46 lines
1.1 KiB
Python
46 lines
1.1 KiB
Python
from fastapi import FastAPI
|
|
from pymodbus.client import ModbusSerialClient
|
|
import threading
|
|
import time
|
|
import logging
|
|
|
|
serial_port = "COM6"
|
|
baud_rate = 9600
|
|
modbus_client = ModbusSerialClient(serial_port, baudrate=baud_rate)
|
|
modbus_data = "0"
|
|
|
|
logging.basicConfig()
|
|
log = logging.getLogger()
|
|
log.setLevel(logging.DEBUG)
|
|
|
|
def poll_modbus():
|
|
global modbus_data
|
|
modbus_client.connect()
|
|
while True:
|
|
try:
|
|
response = modbus_client.read_discrete_inputs(10001, 1, slave=1)
|
|
#print(response)
|
|
|
|
if not response.isError():
|
|
modbus_data = response.registers[0]
|
|
print(modbus_data)
|
|
except:
|
|
pass
|
|
|
|
|
|
|
|
threading.Thread(target=poll_modbus, daemon=True).start()
|
|
|
|
app = FastAPI()
|
|
|
|
@app.get("/modbus_data")
|
|
async def get_modbus_data():
|
|
return {"modbus_data": modbus_data}
|
|
|
|
@app.get("/")
|
|
async def root():
|
|
return {"message": "Welcome to FastAPI with Modbus"}
|
|
|
|
if __name__ == "__main__":
|
|
import uvicorn
|
|
uvicorn.run(app, host="0.0.0.0", port=12345) |