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POCSAG Processor Rewrite (#1437)

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* WIP Refactoring
* WordExtractor building
* Fix buffer sizes and squelch execute
* Move impls to cpp file
* Baud indicator
* WIP new bit extractor
* New approach for bit extraction.
* Code fit and finish
* Fix case on button
* Cleanup
* Adjust rate miss threshold
* Fix count bits error calculation.
This commit is contained in:
Kyle Reed 2023-09-08 10:41:09 -07:00 • committed by GitHub
parent 9525738118
commit 31e8019642
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GPG key ID: 4AEE18F83AFDEB23
13 changed files with 648 additions and 534 deletions
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firmware/common/pocsag.cpp
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@ -412,7 +412,7 @@ bool pocsag_decode_batch(const POCSAGPacket& batch, POCSAGState& state) {
state.ascii_idx -= 7;
char ascii_char = (state.ascii_data >> state.ascii_idx) & 0x7F;
// Bottom's up (reverse the bits).
// Reverse the bits. (TODO: __RBIT?)
ascii_char = (ascii_char & 0xF0) >> 4 | (ascii_char & 0x0F) << 4; // 01234567 -> 45670123
ascii_char = (ascii_char & 0xCC) >> 2 | (ascii_char & 0x33) << 2; // 45670123 -> 67452301
ascii_char = (ascii_char & 0xAA) >> 2 | (ascii_char & 0x55); // 67452301 -> 76543210