diff --git a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_fmrx.h b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_fmrx.h
index 03e61039fe..2638060591 100644
--- a/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_fmrx.h
+++ b/bsp/bluetrum/libraries/hal_libraries/ab32vg1_hal/include/api_fmrx.h
@@ -3,39 +3,39 @@
 
 /**
  * @brief Synchronize between FMRX and DAC
- * 
+ *
  * @param buf_size Size of audio buffer.
  */
 void fmrx_dac_sync(uint32_t buf_size);
 
 /**
  * @brief FMRX power on.
- * 
+ *
  * @param val Make it zero now.
  */
 void fmrx_power_on(uint32_t val);
 
 /**
  * @brief FMRX power off.
- * 
+ *
  */
 void fmrx_power_off(void);
 
 /**
  * @brief FMRX digital start.
- * 
+ *
  */
 void fmrx_digital_start(void);
 
 /**
  * @brief FMRX digital stop.
- * 
+ *
  */
 void fmrx_digital_stop(void);
 
 /**
  * @brief FMRX dma to aubuf enable.
- * 
+ *
  * @param enable RT_TRUE or RT_FALSE.
  */
 void fmrx_dma_to_aubuf(uint8_t enable);