Mpu6050与HMC5883一起用?
把MPU6050和HMC5883的代码复制到了一起,为什么显示的就只剩下MPU的数据,而HMC的xyz全是0!!新人求指教?
#include <I2Cdev.h>
#include <MPU6050.h>
#include <Wire.h>//添加必须的库文件
#define HMC5883_WriteAddress 0x1E //i.e 0x3C >> 1
#define HMC5883_ModeRegisterAddress 0x02
#define HMC5883_ContinuousModeCommand 0x00
#define HMC5883_DataOutputXMSBAddress0x03
int regb=0x01;
int regbdata=0x40;
int outputData;
//====一下三个定义了陀螺仪的偏差===========
//#define Gx_offset -3.06
//#define Gy_offset 1.01
//#define Gz_offset -0.88
//====================
MPU6050 accelgyro;
int16_t ax,ay,az;
int16_t gx,gy,gz;//存储原始数据
float aax,aay,aaz,ggx,ggy,ggz;//存储量化后的数据
float Ax,Ay,Az;//单位 g(9.8m/s^2)
float Gx,Gy,Gz;//单位 °/s
float Angel_accX,Angel_accY,Angel_accZ;//存储加速度计算出的角度
long LastTime,NowTime,TimeSpan;//用来对角速度积分的
#define LED_PIN 13
bool blinkState=false;
void setup()//MPU6050的设置都采用了默认值,请参看库文件
{
Wire.begin();
Serial.begin(9600);
Serial.println("Initializing I2C device.....");
accelgyro.initialize();
Serial.println("Testing device connections...");
Serial.println(accelgyro.testConnection() ? "MPU6050 connection successful":"MPU6050 connection failure");
pinMode(LED_PIN,OUTPUT);
}
void loop()
{
int i,x,y,z;
double angle;
Wire.beginTransmission(HMC5883_WriteAddress);
Wire.write(regb);
Wire.write(regbdata);
Wire.endTransmission();
delay(100);
Wire.beginTransmission(HMC5883_WriteAddress); //Initiate a transmission with HMC5883 (Write address).
Wire.write(HMC5883_ModeRegisterAddress); //Place the Mode Register Address in send-buffer.
Wire.write(HMC5883_ContinuousModeCommand); //Place the command for Continuous operation Mode in send-buffer.
Wire.endTransmission(); //Send the send-buffer to HMC5883 and end the I2C transmission.
delay(100);
Wire.beginTransmission(HMC5883_WriteAddress);//Initiate a transmission with HMC5883 (Write address).
Wire.requestFrom(HMC5883_WriteAddress,6); //Request 6 bytes of data from the address specified.
accelgyro.getMotion6(&ax,&ay,&az,&gx,&gy,&gz);//获取三个轴的加速度和角速度
if(6 <= Wire.available()) // If the number of bytes available for reading be <=6.
{
for(i=0;i<6;i++)
{
outputData=Wire.read();//Store the data in outputData buffer
}
}
x=outputData << 8 | outputData; //Combine MSB and LSB of X Data output register
z=outputData << 8 | outputData; //Combine MSB and LSB of Z Data output register
y=outputData << 8 | outputData; //Combine MSB and LSB of Y Data output register
Serial.print("x");
Serial.print(x);
Serial.print(" y ");
Serial.print(y);
Serial.print(" z ");
Serial.print(z);
angle= atan2((double)y,(double)x) * (180 / 3.14159265) + 180; // angle in degrees
/*
Refer the following application note for heading calculation.
http://www.ssec.honeywell.com/magnetic/datasheets/lowcost.pdf
----------------------------------------------------------------------------------------
atan2(y, x) is the angle in radians between the positive x-axis of a plane and the point
given by the coordinates (x, y) on it.
