AX.25 BPSK loopback using gr-satellites

AX.25 over BPSK, transmitted and received in one flowgraph
Author Daniel Estevez
Category gr-satellites
Blocks 20
Connections 15
File gr-satellites/satellites_ax25_bpsk.grc
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Blocks used

Block	Module	Used
Variable	`GNU Radio`	3
Binary Slicer	`GNU Radio`	1
BPSK Demodulator	`gr-satellites`	1
Constellation Modulator	`GNU Radio`	1
Constellation Object	`GNU Radio`	1
HDLC Deframer	`gr-satellites`	1
HDLC Framer	`gr-satellites`	1
Message Debug	`GNU Radio`	1
NRZI Decode	`gr-satellites`	1
NRZI Encode	`gr-satellites`	1
PDU To Stream	`GNU Radio`	1
QT GUI Frequency Sink	`GNU Radio`	1
QT GUI Time Sink	`GNU Radio`	1
Stream to Tagged Stream	`GNU Radio`	1
Tagged Stream to PDU	`GNU Radio`	1
Throttle	`GNU Radio`	1
Unpacked to Packed	`GNU Radio`	1
Vector Source	`GNU Radio`	1
Flowgraph source

gr-satellites/satellites_ax25_bpsk.grc
options:
    parameters:
        author: Daniel Estevez
        copyright: ''
        description: AX.25 over BPSK, transmitted and received in one flowgraph
        generate_options: qt_gui
        id: AX_25_BPSK_loopback_using_gr_satellites
        title: AX.25 BPSK loopback using gr-satellites
    states:
        coordinate: [10, 10]
        rotation: 0
        state: enabled
blocks:
-   name: baudrate
    id: variable
    parameters:
        comment: ''
        value: samp_rate/samp_per_sym
    states:
        coordinate: [600, 10]
        rotation: 0
        state: enabled
-   name: samp_per_sym
    id: variable
    parameters:
        comment: ''
        value: '8'
    states:
        coordinate: [770, 10]
        rotation: 0
        state: enabled
-   name: samp_rate
    id: variable
    parameters:
        comment: ''
        value: '9600'
    states:
        coordinate: [970, 10]
        rotation: 0
        state: enabled
-   name: bpsk_const
    id: variable_constellation
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        const_points: '[]'
        dims: '1'
        normalization: digital.constellation.AMPLITUDE_NORMALIZATION
        npwr: '1'
        precision: '8'
        rot_sym: '2'
        soft_dec_lut: '"auto"'
        sym_map: '[]'
        type: bpsk
    states:
        coordinate: [1140, 10]
        rotation: 0
        state: enabled
-   name: bpsk_demod
    id: satellites_bpsk_demodulator
    parameters:
        affinity: ''
        alias: ''
        baudrate: baudrate
        comment: ''
        differential: 'False'
        f_offset: '0'
        iq: 'True'
        manchester: 'False'
        maxoutbuf: '0'
        minoutbuf: '0'
        options: '""'
        samp_rate: samp_rate
    states:
        coordinate: [1390, 430]
        rotation: 0
        state: enabled
-   name: frame_tagger
    id: blocks_stream_to_tagged_stream
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        len_tag_key: packet_len
        maxoutbuf: '0'
        minoutbuf: '0'
        packet_len: '31'
        type: byte
        vlen: '1'
    states:
        coordinate: [690, 270]
        rotation: 0
        state: enabled
-   name: framed_bits
    id: pdu_pdu_to_stream_x
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        depth: '4096'
        early_behavior: pdu.EARLY_BURST_APPEND
        maxoutbuf: '0'
        minoutbuf: '0'
        type: byte
    states:
        coordinate: [100, 460]
        rotation: 0
        state: enabled
-   name: frames
    id: blocks_message_debug
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        en_uvec: 'True'
        log_level: info
    states:
        coordinate: [1180, 770]
        rotation: 0
        state: enabled
-   name: hdlc_deframer
    id: satellites_hdlc_deframer
    parameters:
        affinity: ''
        alias: ''
        check_fcs: 'True'
        comment: ''
        max_length: '10000'
        maxoutbuf: '0'
        minoutbuf: '0'
    states:
        coordinate: [690, 860]
        rotation: 0
        state: enabled
-   name: hdlc_framer
    id: satellites_hdlc_framer
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        maxoutbuf: '0'
        minoutbuf: '0'
        postamble_bytes: '7'
        preamble_bytes: '50'
    states:
        coordinate: [1450, 270]
        rotation: 0
        state: enabled
-   name: modulator
    id: digital_constellation_modulator
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        constellation: bpsk_const
        differential: 'False'
        excess_bw: '0.35'
        log: 'False'
        maxoutbuf: '0'
        minoutbuf: '0'
        samples_per_symbol: samp_per_sym
        truncate: 'False'
        verbose: 'False'
    states:
        coordinate: [1010, 410]
        rotation: 0
        state: enabled
-   name: nrzi_decode
    id: satellites_nrzi_decode
