cs_UartConnection.h

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/*
 * Author: Crownstone Team
 * Copyright: Crownstone (https://crownstone.rocks)
 * Date: Sep 20, 2020
 * License: LGPLv3+, Apache License 2.0, and/or MIT (triple-licensed)
 */
 
#pragma once
 
#include <events/cs_EventListener.h>
#include <protocol/cs_UartProtocol.h>
 
class UartConnection : EventListener {
public:
    static UartConnection& getInstance() {
        static UartConnection instance;
        return instance;
    }
 
    void init();
 
    bool isAlive();
 
    bool isEncryptedAlive();
 
    const uart_msg_status_reply_t& getSelfStatus();
 
    const uart_msg_status_user_t& getUserStatus();
 
    void onHello(const uart_msg_status_user_flags_t& flags);
 
    void onHeartBeat(uint16_t timeoutSeconds, bool encrypted);
 
    void onUserStatus(const uart_msg_status_user_t& status);
 
    void onSessionNonce(const uart_msg_session_nonce_t& sessionNonce);
 
    cs_ret_code_t getSessionNonceTx(cs_data_t data);
 
    cs_ret_code_t getSessionNonceRx(cs_data_t data);
 
private:
    UartConnection();
 
    UartConnection(UartConnection const&) = delete;
 
    void operator=(UartConnection const&) = delete;
 
    uart_msg_status_reply_t _status;
 
    uart_msg_status_user_t _userStatus;
 
    bool _isConnectionAlive              = false;
 
    bool _isConnectionEncrypted          = false;
 
    uint32_t _connectionTimeoutCountdown = 0;
 
    uint8_t _sessionNonceRx[SESSION_NONCE_LENGTH];
 
    uint8_t _sessionNonceTx[SESSION_NONCE_LENGTH];
 
    bool _sessionNonceValid                = false;
 
    uint32_t _sessionNonceTimeoutCountdown = 0;
 
    void onTick();
 
    void handleEvent(event_t& event);
};