----------------------------------------------------------------------------------------
This sketch does not utilize the magnetic component Z as tilt compensation can not be done without an Accelerometer
----------------->y
|
|
|
|
|
|
\/
x
N
NW|NE
|
W----------E
|
SW|SE
S
*/
//Print the approximate direction
/*Serial.print("heading ");
if((angle < 22.5) || (angle > 337.5 ))
Serial.print("South");
if((angle > 22.5) && (angle < 67.5 ))
Serial.print("South-West");
if((angle > 67.5) && (angle < 112.5 ))
Serial.print("West");
if((angle > 112.5) && (angle < 157.5 ))
Serial.print("North-West");
if((angle > 157.5) && (angle < 202.5 ))
Serial.print("North");
if((angle > 202.5) && (angle < 247.5 ))
Serial.print("NorthEast");
if((angle > 247.5) && (angle < 292.5 ))
Serial.print("East");
if((angle > 292.5) && (angle < 337.5 ))
Serial.print("SouthEast");*/
// Serial.print(": Angle between X-axis and the South direction ");
if((0 < angle) && (angle < 180) )
{
angle=angle;
}
else
{
angle=360-angle;
}
Serial.print(" angle");
Serial.println(angle);
//Serial.println(" Deg");
delay(100);
//Serial.print(ax/16384.00);
//Serial.print(",");
//Serial.print(ay/16384.00);
//Serial.print(",");
//Serial.print(az/16384.00);
//Serial.print(",");
//Serial.print(gx/131.00);
//Serial.print(",");
//Serial.print(gy/131.00);
//Serial.print(",");
//Serial.println(gz/131.00);
//======一下三行是对加速度进行量化,得出单位为g的加速度值
Ax=ax/16384.00;
Ay=ay/16384.00;
Az=az/16384.00;
//==========以下三行是用加速度计算三个轴和水平面坐标系之间的夹角
//请参考:http://www.geek-workshop.com/forum.php?mod=viewthread&tid=2328&page=1#pid27876
//个人觉得原帖中case0算的不对,应该是z/sqrt(x*x+y*y),估计是江南楼主写错了
Angel_accX=atan(Ax/sqrt(Az*Az+Ay*Ay))*180/3.14;
Angel_accY=atan(Ay/sqrt(Ax*Ax+Az*Az))*180/3.14;
Angel_accZ=atan(Az/sqrt(Ax*Ax+Ay*Ay))*180/3.14;
//==========以下三行是对角速度做量化==========
ggx=gx/131.00;
ggy=gy/131.00;
ggz=gz/131.00;
//===============以下是对角度进行积分处理================
NowTime=millis();//获取当前程序运行的毫秒数
TimeSpan=NowTime-LastTime;//积分时间这样算不是很严谨
//下面三行就是通过对角速度积分实现各个轴的角度测量,当然假设各轴的起始角度都是0
// Gx=Gx+(ggx-Gx_offset)*TimeSpan/1000;
//Gy=Gy+(ggy-Gy_offset)*TimeSpan/1000;
//Gz=Gz+(ggz-Gz_offset)*TimeSpan/1000;
Gx=Gx+(ggx)*TimeSpan/1000;
Gy=Gy+(ggy)*TimeSpan/1000;
Gz=Gz+(ggz)*TimeSpan/1000;
LastTime=NowTime;
//==============================
Serial.print(Angel_accX);
Serial.print(",");
Serial.print(Angel_accY);
Serial.print(",");
Serial.print(Angel_accZ);
Serial.print(",");
Serial.print(Gx);
Serial.print(",");
Serial.print(Gy);
Serial.print(",");
Serial.println(Gz);
//Serial.print(ggx-Gx_offset);
//Serial.print(",");
//Serial.print(ggy-Gy_offset);
//Serial.print(",");
//Serial.println(ggz-Gz_offset);
blinkState=!blinkState;
digitalWrite(LED_PIN,blinkState);
delay(1000);//这个用来控制采样速度
} :'(:'(:'(:'( :dizzy::dizzy::dizzy::dizzy: 坐等回复。 mpu6050可以扩展一个传感器,经过融合后直接输出9轴数据,HMC5883应该接到mpu6050上吧,我也不太清楚 qptimus 发表于 2013-4-14 13:11 static/image/common/back.gif
mpu6050可以扩展一个传感器,经过融合后直接输出9轴数据,HMC5883应该接到mpu6050上吧,我也不太清楚
是可以接到的,但是不知道软件上怎么操作。 传一个IMU的库。。。依稀记得,这里面好像是有MPU6050与HMC5883一起使用的代码。。。你可以研究研究。
弘毅 发表于 2013-4-14 14:12 static/image/common/back.gif
传一个IMU的库。。。依稀记得,这里面好像是有MPU6050与HMC5883一起使用的代码。。。你可以研究研究。
多谢 我的去研究下 弘毅 发表于 2013-4-14 14:12 static/image/common/back.gif
传一个IMU的库。。。依稀记得,这里面好像是有MPU6050与HMC5883一起使用的代码。。。你可以研究研究。
http://www.geek-workshop.com/forum.php?mod=viewthread&tid=1793
这个帖子里有硬件的连接方式,5楼说的要配置Bypass模式, 这个我已经找到怎么配置了,剩下的问题便是MPU6050.h里面读取九轴数据的代码需要自己来写,这种操作位的东西对一个新生来说有点难。
能不能帮我找一下附件里的代码在哪里? 搞了几天,终于有点眉目了,不能直接复制代码,需要改6050工作模式,最近有考试,过两天上个教程。 楼主的问题解决了吗 怎么解决啊 我也遇到了相同的问题 一望楼主帮忙解答一下:'(:'( 楼主解决了么,求解答 楼主,能给个HMC5883的测试程序吗?试了很多个例子都不成功。 [email protected] 还是不会啊 啊啊啊啊啊啊
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