invensense proprietary sensor driver, HAL api, Nexus grouper

[gatis paeglis]

Hello,

I have been utilizing HAL API in my project, everything seems to work fine, except the sensors calibration seems to be a bit off..

This is the output from logcat:

E/Sensors (  325): HAL:enable_sysfs_sensor - write 1 returned -1 (Device or resource busy / 16)
E/MPL-storeload(  325): Cannot open file "/data/inv_cal_data.bin" for read
E/MPL-storeload(  325): Could not load cal file - aborting
E/MPL-storeload(  325): Could not load the calibration data - error 107 - aborting
E/Sensors (  325): Warning: Accelerometer load calibration config fail 32
E/Sensors (  325): HAL:read fails with error code=-1
E/Sensors (  325): HAL:error reading gyro temperature
E/Sensors (  325): HAL:read fails with error code=-1
E/Sensors (  325): HAL:error reading gyro temperature
E/Sensors (  325): HAL:read fails with error code=-1
E/Sensors (  325): HAL:error reading gyro temperature


I see that these message are coming from android/hardware/invensense/mlsdk library. Could anyone share some info with me, what is this library and
what could be going wrong? Thanks.

Gatis.

[yuanwei-204]

Hi .

log : Cannot open file "/data/inv_cal_data.bin" for read
it means that you need a calibration file in  "/data/"

 

 

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yuanwei-204

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[gatis paeglis]

Do you know that or its just a guess? I don't remember removing any files by that name.. From my understanding the calibration data are generated during run-time by "mlsdk" library, including "inv_cal_data.bin", but since something seems to fail [1], this file never gets generated and etc.


[1] HAL:enable_sysfs_sensor - write 1 returned -1 (Device or resource busy / 16)

On Tuesday, September 3, 2013 5:36:38 AM UTC+2, yuanw...@163.com wrote:



[gatis paeglis]

The issue was the proprietary binary "system/bin/sensors-config" was missing.