Ryan Malloy
c839d225a8
GNU Radio Out-of-Tree module providing: - Complete TX chain: PHYEncode → FrameGen → CSSMod - Complete RX chain: CSSDemod → FrameSync → PHYDecode - NETWORKID extraction/encoding (0-255 range) - All SF (7-12) and CR (4/5-4/8) combinations - Loopback tested with 24/24 configurations passing Key features: - Fractional SFD (2.25 downchirp) handling - Gray encode/decode with proper inverse operations - gr-lora_sdr compatible decode modes - GRC block definitions and example flowgraphs - Comprehensive documentation Discovered RYLR998 sync word mapping: sync_bin_1 = (NETWORKID >> 4) * 8 sync_bin_2 = (NETWORKID & 0x0F) * 8
159 lines
5.1 KiB
XML
159 lines
5.1 KiB
XML
<?xml version="1.0"?>
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<flow_graph>
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<timestamp>2024-01-01 00:00:00</timestamp>
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<block>
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<key>options</key>
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<param>
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<key>id</key>
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<value>rylr998_bladerf_rx</value>
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</param>
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<param>
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<key>title</key>
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<value>RYLR998 BladeRF Receiver</value>
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</param>
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<param>
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<key>author</key>
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<value>gr-rylr998</value>
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</param>
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<param>
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<key>description</key>
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<value>Receive and decode RYLR998 LoRa frames via BladeRF SDR</value>
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</param>
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<param>
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<key>generate_options</key>
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<value>qt_gui</value>
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</param>
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</block>
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<!-- Variables -->
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<block>
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<key>variable</key>
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<param><key>id</key><value>sf</value></param>
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<param><key>value</key><value>9</value></param>
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</block>
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<block>
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<key>variable</key>
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<param><key>id</key><value>sample_rate</value></param>
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<param><key>value</key><value>250e3</value></param>
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</block>
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<block>
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<key>variable</key>
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<param><key>id</key><value>bw</value></param>
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<param><key>value</key><value>125e3</value></param>
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</block>
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<block>
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<key>variable</key>
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<param><key>id</key><value>center_freq</value></param>
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<param><key>value</key><value>915e6</value></param>
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</block>
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<block>
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<key>variable</key>
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<param><key>id</key><value>networkid</value></param>
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<param><key>value</key><value>18</value></param>
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</block>
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<block>
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<key>variable</key>
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<param><key>id</key><value>rf_gain</value></param>
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<param><key>value</key><value>30</value></param>
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</block>
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<!-- GUI Controls -->
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<block>
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<key>variable_qtgui_range</key>
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<param><key>id</key><value>gain_slider</value></param>
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<param><key>label</key><value>RF Gain</value></param>
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<param><key>value</key><value>rf_gain</value></param>
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<param><key>start</key><value>0</value></param>
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<param><key>stop</key><value>60</value></param>
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<param><key>step</key><value>1</value></param>
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</block>
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<!-- BladeRF Source (using SoapySDR) -->
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<block>
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<key>soapy_bladerf_source</key>
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<param><key>id</key><value>bladerf_source</value></param>
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<param><key>dev_args</key><value></value></param>
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<param><key>samp_rate</key><value>sample_rate</value></param>
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<param><key>center_freq0</key><value>center_freq</value></param>
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<param><key>bandwidth0</key><value>bw</value></param>
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<param><key>gain0</key><value>gain_slider</value></param>
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</block>
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<!-- Alternative: osmocom Source for broader SDR support -->
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<!-- Uncomment to use instead of soapy_bladerf_source -->
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<!--
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<block>
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<key>osmosdr_source</key>
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<param><key>id</key><value>osmocom_source</value></param>
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<param><key>args</key><value>bladerf=0</value></param>
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<param><key>sample_rate</key><value>sample_rate</value></param>
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<param><key>freq0</key><value>center_freq</value></param>
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<param><key>gain0</key><value>rf_gain</value></param>
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</block>
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-->
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<!-- RYLR998 Receiver -->
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<block>
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<key>rylr998_rx</key>
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<param><key>id</key><value>rylr998_rx_0</value></param>
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<param><key>sf</key><value>sf</value></param>
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<param><key>sample_rate</key><value>sample_rate</value></param>
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<param><key>bw</key><value>bw</value></param>
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<param><key>cr</key><value>1</value></param>
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<param><key>has_crc</key><value>True</value></param>
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<param><key>expected_networkid</key><value>networkid</value></param>
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</block>
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<!-- Message Debug -->
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<block>
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<key>blocks_message_debug</key>
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<param><key>id</key><value>message_debug</value></param>
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<param><key>en_uvec</key><value>True</value></param>
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</block>
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<!-- QT GUI Displays -->
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<block>
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<key>qtgui_waterfall_sink_x</key>
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<param><key>id</key><value>waterfall</value></param>
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<param><key>fft_size</key><value>1024</value></param>
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<param><key>samp_rate</key><value>sample_rate</value></param>
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<param><key>center_freq</key><value>center_freq</value></param>
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<param><key>name</key><value>Waterfall</value></param>
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</block>
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<block>
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<key>qtgui_freq_sink_x</key>
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<param><key>id</key><value>freq_sink</value></param>
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<param><key>fft_size</key><value>1024</value></param>
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<param><key>samp_rate</key><value>sample_rate</value></param>
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<param><key>center_freq</key><value>center_freq</value></param>
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<param><key>name</key><value>Spectrum</value></param>
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</block>
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<!-- Connections -->
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<connection>
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<source_block_id>bladerf_source</source_block_id>
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<sink_block_id>rylr998_rx_0</sink_block_id>
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<source_key>0</source_key>
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<sink_key>in</sink_key>
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</connection>
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<connection>
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<source_block_id>bladerf_source</source_block_id>
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<sink_block_id>waterfall</sink_block_id>
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<source_key>0</source_key>
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<sink_key>0</sink_key>
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</connection>
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<connection>
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<source_block_id>bladerf_source</source_block_id>
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<sink_block_id>freq_sink</sink_block_id>
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<source_key>0</source_key>
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<sink_key>0</sink_key>
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</connection>
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<connection>
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<source_block_id>rylr998_rx_0</source_block_id>
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<sink_block_id>message_debug</sink_block_id>
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<source_key>payload</source_key>
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<sink_key>print</sink_key>
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</connection>
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</flow_graph>
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