W5500 MQTT Issues ([Errno 13] EACCES)

Question

Hi, I found this tutorial online to connect my W5500 via ethernet to MQTT with mqttsimple: https://github.com/Wiznet/RP2040-HAT-MicroPython/tree/main/examples/MQTT/Publish. I am having issues when the pico tries to connect to the broker and it it prompting me with the error [Errno 13] EACCES when running it on Thonny. The pico does seem to be setting itself a public IP (I can ping it from another device in the network). It seems to be a socket issue with the W5500 board, but I am having difficulties solving the issue. Any pointers would be greatly appreciated. Here’s the code I am using: from umqttsimple import MQTTClient from usocket import socket from machine import Pin,SPI import network import time #mqtt config mqtt_server = ‘192.168.1.3’ client_id = ‘monitor’ topic_pub = b’monitor/pipicotest’ topic_msg = b’Hello Pico’ last_message = 0 message_interval = 5 counter = 0 #W5x00 chip init def w5x00_init(): spi=SPI(0,2_000_000, mosi=Pin(19),miso=Pin(16),sck=Pin(18)) nic = network.WIZNET5K(spi,Pin(17),Pin(20)) #spi,cs,reset pin nic.active(True) #None DHCP nic.ifconfig((‘192.168.1.10’,‘255.255.255.0’,‘192.168.1.1’,‘8.8.8.8’)) #DHCP #nic.ifconfig(‘dhcp’) print(‘IP address :’, nic.ifconfig()) while not nic.isconnected(): time.sleep(1) #print(nic.regs()) print(“Not connected”) print(“Connected”) def mqtt_connect(): client = MQTTClient(client_id, mqtt_server, keepalive=60) client.connect() print(‘Connected to %s MQTT Broker’%(mqtt_server)) return client #reconnect & reset def reconnect(): print(‘Failed to connected to MQTT Broker. Reconnecting…’) time.sleep(5) machine.reset() def main(): w5x00_init() try: client = mqtt_connect() except OSError as e: reconnect() while True: client.publish(topic_pub, topic_msg) time.sleep(3) print(“published”) client.disconnect() if name == “main”: main()

Eugeny · Answer

EACCESS is “permission denied”. Either to the file or to any other resource.