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Chapter 12
L12-8(3)
You can modify this string to give a new name to the device group in which
your device will appear under Device Manager. In this example, “Micrium
Vendor Specific Device” will appear under the “USB Sample Class” group. Refer
to Figure 3-1 “Windows Device Manager Example for a CDC Device” on
page 50 for an illustration of the strings use by Windows.
12-4-3 RUNNING THE DEMO APPLICATION
12
Figure 12-3 presents the Echo demo with host and device interactions:
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Figure 12-3 Echo Demo
F12-3(1)
The Windows application executes a simple protocol consisting of sending a
header indicating the total payload size, sending the data payload to the device
and receiving the same data payload from the device. The entire transfer for
data payload is split into small chunks of write and read operations of 512
bytes. The write operation is done using a bulk OUT endpoint and the read
uses a bulk IN endpoint.
224
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