| .. _nucleo_l412rb_p_board: |
| |
| ST Nucleo L412RB-P |
| ################## |
| |
| Overview |
| ******** |
| |
| The Nucleo L412RB board features an ARM Cortex-M4 based STM32L412RB MCU |
| with a wide range of connectivity support and configurations. Here are |
| some highlights of the Nucleo L412RB board: |
| |
| - STM32 microcontroller in LQFP64 package |
| - 1 user LED shared with ARDUINO |reg| |
| - 1 user and 1 reset push-buttons |
| - 32.768 kHz crystal oscillator |
| - Two types of extension resources: |
| |
| - Arduino Uno V3 connectivity |
| - ST morpho extension pin headers for full access to all STM32 I/Os |
| |
| - On-board ST-LINK debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port and debug port |
| - Flexible power-supply options: ST-LINK, USB VBUS, or external sources |
| |
| - USB VBUS or external source(3.3V, 5V, 7 - 12V) |
| - Power management access point |
| |
| - Board specific features |
| |
| - External SMPS to generate Vcore logic supply |
| - 24 MHz HSE |
| - Board connectors: |
| |
| - External SMPS experimentation dedicated connector |
| - Micro-AB or Mini-AB USB connector for the ST-LINK |
| - MIPI® debug connector |
| |
| - Arm® Mbed Enabled |trade| compliant |
| |
| .. image:: img/nucleo_l412rb_p.jpg |
| :align: center |
| :alt: Nucleo L412RB |
| |
| More information about the board can be found at the `Nucleo L412RB-P website`_. |
| |
| Hardware |
| ******** |
| |
| Nucleo L412RB-P provides the following hardware components: |
| |
| - STM32L412RBT6 in LQFP64 package |
| - Ultra-low-power with FlexPowerControl |
| |
| - 1.71 V to 3.6 V power supply |
| - -40 °C to 85/125 °C temperature range |
| - 300 nA in VBAT mode: supply for RTC and 32x32-bit backup registers |
| - 16 nA Shutdown mode (4 wakeup pins) |
| - 32 nA Standby mode (4 wakeup pins) |
| - 245 nA Standby mode with RTC |
| - 0.7 |micro| A Stop 2 mode, 0.95 |micro| A with RTC |
| - 79 |micro| A/MHz run mode (LDO Mode) |
| - 28 |micro| A/MHz run mode (@3.3 V SMPS Mode) |
| - Batch acquisition mode (BAM) |
| - 4 |micro| s wakeup from Stop mode |
| - Brown out reset (BOR) |
| - Interconnect matrix |
| |
| - Core: Arm |reg| 32-bit Cortex |reg| -M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator |trade| ) allowing 0-wait-state execution from Flash memory, frequency up to 80 MHz, MPU, 100DMIPS and DSP instructions |
| - Performance benchmark |
| |
| - 1.25 DMIPS/MHz (Drystone 2.1) |
| - 273.55 CoreMark |reg| (3.42 CoreMark/MHz @ 80 MHz) |
| |
| - Energy benchmark |
| |
| - 442 ULPMark-CP® |
| - 165 ULPMark-PP® |
| |
| - Clock Sources: |
| |
| - 4 to 48 MHz crystal oscillator |
| - 32 kHz crystal oscillator for RTC (LSE) |
| - Internal 16 MHz factory-trimmed RC ( |plusminus| 1%) |
| - Internal low-power 32 kHz RC ( |plusminus| 5%) |
| - Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than |plusminus| 0.25 % accuracy) |
| - Internal 48 MHz with clock recovery |
| - PLL for system clock |
| |
| - Up to 52 fast I/Os, most 5 V-tolerant |
| - RTC with HW calendar, alarms and calibration |
| - Up to 12 capacitive sensing channels: support touchkey, linear and rotary touch sensors |
| - 10x timers: |
| |
| - 1x 16-bit advanced motor-control |
| - 1x 32-bit and 2x 16-bit general purpose |
| - 1x 16-bit basic |
| - 2x low-power 16-bit timers (available in Stop mode) |
| - 2x watchdogs |
| - SysTick timer |
| |
| - Memories |
| |
| - 128 KB single bank Flash, proprietary code readout protection |
| - 40 KB of SRAM including 8 KB with hardware parity check |
| - Quad SPI memory interface with XIP capability |
| |
| - Rich analog peripherals (independent supply) |
| |
| - 2x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 |micro| A/Msps |
| - 2x operational amplifiers with built-in PGA |
