SC card and ethernet issues on Lilygo T-ETH Lite (ESP32-S3)

[MrTinkerman]

Hi all,

EDIT:
Solved, see first comment
/EDIT

I finally managed to get both ethernet and the SD card working on my Lilygo T-ETH Lite.
I'm still using Thonny and that could very well be the culprit, not sure about that though.

The code below runs fine once. But after a soft reboot (stop restart backend in Thonny) I get all kinds of errors on the SD and ethernet.
Various encountered errors: 'RuntimeError: Wifi Unknown Error 0x5004', 'OSError: (-259, 'ESP_ERR_INVALID_STATE')', 'OSError: [Errno 2] ENOENT', 'OSError: [Errno 19] ENODEV'. These are both ethernet and SD errors from several testscripts.

If I unplug/replug the board, the code runs fine again, but just once.

Does anyone know why this happens and how i can prevent it?

Thanks

Oh and : MicroPython v1.25.0 on 2025-04-15; Generic ESP32S3 module with ESP32S3

EDIT:
After testing machine.reset() the board connects to ethernet and writes to the SD card.
Still curious about how to prevent those errors after a soft reboot
/EDIT

import os, network, time, ntptime
from machine import Pin, SPI, SDCard
from time import sleep_ms as sms


# Ethernet ===============================================
eth_spi = SPI(1, sck=Pin(10), mosi=Pin(12), miso=Pin(11))
eth_cs  = Pin(9)

nic = network.LAN(phy_type=network.PHY_W5500,
                  spi=eth_spi, cs=eth_cs,
                  int=Pin(13), phy_addr=0)

nic.active(True)
nic.ifconfig('dhcp')
    
# Wait for connection
while not nic.isconnected():
    print(".", end="")
    sms(500)

print("\nConnected! IP:", nic.ifconfig())

# NTP ===================================================
ntptime.host = "pool.ntp.org"


# SD Card ===============================================
sd = SDCard(slot=2, miso=5, mosi=6,
            sck=7, cs=42)
os.mount(sd, "/sd")
print("SD Mounted")


for i in range(5):
    
    try:
        ntptime.settime()
        
        with open("/sd/ntp_log.txt", "a") as f:
            
            log = f'{time.localtime()}\n'
            f.write(log)
            print(f'Time logged: {log}')
    except Exception as e:
        print(f'Logging failed: {e}')
        
    sms(5000)

# Unmount SD
os.umount("/sd")
print("SD unmounted")

[MrTinkerman]

Ok, the solution is actually not that complicated:

nic = network.LAN(phy_type=network.PHY_W5500,
                  spi=eth_spi, cs=eth_cs,
                  int=Pin(13), phy_addr=0)

if nic.active():
    nic.active(False)
    sms(200)

nic.active(True)
nic.ifconfig('dhcp')

[scruss]

Glad you found a solution. You can mark your own answers as "answered" to make this solution more easily found