jdz/modbus_door.py
2024-07-26 17:37:36 -06:00

107 lines
3.2 KiB
Python

import RPi.GPIO as GPIO
import paho.mqtt.client as mqtt
import os
import minimalmodbus
import time
# Limpiar configuración previa de GPIO
GPIO.setmode(GPIO.BCM)
GPIO.cleanup()
# MQTT Broker settings
mqttBroker = "65.108.199.212"
myhost = os.uname()[1]
client = mqtt.Client(myhost)
client.connect(mqttBroker, 1883)
preferred_device = '/dev/ttyUSB0'
fallback_device = '/dev/ttyUSB5'
device_path = preferred_device if os.path.exists(preferred_device) else fallback_device
modbus_device = '/dev/modbus'
# Modbus configuration
mb_address = 1 # Modbus address
sensy_boi = minimalmodbus.Instrument(modbus_device, mb_address)
sensy_boi.serial.baudrate = 9600
sensy_boi.serial.bytesize = 8
sensy_boi.serial.parity = minimalmodbus.serial.PARITY_NONE
sensy_boi.serial.stopbits = 1
sensy_boi.serial.timeout = 0.5
sensy_boi.mode = minimalmodbus.MODE_RTU
# Configure buffer clearing and port closing settings
sensy_boi.clear_buffers_before_each_transaction = True
sensy_boi.close_port_after_each_call = True
# GPIO configuration
PIN_17 = 17
LuzPuerta = 18
LuzEncendido = 23
GPIO.setup(PIN_17, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(LuzPuerta, GPIO.OUT)
GPIO.setup(LuzEncendido, GPIO.OUT)
# Mantener LuzEncendido en HIGH mientras el programa esté corriendo
GPIO.output(LuzEncendido, GPIO.HIGH)
# Lista para almacenar los datos pendientes
pending_data = []
def control_gpio():
status_17 = GPIO.input(PIN_17)
if status_17 == GPIO.LOW:
GPIO.output(LuzPuerta, GPIO.HIGH) # Luz Roja encendida
else:
GPIO.output(LuzPuerta, GPIO.LOW)
return status_17
try:
while True:
# Controlar GPIO sin retraso
status_17 = control_gpio()
# Leer datos del sensor Modbus
data = sensy_boi.read_registers(0, 2)
hum = data[0] / 10
temp = data[1] / 10
# Datos a publicar
payload = {
"temperature": temp,
"humidity": hum,
"door_status": str(status_17)
}
try:
# Intentar publicar los datos actuales
client.publish(f"iiot/{myhost}/temperature", temp)
client.publish(f"iiot/{myhost}/humidity", hum)
client.publish(f"iiot/{myhost}/door/pin17", str(status_17))
# Intentar publicar los datos pendientes
for item in pending_data:
client.publish(f"iiot/{myhost}/temperature", item["temperature"])
client.publish(f"iiot/{myhost}/humidity", item["humidity"])
client.publish(f"iiot/{myhost}/door/pin17", item["door_status"])
pending_data.clear() # Limpiar la lista si se publicaron todos los datos
except Exception as e:
print(f"Error al publicar datos: {str(e)}")
pending_data.append(payload) # Guardar los datos en memoria
# Imprimir los datos procesados
print("-------------------------------------")
print(f"Temperatura = {temp}\u00B0C")
print(f"Humedad relativa = {hum}%")
print(f"Estado de la puerta (PIN 17) = {status_17}")
print("-------------------------------------\n")
time.sleep(30)
except Exception as e:
print(f"Error: {str(e)}")
finally:
GPIO.cleanup()
print("Programa finalizado")