| .. _nucleo_g474re_board: |
| |
| ST Nucleo G474RE |
| ################ |
| |
| Overview |
| ******** |
| |
| The Nucleo G474RE board features an ARM Cortex-M4 based STM32G474RE MCU |
| with a wide range of connectivity support and configurations. Here are |
| some highlights of the Nucleo G474RE board: |
| |
| - STM32 microcontroller in LQFP64 package |
| - Arduino Uno V3 connectivity |
| - On-board ST-LINK/V3E debugger/programmer with SWD connector |
| - Flexible board power supply: |
| |
| - USB VBUS or external source(3.3V, 5V, 7 - 12V) |
| - Power management access point |
| |
| - Three LEDs: USB communication (LD1), power LED (LD3), user LED (LD2) |
| - Two push-buttons: RESET and USER |
| |
| .. image:: img/nucleo_g474re.jpg |
| :align: center |
| :alt: Nucleo G474RE |
| |
| More information about the board can be found at the `Nucleo G474RE website`_. |
| |
| Hardware |
| ******** |
| |
| The STM32G474RE SoC provides the following hardware IPs: |
| |
| - Ultra-low-power with FlexPowerControl (down to 28 nA Standby mode and 84 |
| |micro| A/MHz run mode) |
| - Core: ARM |reg| 32-bit Cortex |reg| -M4 CPU with FPU, frequency up to 170 MHz |
| - Clock Sources: |
| |
| - 4 to 48 MHz crystal oscillator (HSE) |
| - 32 kHz crystal oscillator for RTC (LSE) |
| - Internal 16 MHz factory-trimmed RC ( |plusminus| 1%) |
| - Internal low-power 32 kHz RC ( |plusminus| 5%) |
| - 2 PLLs for system clock, USB, audio, ADC |
| |
| - RTC with HW calendar, alarms and calibration |
| - 14x timers: |
| |
| - 1x 32-bit timer and 2x 16-bit timers with up to four IC/OC/PWM or pulse counter and quadrature (incremental) encoder input |
| - 2x 16-bit 8-channel advanced motor control timers, with up to 8x PWM channels, dead time generation and emergency stop |
| - 1x 16-bit timer with 2x IC/OCs, one OCN/PWM, dead time generation and emergency stop |
| - 2x 16-bit timers with IC/OC/OCN/PWM, dead time generation and emergency stop |
| - 2x watchdog timers (independent, window) |
| - 2x 16-bit basic timers |
| - SysTick timer |
| - 1x low-power timer |
| |
| - Up to 86 fast I/Os, most 5 V-tolerant |
| - Memories |
| |
| - Up to 128 KB single bank Flash, proprietary code readout protection |
| - Up to 22 KB of SRAM including 16 KB with hardware parity check |
| |
| - Rich analog peripherals (independent supply) |
| |
| - 2x 12-bit ADC 5 MSPS, up to 16-bit with hardware oversampling, 200 |
| |micro| A/MSPS |
| - 4x 12-bit DAC, low-power sample and hold |
| - 3x operational amplifiers with built-in PGA |
| - 4x ultra-fast rail-to-rail analog comparators |
| |
| - 16x communication interfaces |
| |
| - 1 x FDCAN controller supporting flexible data rate |
| - 3x I2C FM+(1 Mbit/s), SMBus/PMBus |
| - 4x USARTs (ISO 7816, LIN, IrDA, modem) |
| - 1x LPUART |
| - 3x SPIs (2x with multiplexed half duplex I2S interface) |
| - 1x SAI (serial audio interface) |
| - USB 2.0 full-speed interface with LPM and BCD support |
| - IRTIM (Infrared interface) |
| - USB Type-C™ /USB power delivery controller (UCPD) |
| |
| - 12-channel DMA controller |
| - True random number generator (RNG) |
| - CRC calculation unit, 96-bit unique ID |
| - Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell* |
| |
| |
| More information about STM32G474RE can be found here: |
| |
| - `STM32G474RE on www.st.com`_ |
| - `STM32G4 reference manual`_ |
| |
| Supported Features |
| ================== |
| |
| The Zephyr nucleo_g474re 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 | |
| +-----------+------------+-------------------------------------+ |
| | PINMUX | on-chip | pinmux | |
| +-----------+------------+-------------------------------------+ |
| | GPIO | on-chip | gpio | |
| +-----------+------------+-------------------------------------+ |
| | I2C | on-chip | i2c | |
| +-----------+------------+-------------------------------------+ |
| | WATCHDOG | on-chip | independent watchdog | |
| +-----------+------------+-------------------------------------+ |
| | PWM | on-chip | pwm | |
