Setting Warning and Current Limits for Forecr Boards

WHAT YOU WILL LEARN?

1- Setting Warning ang Crit Current limit on terminal.

ENVIRONMENT

Hardware: All Forecr Boards

Check Power Gui

"The values you see in the Power Jetson GUI are actually predefined values from the INA3221."

VDD → curr1
VDD_CPU_GPU_CV → curr2
VDD_SOC → curr3

We can read and modify these values through the driver.

Let's follow this command to see which files are on this path.

$cat /sys/bus/i2c/drivers/ina3221/1-0040/hwmon/hwmon1/*

$curr1_crit and curr1_max for VDD_IN
$curr2_crit and curr2_max for VDD_CPU_GPU_CV
$curr3_crit and curr3_max for VDD_ SOC

Read and Write Current Limit Value via Terminal

Let's read the warning current for VDD_IN using the following command.

$cat /sys/bus/i2c/drivers/ina3221/1-0040/hwmon/hwmon1/curr1_max

The value being readden its the same value on Jetson Power Gui

Let's change the value we set from 2008 to 3008 by entering the following command:

$echo 3008 > /sys/bus/i2c/drivers/ina3221/1-0040/hwmon/hwmon1/curr1_max

Check Jetson Power GUI

The value is immediately shown on the Jetson Power GUI.

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