OSTimeDlyHMSM函数

1.os_time.c里面

　　#if OS_TIME_DLY_HMSM_EN > 0
　　INT8U OSTimeDlyHMSM (INT8U hours, INT8U minutes, INT8U seconds, INT16U ms)

2.有一次竟然把参数 ms赋了1000，殊不知最大值为999，

*Arguments : hours specifies the number of hours that the task will be delayed (max. is 255)
* minutes specifies the number of minutes (max. 59)
* seconds specifies the number of seconds (max. 59)
* milli specifies the number of milliseconds (max. 999)

3.所以在调用库函数的过程中要搞清楚函数的参数

4.另外在阅读系统函数的过程中，可以汲取编程风格。比如：OSTimeDlyHMSM函数

  

/*
*********************************************************************************************************
* DELAY TASK FOR SPECIFIED TIME
*
* Description: This function is called to delay execution of the currently running task until some time
*                     expires. This call allows you to specify the delay time in HOURS, MINUTES, SECONDS and
*                     MILLISECONDS instead of ticks.
*
* Arguments :  hours specifies the number of hours that the task will be delayed (max. is 255)
* 　　　　　　　 minutes specifies the number of minutes (max. 59)
*   　　　　　　  seconds specifies the number of seconds (max. 59)
* 　　　　　　    milli specifies the number of milliseconds (max. 999)
*
* Returns : OS_ERR_NONE
* 　　　　　 OS_ERR_TIME_INVALID_MINUTES
* 　　　　    OS_ERR_TIME_INVALID_SECONDS
*　　　　     OS_ERR_TIME_INVALID_MS
*　　　　     OS_ERR_TIME_ZERO_DLY
* 　　　　    OS_ERR_TIME_DLY_ISR
*
* Note(s) : The resolution on the milliseconds depends on the tick rate. For example, you can't do
* 　　　　    a 10 mS delay if the ticker interrupts every 100 mS. In this case, the delay would be
*　　　　　  set to 0. The actual delay is rounded to the nearest tick.
*********************************************************************************************************
*/