I2c In C# Not Reading Values

Question

I have mpu-6050 6dof imu. I want to read the value of who_am_i register with register number 0x75. The register returns address 0x68. But I am getting 255. The device address is 0x68 as well. Code is as follows:

byte[] ret = ezB_Connect1.EZB.I2C.Read(I2C.ReadArgsEnum.Auto,0x75,1);

here is the register description for the device:RM-MPU-6000A.pdf

I checked my imu with arduino and it works fine. So, any help here?

Abdun Nafay · Answer

now it is done!

DJ Sures · Answer

You got it working? Can you share your code please

Abdun Nafay · Answer

Sure! But it will take a couple of days in applying the filter and all, then I would share the final product!

DJ Sures · Answer

awesome! I'm looking forward to seeing your success

christophemaury · Answer

Hi I have mpu-6050 too and i try to read the value from C# and i have some problems... I tried this command : ezB_Connect1.EZB.I2C.Read(I2C.ReadArgsEnum.Auto,0x75,1); and it does't work cause there is this method "I2C.ReadArgsEnum.Auto" more over the read method accept only 2 values.... Does it exist some where a sample to use the device mpu-6050 by using C# ? confused confused

DJ Sures · Answer

Please share your code. Also, in visual studio there is auto complete, which shows you the command syntax as you type. Removed duplicate thread.

DJ Sures · Answer

ps, i upgraded the EZ-SDK today - ensure you upgrade as well. Now that i'm in front of a PC, here's example code...
 public class MPU6050Example { MPU6050 _mpu; public FormMPU6050() { InitializeComponent(); // Create the mpu6050 object // Include a reference to the EZB (most likely in your EZB Connection UserControl) _mpu = new MPU6050(ucEZBConnect1.EZB); } private void btnInit_Click(object sender, EventArgs e) { // Init is required before you can begin obtaining data _mpu.Init(); } void getData() { try { EZ_B.Classes.MPU6050Cls response = _mpu.GetData(); // do something with the data } catch (Exception ex) { // handle your exception } finally { } } }

christophemaury · Answer

Hi DJ Sures You are credible :-) , i just ask a new api and you made it in few minutes. thank you very much. I have included your code in my visual studio and tried to print the value of the Gyro but the values of the gyro are initials label2.Text = response.GyroX.ToString(); // value 0 label3.Text = response.GyroY.ToString(); // value 0 there is something wrong in my code i think. i keep on to look for and keep you inform thank you again. tired

christophemaury · Answer

Hi DJ sures It's OK, that works fine when i call the init function before the get data. Thank you have a good week end. Bye Christophe

christophemaury · Answer

Hi DJ Sures My projet works fine but I have just a remark to say. I think that you have reversed : - the value GyroX with the AccelX - the value GyroY with the AccelY Thank you again. Bye Christophe

DJ Sures · Answer

The data collected is correct, they are not reversed.
 public Classes.MPU6050Cls GetData() { _ezb.I2C.Write(0x68, new byte[] { 0x3B }); byte [] everything = _ezb.I2C.Read(0x68, 14).Reverse().ToArray(); Classes.MPU6050Cls cls = new Classes.MPU6050Cls(); cls.AccelX = BitConverter.ToInt16(everything, 12); cls.AccelY = BitConverter.ToInt16(everything, 10); cls.AccelZ = BitConverter.ToInt16(everything, 8); cls.TmpC = (BitConverter.ToUInt16(everything, 6) / 340) + 35; cls.GyroX = BitConverter.ToInt16(everything, 4); cls.GyroY = BitConverter.ToInt16(everything, 2); cls.GyroZ = BitConverter.ToInt16(everything, 0); return cls; }

Abdun Nafay

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