/*
    Modbus Library for Arduino
    
    Copyright (C) 2019-2022 Alexander Emelianov (a.m.emelianov@gmail.com)
	https://github.com/emelianov/modbus-esp8266
	This code is licensed under the BSD New License. See LICENSE.txt for more info.
    
Prefixes:
MODBUS_     Global library settings
MODBUSIP_   Settings for TCP and TLS both
MODBUSTCP_  Settings for TCP
MODBUSTLS_  Settings for TLS
MODBUSRTU_  Settings for RTU
MODBUSAPI_  Settings for API
*/
#pragma once

/*
#define MODBUS_GLOBAL_REGS
If defined Modbus registers will be shared across all Modbus* instances.
If not defined each Modbus object will have own registers set.
*/
#define MODBUS_GLOBAL_REGS
//#define MODBUS_FREE_REGS

/*
#define ARDUINO_SAM_DUE_STL
Use STL with Arduino Due. Was able to use with Arduino IDE but not with PlatformIO
Also note STL issue workaround code in Modbus.cpp
*/
#if defined(ARDUINO_SAM_DUE)
//#define ARDUINO_SAM_DUE_STL
#endif

/*
#define MODBUS_USE_STL
If defined C STL will be used.
*/
#if defined(ESP8266) || defined(ESP32) || defined(ARDUINO_ARCH_STM32) || defined(ARDUINO_SAM_DUE_STL)
#define MODBUS_USE_STL
#endif

/*
#define MODBUS_MAX_REGS     32
If defined regisers count will be limited.
*/
// Add limitation for specific STL implementation
#if defined(MODBUS_USE_STL) && (defined(ESP8266) || defined(ESP32))
#undef MODBUS_MAX_REGS
#define MODBUS_MAX_REGS     4000
#endif

#define MODBUS_ADD_REG
//#define MODBUS_STRICT_REG
#define MODBUS_MAX_FRAME   256
//#define MODBUS_STATIC_FRAME
#define MODBUS_MAX_WORDS 0x007D
#define MODBUS_MAX_BITS 0x07D0
#define MODBUS_FILES
#define MODBUS_MAX_FILES 0x270F
#define MODBUSTCP_PORT 	  502
#define MODBUSTLS_PORT 	  802
#define MODBUSIP_MINFRAME 2
#define MODBUSIP_MAXFRAME 200

/*
ModbusTCP and ModbusTLS timeouts
#define MODBUSIP_TIMEOUT 1000
Outgoing request timeout
#define MODBUSIP_CONNECT_TIMEOUT 1000
ESP32 only. Outgoing connection attempt timeout
*/
#define MODBUSIP_TIMEOUT 1000
//#define MODBUSIP_CONNECT_TIMEOUT 1000

#define MODBUSIP_UNIT	  255
#define MODBUSIP_MAX_TRANSACTIONS 16
#if defined(ESP32)
#define MODBUSIP_MAX_CLIENTS    8
#else
#define MODBUSIP_MAX_CLIENTS    4
#endif
#define MODBUSIP_UNIQUE_CLIENTS
#define MODBUSIP_MAX_READMS 100

/*
Use available() instead of accept() to get TCP client
#define MODBUSIP_USE_AVAILABLE
Used to wrap variation in Ethernet/WiFi client API implementations
*/
//#define MODBUSIP_USE_AVAILABLE

#define MODBUSIP_FULL
//#define MODBUSIP_DEBUG
/*
Allows to use DNS names as target
Otherwise IP addresses only must be used
#define MODBUS_IP_USE_DNS
*/
//#define MODBUS_IP_USE_DNS

//#define MODBUSRTU_DEBUG
#define MODBUSRTU_BROADCAST 0
#define MB_RESERVE 248
#define MB_SERIAL_BUFFER 128
#ifndef MODBUSRTU_TIMEOUT
#define MODBUSRTU_TIMEOUT 1000
#endif
#define MODBUSRTU_MAX_READMS 100
/*
#define MODBUSRTU_REDE
Enable using separate pins for RE DE
*/
//#define MODBUSRTU_REDE

// Define for internal use. Do not change.
#define MODBUSRTU_TIMEOUT_US 1000UL * MODBUSRTU_TIMEOUT
#define MODBUSRTU_MAX_READ_US 1000UL * MODBUSRTU_MAX_READMS

/*
#defone MODBUSRTU_FLUSH_DELAY 1
Set extraa delay after serial buffer flush before changing RE/DE pin state.
Specified in chars. That is 1 is means to add delay enough to send 1 char at current port baudrate
*/
//#define MODBUSRTU_FLUSH_DELAY 1

#define MODBUSRTU_REDE_SWITCH_US 1000

#define MODBUSAPI_LEGACY
#define MODBUSAPI_OPTIONAL

// Workaround for RP2040 flush() bug
#if defined(ARDUINO_ARCH_RP2040)
#define MODBUSRTU_FLUSH_DELAY 1
#endif

// Limit resources usage for entry level boards
#if defined(ARDUINO_UNO) || defined(ARDUINO_LEONARDO)
#undef MODBUS_MAX_REGS
#undef MODBUSIP_MAX_TRANSACTIONS
#undef MODBUS_MAX_WORDS
#undef MODBUS_MAX_BITS
#define MODBUS_MAX_REGS     32
#define MODBUSIP_MAX_TRANSACTIONS 4
#define MODBUS_MAX_WORDS 0x0020
#define MODBUS_MAX_BITS 0x0200
#endif