diff --git a/halport/gins.c b/halport/gins.c
index 3ed5e8a..dfa8dc8 100644
--- a/halport/gins.c
+++ b/halport/gins.c
@@ -11,7 +11,7 @@ DEFINE_GLOBAL(TIM_HandleTypeDef, htim6);
 DEFINE_GLOBAL(TIM_HandleTypeDef, htim7);
 DEFINE_GLOBAL(TIM_HandleTypeDef, htim11);
 
-// DEFINE_GLOBAL(I2C_HandleTypeDef, hi2c1);
+DEFINE_GLOBAL(I2C_HandleTypeDef, hi2c1);
 
 DEFINE_GLOBAL(UART_HandleTypeDef, huart1);
 DEFINE_GLOBAL(UART_HandleTypeDef, huart2);