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i2c_emul: Add support for CONFIG_I2C_TARGET_BUFFER_MODE

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Add emulation and test to support the buffered target mode.

Signed-off-by: Yuval Peress <peress@google.com>
This commit is contained in:
Yuval Peress 2024-07-16 10:43:18 -06:00 • committed by Anas Nashif
commit 690134356c
11 changed files with 334 additions and 38 deletions
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4
doc/hardware/emulator/bus_emulators.rst
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@ -150,7 +150,7 @@ I2C Emulation features
In the binding of the I2C emulated bus, there's a custom property for address
based forwarding. Given the following devicetree node:
.. code-block::
.. code-block:: devicetree
i2c0: i2c@100 {
status = "okay";
@ -170,7 +170,7 @@ same image.
.. note::
The ``#forward-cells`` attribute should always be 1. Each entry in the
``fowards`` attribute consists of the phandle followed by the address. In
``forwards`` attribute consists of the phandle followed by the address. In
the example above, ``<&i2c1 0x20>`` will forward all read/write operations
made to ``i2c0`` at port ``0x20`` to ``i2c1`` on the same port. Since no
additional cells are used by the emulated controller, the number of cells