harmony 鸿蒙Thermal Log Customization
Thermal Log Customization
Overview
Introduction
By default, the OpenHarmony provides the thermal log feature. Thermal logs record the temperature of device components during usage. However, the content and path of thermal logs vary according to product specifications. To address this issue, OpenHarmony provides the thermal log customization function.
Constraints
The configuration path for battery level customization is subject to the configuration policy. In this development guide, /vendor
is used as an example of the configuration path. During actual development, you need to modify the customization path based on the product configuration policy.
How to Develop
Setting Up the Environment
Hardware requirements:
Development board running the standard system, for example, the DAYU200 or Hi3516D V300 open source suite.
Environment requirements:
For details about the requirements on the Linux environment, see Quick Start.
Getting Started with Development
The following uses DAYU200 as an example to illustrate thermal log customization.
Create the
thermal
folder in the product directory /vendor/hihope/rk3568.Create a target folder by referring to the default thermal log configuration folder, and install it in
//vendor/hihope/rk3568/thermal
. The content is as follows:profile ├── BUILD.gn ├── thermal_hdi_config.xml
Create a target folder by referring to the default thermal log parameter configuration folder and install it in
//vendor/hihope/rk3568/thermal
. The file format is as follows:etc ├── BUILD.gn ├── thermal.para ├── thermal.para.dac
Write the custom
thermal_hdi_config.xml
file by referring to the thermal_hdi_config.xml file in the default thermal log configuration folder. The following tables describe the related configuration items.Table 1 Description of the tracing configuration
|Configuration Item|Description|Data Type|Value Range| |——–|——–|——–|——–| |interval|Interval for recording temperature tracing logs, in ms.|int|>0| |width|Width of the temperature tracing log, in characters.|int|>0| |outpath|Path for storing temperature tracing logs.|string|N/A|
**Table 2** Description of the node configuration
|Node|Configuration Item|Description| |——–|——–|——–| |title|path|Path for obtaining the thermal zone name.| |title|name|Thermal zone name.| |value|path|Path for obtaining the thermal zone temperature.|
```shell
<tracing interval="5000" width="20" outpath="/data/log/thermal-log">
<node>
<title path="sys/class/thermal/thermal_zone0/type"/>
<value path="sys/class/thermal/thermal_zone0/temp"/>
</node>
<node>
<title name="gpu-thermal"/>
<value path="sys/class/thermal/thermal_zone1/temp"/>
</node>
</tracing>
```
Write the custom
thermal.para
andthermal.para.dac
files by referring to the thermal.para and thermal.para.dac files in the default hot log parameter configuration folder. The custom configuration is as follows:thermal.para:
persist.thermal.log.enable=true # Enable the thermal log function. persist.thermal.log.interval=5000 # Set the interval for recording temperature tracing logs, in ms. persist.thermal.log.width=20 # Set the width of the temperature tracing log, in characters.
thermal.para.dac:
persist.thermal.log.="power_host:power_host:600" # Configure access permissions.
Write the
BUILD.gn
file by referring to the BUILD.gn file in the default thermal log configuration folder to pack thethermal_hdi_config.xml
file to the//vendor/etc/thermal_config/hdf
directory. The configuration is as follows:import("//build/ohos.gni") ohos_prebuilt_etc("thermal_hdf_config") { source = "thermal_hdi_config.xml" relative_install_dir = "thermal_config/hdf" install_images = [ chipset_base_dir ] # Required configuration for installing the thermal_hdi_config.xml file in the vendor directory. part_name = "product_rk3568" # Set part_name to product_rk3568 for subsequent build. You can change it as required. }
Write the
BUILD.gn
file by referring to the BUILD.gn file in the default thermal log parameter configuration folder to pack thethermal.para
andthermal.para.dac
files to the//vendor/etc/param/thermal.para
directory. The configuration is as follows:import("//build/ohos.gni") ## Install thermal.para to /vendor/etc/param/thermal.para ohos_prebuilt_etc("thermal.para") { source = "thermal.para" relative_install_dir = "param" install_images = [ chipset_base_dir ] part_name = "product_rk3568" } ohos_prebuilt_etc("thermal.para.dac") { source = "thermal.para.dac" relative_install_dir = "param" install_images = [ chipset_base_dir ] part_name = "product_rk3568" } group("param_files") { deps = [ ":thermal.para", ":thermal.para.dac", ] }
Add the build target to
module_list
in ohos.build in the/vendor/hihope/rk3568
directory. For example:{ "parts": { "product_rk3568": { "module_list": [ "//vendor/hihope/rk3568/default_app_config:default_app_config", "//vendor/hihope/rk3568/image_conf:custom_image_conf", "//vendor/hihope/rk3568/preinstall-config:preinstall-config", "//vendor/hihope/rk3568/resourceschedule:resourceschedule", "//vendor/hihope/rk3568/etc:product_etc_conf", "//vendor/hihope/rk3568/thermal/profile:thermal_hdf_config", // Add the configuration for building of thermal_hdf_config. "//vendor/hihope/rk3568/thermal/etc:param_files" // Add the configuration for building of thermal.para and thermal.para.dac. ] } }, "subsystem": "product_hihope" }
In the preceding code,
//vendor/hihope/rk3568/thermal/
is the folder path,profile
andetc
are folder names, andthermal_hdf_config
andparam_files
are the build targets.Build the customized version by referring to Quick Start.
./build.sh --product-name rk3568 --ccache
Burn the customized version to the DAYU200 development board.
Debugging and Verification
After startup, run the following command to launch the shell command line:
hdc shell
Go to the customized directory.
cd /data/log/thermal/
View thermal logs.
cat thermal.000.20170805-175756
The following is the reference thermal log after customization:
timestamp soc-thermal gpu-thermal 2017-08-05 17:57:56 37777 37222 2017-08-05 17:58:01 38333 37777 2017-08-05 17:58:06 36666 37222 2017-08-05 17:58:11 36666 37222 2017-08-05 17:58:16 36666 37222 2017-08-05 17:58:21 36111 37222 2017-08-05 17:58:26 36111 37222 2017-08-05 17:58:31 36666 37222 2017-08-05 17:58:36 36111 37222 2017-08-05 17:58:41 36111 37222 2017-08-05 17:58:46 36666 36666
Reference
During development, you can refer to the default thermal log configuration and default thermal log parameter configuration.
Packing path: /vendor/etc/thermal_config/hdf
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