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Diffstat (limited to 'docs/reference/speed_python.rst')
| -rw-r--r-- | docs/reference/speed_python.rst | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/docs/reference/speed_python.rst b/docs/reference/speed_python.rst index 279a1bbcd..4db60ec14 100644 --- a/docs/reference/speed_python.rst +++ b/docs/reference/speed_python.rst @@ -63,8 +63,8 @@ used for communication with a device. A typical driver will create the buffer in constructor and use it in its I/O methods which will be called repeatedly. The MicroPython libraries typically provide support for pre-allocated buffers. For -example, objects which support stream interface (e.g., file or UART) provide `read()` -method which allocates new buffer for read data, but also a `readinto()` method +example, objects which support stream interface (e.g., file or UART) provide ``read()`` +method which allocates new buffer for read data, but also a ``readinto()`` method to read data into an existing buffer. Floating Point @@ -109,10 +109,10 @@ the 10K buffer go (be ready for garbage collection), instead of making a long-living memoryview and keeping 10K blocked for GC. Nonetheless, `memoryview` is indispensable for advanced preallocated buffer -management. `readinto()` method discussed above puts data at the beginning +management. ``readinto()`` method discussed above puts data at the beginning of buffer and fills in entire buffer. What if you need to put data in the middle of existing buffer? Just create a memoryview into the needed section -of buffer and pass it to `readinto()`. +of buffer and pass it to ``readinto()``. Identifying the slowest section of code --------------------------------------- @@ -326,7 +326,7 @@ standard approach would be to write mypin.value(mypin.value() ^ 1) # mypin was instantiated as an output pin -This involves the overhead of two calls to the `Pin` instance's :meth:`~machine.Pin.value()` +This involves the overhead of two calls to the :class:`~machine.Pin` instance's :meth:`~machine.Pin.value()` method. This overhead can be eliminated by performing a read/write to the relevant bit of the chip's GPIO port output data register (odr). To facilitate this the ``stm`` module provides a set of constants providing the addresses of the relevant registers. |