151 lines
5.4 KiB
ReStructuredText
151 lines
5.4 KiB
ReStructuredText
.. _stm32l4r9i_disco_board:
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ST STM32L4R9I Discovery
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#######################
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Overview
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********
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The 32L4R9IDISCOVERY Discovery kit is a complete demonstration and development platform
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for STMicroelectronics Arm® Cortex®-M4 core-based STM32L4R9AI microcontroller.
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Leveraging the innovative ultra-low-power oriented features, 640 Kbytes of embedded RAM,
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graphics performance (Chrom-ART Accelerator), and DSI controller offered by the STM32L4R9AI,
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the 32L4R9IDISCOVERY Discovery kit enables users to easily prototype applications with
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state-of-the-art energy efficiency, as well as stunning audio and graphics rendering with direct
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support for AMOLED DSI round LCD display.
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For even more user-friendliness, the on-board ST-LINK/V2-1 debugger provides out-of-the-box
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programming and debugging capabilities.
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.. image:: img/stm32l4r9i_disco.jpg
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:align: center
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:alt: STM32L4R9I-DISCO
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More information about the board can be found at the `STM32L4R9I-DISCOVERY website`_.
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More information about STM32L4R9 can be found here:
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- `STM32L4R9/S9 on www.st.com`_
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- `STM32L4+ Series reference manual`_
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- `STM32L4R5xx/R7xx/R9xx datasheet`_
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Supported Features
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==================
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The current Zephyr stm32l4r9i_disco board configuration supports the following hardware features:
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+-----------+------------+-------------------------------------+
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| Interface | Controller | Driver/Component |
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+===========+============+=====================================+
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| NVIC | on-chip | nested vector interrupt controller |
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+-----------+------------+-------------------------------------+
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| UART | on-chip | serial port-polling |
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+-----------+------------+-------------------------------------+
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| PINMUX | on-chip | pinmux |
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+-----------+------------+-------------------------------------+
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| GPIO | on-chip | gpio |
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+-----------+------------+-------------------------------------+
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| FLASH | on-chip | on-chip flash memory; |
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| | | external OctoSPI memory |
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+-----------+------------+-------------------------------------+
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| ADC | on-chip | ADC Controller |
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+-----------+------------+-------------------------------------+
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| RTC | on-chip | Real Time Clock |
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+-----------+------------+-------------------------------------+
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| I2C | on-chip | i2c |
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+-----------+------------+-------------------------------------+
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| SPI | on-chip | spi |
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+-----------+------------+-------------------------------------+
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| PWM | on-chip | pwm |
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+-----------+------------+-------------------------------------+
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| SDMMC | on-chip | sd/mmc |
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+-----------+------------+-------------------------------------+
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Other hardware features are not yet supported on Zephyr porting.
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The default configuration can be found in the defconfig file:
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:zephyr_file:`boards/st/stm32l4r9i_disco/stm32l4r9i_disco_defconfig`
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Pin Mapping
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===========
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For more details, please refer to `STM32L4R9I-DISCOVERY website`_.
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System Clock
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============
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The STM32L4R9AI System Clock can be driven by an internal or external oscillator,
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as well as by the main PLL clock. By default, the System clock is driven by
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the PLL clock at 120MHz. PLL clock is driven by a 4MHz medium speed internal clock.
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Serial Port
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===========
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The STM32L4R9I Discovery board has up to 6 U(S)ARTs.
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The Zephyr console output is assigned to UART2, which is connected to the onboard
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ST-LINK Virtual COM port interface. Default communication settings are 115200 8N1.
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Programming and Debugging
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*************************
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Flashing
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========
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The STM32L4R9I Discovery board includes an ST-LINK/V2-1 debug tool.
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Applications for the ``stm32l4r9i_disco`` board configuration can be
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built and flashed in the usual way (see :ref:`build_an_application`
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and :ref:`application_run` for more details).
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Flashing an application to STM32L4R9I Discovery
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-----------------------------------------------
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Connect the STM32L4R9I Discovery to your host computer using the ST-LINK
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USB port, then run a serial host program to connect with the board. For example:
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.. code-block:: console
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$ minicom -b 115200 -D /dev/ttyACM0
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You can then build and flash applications in the usual way.
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Here is an example for the :ref:`hello_world` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: stm32l4r9i_disco
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:goals: build flash
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You should see the following message in the serial host program:
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.. code-block:: console
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$ Hello World! stm32l4r9i_disco
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Debugging
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=========
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You can debug an application in the usual way. Here is an example for the
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:ref:`hello_world` application.
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.. zephyr-app-commands::
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:zephyr-app: samples/hello_world
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:board: stm32l4r9i_disco
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:goals: debug
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.. _STM32L4R9I-DISCOVERY website:
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https://www.st.com/en/evaluation-tools/32l4r9idiscovery.html
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.. _STM32L4R9/S9 on www.st.com:
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https://www.st.com/en/microcontrollers-microprocessors/stm32l4r9-s9.html
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.. _STM32L4+ Series reference manual:
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https://www.st.com/resource/en/reference_manual/rm0432-stm32l4-series-advanced-armbased-32bit-mcus-stmicroelectronics.pdf
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.. _STM32L4R5xx/R7xx/R9xx datasheet:
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https://www.st.com/resource/en/datasheet/stm32l4r5vi.pdf
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