77 lines
3.0 KiB
Plaintext
77 lines
3.0 KiB
Plaintext
system/composite
|
|
^^^^^^^^^^^^^^^^^^
|
|
|
|
This logic adds a NSH command to control a USB composite device. The only
|
|
supported devices in the composite are CDC/ACM serial and a USB mass storage
|
|
device. Which devices are enclosed in a composite device is configured with
|
|
an array of configuration-structs, handed over to the function
|
|
composite_initialize().
|
|
|
|
Required overall configuration:
|
|
|
|
Enable the USB Support of your Hardware / Processor e.g. SAMV7_USBDEVHS=y
|
|
|
|
CONFIG_USBDEV=y - USB device support
|
|
CONFIG_USBDEV_COMPOSITE=y - USB composite device support
|
|
CONFIG_COMPOSITE_IAD=y - Interface associate descriptor needed
|
|
|
|
CONFIG_CDCACM=y - USB CDC/ACM serial device support
|
|
CONFIG_CDCACM_COMPOSITE=y - USB CDC/ACM serial composite device support
|
|
|
|
The interface-, string-descriptor- and endpoint-numbers are configured via the
|
|
configuration-structs as noted above. The CDC/ACM serial device needs three
|
|
endpoints; one interrupt-driven and two bulk endpoints.
|
|
|
|
CONFIG_USBMSC=y - USB mass storage device support
|
|
CONFIG_USBMSC_COMPOSITE=y - USB mass storage composite device support
|
|
|
|
Like the configuration for the CDC/ACM, the descriptor- and endpoint-numbers
|
|
are configured via the configuration struct.
|
|
|
|
Depending on the configuration struct you need to configure different vendor-
|
|
and product-IDs. Each VID/PID is unique to a device and thus to a dedicated
|
|
configuration.
|
|
|
|
Linux tries to detect the device types and installs default drivers if the
|
|
VID/PID pair is unknown.
|
|
|
|
Windows insists on a known and installed configuration. With an Atmel
|
|
hardware and Atmel-Studio or the Atmel-USB-drivers installed, you can test
|
|
your configuration with Atmel Example Vendor- and Product-IDs.
|
|
|
|
If you have a USBMSC and a CDC/ACM configured in your combo, then you can try
|
|
to use
|
|
|
|
- VID = 0x03EB (ATMEL)
|
|
- PID = 0x2424 (ASF Example with MSC and CDC)
|
|
|
|
If for example you try to test a configuration with up to seven CDCs, then
|
|
|
|
- VID = 0x03EB (ATMEL)
|
|
- PID = 0x2426 (ASF Example with up to seven CDCs)
|
|
|
|
CONFIG_NSH_BUILTIN_APPS
|
|
This add-on can be built as two NSH "built-in" commands if this option
|
|
is selected: 'conn' will connect the USB composite device; 'disconn'
|
|
will disconnect the USB composite device.
|
|
|
|
Configuration options unique to this add-on:
|
|
|
|
CONFIG_SYSTEM_COMPOSITE_DEBUGMM
|
|
Enables some debug tests to check for memory usage and memory leaks.
|
|
|
|
If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG_FEATURES and CONFIG_DEBUG_USB), then
|
|
the add-on code will also manage the USB trace output. The amount of trace output
|
|
can be controlled using:
|
|
|
|
CONFIG_SYSTEM_COMPOSITE_TRACEINIT
|
|
Show initialization events
|
|
CONFIG_SYSTEM_COMPOSITE_TRACECLASS
|
|
Show class driver events
|
|
CONFIG_SYSTEM_COMPOSITE_TRACETRANSFERS
|
|
Show data transfer events
|
|
CONFIG_SYSTEM_COMPOSITE_TRACECONTROLLER
|
|
Show controller events
|
|
CONFIG_SYSTEM_COMPOSITE_TRACEINTERRUPTS
|
|
Show interrupt-related events.
|