diff --git a/api/apibasic/cmdid.hpp b/api/apibasic/cmdid.hpp
index 8f7bb21..be6ab30 100644
--- a/api/apibasic/cmdid.hpp
+++ b/api/apibasic/cmdid.hpp
@@ -89,7 +89,7 @@ typedef enum {
   /***********************************************************************************************************************
    *                                                        BOARD                                                        *
    ***********************************************************************************************************************/
-  kboard_read_ext_inio               = CMDID(103, 1),  // para:{index}, ack:{state}
+  kboard_read_ext_inio             = CMDID(103, 1),  // para:{index}, ack:{state}
   kboard_write_ext_outio           = CMDID(103, 2),  // para:{index,state}, ack:{}
   kboard_read_muti_inio            = CMDID(103, 3),  // para:{}, ack:{states}
   kboard_read_inio_index_in_stm32  = CMDID(103, 4),  // para:{index}, ack:{index_in_stm32}