Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
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.. zephyr:board:: mikroe_quail
Overview
********
MikroE Quail for STM32 is a development board containing an `STM32F427`_
microcontroller. It is equipped with four mikroBUS sockets.
The edges of the board are lined with screw terminals and USB ports for
additional connectivity.
Hardware
********
The Quail board contains the following connections:
- Four mikroBUS connectors
- 32 screw terminals
- two USB ports, one for programming and one for external storage
Furthermore the board contains three LEDs that are connected
to the microcontroller.
Supported Features
==================
.. zephyr:board-supported-hw::
Connections and IOs
===================
The four mikroBUS interfaces are aliased in the device tree so that their
peripherals can be accessed using ``mikrobus_N_INTERFACE`` so e.g. the SPI on
bus 2 can be found by the alias ``mikrobus_2_spi``. The numbering corresponds
with the marking on the board.
For connections on the edge connectors, please refer to `Quail for STM32 User Manual`_.
Programming and Debugging
*************************
.. zephyr:board-supported-runners::
Applications for the ``mikroe_quail`` board can be built and flashed in the usual way
(see :ref:`build_an_application` and :ref:`application_run` for more details).
Flashing
========
The board ships with a locked flash, and will fail with the message:
.. code-block:: console
Error: stm32x device protected
Unlocking with OpenOCD makes it possible to flash.
.. code-block:: console
$ openocd -f /usr/share/openocd/scripts/interface/stlink-v2.cfg \
-f /usr/share/openocd/scripts/target/stm32f4x.cfg -c init\
-c "reset halt" -c "stm32f4x unlock 0" -c "reset run" -c shutdown
Here is an example for the :zephyr:code-sample:`hello_world` application.
.. zephyr-app-commands::
:zephyr-app: samples/hello_world
:board: mikroe_quail
:goals: build flash
You should see the following message on the console:
.. code-block:: console
Hello World! mikroe_quail
Debugging
=========
You can debug an application in the usual way. Here is an example for the
:zephyr:code-sample:`hello_world` application.
.. zephyr-app-commands::
:zephyr-app: samples/hello_world
:board: mikroe_quail
:maybe-skip-config:
:goals: debug
References
**********
.. target-notes::
.. _Quail website:
https://www.mikroe.com/quail
.. _Quail for STM32 User Manual:
https://download.mikroe.com/documents/starter-boards/other/quail/quail-board-manual-v100.pdf
.. _STM32F427VIT6 Website:
https://www.st.com/en/microcontrollers-microprocessors/stm32f427vi.html
.. _STM32F427:
https://www.st.com/resource/en/datasheet/stm32f427vg.pdf