diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 3d469e918..d99ba5ab8 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -73,8 +73,8 @@ TIMER RESOLUTION    MAX VALUE   HALF-DUTY
 #define NAV_BTN         (8)                     // 8 GPIO joystick button
 static int adc_raw[2][10];
 static int voltage[2][10];
-static bool example_adc_calibration_init(adc_unit_t unit, adc_channel_t channel, adc_atten_t atten, adc_cali_handle_t *out_handle);
-static void example_adc_calibration_deinit(adc_cali_handle_t handle);
+static bool adc_calibration_init(adc_unit_t unit, adc_channel_t channel, adc_atten_t atten, adc_cali_handle_t *out_handle);
+static void adc_calibration_deinit(adc_cali_handle_t handle);
 
 #define ESP_INTR_FLAG_DEFAULT 0