doc: updated comments

include/zh_inclinometer.h

@@ -2,7 +2,7 @@
  * @file zh_inclinometer.h
  *
  * @brief Header file for the zh_inclinometer library providing encoder-based
- *        angle measurement and position tracking functionality.
+ * angle measurement and position tracking functionality.
  *
  * This library implements an inclinometer interface based on a quadrature
  * encoder connected to two GPIO pins. It uses the ESP-IDF pulse counter
@@ -99,7 +99,7 @@ extern "C"
      * PCNT unit, frees the inclinometer handle memory, and sets the handle to
      * NULL.
      *
-     * @param[in,out] handle Pointer to the unique inclinometer handle (must not be NULL)
+     * @param[in,out] handle Pointer to the inclinometer handle pointer (will be set to NULL)
      *
      * @note After deinitialization, the handle is invalidated and must not be
      *       used. Call zh_inclinometer_init() again to reinitialize.

zh_inclinometer.c

@@ -101,7 +101,10 @@ esp_err_t zh_inclinometer_get(zh_inclinometer_handle_t **handle, float *angle)
     ZH_ERROR_CHECK(pcnt_unit_get_count((*handle)->pcnt_unit_handle, &pcnt_count) == ESP_OK, ESP_FAIL, NULL, "Inclinometer get position failed. PCNT unit get count fail.");
     float angle_temp = pcnt_count * (*handle)->degrees_per_pulse;
     *angle = (*handle)->rotation == true ? angle_temp : -angle_temp;
-    *angle += 0.0f;
+    if (*angle == 0.0)
+    {
+        *angle = 0.0;
+    }
     ZH_LOGI("Inclinometer get position completed successfully.");
     return ESP_OK;
 }