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36ca06f31b
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Variant for superhet + amplifier
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2024-08-05 20:40:35 +02:00 |
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1fe4633601
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Fix gain, DC offset
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2024-08-03 14:58:10 +02:00 |
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347582cfc1
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Optimize decimation performance
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2024-08-03 09:54:21 +02:00 |
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49cf85006d
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Implement full-blown NCO using DMA sniffer
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2024-08-03 02:36:35 +02:00 |
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f866c97fcb
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Swap SM constant names
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2024-08-03 00:10:12 +02:00 |
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82c1c12195
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Save memory on RX, use it for LO
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2024-08-03 00:08:39 +02:00 |
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5868a1ade9
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Fix PIO code origins handling
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2024-08-03 00:01:22 +02:00 |
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3410740b4a
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Avoid losing sampling timer on reset
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2024-08-02 23:16:00 +02:00 |
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6b444587b6
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Remember frequency correctly
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2024-07-31 23:49:15 +02:00 |
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7382677af8
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Fix initial frequency
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2024-07-31 23:12:36 +02:00 |
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71543c70da
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Increase decimation, remove filter
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2024-07-31 22:54:59 +02:00 |
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2068d3a01f
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Improve bit counting
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2024-07-31 20:53:05 +02:00 |
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0db366b602
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Track vendor/pico-stdio-usb-simple
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2024-07-30 21:01:09 +02:00 |
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f5fb02c190
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Avoid sleeps to prevent low-frequency artifacts
Replace them with busy looks that do not lower the current draw.
It still prevent memory saturation as the loops do not touch memory.
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2024-07-27 15:43:32 +02:00 |
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24d6acdb53
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Improve LO synthesis precision to 17.9 Hz
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2024-07-27 15:43:28 +02:00 |
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f7d2dd3629
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Limit LO drive for less spurs
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2024-07-26 21:37:15 +02:00 |
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f294b09c98
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Refactor sample processing
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2024-07-23 21:51:48 +02:00 |
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178ba7bee0
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Clear DMA chaining before abort
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2024-07-23 20:30:54 +02:00 |
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63ca3c6439
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Improve the FIR filter a bit
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2024-07-23 20:29:52 +02:00 |
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884d84bbf9
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Fix gain
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2024-07-23 20:15:43 +02:00 |
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5a9a0f7acc
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Move gain application to limit clipping
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2024-07-22 20:39:40 +02:00 |
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b52f772845
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Increase queue length to avoid dropping
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2024-07-22 20:37:13 +02:00 |
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8974b812f2
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Prevent too tight loop on the 1st core
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2024-07-22 20:37:13 +02:00 |
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3054904768
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Lower the FB resistor value
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2024-07-22 20:37:13 +02:00 |
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821cd9189d
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Move feedback pin farther to prevent crosstalk
Now this was just silly of me.
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2024-07-22 20:37:13 +02:00 |
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9997b63c7e
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Update README
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2024-07-22 20:37:13 +02:00 |
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518d6f55db
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Fix gain
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2024-07-22 20:37:13 +02:00 |
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4e6a29abbc
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Replace BPF with LPF after I/Q conversion
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2024-07-18 12:15:43 +02:00 |
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09b4c2c169
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Use a more stable bias
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2024-07-17 22:20:45 +02:00 |
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34a4df9b1a
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Use slightly harder bias to avoid clipping
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2024-07-17 20:29:35 +02:00 |
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dd66571945
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Sample at full speed
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2024-07-17 20:25:50 +02:00 |
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bc96b5a9ee
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Implement a fast band-pass filter for better SNR
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2024-07-17 20:04:45 +02:00 |
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0e1fc91279
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Remove LO dithering for better SNR
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2024-07-17 18:58:28 +02:00 |
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eaad670abb
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Adjust FB slew rate for better SNR
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2024-07-17 11:43:30 +02:00 |
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574c474c6e
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Reduce jitter and use HPF to improve SNR
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2024-07-16 19:24:16 +02:00 |
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38b7ec34f6
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Experiment with a superhet approach
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2024-07-16 11:03:22 +02:00 |
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46c061f177
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Use LNA gain options to control bias strength
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2024-07-10 22:35:49 +02:00 |
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c188d809df
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Randomize bias delay to reduce artifacts
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2024-07-10 20:32:47 +02:00 |
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57e36203aa
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Tweak LO dithering for better performance
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2024-07-10 10:21:04 +02:00 |
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2fc01539f0
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grc: fix data workflow
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2024-07-10 10:20:28 +02:00 |
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8a9a927c8b
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grc: remove WBFM gain
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2024-07-10 10:13:45 +02:00 |
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1c3ec5cb49
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Allow more precise tuning
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2024-07-10 10:10:29 +02:00 |
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12c53377f6
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Use shorter queue to decrease latency
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2024-07-10 10:10:13 +02:00 |
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56aff439f7
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Dither LO phase to reduce artifacts
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2024-07-09 20:46:17 +02:00 |
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ff6001b0da
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Fix DC offset error
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2024-07-02 22:29:34 +02:00 |
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cb47fd3aa5
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Optimize frequency shift
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2024-07-02 13:00:14 +02:00 |
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e694692a8c
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Add missing cast
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2024-07-02 12:13:54 +02:00 |
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a88ff12555
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Remove DC offset filter
Since we are off-tuning, we no longer need it.
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2024-07-02 01:57:20 +02:00 |
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6e70ef1433
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Implement fixed off-tuning
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2024-07-02 01:56:26 +02:00 |
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7f98ab98f0
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bridge: make device path a parameter
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2024-06-25 18:10:06 +02:00 |
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