ContextQMD
Back to Zephyr

Overview

boards/dptechnics/walter/doc/index.rst

4.4.02.5 KB
Original Source

.. zephyr:board:: walter

Overview

Walter is a compact IoT development board that combines an Espressif ESP32-S3 SoC with a Sequans Monarch 2 GM02SP LTE-M/NB-IoT/GNSS modem. More information about Walter can be found on the QuickSpot Website_ and on the QuickSpot GitHub page_.

Hardware

ESP32-S3-WROOM-1-N16R2 microcontroller:

  • Xtensa dual-core 32-bit LX7 CPU
  • 16 MiB quad SPI flash memory
  • 2 MiB quad SPI PSRAM
  • 150 Mbps 802.11 b/g/n Wi-Fi 4 with on-board PCB antenna
  • 2 Mbps Bluetooth 5 Low Energy with on-board PCB antenna

Sequans Monarch 2 GM02SP modem:

  • Dual-mode LTE-M / NB-IoT (NB1, NB2)
  • 3GPP LTE release 14 (Upgradable up to release 17)
  • Ultra-low, deep-sleep mode in eDRX and PSM
  • Adaptive +23 dBm, +20 dBm and +14 dBm output power
  • Integrated LNA and SAW filter for GNSS reception
  • Assisted and non-assisted GNSS with GPS and Galileo constellations
  • Integrated SIM card
  • Nano-SIM card slot
  • u.FL RF connectors for GNSS and 5G antennas

Inputs & outputs:

  • 24 GPIO pins for application use
  • UART, SPI, I²C, CAN, I²S, and SD available on any of the GPIO pins
  • ADC, DAC, and PWM integrated in ESP32-S3
  • 3.3 V software-controllable output
  • USB Type-C connector for flashing and debugging
  • 22 test points for production programming and testing
  • On-board reset button

Power supply

  • 5.0 V via USB Type-C
  • 3.0 - 5.5 V via Vin pin
  • Not allowed to use both power inputs simultaneously
  • Designed for extremely low quiescent current

Form factor

  • Easy to integrate via 2.54 mm headers
  • 55 mm x 24.8 mm board dimensions
  • Pin and footprint compatible with EOL Pycom GPy
  • Breadboard friendly

.. include:: ../../../espressif/common/soc-esp32-features.rst :start-after: espressif-soc-esp32-features

Supported Features

.. zephyr:board-supported-hw::

System Requirements

.. include:: ../../../espressif/common/system-requirements.rst :start-after: espressif-system-requirements

Programming and Debugging

.. zephyr:board-supported-runners::

.. include:: ../../../espressif/common/building-flashing.rst :start-after: espressif-building-flashing

.. include:: ../../../espressif/common/board-variants.rst :start-after: espressif-board-variants

Debugging

.. include:: ../../../espressif/common/openocd-debugging.rst :start-after: espressif-openocd-debugging

References

.. target-notes::

.. _QuickSpot Website: https://www.quickspot.io/ .. _QuickSpot GitHub page: https://github.com/QuickSpot