diff --git a/APP/bsp_wf5803.c b/APP/bsp_wf5803.c
index 761c9cf..82383ab 100644
--- a/APP/bsp_wf5803.c
+++ b/APP/bsp_wf5803.c
@@ -122,17 +122,12 @@ void SensorData_Process(void)
     // PRINT("T=%d.%d \r\n", (int)temp, ((int)(temp * 100.0f) % 100));
 }
 
-// 1600 = 1s
-// 1ms = 1.6
-
-#define TICK_MS(x) (x * 1.6)
-
 uint16_t wf5803_ProcessEvent(uint8_t task_id, uint16_t events)
 {
     if (events & WF5803_EVT)
     {
         SensorData_Process();
-        tmos_start_task(Peripheral_TaskID, WF5803_EVT, TICK_MS(100));
+        tmos_start_task(Peripheral_TaskID, WF5803_EVT, MS1_TO_SYSTEM_TIME(100));
         return (events ^ WF5803_EVT);
     }
     return 0;