unit_SYN531R.hpp

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/*
 * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef M5_UNIT_RF433_UNIT_SYN531R_HPP
#define M5_UNIT_RF433_UNIT_SYN531R_HPP
 
#include <M5UnitComponent.hpp>
#include <memory>
#include <vector>
#include "codec/m5_codec.hpp"
 
namespace m5 {
namespace unit {
 
class UnitSYN531R : public Component {
    M5_UNIT_COMPONENT_HPP_BUILDER(UnitSYN531R, 0x00);
 
public:
    using container_type = rf433::container_type;
 
    struct config_t {
        uint8_t max_payload_size
        {
#if defined(M5_UNIT_UNIFIED_USING_RMT_V2)
            255
#else
            23
#endif
        };
    };
 
 
    inline config_t config()
    {
        return _cfg;
    }
    inline void config(const config_t& cfg)
    {
        _cfg = cfg;
    }
 
    UnitSYN531R() : Component(DEFAULT_ADDRESS)
    {
    }
    virtual ~UnitSYN531R()
    {
    }
 
    virtual bool begin() override;
    virtual void update(const bool force = false) override;
 
    inline size_t available() const
    {
        return _data.size();
    }
    inline bool empty() const
    {
        return _data.empty();
    }
    inline uint8_t oldest() const
    {
        return !_data.empty() ? _data.front() : 0;
    }
    inline uint8_t latest() const
    {
        return !_data.empty() ? _data.back() : 0;
    }
    inline void discard()
    {
        if (!_data.empty()) {
            _data.erase(_data.begin());
        }
    }
    inline void flush()
    {
        _data.clear();
    }
 
    inline const container_type& container() const
    {
        return _data;
    }
 
    inline rf433::ProtocolCodec& codec()
    {
        if (_codec) {
            return *_codec;
        }
        return _default_codec;
    }
    inline const rf433::ProtocolCodec& codec() const
    {
        if (_codec) {
            return *_codec;
        }
        return _default_codec;
    }
    void setCodec(rf433::ProtocolCodec& codec)
    {
        _codec = (&codec == &_default_codec) ? nullptr : &codec;
    }
    void resetCodec()
    {
        _codec = nullptr;
    }
 
protected:
    bool read_data();
 
private:
    struct FreeDeleter {
        void operator()(uint8_t* p) const
        {
            free(p);
        }
    };
    rf433::M5Codec _default_codec{};
    rf433::ProtocolCodec* _codec{};  // nullptr: use _default_codec
    container_type _data{};
    std::unique_ptr<uint8_t[], FreeDeleter> _rx_buffer{};
    size_t _rx_buffer_size{};
    config_t _cfg{};
};
 
}  // namespace unit
}  // namespace m5
#endif