Just shooting out a quick update. I wrote a simple wrapper for pyserial
provide a serial port block for use with GNU Radio/GRC. The objective
was to support a legacy command generation program that would typically
output to an external, hardware-based transmitter via RS-232. The user
wanted to move the radio functionality into GNU Radio/USRP, but re-use
legacy application and interface to save a little work. This block,
combined with a socat generated virtual serial port permitted this
migration of functionality.
This block uses grextras and message passing:
Some possible use cases for this block:
- Interfacing to legacy programs. For example, you could use this
block to interface with older amateur radio programs that talked to
external TNCs on a serial port. You can also connect to AX25-tools
this block [may require a KISS emulator block]. May be a way to
the amateur radio community in PHY evolution while keeping them in
with familiar portions of their typical radio chain.
- Outputting USRP GPSDO sensor data to mapping applications that
typically use a serial port. This would require some manipulation to
generate standard NMEA commands - I plan on doing this here soon.
- Deploying novel modems (i.e. in place of something like a
900 MHz or xBee) with an RS-232 interface to other devices like
etc. - - perhaps with the E100?
I’m on the road and do not have hardware to test it thoroughly. I’ve
done some cursory testing with virtual ports created with socat.