diff --git a/src/osal/osal.h b/src/osal/osal.h
index d64837205..93ac48b13 100644
--- a/src/osal/osal.h
+++ b/src/osal/osal.h
@@ -80,15 +80,13 @@ typedef void (*osal_task_func_t)( void * );
    *     osal_queue_def_t, osal_queue_t
    *     osal_queue_t osal_queue_create(osal_queue_def_t* qdef)
    *     osal_queue_receive (osal_queue_t const queue_hdl, void *p_data, uint32_t msec, tusb_error_t *p_error)
-   *     bool osal_queue_send_isr(osal_queue_t const queue_hdl, void const * data)
-   *     bool osal_queue_send(osal_queue_t const queue_hdl, void const * data)
+   *     bool osal_queue_send(osal_queue_t const queue_hdl, void const * data, bool in_isr)
    *     osal_queue_flush()  TODO remove
    *
    * Semaphore
    *    osal_semaphore_def_t, osal_semaphore_t
    *    osal_semaphore_t osal_semaphore_create(osal_semaphore_def_t* semdef)
-   *    bool osal_semaphore_post_isr(osal_semaphore_t sem_hdl)
-   *    bool osal_semaphore_post(osal_semaphore_t sem_hdl)
+   *    bool osal_semaphore_post(osal_semaphore_t sem_hdl, bool in_isr)
    *    void osal_semaphore_wait(osal_semaphore_t sem_hdl, uint32_t msec, tusb_error_t *p_error)
    *    void osal_semaphore_reset_isr(osal_semaphore_t const sem_hdl)
    *
diff --git a/src/osal/osal_freertos.h b/src/osal/osal_freertos.h
index 52d34c187..be7e6b38b 100644
--- a/src/osal/osal_freertos.h
+++ b/src/osal/osal_freertos.h
@@ -120,14 +120,9 @@ static inline void osal_queue_receive (osal_queue_t const queue_hdl, void *p_dat
   (*p_error) = ( xQueueReceive(queue_hdl, p_data, ticks) ? TUSB_ERROR_NONE : TUSB_ERROR_OSAL_TIMEOUT);
 }
 
-static inline bool osal_queue_send_isr(osal_queue_t const queue_hdl, void const * data)
+static inline bool osal_queue_send(osal_queue_t const queue_hdl, void const * data, bool in_isr)
 {
-  return xQueueSendToBackFromISR(queue_hdl, data, NULL);
-}
-
-static inline bool osal_queue_send(osal_queue_t const queue_hdl, void const * data)
-{
-  return xQueueSendToBack(queue_hdl, data, OSAL_TIMEOUT_WAIT_FOREVER) == pdTRUE;
+  return in_isr ? xQueueSendToBackFromISR(queue_hdl, data, NULL) : xQueueSendToBack(queue_hdl, data, OSAL_TIMEOUT_WAIT_FOREVER);
 }
 
 static inline void osal_queue_flush(osal_queue_t const queue_hdl)
@@ -147,14 +142,9 @@ static inline osal_semaphore_t osal_semaphore_create(osal_semaphore_def_t* semde
   return xSemaphoreCreateBinaryStatic(semdef);
 }
 
-static inline bool osal_semaphore_post_isr(osal_semaphore_t sem_hdl)
+static inline bool osal_semaphore_post(osal_semaphore_t sem_hdl, bool in_isr)
 {
-  return xSemaphoreGiveFromISR(sem_hdl, NULL) == pdTRUE;
-}
-
-static inline bool osal_semaphore_post(osal_semaphore_t sem_hdl)
-{
-  return xSemaphoreGive(sem_hdl) == pdTRUE;
+  return in_isr ?  xSemaphoreGiveFromISR(sem_hdl, NULL) : xSemaphoreGive(sem_hdl);
 }
 
 static inline void osal_semaphore_wait(osal_semaphore_t sem_hdl, uint32_t msec, tusb_error_t *p_error)
diff --git a/src/osal/osal_mynewt.h b/src/osal/osal_mynewt.h
index 59cd1b821..cb09680e0 100644
--- a/src/osal/osal_mynewt.h
+++ b/src/osal/osal_mynewt.h
@@ -129,10 +129,10 @@ static inline void osal_queue_receive (osal_queue_t const queue_hdl, void *p_dat
   *p_error = TUSB_ERROR_NONE;
 }
 
-#define osal_queue_send_isr   osal_queue_send
-
-static inline bool osal_queue_send(osal_queue_t const queue_hdl, void const * data)
+static inline bool osal_queue_send(osal_queue_t const queue_hdl, void const * data, bool in_isr)
 {
+  (void) in_isr;
+
   // get a block from mem pool for data
   void* ptr = os_memblock_get(&queue_hdl->mpool);
   if (!ptr) return false;
@@ -169,10 +169,9 @@ static inline osal_semaphore_t osal_semaphore_create(osal_semaphore_def_t* semde
   return (os_sem_init(semdef, 0) == OS_OK) ? (osal_semaphore_t) semdef : NULL;
 }
 
-#define osal_semaphore_post_isr   osal_semaphore_post
-
-static inline bool osal_semaphore_post(osal_semaphore_t sem_hdl)
+static inline bool osal_semaphore_post(osal_semaphore_t sem_hdl, bool in_isr)
 {
+  (void) in_isr;
   return os_sem_release(sem_hdl) == OS_OK;
 }
 
diff --git a/src/osal/osal_none.h b/src/osal/osal_none.h
index 22c89868a..91848f221 100644
--- a/src/osal/osal_none.h
+++ b/src/osal/osal_none.h
@@ -133,13 +133,12 @@ static inline osal_queue_t osal_queue_create(osal_queue_def_t* qdef)
   return (osal_queue_t) qdef;
 }
 
-static inline bool osal_queue_send_isr(osal_queue_t const queue_hdl, void const * data)
+static inline bool osal_queue_send(osal_queue_t const queue_hdl, void const * data, bool in_isr)
 {
+  (void) in_isr;
   return tu_fifo_write( (tu_fifo_t*) queue_hdl, data);
 }
 
-#define osal_queue_send osal_queue_send_isr
-
 static inline void osal_queue_flush(osal_queue_t const queue_hdl)
 {
   queue_hdl->count = queue_hdl->rd_idx = queue_hdl->wr_idx = 0;
@@ -182,10 +181,9 @@ static inline osal_semaphore_t osal_semaphore_create(osal_semaphore_def_t* semde
   return semdef;
 }
 
-#define osal_semaphore_post_isr osal_semaphore_post
-
-static inline  bool osal_semaphore_post(osal_semaphore_t sem_hdl)
+static inline  bool osal_semaphore_post(osal_semaphore_t sem_hdl, bool in_isr)
 {
+  (void) in_isr;
   if (sem_hdl->count < sem_hdl->max_count ) sem_hdl->count++;
   return true;
 }