Need help writing my first script (LM-Sensors Custom Output)

Question

I'm new here and to UNIX and Gnu/Linux scripts, I need help to build a script that modifies the lm-sensors output.
When I use the command sensors this is the current output

mint@desktop:~$ sensors
amdgpu-pci-0100
Adapter: PCI adapter
vddgfx:       +0.72 V
fan1:        1245 RPM  (min =    0 RPM, max = 2400 RPM)
edge:         +37.0°C  (crit = +94.0°C, hyst = -273.1°C)
power1:       34.26 W  (cap = 145.00 W)
coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +39.0°C  (high = +85.0°C, crit = +105.0°C)
Core 0:        +36.0°C  (high = +85.0°C, crit = +105.0°C)
Core 1:        +40.0°C  (high = +85.0°C, crit = +105.0°C)
Core 2:        +35.0°C  (high = +85.0°C, crit = +105.0°C)
Core 3:        +37.0°C  (high = +85.0°C, crit = +105.0°C)

I'm coming from Windows and I used to have HWMonitor to see in real time stuff like usage and temps but it's hard to get this task on linux, my script idea is to make something that takes the sensors information and translates a friendly output to something like this:

amdgpu-pci-0100
Voltage:     +0.72 V 
Fans Speed:  1248 RPM ( Percentage %% )
Temperature: +36.0°C  ( Percentage %% )
Power:       34.22 W  ( Percentage %% )
GPU Usage:   Percentage %%
VRAM Usage:  1GB / 8GB ( Percentage %% )

Can you help me? I'm not asking the full script just any advice that you might have for a newbie, is this script possible to be made?

Btw, I have tried PSensor but it doesn't show amdgpu module and RadeonTop dont show temps and VRAM.

Answer 1

For AMD gpus, you can access all of this data as a simple user from /sys/class/drm/card0/device/

What you're looking for is /sys/class/drm/card0/device/gpu_busy_percent
It could be different from card0 (depending how many gpus you have)

In this directory you'll have everything your need as GPU/VRAM usage, temperature, tension and so on..

Most of files are safe to cat however NEVER cat /sys/class/drm/card0/device/remove and if you do, just reboot.

I strongly recommend to you to read this, the following is just a summary:
https://dri.freedesktop.org/docs/drm/gpu/amdgpu.html#gpu-power-thermal-controls-and-monitoring

This is a list of file which are safe to cat.
/sys/class/drm/card0/device/gpu_busy_percent GPU Core usage in %
/sys/class/drm/card0/device/mem_busy_percent GPU Mem usage in %

All files prefixed with pp_ are readable except pp_table.
pp_dpm_* are related to GPU core and memory clocks
pp_dpm_sclk is for the GPU core
pp_dpm_mclk is for the GPU memory
The current state is marqued with a *

Under the directory hwmon you will have another directory corresponding to your hardward monitor for me it is named hwmon0, here are

/sys/class/drm/card0/device/hwmon/hwmon0/fan* GPU Fan current/min/max
/sys/class/drm/card0/device/hwmon/hwmon0/in* GPU mV and label
/sys/class/drm/card0/device/hwmon/hwmon0/power* GPU Watt current/min/max
/sys/class/drm/card0/device/hwmon/hwmon0/pwm* GPU PWM current/min/max/
/sys/class/drm/card0/device/hwmon/hwmon0/temp* GPU temp current/min/max