Checks

• I agree to follow the MicroPython Code of Conduct to ensure a safe and respectful space for everyone.

• I've searched for existing issues matching this bug, and didn't find any.

Port, board and/or hardware

esp32 port, ESP32_GENERIC_C3

MicroPython version

MicroPython v1.22.2 on 2024-02-22; ESP32C3 module with ESP32C3

Reproduction

import network
import time
import machine
uart = machine.UART(1, baudrate=115200, tx=18, rx=19)
ppp = network.PPP(uart)
ppp.active(True)
ppp.connect()
ppp.active(False)
ppp.active(True)

Expected behaviour

I would expect MicroPython to activate PPP or return an exception.

Observed behaviour

After re-activating the PPP, MicroPython freezes, even to the point of not detecting a KeyboardInterrupt.

Additional Information

The problem is independent of whether or not there is a PPP module connected to that Uart, and it is also independent of the activation of the PPP module with the AT commands.

I understand that the problem occurs whenever PPP is deactivated and reactivated.