temp_sensor: add calibration for esp32c3

examples/peripherals/temp_sensor/main/CMakeLists.txt

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+idf_component_register(SRCS "temp_sensor_main.c"
+                    INCLUDE_DIRS ".")

examples/peripherals/temp_sensor/main/component.mk

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+#
+# "main" pseudo-component makefile.
+#
+# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)

examples/peripherals/temp_sensor/main/temp_sensor_main.c

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+/* Temperature Sensor Example
+
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include "esp_log.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+/* Note: ESP32 don't support temperature sensor */
+
+#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32C3
+#include "driver/temp_sensor.h"
+
+static const char *TAG = "TempSensor";
+
+void tempsensor_example(void *arg)
+{
+    // Initialize touch pad peripheral, it will start a timer to run a filter
+    ESP_LOGI(TAG, "Initializing Temperature sensor");
+    float tsens_out;
+    temp_sensor_config_t temp_sensor = TSENS_CONFIG_DEFAULT();
+    temp_sensor_get_config(&temp_sensor);
+    ESP_LOGI(TAG, "default dac %d, clk_div %d", temp_sensor.dac_offset, temp_sensor.clk_div);
+    temp_sensor.dac_offset = TSENS_DAC_DEFAULT; // DEFAULT: range:-10℃ ~  80℃, error < 1℃.
+    temp_sensor_set_config(temp_sensor);
+    temp_sensor_start();
+    ESP_LOGI(TAG, "Temperature sensor started");
+    while (1) {
+        vTaskDelay(1000 / portTICK_RATE_MS);
+        temp_sensor_read_celsius(&tsens_out);
+        ESP_LOGI(TAG, "Temperature out celsius %f°C", tsens_out);
+    }
+    vTaskDelete(NULL);
+}
+
+void app_main(void)
+{
+    xTaskCreate(tempsensor_example, "temp", 2048, NULL, 5, NULL);
+}
+
+#elif CONFIG_IDF_TARGET_ESP32
+
+void app_main(void)
+{
+    printf("ESP32 don't support temperature sensor\n");
+}
+
+#endif