.. zephyr:board:: 3r_tnh_sensor_lite

Overview

The ThirdReality Temperature and Humidity Sensor Lite integrates the BL704L SoC from Bouffalo Lab. Internally, the device breaks out the pinout for JTAG, as well as UART and the bootstrap pin, making it perfectly suited for development. BL704L is a highly integrated 802.15.4 (Zigbee/Thread/Matter) and BLE combo chipset for IoT applications.

Hardware

Pins 17-20 are broken out on the JTAG header.

For more information about the BouffaloLab BL704L MCU and the device:

Bouffalo Lab BL702L MCU Datasheet_
Bouffalo Lab Development Zone_
ThirdReality Temperature and Humidity Sensor Lite_

Supported Features

.. zephyr:board-supported-hw::

System Clock

The Device is configured to run at max speed (128MHz).

Serial Port

The 3r_tnh_sensor_lite board uses UART0 as default serial port.

Programming and Debugging

.. zephyr:board-supported-runners::

Samples

#. Build the Zephyr kernel and the :zephyr:code-sample:hello_world sample application:

.. zephyr-app-commands:: :zephyr-app: samples/hello_world :board: 3r_tnh_sensor_lite :goals: build flash

#. Run your favorite terminal program to listen for output. Under Linux the terminal should be :code:/dev/ttyUSB0. For example:

.. code-block:: console

  $ screen /dev/ttyUSB0 115200

Connection should be configured as follows:

  - Speed: 115200
  - Data: 8 bits
  - Parity: None
  - Stop bits: 1

Then, press and release RST button

.. code-block:: console

  *** Booting Zephyr OS build v4.3 ***
  Hello World! 3r_tnh_sensor_lite/bl704l10q2i

Congratulations, you have 3r_tnh_sensor_lite configured and running Zephyr.

.. _Bouffalo Lab BL702L MCU Datasheet: https://dev.bouffalolab.com/document?id=guest

.. _Bouffalo Lab Development Zone: https://dev.bouffalolab.com/home?id=guest

.. _ThirdReality Temperature and Humidity Sensor Lite: https://thirdreality.com/product/temperature-and-humidity-sensor-lite/