VOXL2 Wifi+Doodle

ctitus

Hi,

I'm using the VOXL2 with the VOXL 2 Ethernet and USB Hub Add-on board, and I have wifi on the USB3 port (J11), a doodle radio on the USB2 port (J12), and keep the ethernet port open for hardwiring with an ethernet cable (J13). My problem is when I use the voxl-configure-modem command to set the static ip for the doodle, I cannot ping it. It works just fine using the USB3 UART Add-On, and I think this is because that board only exposes eth0. However, the Ethernet and USB Hub Add-on board has both eth0 and eth1. If I run ip addr add 10.223.1.101/16 dev eth1, I am able to ping the doodle and it works just fine.

My question is what is the intended method (if any) to essentially run voxl-configure-modem such that it configures everything for eth1 instead of eth0? If there is no way to do that, how would you recommend I persist a static ip on eth1 though reboots?

tom

@ctitus The voxl-modem-start script which gets run on boot after running voxl-configure-modem is hard-coded to eth0 but it is just a simple bash script that you can modify if you'd like to fit your use-case.

The script itself lives at /usr/bin/voxl-modem-start

This is the area you would want to modify:

https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-modem/-/blob/master/scripts/voxl-modem-start?ref_type=heads#L86-111

Vinny

Hi @ctitus
M0062 USB2 ports are not current-capable of powering a Doodle Radio at full specs. They are only 1A.
https://docs.modalai.com/m0062/#details

Doodle requires 2A support, which can only come from our 10-pin format USB ports on M0130.
This table does not include M0062 since it was never intended to be a production product (so I need to update that table):
https://docs.modalai.com/expansion-design-guide/#usb-expansion-over-j3--j5

You should certainly get basic stuff working, but you will not achieve Doodle published ranges and output powers on any board we have other than M0130 or M0078: https://docs.modalai.com/usb-epxansion-with-fastboot-v2-datasheet/

ctitus

@Vinny @tom Thanks for all the help. I have the doodle powered on a different bus, I just have the signal going to the J12. And modifying the voxl-configure-modem script worked for me, I now have custom IPs on eth1 like I wanted.

Vinny

Hi @ctitus
OK great! I am glad you picked that detail up!
M0062 was a rather early design that we almost stopped making, so we never documented it nicely. But, there is so much demand for an RJ-45 that we decided to make a few more