109 lines
4.2 KiB
C++
109 lines
4.2 KiB
C++
#pragma once
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#include <HardwareSerial.h> // Reference the ESP32 built-in serial port library
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#include <Arduino.h>
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#include <CRC16.h>
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#include <memory>
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#define Extension_CH1 1 // Expansion Channel 1
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#define Extension_CH2 2 // Expansion Channel 2
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#define Extension_CH3 3 // Expansion Channel 3
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#define Extension_CH4 4 // Expansion Channel 4
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#define Extension_CH5 5 // Expansion Channel 5
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#define Extension_CH6 6 // Expansion Channel 6
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#define Extension_CH7 7 // Expansion Channel 7
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#define Extension_CH8 8 // Expansion Channel 8
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#define Extension_ALL_ON 9 // Expansion ALL ON
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#define Extension_ALL_OFF 10 // Expansion ALL OFF
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void SetData(uint8_t *data, size_t length); // Send data from the RS485
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void ReadData(uint8_t *buf, uint8_t length); // Data is received over RS485
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void RS485_Analysis(uint8_t *buf); // External relay control
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void RS485_Init(); // Example Initialize the system serial port and RS485
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void RS485_Loop(); // Read RS485 data, parse and control relays
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void RS485Task(void *parameter);
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namespace drivers
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{
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class RS485
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{
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static const uint8_t PORT = 1;
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public:
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RS485(const uint32_t baud, const SerialConfig conf);
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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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std::unique_ptr<HardwareSerial> m_serial;
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};
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class MODBUS : public RS485
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{
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static const uint8_t RESP_HEADER_SIZE = 3;
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static const uint8_t RESP_CRC_SIZE = 2;
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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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// 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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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<uint16_t> &data);
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const bool readBinary(const uint8_t func, const uint8_t device, const uint16_t reg, const uint16_t bits, std::vector<bool> &out);
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const bool readInteger(const uint8_t func, const uint8_t device, const uint16_t reg, const uint16_t num, std::vector<uint16_t> &out);
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const bool writeBinary(const uint8_t func, const uint8_t device, const uint16_t reg, const uint16_t bits, const std::vector<bool> &in);
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const bool writeInteger(const uint8_t func, const uint8_t device, const uint16_t reg, const uint16_t num, const std::vector<uint16_t> &in);
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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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