Update system template and freertos port
@@ -351,7 +351,8 @@ esp_sys_mbox_invalid(esp_sys_mbox_t* b) {
/**
* \brief Create a new thread
* \note This function is required with OS
- * \param[out] t: Pointer to thread identifier if create was successful
+ * \param[out] t: Pointer to thread identifier if create was successful.
+ * It may be set to `NULL`
* \param[in] name: Name of a new thread
* \param[in] thread_func: Thread function to use as thread body
* \param[in] arg: Thread function argument
