temp_sensor: add docs for esp32c3

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

@@ -1,10 +1,10 @@
-ESP32-S2 Temperature Sensor
-===========================
+Temperature Sensor
+==================
 
 Overview
 --------
 
-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 {IDF_TARGET_NAME} has a built-in temperature sensor used to measure the chip's internal temperature, and hard to measure the environmental temperature accurately. Being built-in means that the temperature sensor should work on any {IDF_TARGET_NAME} regardless of what board the chip is embedded in. 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.
 
@@ -22,6 +22,34 @@ The conversion relationship is the first columns of the table below. Among them,
 |    2   |       -40 ~ 20         |           < 3          |
 +--------+------------------------+------------------------+
 
+Driver Usage
+------------
+
+1. Initialize the temperature sensor by calling the function :cpp:func:`temp_sensor_set_config` and pass to it a :cpp:type:`temp_sensor_config_t` structure. The :cpp:type:`temp_sensor_config_t` structure should contain all the required parameters. See the example below.
+
+.. code-block:: c
+
+    temp_sensor_config_t temp_sensor = {
+        .dac_offset = TSENS_DAC_L2,
+        .clk_div = 6,
+    };
+    temp_sensor_set_config(temp_sensor);
+
+2. Start the temp_sensor by calling :cpp:func:'temp_sensor_start'. The temperature sensor will now measure the temperature.
+
+3. To get the current temperature, take the example below as a reference, the value you get is in Celsius.
+
+.. code-block:: c
+
+    float tsens_out;
+    temp_sensor_read_celsius(&tsens_out);
+
+4. To stop the temperature sensor, please call :cpp:func:'temp_sensor_stop'.
+
+.. note::
+
+    If you want dynamic reconfiguration, you need to stop the sensor first (temp_sensor_stop), set the new configuration (temp_sensor_set_config), then start the sensor again (temp_sensor_start).
+
 Application Example
 -------------------