Added yield to lower CPU usage when no characters are arriving.

2011-05-10 22:00:32 +00:00
parent e85ab0b49f
commit b863996349
2 changed files with 6 additions and 3 deletions
@@ -217,6 +217,9 @@ static void *dlmstp_master_fsm_task(void *pArg)
        if (MSTP_Port.ReceivedValidFrame == false &&
            MSTP_Port.ReceivedInvalidFrame == false) {
            RS485_Check_UART_Data(&MSTP_Port);
+            if (MSTP_Port.DataAvailable == false) {
+                sched_yield();
+            }
            MSTP_Receive_Frame_FSM(&MSTP_Port);
        }
        if (MSTP_Port.ReceivedValidFrame || MSTP_Port.ReceivedInvalidFrame) {
@@ -241,9 +244,9 @@ static void *dlmstp_master_fsm_task(void *pArg)
                    break;
            }
        }
-        if (run_master)
+        if (run_master) {
            MSTP_Master_Node_FSM(&MSTP_Port);
-
+        }
    }

    return NULL;