diff --git a/components/dwin/dwin_screen.cpp b/components/dwin/dwin_screen.cpp
index 00a7712..1cc28c2 100644
--- a/components/dwin/dwin_screen.cpp
+++ b/components/dwin/dwin_screen.cpp
@@ -77,7 +77,7 @@ uint16_t DwinScreen::alloc_from(const char* whichrammanager, uint16_t size) {
 }
 
 void DwinScreen::clearrxcache() {
-  CriticalContext cc;
+  // CriticalContext cc;
   txcontext.receipt_ready_flag = false;
   txcontext.receiptlen         = 0;
 }
@@ -98,7 +98,10 @@ bool DwinScreen::sendcmdblock(int overtime) {
     if (txcontext.receipt_ready_flag) {
       return true;
     } else {
-      zos_delay(1);
+      // zos_delay(1);
+      // HAL_Delay(1);
+      osDelay(1);
+
     }
   }
   return false;