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-rw-r--r--include/rtdef.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/rtdef.h b/include/rtdef.h
index 479629c9aa..4e414d3041 100644
--- a/include/rtdef.h
+++ b/include/rtdef.h
@@ -55,6 +55,7 @@ typedef rt_uint32_t rt_off_t; /* Type for offset. */
#define RT_UINT8_MAX 0xff /* Maxium number of UINT8. */
#define RT_UINT16_MAX 0xffff /* Maxium number of UINT16. */
#define RT_UINT32_MAX 0xffffffff /* Maxium number of UINT32. */
+#define RT_TICK_MAX RT_UINT32_MAX /* Maxium number of tick */
/* Compiler Related Definitions */
#ifdef __CC_ARM /* ARM Compiler */