettings();

}

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() {
OSCMessage msg("/trigger/prophet");
msg.add("hello, osc.");
Udp.beginPacket(outIp, outPort);
msg.send(Udp);
Udp.endPacket();
msg.empty();
delay(500);

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();

}`

How to use your library when not using Arduino IDE`?

How to use your library when not using Arduino IDE`?

problem with esp32

Your lib seems to be very good but i have a problem with esp32

with wire lib are you using because i have problem of

MPU6050_temperature:20:14: error: 'class MPU6050' has no member named 'begin'

while(!mpu.begin(MPU6050_SCALE_2000DPS, MPU6050_RANGE_2G))

Not working for ARDUINO DUE BOARD

Not working for ARDUINO DUE BOARD

Could not find a valid HMC5883L sensor, check wiring!

I get this error message.
The device is connected to pin 21 and pin22.

With the ESP-IDF and the i2cscan sample, I have to declare the i2c pins first. Here I can not find this possibilty.
With the ESP-IDF I can read out the connected device once this is configured.

extra semicolons

This is pretty minor but the compiler threw an error in HMC5883L.cpp because of extra ; after #endif on lines:

220
245
272

No need to wait after Wire.requestFrom() and no Wire.beginTransmission() or endTransmission() should be used with Wire.requestFrom().

See: jarzebski/Arduino-INA219#1
Explanation: Common-mistakes, number 1, 2 and 3.