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Some of the time management services must be enabled by seting configuration constants in OS_CFG.H. Specifically, table 5.1 shows which services are compiled based on the value of configuration constants found in OS_CFG.H.
Table 5.1 Time Management configuration constants in OS_CFG.H.
µC/OS-II Time Management Service | Enabled when set to 1 in |
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Delaying a Task, OSTimeDly()
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It is important to realize that the resolution of a delay is between zero and one tick. In other words, if you try to delay for only one tick, you could end up with an intermediate delay between 0 and 1 tick. This is assuming, however, that your processor is not heavily loaded. Figure 5.1 illustrates what happens.Figure 5.1 Delay resolution.
Delaying a Task, OSTimeDlyHMSM()
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