From 583d177de0d039aae73faec8d2dadc5ef344edca Mon Sep 17 00:00:00 2001
From: zhushengle <star_rain@tom.com>
Date: Fri, 23 Apr 2021 14:50:27 +0800
Subject: [PATCH] fix:Provide a CPU delay interface

Close #I3NT3Y

Change-Id: I30c984a95a77cbddabdae2900ab8fcf9d7eac1ac
---
 kal/cmsis/cmsis_liteos2.c |  2 +-
 kernel/src/los_task.c     | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/kal/cmsis/cmsis_liteos2.c b/kal/cmsis/cmsis_liteos2.c
index 4c741240..9d6cb289 100644
--- a/kal/cmsis/cmsis_liteos2.c
+++ b/kal/cmsis/cmsis_liteos2.c
@@ -639,7 +639,7 @@ osStatus_t osDelay(uint32_t ticks)
         return osOK;
     }
     if (osKernelGetState() != osKernelRunning) {
-        HalDelay(ticks);
+        LOS_SysDelay(ticks);
     } else {
         uwRet = LOS_TaskDelay(ticks);
     }
diff --git a/kernel/src/los_task.c b/kernel/src/los_task.c
index 8c226c34..c860f3c3 100644
--- a/kernel/src/los_task.c
+++ b/kernel/src/los_task.c
@@ -1296,3 +1296,17 @@ LITE_OS_SEC_TEXT_MINOR VOID LOS_Msleep(UINT32 mSecs)
     (VOID)LOS_TaskDelay(interval);
 }
 
+VOID LOS_SysDelay(UINT32 ticks)
+{
+    UINT64 endTime;
+
+    if (ticks == 0) {
+        return;
+    }
+
+    endTime = LOS_SysCycleGet() + ticks * OS_CYCLE_PER_TICK;
+    while (LOS_SysCycleGet() < endTime) {
+    }
+
+    return;
+}