diff --git a/Core/Inc/sys_conf.h b/Core/Inc/sys_conf.h
index bcb45b4..6059cf0 100644
--- a/Core/Inc/sys_conf.h
+++ b/Core/Inc/sys_conf.h
@@ -46,8 +46,11 @@ extern "C" {
 
 /**
   * @brief  Verbose level for all trace logs
+  * #define VLEVEL_L 1       just essential traces
+  * #define VLEVEL_M 2       functional traces
+  * #define VLEVEL_H 3       all traces
   */
-#define VERBOSE_LEVEL                        VLEVEL_L
+#define VERBOSE_LEVEL                        VLEVEL_M
 
 /**
   * @brief Enable trace logs
diff --git a/Core/Src/gpio.c b/Core/Src/gpio.c
index 87554f3..147e89a 100644
--- a/Core/Src/gpio.c
+++ b/Core/Src/gpio.c
@@ -101,6 +101,7 @@ void MX_GPIO_Init(void)
   GPIO_InitStruct.Pull = GPIO_PULLUP;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 #endif
+#if 0
   /*Configure GPIO pins : PBPin PBPin */
   GPIO_InitStruct.Pin = PROB2_Pin|PROB1_Pin;
   GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
@@ -113,6 +114,7 @@ void MX_GPIO_Init(void)
   GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
   GPIO_InitStruct.Pull = GPIO_PULLUP;
   HAL_GPIO_Init(BUT3_GPIO_Port, &GPIO_InitStruct);
+#endif
 
 #ifdef STS_O7
   HAL_NVIC_SetPriority(HALL1_EXTI_IRQn, 15, 0);
@@ -124,8 +126,9 @@ void MX_GPIO_Init(void)
   HAL_NVIC_SetPriority(A111_SENSOR_INTERRUPT_EXTI_IRQn, 0, 0);
   HAL_NVIC_EnableIRQ(A111_SENSOR_INTERRUPT_EXTI_IRQn);
 
-  HAL_NVIC_SetPriority(EXTI3_IRQn, 0, 0);
-  HAL_NVIC_EnableIRQ(EXTI3_IRQn);
+// duplicated, removed at 2024-07-14
+//  HAL_NVIC_SetPriority(EXTI3_IRQn, 0, 0);
+//  HAL_NVIC_EnableIRQ(EXTI3_IRQn);
 
 #else
   /* EXTI interrupt init*/
diff --git a/Core/Src/stm32wlxx_it.c b/Core/Src/stm32wlxx_it.c
index 368f2c1..5cb1f11 100644
--- a/Core/Src/stm32wlxx_it.c
+++ b/Core/Src/stm32wlxx_it.c
@@ -236,7 +236,7 @@ void EXTI0_IRQHandler(void)
 	HAL_GPIO_EXTI_IRQHandler(HALL1_Pin);
 #else
   HAL_GPIO_EXTI_IRQHandler(BUT1_Pin);
-  sts_reed_hall_change_flag = 1;
+
 #endif
   /* USER CODE BEGIN EXTI0_IRQn 1 */