update

usersrc/usermain.c

@@ -100,13 +100,16 @@ void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
 
 void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
 {
+  if (htim == &htim4)
+  {
     if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_1)
     {
-    printf("channel 1\r\n");
+      printf("tim4 channel 1\r\n");
     }
     else if (htim->Channel == HAL_TIM_ACTIVE_CHANNEL_2)
     {
-    printf("channel 2\r\n");
+      printf("tim4 channel 2\r\n");
+    }
   }
 }