diff --git a/protocol/adb.h b/protocol/adb.h
index 177f4139..1e4ca401 100644
--- a/protocol/adb.h
+++ b/protocol/adb.h
@@ -38,6 +38,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #ifndef ADB_H
 #define ADB_H
 
+#include <stdint.h>
 #include <stdbool.h>
 
 #if !(defined(ADB_PORT) && \
@@ -47,6 +48,10 @@ POSSIBILITY OF SUCH DAMAGE.
 #   error "ADB port setting is required in config.h"
 #endif
 
+#define ADB_POWER       0x7F
+#define ADB_CAPS        0x39
+
+
 // ADB host
 void     adb_host_init(void);
 bool     adb_host_psw(void);