| +-----------+------------+-------------------------------------+ |
| | ADC | on-chip | adc | |
| +-----------+------------+-------------------------------------+ |
| | DAC | on-chip | DAC Controller | |
| +-----------+------------+-------------------------------------+ |
| | FLASH | on-chip | flash memory | |
| +-----------+------------+-------------------------------------+ |
| | COUNTER | on-chip | rtc | |
| +-----------+------------+-------------------------------------+ |
| | SPI | on-chip | spi | |
| +-----------+------------+-------------------------------------+ |
| | die-temp | on-chip | die temperature sensor | |
| +-----------+------------+-------------------------------------+ |
| |
| Other hardware features are not yet supported on this Zephyr port. |
| |
| The default configuration can be found in the defconfig file: |
| ``boards/arm/nucleo_g474re/nucleo_g474re_defconfig`` |
| |
| |
| Connections and IOs |
| =================== |
| |
| Nucleo G474RE Board has 6 GPIO controllers. These controllers are responsible for pin muxing, |
| input/output, pull-up, etc. |
| |
| For mode details please refer to `STM32G4 Nucleo-64 board User Manual`_. |
| |
| Default Zephyr Peripheral Mapping: |
| ---------------------------------- |
| |
| .. rst-class:: rst-columns |
| |
| - UART_1_TX : PC4 |
| - UART_1_RX : PC5 |
| - LPUART_1_TX : PA2 |
| - LPUART_1_RX : PA3 |
| - I2C_1_SCL : PB8 |
| - I2C_1_SDA : PB9 |
| - SPI_1_NSS : PB6 |
| - SPI_1_SCK : PA5 |
| - SPI_1_MISO : PA6 |
| - SPI_1_MOSI : PA7 |
| - SPI_2_NSS : PB12 |
| - SPI_2_SCK : PB13 |
| - SPI_2_MISO : PB14 |
| - SPI_2_MOSI : PB15 |
| - SPI_3_NSS : PA15 |
| - SPI_3_SCK : PC10 |
| - SPI_3_MISO : PC11 |
| - SPI_3_MOSI : PC12 |
| - PWM_2_CH1 : PA5 (might conflict with SPI1) |
| - PWM_3_CH1 : PB4 |
| - USER_PB : PC13 |
| - LD2 : PA5 |
| - ADC1_IN1 : PA0 |
| - DAC1_OUT1 : PA4 |
| |
| System Clock |
| ------------ |
| |
| Nucleo G474RE System Clock could be driven by internal or external oscillator, |
| as well as main PLL clock. By default System clock is driven by PLL clock at 150MHz, |
| driven by 16MHz high speed internal oscillator. The clock can be boosted to 170MHz if boost mode |
| is selected. |
| |
| Serial Port |
| ----------- |
| |
| Nucleo G474RE board has 3 U(S)ARTs. The Zephyr console output is assigned to LPUART1. |
| Default settings are 115200 8N1. |
| |
| Please note that LPUART1 baudrate is limited to 9600 if the MCU is clocked by LSE (32.768 kHz) in |
| low power mode. |
| |
| Programming and Debugging |
| ************************* |
| |
| Applications for the ``nucleo_g474re`` board configuration can be built and |
| flashed in the usual way (see :ref:`build_an_application` and |
| :ref:`application_run` for more details). |
| |
| Flashing |
| ======== |
| |
| Nucleo G474RE board includes an ST-LINK/V3E embedded debug tool interface. |
| |
| Flashing an application to Nucleo G474RE |
| ---------------------------------------- |
| |
| Connect the Nucleo G474RE to your host computer using the USB port, |
| then run a serial host program to connect with your Nucleo board. |
| |
| .. code-block:: console |
| |
| $ minicom -D /dev/ttyACM0 |
| |
| Now build and flash an application. Here is an example for |
| :ref:`hello_world`. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/hello_world |
| :board: nucleo_g474re |
| :goals: build flash |
| |
| You should see the following message on the console: |
| |
| .. code-block:: console |
| |
| $ Hello World! arm |
| |
| |
| 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: nucleo_g474re |
| :maybe-skip-config: |
| :goals: debug |
| |
| .. _Nucleo G474RE website: |
| https://www.st.com/en/evaluation-tools/nucleo-g474re.html |
| |
| .. _STM32G4 Nucleo-64 board User Manual: |
| https://www.st.com/resource/en/user_manual/dm00556337.pdf |
| |
| .. _STM32G474RE on www.st.com: |
| https://www.st.com/en/microcontrollers/stm32g474re.html |
| |
| .. _STM32G4 reference manual: |
| https://www.st.com/resource/en/reference_manual/dm00355726.pdf |