📄 usbs-serial-config.html
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>Configuration</H1
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>Configuration -- Configuration USB Serial like Peripherals</DIV
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>Configuration</H2
><P
> The package requires a few basic configurations plus
optionally some additional configuration options.
</P
><P
> The driver needs two or three endpoints, depending if ACM
communications or a more generic model is used. This is
configured
with <TT
CLASS="LITERAL"
>CYGDAT_IO_USB_SLAVE_CLASS_TYPE</TT
> which
can take the value <TT
CLASS="LITERAL"
>ACM</TT
>
or <TT
CLASS="LITERAL"
>generic</TT
>.
</P
><P
> The <TT
CLASS="LITERAL"
>CYGDAT_IO_USB_SLAVE_SERIAL_EP0</TT
> must be
configured with the control end point of the USB
device. <TT
CLASS="LITERAL"
>CYGDAT_IO_USB_SLAVE_SERIAL_TX_EP</TT
>
must be configured with the endpoint to be used for
transmission and
<TT
CLASS="LITERAL"
>CYGDAT_IO_USB_SLAVE_SERIAL_RX_EP</TT
> must be
configured with the end point used for reception. Associated
with these
are <TT
CLASS="LITERAL"
>CYGNUM_IO_USB_SLAVE_SERIAL_RX_EP_NUM</TT
>
and <TT
CLASS="LITERAL"
>CYGNUM_IO_USB_SLAVE_SERIAL_TX_EP_NUM</TT
>
which are the endpoint numbers and are used during enumeration
of the device. The TX and RX endpoints must operate in BULK
mode.
</P
><P
> If operation mode ACM is selected a third endpoint is
needed. This must operate in interrupt mode and should be
configured
in <TT
CLASS="LITERAL"
>CYGNUM_IO_USB_SLAVE_SERIAL_INTR_EP</TT
>
and <TT
CLASS="LITERAL"
> CYGNUM_IO_USB_SLAVE_SERIAL_INTR_EP_NUM</TT
>.
</P
><P
> The USB serial device will make its vendor:product ID known to
the host. This should be configured
with <TT
CLASS="LITERAL"
>CYGNUM_IO_USB_SLAVE_SERIAL_VENDOR_ID</TT
>
and <TT
CLASS="LITERAL"
>CYGNUM_IO_USB_SLAVE_SERIAL_PRODUCT_ID</TT
>. NOTE:
The default configurations are not valid for products, but
should work for testing.
</P
><P
> The USB enumeration also contains text strings to describe the
device. This text string can be set
with <TT
CLASS="LITERAL"
>CYGDAT_IO_USB_SLAVE_SERIAL_PRODUCT_STR</TT
>.
</P
><P
> The last configuration option of interest
is <TT
CLASS="LITERAL"
>CYGPKG_IO_USB_SLAVE_SERIAL_EXAMPLES</TT
>. When
true example programs will be built when the eCos tests are
built. These are not pass/fail test like other eCos tests, but
examples of how the eCos USB serial class can be used.
</P
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