Act Light on Pi3 B+

[MKinsman]

I see in older documentation that the Status_LED used to be wired to gpio16 but for my Pi which is a model 3 B+ the schematics dont show it being wired to the gpio and gpio16 goes to the header?? is this correct

[rpdom]

Correct.

The LEDs on the Pi 3B are wired to an i2c gpio expander.

[MKinsman]

So is there any way to address the act led on the Pi3??

[dgordon42]

See this:

Code: Select all

Name:   pi3-act-led
Info:   Pi3 uses a GPIO expander to drive the LEDs which can only be accessed
        from the VPU. There is a special driver for this with a separate DT
        node, which has the unfortunate consequence of breaking the
        act_led_gpio and act_led_activelow dtparams.
        This overlay changes the GPIO controller back to the standard one and
        restores the dtparams.
Load:   dtoverlay=pi3-act-led,<param>=<val>
Params: activelow               Set to "on" to invert the sense of the LED
                                (default "off")

        gpio                    Set which GPIO to use for the activity LED
                                (in case you want to connect it to an external
                                device)
                                REQUIRED

From '/boot/overlays/README'

Hope this helps,
Dave.

[hello world :-)]

I see in older documentation that the Status_LED used to be wired to gpio16 but for my Pi which is a model 3 B+ the schematics dont show it being wired to the gpio and gpio16 goes to the header?? is this correct

Errr... sorry to be like this, but: Pi B+ came before Pi 2B which came before Pi 3B
There is no 3 B+
JSYK
sorry...