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-rw-r--r--tinyusb/osal/osal_none.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/tinyusb/osal/osal_none.h b/tinyusb/osal/osal_none.h
index 853f33e67..775febc3f 100644
--- a/tinyusb/osal/osal_none.h
+++ b/tinyusb/osal/osal_none.h
@@ -58,6 +58,9 @@
extern "C" {
#endif
+// variable that retains value after OSAL blocking service need to declare with OSAL_VAR
+#define OSAL_VAR static
+
//--------------------------------------------------------------------+
// TICK API
//--------------------------------------------------------------------+