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        maxoutbuf: '0'
        minoutbuf: '0'
    states:
        coordinate: [440, 860]
        rotation: 0
        state: enabled
-   name: nrzi_encode
    id: satellites_nrzi_encode
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        maxoutbuf: '0'
        minoutbuf: '0'
    states:
        coordinate: [430, 460]
        rotation: 0
        state: enabled
-   name: pack
    id: blocks_unpacked_to_packed_xx
    parameters:
        affinity: ''
        alias: ''
        bits_per_chunk: '1'
        comment: ''
        endianness: gr.GR_MSB_FIRST
        maxoutbuf: '0'
        minoutbuf: '0'
        num_ports: '1'
        type: byte
    states:
        coordinate: [680, 460]
        rotation: 0
        state: enabled
-   name: payload
    id: blocks_vector_source_x
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        maxoutbuf: '0'
        minoutbuf: '0'
        repeat: 'True'
        tags: '[]'
        type: byte
        vector: '[130, 160, 144, 100, 96, 100, 96, 154, 96, 168, 144, 152, 64, 97, 3, 240, 72, 101, 108, 108, 111, 32, 102, 114, 111, 109, 32, 66, 80, 83, 75]'
        vlen: '1'
    states:
        coordinate: [10, 260]
        rotation: 0
        state: enabled
-   name: payload_throttle
    id: blocks_throttle2
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        ignoretag: 'True'
        limit: auto
        maximum: '0.1'
        maxoutbuf: '0'
        minoutbuf: '0'
        samples_per_second: samp_rate
        type: byte
        vlen: '1'
    states:
        coordinate: [360, 250]
        rotation: 0
        state: enabled
-   name: slicer
    id: digital_binary_slicer_fb
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        maxoutbuf: '0'
        minoutbuf: '0'
    states:
        coordinate: [80, 860]
        rotation: 0
        state: enabled
-   name: spectrum
    id: qtgui_freq_sink_x
    parameters:
        affinity: ''
        alias: ''
        alpha1: '1'
        autoscale: 'False'
        average: '0.2'
        axislabels: 'True'
        color1: '"blue"'
        comment: ''
        ctrlpanel: 'False'
        fc: '0'
        fftsize: '2048'
        grid: 'True'
        label1: BPSK signal
        legend: 'True'
        marker1: '-1'
        maxoutbuf: '0'
        minoutbuf: '0'
        name: Transmitted BPSK spectrum
        samp_rate: samp_rate
        style1: '1'
        tr_chan: '0'
        tr_level: '0'
        tr_mode: qtgui.TRIG_MODE_FREE
        tr_tag: ''
        update_time: '0.1'
        width1: '1'
        ymax: '10'
        ymin: '-100'
    states:
        coordinate: [1390, 590]
        rotation: 0
        state: enabled
-   name: symbol_scope
    id: qtgui_time_sink_x
    parameters:
        affinity: ''
        alias: ''
        alpha1: '1'
        alpha2: '1'
        autoscale: 'True'
        axislabels: 'True'
        color1: blue
        color2: red
        comment: ''
        ctrlpanel: 'False'
        grid: 'False'
        label1: Signal 1
        label2: Signal 2
        legend: 'True'
        marker1: '0'
        marker2: '0'
        name: Recovered soft symbols
        samp_rate: baudrate
        size: '256'
        stemplot: 'False'
        style1: '1'
        style2: '1'
        tr_chan: '0'
        tr_delay: '0'
        tr_level: '0'
        tr_mode: qtgui.TRIG_MODE_FREE
        tr_slope: qtgui.TRIG_SLOPE_POS
        tr_tag: ''
        type: float
        update_time: '0.1'
        width1: '1'
        width2: '1'
        ylabel: Amplitude
        ymax: '2'
        ymin: '-2'
        yunit: ''
    states:
        coordinate: [80, 960]
        rotation: 0
        state: enabled
-   name: to_pdu
    id: pdu_tagged_stream_to_pdu
    parameters:
        affinity: ''
        alias: ''
        comment: ''
        maxoutbuf: '0'
        minoutbuf: '0'
        tag: packet_len
        type: byte
    states:
        coordinate: [1070, 270]
        rotation: 0
        state: enabled
connections:
- [bpsk_demod, '0', slicer, '0']
- [bpsk_demod, '0', symbol_scope, '0']
- [frame_tagger, '0', to_pdu, '0']
- [framed_bits, '0', nrzi_encode, '0']
-   src_blk_id: hdlc_deframer
    src_port_id: out
    snk_blk_id: frames
    snk_port_id: print_pdu
-   src_blk_id: hdlc_framer
    src_port_id: out
    snk_blk_id: framed_bits
    snk_port_id: pdus
- [modulator, '0', bpsk_demod, '0']
- [modulator, '0', spectrum, '0']
- [nrzi_decode, '0', hdlc_deframer, '0']
- [nrzi_encode, '0', pack, '0']
- [pack, '0', modulator, '0']
- [payload, '0', payload_throttle, '0']
- [payload_throttle, '0', frame_tagger, '0']
- [slicer, '0', nrzi_decode, '0']
-   src_blk_id: to_pdu
    src_port_id: pdus
    snk_blk_id: hdlc_framer
    snk_port_id: in
metadata:
    file_format: 2
    grc_version: 3.11.0.0