37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
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// 文件名: src/protocol/modbus/modbus_protocol.h
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#ifndef MODBUS_PROTOCOL_H
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#define MODBUS_PROTOCOL_H
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#include <vector>
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#include <cstdint>
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#include <string>
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#include <stdexcept>
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namespace modbus::protocol {
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// 自定义异常类型，方便上层捕获
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class exception : public std::runtime_error {
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public:
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explicit exception(const std::string& message) : std::runtime_error(message) {}
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};
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/**
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* @brief 创建一个"读保持寄存器" (0x03) 的PDU
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* @param start_address 起始地址
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* @param quantity 要读取的寄存器数量
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* @return 序列化后的PDU字节流 (不含MBAP头)
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*/
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std::vector<uint8_t> create_read_holding_registers_pdu(uint16_t start_address, uint16_t quantity);
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/**
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* @brief 解析一个"读保持寄存器"的响应PDU
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* @param response_pdu 从设备返回的PDU字节流
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* @return 包含所有寄存器值的向量
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* @throws modbus::protocol::exception 如果响应无效 (如异常码、长度错误)
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*/
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std::vector<uint16_t> parse_read_holding_registers_response(const std::vector<uint8_t>& response_pdu);
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} // namespace modbus::protocol
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#endif // MODBUS_PROTOCOL_H
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