.. zephyr:board:: nucleo_l433rc_p

Overview

The Nucleo L433RC board features an ARM Cortex-M4 based STM32L433RC MCU with a wide range of connectivity support and configurations. Here are some highlights of the Nucleo L433RC board:

STM32 microcontroller in LQFP64 package
Arduino Uno V3 connectivity
On-board ST-LINK/V2-1 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 (LD4)
One push-button: RESET

More information about the board can be found at the Nucleo L433RC-P website_.

Hardware

The STM32L433RC SoC provides the following hardware IPs:

Ultra-low-power with FlexPowerControl (down to 28 nA Standby mode and 84 µA/MHz run mode)
Core: ARM® 32-bit Cortex®-M4 CPU with FPU, frequency up to 80 MHz, 100DMIPS/1.25DMIPS/MHz (Dhrystone 2.1)
Clock Sources:
- 32 kHz crystal oscillator for RTC (LSE)
- Internal 16 MHz factory-trimmed RC (±1%)
- Internal low-power 32 kHz RC (±5%)
- Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy)
- 2 PLLs for system clock, USB, audio, ADC
RTC with HW calendar, alarms and calibration
Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
11x timers:
- 1x 16-bit advanced motor-control
- 1x 32-bit and 2x 16-bit general purpose
- 2x 16-bit basic
- 2x low-power 16-bit timers (available in Stop mode)
- 2x watchdogs
- SysTick timer
Up to 83 fast I/Os, most 5 V-tolerant
Memories
- Up to 256 KB single bank Flash, proprietary code readout protection
- 64 KB of SRAM including 16 KB with hardware parity check
- Quad SPI memory interface
Rich analog peripherals (independent supply)
- 1x 12-bit ADC 5 MSPS, up to 16-bit with hardware oversampling, 200 µA/MSPS
- 2x 12-bit DAC output channels, low-power sample and hold
- 1x operational amplifiers with built-in PGA
- 2x ultra-low-power comparators
17x communication interfaces
- USB 2.0 full-speed crystal less solution with LPM and BCD
- 1x SAI (serial audio interface)
- 3x I2C FM+(1 Mbit/s), SMBus/PMBus
- 4x USARTs (ISO 7816, LIN, IrDA, modem)
- 1x LPUART (Stop 2 wake-up)
- 3x SPIs (and 1x Quad SPI)
- CAN (2.0B Active) and SDMMC interface
- SWPMI single wire protocol master I/F
- IRTIM (Infrared interface)
14-channel DMA controller
True random number generator
CRC calculation unit, 96-bit unique ID
Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell*

More information about STM32L433RC can be found here:

STM32L433RC on www.st.com_
STM32L432 reference manual_

Supported Features

.. zephyr:board-supported-hw::

.. note:: CAN feature requires CAN transceiver

Connections and IOs

Nucleo L433RC-P Board has 6 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.

Available pins:

.. image:: img/nucleo_l433rc_p_pinout.jpg :align: center :alt: Nucleo L433RC-P

For more details please refer to ST Nucleo L433RC-P User Manual_.

Default Zephyr Peripheral Mapping:

LPUART_1_TX : PA2
LPUART_1_RX : PA3
UART_1_TX : PA9
UART_1_RX : PA10
I2C_1_SCL : PB6
I2C_1_SDA : PB7
PWM_2_CH1 : PA0
LD4 : PB13
SPI_1: NSS/SCK/MISO/MOSI : PA4/PA5/PA6/PA7
SPI_2: NSS/SCK/MISO/MOSI : PA11/PB13/PB14/PB15 (Arduino SPI)

System Clock

Nucleo L433RC-P 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 80MHz, driven by 16MHz high speed internal oscillator.

Serial Port

Nucleo L433RC-P board has 4 U(S)ARTs and 1 LPUART. The Zephyr console output is assigned to LPUART1. Default settings are 115200 8N1.

Programming and Debugging

.. zephyr:board-supported-runners::

Nucleo L433RC-P board includes an ST-LINK/V2-1 embedded debug tool interface.

Applications for the nucleo_l433rc_p 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 board is configured to be flashed using west STM32CubeProgrammer_ runner, so its :ref:installation <stm32cubeprog-flash-host-tools> is required.

Alternatively, OpenOCD or JLink can also be used to flash the board using the --runner (or -r) option:

.. code-block:: console

$ west flash --runner openocd $ west flash --runner jlink

Flashing an application to Nucleo L433RC-P

Connect the Nucleo L433RC-P to your host computer using the USB port, then run a serial host program to connect with your Nucleo board.

.. code-block:: console

$ picocom /dev/ttyACM0 -b 115200

Now build and flash an application. Here is an example for :zephyr:code-sample:hello_world.

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: nucleo_l433rc_p :goals: build flash

You should see the following message on the console:

.. code-block:: console

$ Hello World! nucleo_l433rc_p

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: nucleo_l433rc_p :maybe-skip-config: :goals: debug

.. _Nucleo L433RC-P website: https://www.st.com/en/evaluation-tools/nucleo-l433rc-p.html

.. _ST Nucleo L433RC-P User Manual: https://www.st.com/resource/en/user_manual/dm00387966.pdf

.. _STM32L433RC on www.st.com: https://www.st.com/en/microcontrollers-microprocessors/stm32l433rc.html

.. _STM32L432 reference manual: https://www.st.com/resource/en/reference_manual/dm00151940.pdf

.. _STM32CubeProgrammer: https://www.st.com/en/development-tools/stm32cubeprog.html