Receive raw data for replay

[Ruegg]

Hi,

Is there anyway I can receive just the raw data and replay it later? This means I don't care for being able to understand the data format, modulation, or anything of the sort in my use case. I purely wish to be able to detect that some sort of RF is occurring, and replay it later.

I'm not too familiar with RF overall, but I tried to read the CC1101 documentation by Texas instruments, and disable all the filtering accordingly.

I ended up writing something like the following:

  My_addr = 0;

  wiringPiSetup();			//setup wiringPi library
  cc1100.begin(My_addr);			//setup cc1000 RF IC
  cc1100.set_ISM(0x01);
  cc1100.receive();
  cc1100.set_channel(0x00);
  cc1100.wor_disable();//No wor mode
  cc1100.set_sync_mode(0x00);//No sync word

  cc1100.set_myaddr(0x00);//No address checking
  cc1100.set_data_whitening(0x00);//No data whitening
  cc1100.set_fec(0x00);//No FEC
  cc1100.set_preamble_len(0x00);//0 preamble length

  cc1100.spi_write_register(PKTCTRL1, 0x00);//Disable addr check

  cc1100.show_register_settings();
  for (;;) {
    delay(1);
    uint8_t bytes_in_RXFIFO  = cc1100.spi_read_register(RXBYTES);

    if((bytes_in_RXFIFO & 0x7F)){
      std::cout << "\nBytes to read!";
    }

    std::cout << "\n" << +bytes_in_RXFIFO;
  }

Despite this, it always logs out 0's despite using an RF device near it (and seeing it show on something such as RTL-SDR).

Any idea how I can accomplish this?

Thank you in advance.

[J0han3s]

Were you able to achieve being able to replay certain signal without knowing anything apart from the fact that it is 868mhz. if so how did you do it. I am trying to learn to do the same thing

[adminy]

I think you're supposed to set receive registers after you set up all the options, not before. Everything else looks fine to me. Also set some power otherwise you'll have to stand next to the antena to be receiving anything.