| - 1x ultra-low-power comparator |
| - Accurate 2.5 V or 2.048 V reference voltage buffered output |
| |
| - 12x communication interfaces |
| - USB 2.0 full-speed crystal less solution with LPM and BCD |
| - 3x I2C FM+(1 Mbit/s), SMBus/PMBus |
| - 3x USARTs (ISO 7816, LIN, IrDA, modem) |
| - 1x LPUART (Stop 2 wake-up) |
| - 2x SPIs (and 1x Quad SPI) |
| - 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 |trade| |
| - All packages are ECOPACK2 compliant |
| |
| Note: the current board revision is C. (MB1319C) |
| |
| More information about STM32L412RB can be found here: |
| |
| - `STM32L412RB on www.st.com`_ |
| - `STM32L412 reference manual`_ |
| |
| Supported Features |
| ================== |
| |
| The Zephyr ``nucleo_l412rb_p`` 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 | |
| +-----------+------------+-------------------------------------+ |
| | SPI | on-chip | spi | |
| +-----------+------------+-------------------------------------+ |
| | ADC | on-chip | ADC Controller | |
| +-----------+------------+-------------------------------------+ |
| | PWM | on-chip | pwm | |
| +-----------+------------+-------------------------------------+ |
| |
| Other hardware features are not yet supported on this Zephyr port. |
| |
| The default configuration can be found in the defconfig file: |
| :zephyr_file:`boards/st/nucleo_l412rb_p/nucleo_l412rb_p_defconfig` |
| |
| |
| Connections and IOs |
| =================== |
| |
| Nucleo L412RB-P Board has 5 GPIO controllers (Ports A, B, C, D and H). These controllers are responsible for pin muxing, |
| input/output, pull-up, etc. |
| |
| Available pins: |
| --------------- |
| .. image:: img/nucleo_l412rb_p_pinout.jpg |
| :align: center |
| :alt: Nucleo L412RB-P |
| |
| For more details please refer to `ST Nucleo L412RB-P User Manual`_. |
| |
| Default Zephyr Peripheral Mapping: |
| ---------------------------------- |
| |
| - LPUART1 TX/RX : PA2/PA3 |
| - I2C1 SCL/SDA : PB8/PB7 (Arduino I2C) |
| - SPI2 CS/SCK/MISO/MOSI : PA11/PB13/PB14/PB15 (Arduino SPI) |
| - UART1 TX/RX : PA9/PA10 |
| - PWM_2_CH1 : PA0 |
| - USER_PB : PC13 |
| - LD4 : PB13 |
| |
| Note: SPI2 CS pin (PB12) is not located on the Arduino connector. |
| |
| System Clock |
| ------------ |
| |
| Nucleo L412RB-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 L412RB-P board has 3 U(S)ARTs and 1 LPUART. The Zephyr console output is assigned to LPUART1. |
| Default settings are 115200 8N1. |
| |
| |
| Programming and Debugging |
| ************************* |
| |
| Nucleo L412RB-P board includes an ST-LINK/V2-1 embedded debug tool interface. |
| |
| Applications for the ``nucleo_l412rb_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 L412RB-P |
| ------------------------------------------ |
| |
| Connect the Nucleo L412RB-P 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_l412rb_p |
| :goals: build flash |
| |
| You should see the following message on the console: |
| |
| .. code-block:: console |
| |
| $ Hello World! nucleo_l412rb_p |
| |
| |
| 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_l412rb_p |
| :maybe-skip-config: |
| :goals: debug |
| |
| .. _Nucleo L412RB-P website: |
| https://www.st.com/en/evaluation-tools/nucleo-l412rb-p.html |
| |
| .. _ST Nucleo L412RB-P User Manual: |
| https://www.st.com/resource/en/user_manual/dm00387966-stm32-nucleo-64-p-boards-stmicroelectronics.pdf |
| |
| .. _STM32L412RB on www.st.com: |
| https://www.st.com/en/microcontrollers-microprocessors/stm32l412rb.html |
| |
| .. _STM32L412 reference manual: |
| https://www.st.com/resource/en/reference_manual/dm00151940-stm32l41xxx42xxx43xxx44xxx45xxx46xxx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf |
| |
| .. _STM32CubeProgrammer: |
| https://www.st.com/en/development-tools/stm32cubeprog.html |