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Application Specific Configuration
5
5-1-9 MASS STORAGE CLASS (MSC) CONFIGURATION
For information on MSC configuration, refer to Section 10-4, “Configuration” on page 173.
5-1-10 PERSONAL HEALTHCARE DEVICE CLASS (PHDC)
CONFIGURATION
For information on PHDC configuration, refer to section 11-2 “Configuration” on page 187.
5-1-11 VENDOR CLASS CONFIGURATION
For information on vendor class configuration, refer to Section 12-2, “Configuration” on
page 207.
5-2 APPLICATION SPECIFIC CONFIGURATION
This section defines the configuration constants related to μC/USB-Device but that are
application-specific. All these configuration constants relate to the RTOS. For many OSs, the
μC/USB-Device task priorities and stack sizes will need to be explicitly configured for the
particular OS (consult the specific OS’s documentation for more information).
These configuration constants should be defined in an application’s app_cfg.h file.
5-2-1 TASK PRIORITIES
As mentioned in section 4-2 “Task Model” on page 58, μC/USB-Device needs one core task
and one optional debug task for its proper operation. The priority of μC/USB-Device’s core
task greatly depends on the USB requirements of your application. For some applications, it
might be better to set it at a high priority, especially if your application requires a lot of
tasks and is CPU intensive. In that case, if the core task has a low priority, it might not be
able to process the bus and control requests on time. On the other hand, for some
applications, you might want to give the core task a low priority, especially if you plan using
asynchronous communication and if you know you will have quite a lot of code in your
callback functions. For more information on the core task, see section 4-2 “Task Model” on
page 58.
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