[manbehindthemadness]

I am using that exact filter; however, I’m getting around +-8 degrees in the noise

[manbehindthemadness]

After inspecting the numbers this seems to only relate to the tilt compensated heading value, the gyro values are spot on.

[manbehindthemadness]

So I did a full header trace with a DVM and discovered that one of the 3.3v pin-sockets on the header was misshaped, I replaced the header with an extra I had on the bench and I am in business! I will report back once I actually use the module in practice to confirm general compatibility.

[manbehindthemadness]

I was able to locate the related portion of the driver code, but have found no solution as of yet.

line 320:

default:
dev_err(&drv_data->adapter.dev,
"mv64xxx_i2c_fsm: Ctlr Error -- state: 0x%x, "
"status: 0x%x, addr: 0x%x, flags: 0x%x\n",
drv_data->state, status, drv_data->msg->addr,
drv_data->msg->flags);
drv_data->action = MV64XXX_I2C_ACTION_SEND_STOP;
mv64xxx_i2c_hw_init(drv_data);
drv_data->rc = -EIO;
}

https://elixir.bootlin.com/linux/latest/source/drivers/i2c/busses/i2c-mv64xxx.c

[manbehindthemadness]

Interesting, I am experiencing the exact same problem with my GPS data, however I am able to pull in the i2c data from the other sensors.

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