DElay USB Power on reboot

Hardware MikroTik hardware general
1

Hi,

I have a RB922 which uses R11e modem to connect to the internet. The board also supplies power to a RPI via the USB port and internet connectivity via Ethernet.

I have a schedule that runs every day that reboots the RB which also reboot the RPI due to the USB power going on and off. Occasionally the RPI doesn’t get a DHCP address as i presume it boots quicker than the RB.

Is there a way to delay the power coming on for the USB port for a few seconds after a reboot to give the RB time to start correctly.

Thanks

2

Wouldn’t it be much easier to delay the dhcp client execution on the rpi?

3

thats why i love these forums… that is proper thinking out of the box… :smiley:

I can delay the boot up of the RPI completely to give the RB time to set itself up properly

a quick google looks like i need to add the following to the /boot/config.txt

[boot_delay=x
Wait for x seconds in start.elf before loading kernel.
Default 1.

Thanks