#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
Custom exceptions for the m2m library.
"""

class M2MError(Exception):
    """Base class for all m2m library exceptions."""
    pass

class SerialError(M2MError):
    """Raised when a serial communication error occurs."""
    pass

class ATCommandError(M2MError):
    """Raised when an AT command returns an error or times out."""
    pass

class TimeoutError(M2MError):
    """Raised when an operation times out."""
    pass

class NetworkError(M2MError):
    """Raised when a network operation fails (e.g. attach, context activation)."""
    pass