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#!/usr/bin/env python
"""
Pymodbus Synchronous Serial Forwarder
--------------------------------------------------------------------------
We basically set the context for the tcp serial server to be that of a
serial client! This is just an example of how clever you can be with
the data context (basically anything can become a modbus device).
"""
# --------------------------------------------------------------------------- #
# import the various server implementations
# --------------------------------------------------------------------------- #
from pymodbus.server.sync import StartTcpServer as StartServer
from pymodbus.client.sync import ModbusSerialClient as ModbusClient
from pymodbus.datastore.remote import RemoteSlaveContext
from pymodbus.datastore import ModbusSlaveContext, ModbusServerContext
# --------------------------------------------------------------------------- #
# configure the service logging
# --------------------------------------------------------------------------- #
import logging
logging.basicConfig()
log = logging.getLogger()
log.setLevel(logging.DEBUG)
def run_serial_forwarder():
# ----------------------------------------------------------------------- #
# initialize the datastore(serial client)
# ----------------------------------------------------------------------- #
client = ModbusClient(method='rtu', port='/dev/ptyp0')
store = RemoteSlaveContext(client)
context = ModbusServerContext(slaves=store, single=True)
# ----------------------------------------------------------------------- #
# run the server you want
# ----------------------------------------------------------------------- #
StartServer(context, address=("localhost", 5020))
if __name__ == "__main__":
run_serial_forwarder()
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