22 lines
485 B
Python

from pymodbus.client.sync import ModbusSerialClient
import RS485Ext
import time
ser=RS485Ext.RS485Ext(port='/dev/ttyAMA0', baudrate=1200, stopbits=2)
client = ModbusSerialClient(method='rtu')
client.socket = ser
client.connect()
while True:
try:
result = client.read_holding_registers(address=0x2000, count=2, unit=1)
print(result)
print(result.registers)
except Exception as e:
print("ERROR: %s" % str(e))
time.sleep(2)
client.close()