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Support squelch in pocsag (#1415)

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* Support squelch in pocsag

* Revert smooth threshold
This commit is contained in:
Kyle Reed 2023-08-27 15:56:40 -07:00 • committed by GitHub
parent d8930db8af
commit e7e1bedcad
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 100 additions and 78 deletions
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39
firmware/common/pocsag.hpp
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@ -56,23 +56,46 @@ enum MessageType : uint32_t {
ALPHANUMERIC
};
/* Holds error correction arrays. This allows the arrays to
* be freed when POCSAG is not running, saving ~4kb of RAM. */
class EccContainer {
public:
EccContainer();
EccContainer(const EccContainer&) = delete;
EccContainer(EccContainer&&) = delete;
EccContainer& operator=(const EccContainer&) = delete;
EccContainer& operator=(EccContainer&&) = delete;
int error_correct(uint32_t& val);
private:
void setup_ecc();
/* error correction sequence */
uint32_t ecs[32];
uint32_t bch[1025];
};
struct POCSAGState {
uint8_t codeword_index;
uint32_t function;
uint32_t address;
EccContainer* ecc = nullptr;
uint8_t codeword_index = 0;
uint32_t function = 0;
uint32_t address = 0;
Mode mode = STATE_CLEAR;
OutputType out_type = EMPTY;
uint32_t ascii_data;
uint32_t ascii_idx;
uint32_t errors;
std::string output;
uint32_t ascii_data = 0;
uint32_t ascii_idx = 0;
uint32_t errors = 0;
std::string output{};
};
const pocsag::BitRate pocsag_bitrates[4] = {
pocsag::BitRate::FSK512,
pocsag::BitRate::FSK1200,
pocsag::BitRate::FSK2400,
pocsag::BitRate::FSK3200};
pocsag::BitRate::FSK3200,
};
std::string bitrate_str(BitRate bitrate);
std::string flag_str(PacketFlag packetflag);