diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 9d513a9f4..d16539fbd 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -73,7 +73,7 @@ TIMER RESOLUTION    MAX VALUE   HALF-DUTY
 #define ADC_ATTEN       ADC_ATTEN_DB_6
 #define ADC_BIT_WIDTH   SOC_ADC_DIGI_MAX_BITWIDTH
 #define ADC_UNIT        ADC_UNIT_1
-#define ADC_CONV_MODE   ADC_CONV_SINGLE_UNIT_1
+#define ADC_CONV_MODE   ADC_CONV_BOTH_UNIT// ADC_CONV_SINGLE_UNIT_1
 #define ADC_OUTPUT_TYPE ADC_DIGI_OUTPUT_FORMAT_TYPE2    // ESP32C3
 #define READ_LEN        256
 #define ADC_GET_CHANNEL(p_data)     ((p_data)->type2.channel)