boards/st/b_g474e_dpow1/doc/index.rst
.. zephyr:board:: b_g474e_dpow1
Overview
The B-G474E-DPOW1 Discovery kit is a digital power solution and a complete demonstration and development platform for the STMicroelectronics STM32G474RET6 microcontroller. Leveraging the new HRTimer-oriented features, 96 Kbytes of embedded RAM, math accelerator functions and USB-PD 3.0 offered by STM32G474RET6, the B-G474E-DPOW1 Discovery kit, based on the USB 2.0 FS USB Type-C® connector interface, helps the user to prototype applications with digital power such as a buck-boost converter, RGB power LED lighting or a class-D audio amplifier. The B-G474E-DPOW1 Discovery kit does not require any separate probe, as it integrates the STLINK-V3E debugger and programmer.
STM32G474RET6 Arm® Cortex®-M4 core-based microcontroller, featuring 512 Kbytes of Flash memory and 128 Kbytes of SRAM, in LQFP64 package
USB Type-C® with USB 2.0 FS interface compatible with USB-PD 3.0
RGB power LED for a bright lighting
Digital power buck-boost converter with internal or external Input voltage and with onboard resistor loads
Audio Class-D amplifier capable
4 user LEDs
3 LEDs for power and ST-LINK communication
4-direction joystick with a selection button
Reset push-button
Board connectors
Flexible power-supply options: ST-LINK USB VBUS or USB Type-C® VBUS or external source
On-board STLINK-V3E debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port
More information about the board can be found at the B-G474E-DPOW1 website_.
More information about STM32G474RE can be found here:
G474RE on www.st.com_STM32G4 reference manual_.. zephyr:board-supported-hw::
Each of the GPIO pins can be configured by software as output (push-pull or open-drain), as input (with or without pull-up or pull-down), or as peripheral alternate function. Most of the GPIO pins are shared with digital or analog alternate functions. All GPIOs are high current capable except for analog inputs.
For more details please refer to B-G474E-DPOW1 Discovery board User Manual_.
Programming and Debugging
.. zephyr:board-supported-runners::
The B-G474E-DPOW1 Discovery board includes an ST-LINK/V3E embedded debug tool interface.
Applications for the b_g474e_dpow1 board configuration can be built and
flashed in the usual way (see :ref:build_an_application and
:ref:application_run for more details).
The board is configured to be flashed using west STM32CubeProgrammer_ runner,
so its :ref:installation <stm32cubeprog-flash-host-tools> is required.
.. code-block:: console
$ west flash
Here is an example for the :zephyr:code-sample:blinky application.
.. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: b_g474e_dpow1 :goals: build flash
You will see the LED blinking every second.
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: b_g474e_dpow1 :maybe-skip-config: :goals: debug
References
.. target-notes::
.. _B-G474E-DPOW1 website: https://www.st.com/en/evaluation-tools/b-g474e-dpow1.html
.. _STM32G4 reference manual: https://www.st.com/resource/en/reference_manual/rm0440-stm32g4-series-advanced-armbased-32bit-mcus-stmicroelectronics.pdf
.. _B-G474E-DPOW1 Discovery board User Manual: https://www.st.com/resource/en/user_manual/um2577-discovery-kit-with-stm32g474re-mcu-stmicroelectronics.pdf
.. _G474RE on www.st.com: https://www.st.com/en/microcontrollers-microprocessors/stm32g474re.html
.. _STM32CubeProgrammer: https://www.st.com/en/development-tools/stm32cubeprog.html