temperature_sensor: Add temperature sensor support for ESP32-C2

components/efuse/esp32c2/include/esp_efuse_rtc_calib.h

@@ -0,0 +1,26 @@
+/*
+ * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <esp_types.h>
+#include <esp_err.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Get the temperature sensor calibration number delta_T stored in the efuse.
+ *
+ * @param tsens_cal Pointer of the specification of temperature sensor calibration number in efuse.
+ *
+ * @return ESP_OK if get the calibration value successfully.
+ *         ESP_ERR_INVALID_ARG if can't get the calibration value.
+ */
+esp_err_t esp_efuse_rtc_calib_get_tsens_val(float* tsens_cal);
+
+#ifdef __cplusplus
+}
+#endif