Hi, guy. i am interfacing Magneto sensor triple axis. HMC5833l i have UNO at Tx side and Mega at Rx side.
the problem is i am not gett ing right data on at TX side. here is my code.
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_HMC5883_U.h>
#include <VirtualWire.h> //Load the library
float headingDegrees,hd; //Define the temp float variable
char msg[6];
Adafruit_HMC5883_Unified mag = Adafruit_HMC5883_Unified(12345);
void setup(void)
{
Serial.begin(9600);
//Serial.println(“HMC5883 Magnetometer Test”); Serial.println("");
vw_set_tx_pin(12); // Sets pin D12 as the TX pin
vw_setup(2000); // Bits per sec
// settx();
/* Initialise the sensor /
if(!mag.begin())
{
/ There was a problem detecting the HMC5883 … check your connections */
Serial.println(“Ooops, no HMC5883 detected … Check your wiring!”);
while(1);
}
/* Display some basic information on this sensor */
// displaySensorDetails();
}
void loop(void)
{
/* Get a new sensor event */
sensors_event_t event;
mag.getEvent(&event);
/* Display the results (magnetic vector values are in micro-Tesla (uT)) */
// Serial.print("X: “); Serial.print(event.magnetic.x); Serial.print(” ");
//Serial.print("Y: “); Serial.print(event.magnetic.y); Serial.print(” ");
//Serial.print("Z: “); Serial.print(event.magnetic.z); Serial.print(” ");Serial.println(“uT”);
// Hold the module so that Z is pointing ‘up’ and you can measure the heading with x&y
// Calculate heading when the magnetometer is level, then correct for signs of axis.
float heading = atan2(event.magnetic.y, event.magnetic.x);
// Once you have your heading, you must then add your ‘Declination Angle’, which is the ‘Error’ of the magnetic field in your location.
// Find yours here: http://www.magnetic-declination.com/
// Mine is: -13* 2’ W, which is ~13 Degrees, or (which we need) 0.22 radians
// If you cannot find your Declination, comment out these two lines, your compass will be slightly off.
float declinationAngle = 0.22;
heading += declinationAngle;
// Correct for when signs are reversed.
if(heading < 0)
heading += 2*PI;
// Check for wrap due to addition of declination.
if(heading > 2PI)
heading -= 2PI;
// Convert radians to degrees for readability.
float headingDegrees = heading * 180/M_PI;
hd = headingDegrees;
dtostrf(hd, 6,2,msg); //converts the float into a char
vw_send((uint8_t *)msg,strlen(msg)); //transmits the data
vw_wait_tx(); // Wait until the whole message is gone
//delay(1000);
//Serial.print("Heading (degrees): "); Serial.println(headingDegrees);
delay(500);
}
plz help me