E750 power button

Technical Support for Routers
1

Hi, I am wondering how does the stock OpenWRT know when to put the modem in standby mode?

Is there a GPIO to query if standby is selected?

2

Do you mean the GL firmware? or what firmware?

4

GL firmware

5

I am building OpenWRT from source wondering if there is a way to query the power button when standby is displayed on the screen

6

Sorry this function did not support in the other firmware, only supported in the stock GL firmware, and it requires manually press the power button to know the situation, and press it 3 secs to enter/exit the standby mode.

7

Thanks, how does the GL firmware know when the button is pressed for 3 seconds? Does it query a gpio?

8

The button control by the MCU, and the MCU sends Power_Saving_on or Power_Saving_off to the CPU via the serial port.

The standby mode means the CPU control Wi-Fi, 4G, etc. turn on / off, this still depends on GL firmware.

9

Thanks for the info