I’ve been working with the Nova-R410 (attached to an Orange Pi running Armbian Ubuntu) for a week or so. I’ve learned that when the proper driver is installed (automatically when using the Hologram CLI or manually) that four new devices appear:
I am able to open /dev/ttyUSB2 and interact with the Nova–unless a ppp session is established. I am reading that a limitation of the U-Blox SARA R410 is that it supports only one connection at a time, so I can only send it AT commands when it is not in a ppp session.
My questions are:
- is it true that I cannot send AT commands while a ppp session is active?
- if only one connection to the Nova is supported at a time, where does the driver create 4 /dev/ttyUSBx devices?
All help is greatly appreciated.