Posts made by Ghofran Daoues

the omega2+ can't detect the i2c slave i'm working with, whenever i try the write or the read command it returns : Error : read(or write) failed
the slave is MCP23018, when i type : i2cdetect -y 0 it deosn't return back the adress of the device eventhough it worked once or twice and it gave me the right address.
can anyone help me ? what should i do ?

@crispyoz Hello, please how to do this, i'm facing the same problem

you just type : pip install opcua

Hello everyone,

i am looking for people who worked with pymodbus on omega2+, i need some help

At this moment, i think my problem is hardware-related, actually i broke my expansion dock and i did some tricks to use it again, i thaught it worked but since then he's not seeing the ethernet dock, and when i power the expansion dock the led is green (usually it's red)

even after setting an ip to the ethernet and disabling the firewall, it doesn't ping .

the output of ifconfig and ping 192.168.0.3 :

omega2+ is directly connected using ethernet cable and the device doesn't run a dhcp, how to set a static ip on the omega ?

yes that's true it doesn't ping anymore
here are my outputs :
service firewall stop

ping 192.168.0.3
nc 192.168.0.3 502
route

ifconfig

The output of route command !

apparently this is my problem !

the other time i tried to run the nmap command but coudn't it find it (nmap) and i couldn't install
command not found/ unknown package

i was trying to ping from the omega to my pc, and to an another device (a servo-drive), actually now it pings, but still it can't connect to the servo drive through ethernet.
ps : i'm using the pymodbus library in order to connect to this device it worked with my pc but not with the omega here's the code
from pymodbus.client.sync import ModbusTcpClient
import time

client = ModbusTcpClient('192.168.0.3',502)
conected = client.connect()
print(conected)
time.sleep(1)
#OVERRIDE
client.write_register(4,16384)
client.write_register(9,16384)
client.write_register(10,16384)
#enable power stage
client.write_register(0,1030)
#time.sleep(0.01)
client.write_register(0,1031)
#time.sleep(0.01)
client.write_register(0,1039)
#time.sleep(0.01)
print("Power stage enabled")
#disable power stage
time.sleep(2)
client.write_register(0,0)
time.sleep(1)
client.close()

@crispyoz thank you !! it worked after running :'service firewall stop'

Hello everyone,
i'm not able to ping the device connected to my omega2+ through ethernet, my device's IP is (192.168.0.3) and i changed the omega's IP to (192.168.0.7). can anyone help me ?

@crispyoz thank you sir i found the library and now i'm getting the same error as @Nagarjuna-Reddy : "i am getting pymodbus 502 connection refused"

Hello, i am looking for a pymodbus that matches the distribution of my omega2+, can you please give me the reference of the library that you are using, it is exactly what i am looking for