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Networking and servers • Re: Pi 3B+ Ethernet Port LEDs Seem Odd

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From the decompiled /boot/bcm2710-rpi-3-b-plus.dtb overlay file…

Code:

eth_led0 = "\0\0\07microchip,led-modes:0";eth_led1 = "\0\0\07microchip,led-modes:4";
From the Documentation…

Code:

        eth_led0                Set mode of LED0 - amber on Pi3B+ (default "1"),                                green on Pi4/5 (default "0").                                The legal values are:                                Pi3B+                                0=link/activity          1=link1000/activity                                2=link100/activity       3=link10/activity                                4=link100/1000/activity  5=link10/1000/activity                                6=link10/100/activity    14=off    15=on                                Pi4/5                                0=Speed/Activity         1=Speed                                2=Flash activity         3=FDX                                4=Off                    5=On                                6=Alt                    7=Speed/Flash                                8=Link                   9=Activity        eth_led1                Set mode of LED1 - green on Pi3B+ (default "6"),                                amber on Pi4/5 (default "8"). See eth_led0 for                                legal values.
So on the 3B+

LED0 (Amber) is set to 0 which means link/activity
LED1 (Green) is set to 4 which means link100/1000/activity

So a couple of questions.

1) I assume I was correct in looking at the bcm2710-rpi-3-b-plus.dtb file as the overlay used on my 3B+?

2) If 1 is correct, then it seems like I should be seeing a blinking Green LED.

3) If 1 is not correct, is there a command that will tell me which overlay is being used?

4) In the Documentation there is a note that says “amber on Pi3B+ (default “1”)” and “green on Pi3B+ (default “6”)”. That doesn’t appear to be what the OOTB overlay shows (0/4 vs 1/6), so maybe I’m looking at the wrong overlay?

Statistics: Posted by madmacks59 — Tue Feb 06, 2024 3:16 pm



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