nBus-bridge/Core/Inc/NbusSlave.h

/**
 * @file AppBridge.h
 * @brief nBus Slave module declaration.
 * @date Nov 26, 2025
 * @author Juraj Dudak, Matus Necas
 */
#ifndef SRC_APPSLAVE_H_
#define SRC_APPSLAVE_H_


#include "inttypes.h"
#include "dataframe.h"
#include "NbusCommunicator.h"


/** Macro for module-only address. */
#define SLAVE_ADDRESS_MODULE   0


/** Class for nBus slave communication */
class NbusSlave {

private:
	NbusCommunicator* _communicator{nullptr};	///< hardware bus communicator
	Nbus_PDU_t _pdu{0, 0, FC_ECHO}; 			///< slave PDU
	uint8_t _sensor_cache[16]{0};				///< sensor temporary data
	uint8_t _sensor_count{0};					///< number of sensors

public:
	/** Set nBus communicator
	 * @param nbus_comm: communicator to set
	 */
	void setCommunicator(NbusCommunicator* nbus_comm);

	/** Set nBus address
	 * @param addr: address to set
	 */
	void setAddress(uint8_t addr);

	/** Get slave active status
	 * @return: active status (1 = active, 0 = inactive)
	 */
	bool isActive();

	/** Get nBus module address
     * @return: actual address (0 if not set)
	 */
	uint8_t getModuleAddress();

	/** Send nBus request and get sensor count
	 * @param check_hw: 1 = load from bus, 0 = use local cache
	 * @return: response data frame
	 */
	uint8_t nbusSlaveCmd_getSensorCnt(bool check_hw);

	/** Send any nBus request and get response
	 * @param slave_frame: data to send
	 * @return: response data frame
	 */
	DataFrame * nbusSlaveCmd_processRequest(DataFrame *slave_frame);

	/** Send nBus request and get sensor data
	 * @return: response data frame
	 */
	DataFrame * nbusSlaveCmd_getData();
};


#ifdef __cplusplus
extern "C"
{
#endif


#ifdef __cplusplus
}
#endif

#endif /* SRC_APPSLAVE_H_ */