diff --git a/sdk b/sdk
index 46b99dd..ec9aaef 160000
--- a/sdk
+++ b/sdk
@@ -1 +1 @@
-Subproject commit 46b99dd9fdb301314155efa2d5728cc863f59636
+Subproject commit ec9aaef27a8c4c88db168b48b214592068758ac7
diff --git a/usrc/main.cpp b/usrc/main.cpp
index b4ae1cf..04c06d4 100644
--- a/usrc/main.cpp
+++ b/usrc/main.cpp
@@ -122,6 +122,7 @@ void umain() {
   input[6].initAsInput(ARM_SENSOR7_GPIO, ZGPIO::kMode_nopull, ZGPIO::kIRQ_noIrq, false);
   input[7].initAsInput(ARM_SENSOR8_GPIO, ZGPIO::kMode_nopull, ZGPIO::kIRQ_noIrq, false);
 
+#if 0
   {
     xyRobotCtrlModule.initialize(&motora, &motorb, &input[6], &input[7], 1.0f);
     XYRobotCtrlModule::run_param_t param;
@@ -151,7 +152,7 @@ void umain() {
     stepMotorCtrlModule.initialize(1, &motora, &input[6], NULL);
     zcanStepMotorCtrlModule.initialize(&zcanCmder, 1, &stepMotorCtrlModule);
   }
-
+#endif
   extern DMA_HandleTypeDef hdma_usart2_rx;
   extern DMA_HandleTypeDef hdma_usart2_tx;