Devolo 1200e Buzzer problem

Installing and Using OpenWrt
1

I bought an devolo 1200e (https://openwrt.org/toh/hwdata/devolo/devolo_wifi_pro_1200e) months ago. I knew there was an beeper (buzzer,... whatever) in. With the stock firmware was everything find(Stock is really really old: OpenWrt 17.x).

According to https://frickel.cloud/firmware/openwrt/commit/1724d4e9ed7716a5444eca42adf045c2f3afc554 the buzzer shuld be accessible via GPIO 15.

I also read this article: https://openwrt.org/docs/techref/hardware/port.gpio - No success

Now my Question: How to controll the buzzer? Is there an option or plugin for luci?

Simply that question.

2

It's at least present on the ath79 firmware

        beeper {
                compatible = "gpio-beeper";
                gpios = <&gpio 4 GPIO_ACTIVE_HIGH>;
        };

You'd need something to drive that GPIO. Perhaps there is a kmod-beeper or the like if https://github.com/torvalds/linux/blob/master/drivers/input/misc/gpio-beeper.c isn't built by default.

3

https://openwrt.org/packages/pkgdata/kmod-gpio-beeper perhaps?

1 Like
4

I saw kmod-gpio-beeper already. How to use it?

5

Check to see what kind of device it reveals in /dev/ and/or /sys/ and then write/find a user-land package to do what you want.

6

?
I dont understand

7

#push?

Please explain you answer!

8

The hardware definitions are in the kernel.

If present, the kernel will attach the gpio-beeper driver to it the hardware. It will typically reveal a device in /dev/ as well as in the sysfs.

You need to find software that drives a GPIO beeper to do something useful for you.

9

Yah.......What software is good to use? I cant find any!