circuitpython/docs/library/micropython.rst

:mod:`micropython` -- access and control MicroPython internals
==============================================================

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

Functions
---------

.. 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.

.. 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.