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zephyr/README: Update to require Zephyr 1.8.

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There're a lot of changes and fixes in 1.8 regarding IP stack,
incompatible with previous Zephyr versions, so supporting them
doesn't make sense.

This is  the last commit which should build with Zephyr 1.7.
This commit is contained in:
Paul Sokolovsky 2017-05-12 22:05:07 +03:00
parent d57c6564dc
commit 5383a50072
1 changed files with 9 additions and 10 deletions
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19
zephyr/README.md
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@ -1,20 +1,19 @@
MicroPython port to Zephyr RTOS
===============================
This is an initial port of MicroPython to Zephyr RTOS
This is an work-in-progress port of MicroPython to Zephyr RTOS
(http://zephyrproject.org).
The port integrates well with Zephyr build system, using the latest
features which will be available in 1.6.0, and thus requires Zephyr
master to build against. All boards supported by Zephyr (with standard
level of feature support, like UART console) should work with
MicroPython (but not all were tested).
This port requires Zephyr version 1.8 or higher. All boards supported
by Zephyr (with standard level of features support, like UART console)
should work with MicroPython (but not all were tested).
Features supported at this time:
* REPL (interactive prompt) over Zephyr UART console.
* `utime` module for time measurements and delays.
* `machine.Pin` class for GPIO control.
* `usocket` module for networking (IPv4/IPv6).
* "Frozen modules" support to allow to bundle Python modules together
with firmware. Including complete applications, including with
run-on-boot capability.
@ -97,10 +96,10 @@ MicroPython is committed to maintain minimal binary size for Zephyr port
below 128KB, as long as Zephyr project is committed to maintain stable
minimal size of their kernel (which they appear to be). Note that at such
size, there is no support for any Zephyr features beyond REPL over UART,
and only very minimal set of builtin Python modules. Thus, this build
is more suitable for code size control and quick demonstrations on
smaller systems. It's also suitable for careful enabling of features one
by one to achieve needed functionality and code size. This is in a
and only very minimal set of builtin Python modules is available. Thus,
this build is more suitable for code size control and quick demonstrations
on smaller systems. It's also suitable for careful enabling of features
one by one to achieve needed functionality and code size. This is in the
contrast to the "default" build, which may get more and more features
enabled over time.