which is type of gr-lora input modulator?

[stackprogramer]

it's input modulator has gray input, why we have not data type complex,float and...so on........ your example can not work with file source in gnuradio best regards stackprogramer

[matt-knight]

Hi @stackprogramer,

The gray inputs you are seeing are for GNU Radio's messaging interface. The easiest way to send/receive messages is to set up a Socket PDU within a flowgraph and then treat it like a web socket. Try Linux's nc as I've done in the README to try it out.

Two advantages to the messaging interface are that it is asynchronous and really easy to interact with:

• A traditional streaming datatype (complex float) is used where the modulator and demodulator output/consume IQ, since those blocks touch the radio/DSP chain. Asynchronous messaging enables the encoder and decoder to be bursty, since they only need to do work when there is a message ready to be sent or a packet has been received.
• Web sockets are super easy for passing data to other programs or a shell, or the Message Debug block if you want to keep it all in GRC.

What is in your file source? What are you trying to do exactly?

Best, Matt

[matt-knight]

I'm going to close this due to inactivity -- feel free to re-open or start a new issue if you have further questions.