Hi, i want to use the cubieboard as a CONTROLLER of a network of proprietary devices.
This devices communicates via RS485 network. so using a USB-to-485 device
i can have my program running on linux inside cubieboard and connect to Rs485 network
using tty* and send/receive data as a serial port. That is ok.
This CONTROLLER need to send data to a PC too, so i can connect to it via ethernet port.
But there is situations where there´s no TCP network ,
and the PC has to connect with the cubieboard(CONTROLLER) via USB port.
My question is , The MINI-USB can be used to power the cubieboard and to transfer data?
Inside the cubieboard linux this connection can be accessed via a tty device and send/receive
data like a serial port, just like USB-485 or other USB-to-Serial cable.
I need to know if i will need two cables to be connected to PC.
One to Power the cubieboard and other to transfer data as a serial port.
Or if using MINI-USB i will only need one cable and send/receive data as serial port?
First is this a BACnet MS/TP network? And if so, what USB/TTY connector are you using?
The Mini-USB port can be used for power and data, I have done that to some level of success a year or so ago, but....
The Mini-USB only provides .5A to the Cubie, and that can result in questionable behavior. Sometimes it works fine, but don't try to power any USB devices or absolutely a SATA drive! Better to put 1 - 2 A to the power port.