id: apollo_bpsk_demod
label: Apollo BPSK Demod
category: '[Apollo USB]'
flags: [python]

parameters:
- id: symbol_rate
  label: Symbol Rate (bps)
  dtype: real
  default: '51200'
- id: sample_rate
  label: Sample Rate (Hz)
  dtype: real
  default: '5120000'
- id: loop_bw
  label: Loop Bandwidth
  dtype: real
  default: '0.045'

inputs:
- label: in
  domain: stream
  dtype: complex

outputs:
- label: out
  domain: stream
  dtype: byte

templates:
  imports: from apollo import bpsk_demod
  make: >-
    apollo.bpsk_demod.bpsk_demod(
      symbol_rate=${symbol_rate},
      sample_rate=${sample_rate},
      loop_bw=${loop_bw})

documentation: |-
  Apollo BPSK Demodulator

  Recovers NRZ bit stream from a BPSK-modulated subcarrier at baseband.
  Uses Costas loop for 180-degree phase ambiguity resolution and
  integrate-and-dump for symbol timing.

  Parameters:
    symbol_rate: Bit rate in bps (51200 high, 1600 low)
    sample_rate: Input sample rate in Hz
    loop_bw: Carrier/timing recovery loop bandwidth

file_format: 1