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Both aren't part of generic Hardware API: It's impossible to implement
.id() method in a generic case (e.g., when Pin is instantiated by the
underlying OS/RTOS). .board attribute is an obvious space hog which
instead can be implemented on Python level if needed.

It's not part of MicroPython HW API and can be easily implemented on Python
level in case of need.

Saved 56 bytes of binary.

Returns 0 or 1, corresponding to no or at least 1 char waiting.

The docs are updated and describe the new behaviour of these methods.

Following finalized naming in uasyncio.

If no network driver is enabled (e.g., it doesn't exist for a particular
board), it will be NULL.

Instead, just peek a packet at the head of the queue and work with it.

Here we wait for non-empty FIFO, and then directly access/drop its head
element.

Regression was introduced by ec534609

pyb.UART has a superset of machine.UART functionality so can be used to
provide compatibility with other ports that also implement machine.UART.

Existing code failed if seek() went past EOF (which is acceptable when writing).

To make them harder to miss.

May be a port-specific method, not portable, not part of the official
specification.

Working on a build with PY_IO enabled (for PY_UJSON support) but PY_SYS_STDFILES disabled (no filesystem).  There are multiple references to mp_sys_stdout_obj that should only be enabled if both PY_IO and PY_SYS_STDFILES are enabled.

This solves a case when socker_read() has blocked on fifo, and then peer
closed event arrives.

Requires patch in review.

The most important info it returns are numbers of free buffers
in different pools (rx/tx packet headers, data fragments).

Fixes Zephyr tests.

This happened when the overflow counter for ticks_ms() was interrupted
by an external hard interrupt (issue #3076).