esp-idf/docs/en/api-reference/peripherals/temp_sensor.rst

ESP32-S2 Temperature Sensor
===========================

Overview
--------

.. only:: esp32

    .. note::

        ESP32 does not have a built-in temperature sensor.

.. only:: esp32s2

    The ESP32-S2 has a built-in temperature sensor. The temperature sensor module contains an 8-bit Sigma-Delta ADC and a temperature offset DAC.
    The conversion relationship is the first columns of the table below. Among them, offset = 0 is the main measurement option, and other values are extended measurement options.

    +--------+------------------------+------------------------+
    | offset | measure range(Celsius) | measure error(Celsius) |
    +========+========================+========================+
    |   -2   |        50 ~ 125        |           < 3          |
    +--------+------------------------+------------------------+
    |   -1   |        20 ~ 100        |           < 2          |
    +--------+------------------------+------------------------+
    |    0   |       -10 ~ 80         |           < 1          |
    +--------+------------------------+------------------------+
    |    1   |       -30 ~ 50         |           < 2          |
    +--------+------------------------+------------------------+
    |    2   |       -40 ~ 20         |           < 3          |
    +--------+------------------------+------------------------+

Application Example
-------------------

Temperature sensor reading example: :example:`peripherals/temp_sensor`.

API Reference - Normal Temp Sensor
----------------------------------

.. include-build-file:: inc/temp_sensor.inc