| .. _stm32g081b_eval_board: |
| |
| ST STM32G081B Evaluation |
| ######################## |
| |
| Overview |
| ******** |
| The STM32G081B-EVAL Evaluation board is a high-end development platform, for |
| Arm Cortex-M0+ core-based STM32G081RBT6 microcontroller, with USB Type-C and |
| power delivery controller interfaces (UCPD), compliant with USB type-C r1.2 |
| and USB PD specification r3.0, two I2Cs, two SPIs, five USARTs, one LP UART, |
| one 12-bit ADC, two 12-bit DACs, two GP comparators, two LP timers, internal |
| 32 KB SRAM and 128 KB Flash, CEC, SWD debugging support. The full range of |
| hardware features on the STM32G081B-EVAL Evaluation board includes a mother |
| board, a legacy peripheral daughterboard and a USB-C and Power Delivery |
| daughterboard, which help to evaluate all peripherals (USB Type-C connector |
| with USB PD, motor control connector, RS232, RS485, Audio DAC, microphone ADC, |
| TFT LCD, IrDA, IR LED, IR receiver, LDR, MicroSD card, CEC on two HDMI |
| connectors, smart card slot, RF E2PROM & Temperature sensor…), and to develop |
| applications. |
| |
| The board integrates an ST-LINK/V2-1 as an embedded in-circuit debugger and |
| programmer for the STM32 MCU. The daughterboard and extension connectors |
| provide an easy way to connect a daughterboard or wrapping board for the |
| user's specific applications. |
| |
| The USB-C and Power Delivery daughterboard |
| features two independent USB-C ports controlled by an STM32G0. USB-C port 1 |
| is dual role power (DRP) and can provide up-to 45 W. USB-C Port 2 is sink |
| only. Both support USB PD protocol and alternate mode functionality. |
| |
| Application firmware examples are provided to evaluate the USB-C technology |
| through various use cases. |
| |
| |
| |
| - Mother board |
| - STM32G081RBT6 microcontroller with 128 Kbytes of Flash memory and |
| 32 Kbytes of RAM in LQFP64 package |
| - MCU voltage choice fixed 3.3 V or adjustable from 1.65 V to 3.6 V |
| - I2C compatible serial interface |
| - RTC with backup battery |
| - 8-Gbyte or more SPI interface microSD card |
| - Potentiometer |
| - 4 color user LEDs and one LED as MCU low-power alarm |
| - Reset, Tamper and User buttons |
| - 4-direction control and selection joystick |
| - Board connectors: |
| - 5 V power jack |
| - RS-232 and RS485 communications |
| - Stereo audio jack including analog microphone input |
| - microSD card |
| - Extension I2C connector |
| - Motor-control connector |
| - Board extension connectors: |
| - Daughterboard connectors for legacy peripheral daughter board or |
| USB-C daughterboard |
| - Extension connectors for daughterboard or wire-wrap board |
| - Flexible power-supply options: |
| - 5 V power jack |
| - ST-LINK/V2-1 USB connector |
| - Daughterboard |
| - On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration |
| capability: mass storage, virtual COM port and debug port |
| - Legacy peripheral daughterboard |
| - IrDA transceiver |
| - IR LED and IR receiver |
| - Light dependent resistor (LDR) |
| - Temperature Sensor |
| - Board connectors: |
| - Two HDMI connectors with DDC and CEC |
| - Smart card slot |
| - USB-C and Power Delivery daughterboard |
| - Mux for USB3.1 Gen1 / DisplayPort input and Type-C port1 output |
| - Mux for Type-C port2 input and DisplayPort output / USB2.0 |
| - VCONN on Type-C port1 |
| - USB PD on Type-C port1 |
| - Board connectors: |
| - Type-C port1 DRP (dual-role port) |
| - Type-C port2 Sink |
| - DisplayPort input |
| - DisplayPort output |
| - USB 3.1 Gen1 Type-B receptacle |
| - USB2.0 Type-A receptacle |
| - 19 V power jack for USB PD |
| |
