From 4696cd4d533dbacf705bb0d67709c380d32723a1 Mon Sep 17 00:00:00 2001 From: mazocode Date: Wed, 11 Sep 2024 04:12:00 +0200 Subject: [PATCH] feat: Support register write via rpc topic --- Makefile | 3 +- modbus2mqtt.py | 22 +++++++++--- requirements.txt | 90 ++++++++++++++++++++++++------------------------ 3 files changed, 65 insertions(+), 50 deletions(-) diff --git a/Makefile b/Makefile index aa78c69..a0ffc02 100644 --- a/Makefile +++ b/Makefile @@ -3,7 +3,8 @@ VERSION = $(shell poetry version -s) GITHUBUSER = mazocode -ARCHS = linux/amd64 linux/arm linux/arm/v6 linux/arm/v7 linux/arm64/v8 +#ARCHS = linux/amd64 linux/arm linux/arm/v6 linux/arm/v7 linux/arm64/v8 +ARCHS = linux/amd64 linux/arm/v7 linux/arm64/v8 null = space = $(null) $(null) diff --git a/modbus2mqtt.py b/modbus2mqtt.py index 11df3bf..279ed10 100755 --- a/modbus2mqtt.py +++ b/modbus2mqtt.py @@ -15,7 +15,7 @@ from pymodbus.exceptions import ModbusException from pymodbus.pdu import ExceptionResponse from pymodbus.constants import Endian -from pymodbus.payload import BinaryPayloadDecoder +from pymodbus.payload import BinaryPayloadDecoder, BinaryPayloadBuilder from pymodbus.transaction import ModbusSocketFramer from paho.mqtt import client as mqtt_client @@ -221,7 +221,7 @@ def set_value(self, src, params): value = False addr = self.start + int(coil["bit"]) - 1 - log.debug(f"Writing coil at address {addr} with value {value}.") + log.info(f"Writing coil at address {addr} with value {value}.") rr = src.client.write_coil(addr, value, slave=unitid) if not rr: raise ModbusException("Received empty modbus respone.") @@ -323,9 +323,23 @@ def set_value(self, src, params): # Can't set unknown state return False + wordcount = 1 + bo = Endian.BIG + if self.littleendian: + bo = Endian.LITTLE + + builder = BinaryPayloadBuilder(byteorder=bo, wordorder=bo) + payload = None + if self.format == "float": + builder.add_32bit_float(float(value)) + payload = builder.to_registers() + wordcount = 2 + else: + payload = int(value) + addr = self.start - log.debug(f"Writing register at address {addr} with value {value}.") - rr = src.client.write_register(addr, value, slave=unitid) + log.info(f"Writing register at address {addr} with value {value}.") + rr = src.client.write_registers(addr, payload, slave=unitid) if not rr: raise ModbusException("Received empty modbus respone.") if rr.isError(): diff --git a/requirements.txt b/requirements.txt index fa3e555..d582e3e 100644 --- a/requirements.txt +++ b/requirements.txt @@ -1,56 +1,56 @@ -paho-mqtt==1.6.1 \ +paho-mqtt==1.6.1 ; python_version >= "3.11" and python_version < "4.0" \ --hash=sha256:2a8291c81623aec00372b5a85558a372c747cbca8e9934dfe218638b8eefc26f -pymodbus==3.5.2; python_full_version >= "3.8.0" \ - 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