diff --git a/api/apibasic/cmdid.cpp b/api/apibasic/cmdid.cpp
index eb5f976..779fdfd 100644
--- a/api/apibasic/cmdid.cpp
+++ b/api/apibasic/cmdid.cpp
@@ -69,6 +69,8 @@ static cmdinfo_t table[] = {
     CMD_ITERM(kboard_read_ext_io),
     CMD_ITERM(kboard_write_ext_io),
     CMD_ITERM(kboard_read_muti_io),
+    CMD_ITERM(kboard_read_inio_index_in_stm32),
+    CMD_ITERM(kboard_read_outio_index_in_stm32),
 
     CMD_ITERM(kcode_scaner_start_scan),
     CMD_ITERM(kcode_scaner_stop_scan),
diff --git a/api/apibasic/cmdid.hpp b/api/apibasic/cmdid.hpp
index 3278da0..798516f 100644
--- a/api/apibasic/cmdid.hpp
+++ b/api/apibasic/cmdid.hpp
@@ -88,9 +88,11 @@ typedef enum {
   /***********************************************************************************************************************
    *                                                        BOARD                                                        *
    ***********************************************************************************************************************/
-  kboard_read_ext_io  = CMDID(103, 1),  // para:{}, ack:{4}
-  kboard_write_ext_io = CMDID(103, 2),  // para:{}, ack:{4}
-  kboard_read_muti_io = CMDID(103, 3),  // para:{}, ack:{4}
+  kboard_read_ext_io               = CMDID(103, 1),  // para:{}, ack:{4}
+  kboard_write_ext_io              = CMDID(103, 2),  // para:{}, ack:{4}
+  kboard_read_muti_io              = CMDID(103, 3),  // para:{}, ack:{4}
+  kboard_read_inio_index_in_stm32  = CMDID(103, 4),  // para:{index}, ack:{index_in_stm32}
+  kboard_read_outio_index_in_stm32 = CMDID(103, 5),  // para:{index}, ack:{index_in_stm32}
 
   /***********************************************************************************************************************
    *                                                        CODE_SCANER                                                   *
diff --git a/api/zi_motor.hpp b/api/zi_motor.hpp
index aa2ef21..005dcdb 100644
--- a/api/zi_motor.hpp
+++ b/api/zi_motor.hpp
@@ -148,5 +148,7 @@ class ZIStepMotor {
   virtual int32_t step_motor_read_tmc4361a_state(int32_t* gstate)  = 0;
   virtual int32_t step_motor_read_tmc2160_status(int32_t* status)  = 0;
   virtual int32_t step_motor_read_tmc2160_state(int32_t* status)   = 0;
+
+  virtual int32_t step_motor_read_io_index_in_stm32(int32_t ioindex, int32_t* index_in_stm32) = 0;
 };
-}  // namespace iflytop
\ No newline at end of file
+}  // namespace iflytop