| .. image:: img/stm32g081b_eval.jpg |
| :align: center |
| :alt: STM32G081B-EVAL |
| |
| More information about the board can be found at the `STM32G081B-EVAL website`_. |
| |
| |
| More information about STM32G081RB can be found here: |
| - `G081RB on www.st.com`_ |
| - `STM32G081 reference manual`_ |
| |
| |
| Supported Features |
| ================== |
| |
| The Zephyr stm32g081b_eval board configuration supports the following hardware features: |
| |
| +-----------+------------+-------------------------------------+ |
| | Interface | Controller | Driver/Component | |
| +===========+============+=====================================+ |
| | NVIC | on-chip | nested vector interrupt controller | |
| +-----------+------------+-------------------------------------+ |
| | UART | on-chip | serial port-polling; | |
| | | | serial port-interrupt | |
| +-----------+------------+-------------------------------------+ |
| | UCPD | on-chip + ucpd | |
| +-----------+------------+-------------------------------------+ |
| | ADC | on-chip | adc | |
| +-----------+------------+-------------------------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+-------------------------------------+ |
| | WATCHDOG | on-chip | independent watchdog | |
| +-----------+------------+-------------------------------------+ |
| |
| Other hardware features are not yet supported in this Zephyr port. |
| |
| The default configuration can be found in the defconfig file: |
| ``boards/arm/stm32g081b_eval/stm32g081b_eval_defconfig`` |
| |
| Connections and IOs |
| =================== |
| |
| 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. |
| |
| Default Zephyr Peripheral Mapping: |
| ---------------------------------- |
| |
| - UART_3 TX/RX : PC10/PC11 (ST-Link Virtual Port Com) |
| - UCPD2 : PD0/PD2 |
| - BUTTON (JOY_SEL) : PA0 |
| - BUTTON (JOY_LEFT) : PC8 |
| - BUTTON (JOY_DOWN) : PC3 |
| - BUTTON (JOY_RIGHT) : PC7 |
| - BUTTON (JOY_UP) : PC2 |
| - VBUS DISCHARGE : PB14 |
| - LED1 : PD5 |
| - LED2 : PD6 |
| - LED3 : PD8 |
| - LED4 : PD9 |
| |
| For more details please refer to `STM32G0 Evaluation board User Manual`_. |
| |
| Programming and Debugging |
| ************************* |
| |
| Applications for the ``stm32g081b_eval`` board configuration can be built and |
| flashed in the usual way (see :ref:`build_an_application` and |
| :ref:`application_run` for more details). |
| |
| Flashing |
| ======== |
| |
| The STM32G081B Evaluation board includes an ST-LINK/V2-1 embedded debug tool interface. |
| |
| .. code-block:: console |
| |
| $ west flash |
| |
| Flashing an application to the STM32G081B_EVAL |
| ---------------------------------------------- |
| |
| Here is an example for the :zephyr:code-sample:`blinky` application. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/basic/blinky |
| :board: stm32g081b_eval |
| :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 |
| :ref:`hello_world` application. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/hello_world |
| :board: stm32g081b_eval |
| :maybe-skip-config: |
| :goals: debug |
| |
| References |
| ********** |
| |
| .. target-notes:: |
| |
| .. _STM32G081B-EVAL website: |
| https://www.st.com/en/evaluation-tools/stm32g081b-eval.html |
| |
| .. _STM32G081 reference manual: |
| https://www.st.com/resource/en/reference_manual/rm0444-stm32g0x1-advanced-armbased-32bit-mcus-stmicroelectronics.pdf |
| |
| .. _STM32G0 Evaluation board User Manual: |
| https://www.st.com/resource/en/user_manual/um2403-evaluation-board-with-stm32g081rb-mcu-stmicroelectronics.pdf |
| |
| .. _G081RB on www.st.com: |
| https://www.st.com/en/microcontrollers/stm32g081rb.html |