feat: add ISR context check API

Signed-off-by: Don Dominic <[email protected]>

Author: Don Dominic

Source/os.h

@@ -1897,6 +1897,7 @@ void          OSInit                    (OS_ERR                *p_err);
 
 void          OSIntEnter                (void);
 void          OSIntExit                 (void);
+CPU_BOOLEAN   OSIntIsInIsr              (void);
 
 #if (OS_CFG_SCHED_ROUND_ROBIN_EN > 0u)
 void          OSSchedRoundRobinCfg      (CPU_BOOLEAN            en,

Source/os_core.c

@@ -403,6 +403,35 @@ void  OSIntExit (void)
 }
 
 
+/*
+************************************************************************************************************************
+*                                                     ISR CHECK
+*
+* Description: This function is called to check if the current context is in an ISR or not.
+*
+* Arguments  : none
+*
+* Returns    : If current context is in iSR (OS_TRUE) or not (OS_FALSE).
+*
+* Note(s)    : none
+************************************************************************************************************************
+*/
+
+CPU_BOOLEAN  OSIntIsInIsr (void)
+{
+    CPU_BOOLEAN in_isr;
+
+    if (OSIntNestingCtr > 0u) {
+       in_isr = OS_TRUE;
+    }
+    else {
+       in_isr = OS_FALSE;
+    }
+
+    return (in_isr);
+}
+
+
 /*
 ************************************************************************************************************************
 *                                    INDICATE THAT IT'S NO LONGER SAFE TO CREATE OBJECTS