.. zephyr:board:: yd_stm32h750vb Overview ******** The YD-STM32H750VB development board is a complete demonstration and development platform for Arm |reg| Cortex |reg|-M7 core-based STM32H750VBT6 microcontroller, with 128Kbytes of Flash memory and 1 Mbytes of SRAM. More information about STM32H750 can be found here: - `STM32H750 on www.st.com`_ - `STM32H750xx reference manual`_ - `STM32H750xx datasheet`_ Supported Features ================== The current Zephyr YD-STM32H750VB board supports the following features: +-----------+------------+-------------------------------------+ | Interface | Controller | Driver/Component | +===========+============+=====================================+ | CLOCK | on-chip | reset and clock control | +-----------+------------+-------------------------------------+ | NVIC | on-chip | nested vector interrupt controller | +-----------+------------+-------------------------------------+ | UART | on-chip | serial port-polling; | | | | serial port-interrupt | +-----------+------------+-------------------------------------+ | PINMUX | on-chip | pinmux | +-----------+------------+-------------------------------------+ | GPIO | on-chip | gpio | +-----------+------------+-------------------------------------+ Other hardware features are not yet supported on Zephyr porting. The default configuration can be found in the defconfig file: :zephyr_file:`boards/vcc-gnd/yd_stm32h750vb/yd_stm32h750vb_defconfig` Pin Mapping =========== Default Zephyr Peripheral Mapping: ---------------------------------- - UART_1_TX : PA9 - UART_1_RX : PA10 - LED_1 : PA13 (SWDIO) - LED_2 : PA14 (SWCLK) - LED_3 : PA15 - LED_4 : PB4 - KEY : PB3 System Clock ============ The STM32H750VB System Clock can be driven by an internal or external oscillator, as well as by the main PLL clock. By default, the System clock is driven by the PLL clock at 480MHz. PLL clock is feed by a 25MHz high speed external clock. Flashing ======== There are 2 main entry points for flashing STM32H750VB SoCs, one using the ROM bootloader, and another by using the SWD debug port (which requires additional hardware such as ST-Link). Flashing using the ROM bootloader requires a special activation pattern, which can be triggered by using the BOOT0 button. Installing dfu-util ------------------- It is recommended to use at least v0.8 of `dfu-util`_. The package available in debian/ubuntu can be quite old, so you might have to build dfu-util from source. There is also a Windows version which works, but you may have to install the right USB drivers with a tool like `Zadig`_. Flashing an application to YD-STM32H750VB ----------------------------------------- Connect a USB-C cable and the board should power ON. Force the board into DFU mode by keeping the BOOT0 switch pressed while pressing and releasing the RST switch. The dfu-util runner is supported on this board and so a sample can be built and tested easily. Here is an example for the :zephyr:code-sample:`blinky` application. .. zephyr-app-commands:: :zephyr-app: samples/basic/blinky :board: yd_stm32h750vb :goals: build flash You will see the LED blinking every second. 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: yd_stm32h750vb :goals: debug References ********** .. target-notes:: .. _Zadig: https://zadig.akeo.ie/ .. _dfu-util: http://dfu-util.sourceforge.net/build.html .. _STM32H750 on www.st.com: https://www.st.com/en/microcontrollers-microprocessors/stm32h750-value-line.html .. _STM32H750xx reference manual: https://www.st.com/resource/en/reference_manual/rm0433-stm32h742-stm32h743753-and-stm32h750-value-line-advanced-armbased-32bit-mcus-stmicroelectronics.pdf .. _STM32H750xx datasheet: https://www.st.com/resource/en/datasheet/stm32h750vb.pdf