Porting PHDC to a RTOS
Figure 11-6 shows the demo application with a few items added.
11
Figure 11-6 Demo Application with five Items Added
11-6 PORTING PHDC TO A RTOS
Since PHDC communication functions can be called from different tasks at application level,
there is a need to protect the resources they use (in this case, the endpoint). Furthermore,
since it is possible to send data with different QoS using a single bulk endpoint, an
application might want to prioritize the transfers by their QoS (i.e. medium latency transfers
processed before high latency transfers).
This kind of prioritization can be
implemented/customized inside the RTOS layer (see Section 11-4, “RTOS QoS-based
scheduler” on page 196, for more information). By default, Micriμm will provide an RTOS
layer for both μC/OS-II and μC/OS-III. However, it is possible to create your own RTOS
layer. Your layer will need to implement the functions listed in Table 11-15. For a complete
API description, see Appendix F, “PHDC API Reference” on page 441.
203
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