107 lines
3.8 KiB
C++
107 lines
3.8 KiB
C++
#pragma once
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#define DEBUGLOG_DEFAULT_LOG_LEVEL_INFO
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#include <DebugLog.h>
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#include <Arduino.h>
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#include <HardwareSerial.h> // Reference the ESP32 built-in serial port library
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#include <CRC16.h>
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#include <memory>
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#include <mutex>
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namespace drivers
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{
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class RS485
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{
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const uint8_t c_port = 1;
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public:
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RS485(const uint32_t baud, const SerialConfig conf);
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RS485(const RS485 &) = delete; // remove copy constructors
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RS485 &operator=(const RS485 &) = delete;
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const bool write(const std::vector<uint8_t> data);
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const bool readAll(std::vector<uint8_t> &data);
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const bool readN(const uint16_t nBytes, std::vector<uint8_t> &data);
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const bool readUntil(const uint8_t ch, std::vector<uint8_t> &data);
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private:
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HardwareSerial &m_serial;
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};
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class MODBUS : private RS485
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{
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const uint8_t c_respHeaderSize = 3;
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const uint8_t c_respCrcSize = 2;
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const uint32_t c_minDelay = 250;
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typedef struct
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{
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uint8_t device;
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uint8_t func;
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uint16_t reg;
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uint16_t data;
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} req_t;
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typedef struct
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{
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uint8_t device;
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uint8_t func;
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uint16_t reg;
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uint16_t qty;
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uint8_t bytes;
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} req_multi_t;
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typedef req_t resp_t;
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typedef uint16_t crc_t;
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public:
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MODBUS(const uint32_t baud, const SerialConfig conf);
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MODBUS(const MODBUS &) = delete; // remove copy constructors
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MODBUS &operator=(const MODBUS &) = delete;
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// Get transaction lock
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std::unique_lock<std::mutex> getLock();
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std::mutex &getMutex();
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// Func 0x01
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const bool readCoils(const uint8_t device, const uint16_t reg, const uint16_t num, std::vector<bool> &coils);
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// Func 0x02
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const bool readInputs(const uint8_t device, const uint16_t reg, const uint8_t num, std::vector<bool> &inputs);
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// Func 0x03
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const bool readHoldingRegisters(const uint8_t device, const uint16_t reg, const uint8_t num, std::vector<uint16_t> &values);
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// Func 0x04
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const bool readInputRegisters(const uint8_t device, const uint16_t reg, const uint8_t num, std::vector<uint16_t> &values);
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// Func 0x05
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const bool writeCoil(const uint8_t device, const uint16_t coil, const bool value);
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// Func 0x06
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const bool writeRegister(const uint8_t device, const uint16_t reg, const uint16_t value);
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// Func 0x0F
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const bool writeCoils(const uint8_t device, const uint16_t coils, const std::vector<bool> &values);
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// Func 0x10
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const bool writeRegisters(const uint8_t device, const uint16_t reg, const std::vector<uint16_t> &values);
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private:
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CRC16 m_crc;
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std::mutex m_mutex;
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uint8_t m_lastDevice;
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uint32_t m_lastAccess;
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void delayAccess(const uint8_t device);
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const std::vector<uint8_t> singleRequest(const uint8_t device, const uint8_t func, const uint16_t reg, const uint16_t data);
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const std::vector<uint8_t> multiRequest(const uint8_t device, const uint8_t func, const uint16_t reg, const uint16_t qty, const std::vector<uint8_t> &data);
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const bool readBinary(const uint8_t device, const uint8_t func, const uint16_t reg, const uint16_t bits, std::vector<bool> &out);
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const bool readInteger(const uint8_t device, const uint8_t func, const uint16_t reg, const uint16_t num, std::vector<uint16_t> &out);
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const bool writeBinary(const uint8_t device, const uint8_t func, const uint16_t reg, const std::vector<bool> &in);
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const bool writeInteger(const uint8_t device, const uint8_t func, const uint16_t reg, const std::vector<uint16_t> &in, const bool multi);
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const bool verifyCrc(const std::vector<uint8_t> &data);
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};
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}
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