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the default situation with the two LEDs on my Raspberry Pi 4 is as such:

[situation now]

Green LED: read and write activity of my SD card
Red LED: Power 

I would like to change the the LEDs to:

[desired situation]

Green LED: Power 
Red LED: Read and write activity of my SD card

How would I accomplish this swap of the LED indicators?

Thanks in advance for a hint.

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  • Is the color more important, or the location? Are you willing/able to de-solder and re-solder the LEDs themselves? Commented Mar 16, 2022 at 19:36
  • It is the colour and what it indicates. The position is ok. therefor a software solution is needed. Thanks for the clarification question.
    – wechsler
    Commented Mar 18, 2022 at 13:02

1 Answer 1

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QUESTION - How to change LED function:

Green LED: Power (indicate power is applied)
Red LED: (indicate) Read and write activity of my SD card

ANSWER:

Add the following lines to your /boot/config.txt file:

dtparam=act_led_trigger=default-on 
dtparam=pwr_led_trigger=mmc0

Before adding these lines, you should verify that there are no other dtparam statements in /boot/config.txt that address act_led_trigger or pwr_led_trigger. Also verify that there are no dtoverlay=act-led statements.

After saving the edited /boot/config.txt file, exit your editor & reboot your system.

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