.. module:: micropython
   :synopsis: access and control MicroPython internals

.. only:: port_pyboard or port_unix

    .. function:: mem_info([verbose])

       Print information about currently used memory.  If the ``verbose`` argument
       is given then extra information is printed.

       The information that is printed is implementation dependent, but currently
       includes the amount of stack and heap used.  In verbose mode it prints out
       the entire heap indicating which blocks are used and which are free.

    .. function:: qstr_info([verbose])

       Print information about currently interned strings.  If the ``verbose``
       argument is given then extra information is printed.

       The information that is printed is implementation dependent, but currently
       includes the number of interned strings and the amount of RAM they use.  In
       verbose mode it prints out the names of all RAM-interned strings.

.. function:: alloc_emergency_exception_buf(size)

   Allocate ``size`` bytes of RAM for the emergency exception buffer (a good
   size is around 100 bytes).  The buffer is used to create exceptions in cases
   when normal RAM allocation would fail (eg within an interrupt handler) and
   therefore give useful traceback information in these situations.

   A good way to use this function is to put it at the start of your main script
   (eg boot.py or main.py) and then the emergency exception buffer will be active
   for all the code following it.