enums.hpp

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#ifndef IV_SRC_COMMS_MODBUS_ENUMS_HPP_
#define IV_SRC_COMMS_MODBUS_ENUMS_HPP_
 
#include "core/assert.hpp"
#include "core/enums.hpp"
 
namespace iv::comms::modbus
{
 
enum class eExceptionCode
{
    IllegalFunction = 0x01,     // Function Code not Supported
    IllegalAddress = 0x02,      // Output Address not exists
    IllegalValue = 0x03,        // Output Value not in Range
    ServerFailure = 0x04,       // Slave Deive Fails to process request
    Acknowledge = 0x05,         // Service Need Long Time to Execute
    ServerBusy = 0x06,          // Server Was Unable to Accept MB Request PDU
    GatewayProblemPath = 0x0A,  // Gateway Path not Available
    GatewayProblemFailed = 0x0B,// Target Device Failed to Response
};
 
enum class eFunctionCode : uint16_t
{
    ReadCoils = 0x01,
    ReadDiscreteInputs = 0x02,
    ReadHoldingRegisters = 0x03,
    ReadInputRegisters = 0x04,
    WriteSingleCoil = 0x05,
    WriteSingleRegister = 0x06,
    WriteCoils = 0x0F,
    WriteRegisters = 0x10
};
 
inline iv::comms::modbus::eRegisterType
functionCodeFromRegisterType(const iv::comms::modbus::eFunctionCode functionCode)
{
    iv::comms::modbus::eRegisterType registerType {};
 
    switch (functionCode)
    {
        case iv::comms::modbus::eFunctionCode::ReadCoils:
        case iv::comms::modbus::eFunctionCode::WriteSingleCoil:
        case iv::comms::modbus::eFunctionCode::WriteCoils:
            registerType = iv::comms::modbus::eRegisterType::CoilStatus;
            break;
 
        case iv::comms::modbus::eFunctionCode::ReadDiscreteInputs:
            registerType = iv::comms::modbus::eRegisterType::InputStatus;
            break;
 
        case iv::comms::modbus::eFunctionCode::ReadInputRegisters:
            registerType = iv::comms::modbus::eRegisterType::InputRegister;
            break;
 
        case iv::comms::modbus::eFunctionCode::ReadHoldingRegisters:
        case iv::comms::modbus::eFunctionCode::WriteSingleRegister:
        case iv::comms::modbus::eFunctionCode::WriteRegisters:
            registerType = iv::comms::modbus::eRegisterType::HoldingRegister;
            break;
 
        default:
            IV_ASSERT_UNREACHABLE();
            break;
    }
 
    return registerType;
}
 
enum class eType
{
    Rtu,
    Tcp,
    Udp
};
 
}// namespace iv::comms::modbus
 
#endif//IV_SRC_COMMS_MODBUS_ENUMS_HPP_