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#!/usr/bin/env python3
"""Build framer encode responses."""
from pymodbus.framer import (
FramerAscii,
FramerRTU,
FramerSocket,
FramerTLS,
)
from pymodbus.pdu import DecodePDU, ExceptionResponse
from pymodbus.pdu.register_message import (
ReadHoldingRegistersRequest,
ReadHoldingRegistersResponse,
)
def set_calls():
"""Define calls."""
for framer in (FramerAscii, FramerRTU, FramerSocket, FramerTLS):
print(f"framer --> {framer}")
for dev_id in (0, 17, 255):
print(f" dev_id --> {dev_id}")
for tid in (0, 3077):
print(f" tid --> {tid}")
client = framer(DecodePDU(False))
request = ReadHoldingRegistersRequest(address=124, count=2, dev_id=dev_id)
request.transaction_id = tid
result = client.buildFrame(request)
print(f" request --> {result}")
print(f" request --> {result.hex()}")
server = framer(DecodePDU(True))
response = ReadHoldingRegistersResponse(registers=[141,142])
response.dev_id = dev_id
response.transaction_id = tid
result = server.buildFrame(response)
print(f" response --> {result}")
print(f" response --> {result.hex()}")
exception = ExceptionResponse(request.function_code, ExceptionResponse.ILLEGAL_ADDRESS)
exception.transaction_id = tid
exception.dev_id = dev_id
result = server.buildFrame(exception)
print(f" exception --> {result}")
print(f" exception --> {result.hex()}")
set_calls()
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