Merge pull request #4688 from AnHardt/crittical_section

Repair MarlinSerial with TX-buffer
8 years ago · 13e337ac4b
parent 6b274e563d 7e36b76af2
commit 13e337ac4b
1 changed files with 5 additions and 4 deletions
--- a/Marlin/MarlinSerial.cpp
+++ b/Marlin/MarlinSerial.cpp
@ -244,10 +244,11 @@ void MarlinSerial::flush(void) {
    }

    tx_buffer.buffer[tx_buffer.head] = c;
-    CRITICAL_SECTION_START;
-      tx_buffer.head = i;
-      SBI(M_UCSRxB, M_UDRIEx);
-    CRITICAL_SECTION_END;
+    { CRITICAL_SECTION_START;
+        tx_buffer.head = i;
+        SBI(M_UCSRxB, M_UDRIEx);
+      CRITICAL_SECTION_END;
+    }
    return;
  }