212
Studio
Camera
Control
Protocol
Padding (uint8)
Messages must be padded up to a 32 bit boundary with 0x0 bytes. Any padding
bytes are NOT included in the command length.
Receiving
devices
should
use
the
destination
device
address
and/or
the
command
identifier
to
determine
which
messages
to
process.
The
receiver
should
use
the
command
length
to
skip
irrelevant
or
unknown
commands
and
should
be
careful
to
skip
the
implicit
padding
as
well.
Defined
Commands
Command 0: change configuration
Category (uint8)
The category number specifies one of up to 256 configuration categories
available on the device.
Parameter (uint8)
The parameter number specifies one of 256 potential configuration parameters
available on the device. Parameters 0 through 127 are device specific
parameters. Parameters 128 though 255 are reserved for parameters that apply
to multiple types of devices.
Data type (uint8)
The data type specifies the type of the remaining data. The packet length is
used to determine the number of elements in the message. Each message must
contain an integral number of data elements.
Currently defined values are:
0: void / boolean
A void value is represented as a boolean array of length zero.
The data field is a 8 bit value with 0 meaning false and all other values
meaning true.
1: signed byte
Data elements are signed bytes
2: signed 16 bit integer
Data elements are signed 16 bit values
3: signed 32 bit integer
Data elements are signed 32 bit values
4: signed 64 bit integer
Data elements are signed 64 bit values
5: UTF-8 string
Data elements represent a UTF-8 string with no terminating character.
Data types 6 through 127 are reserved.
128: signed 5.11 fixed point
Data elements are signed 16 bit integers representing a real number with 5 bits
for the integer component and 11 bits for the fractional component.
The fixed point representation is equal to the real value multiplied by 2^11.
The representable range is from -16.0 to 15.9995 (15 + 2047/2048).
Data types 129 through 255 are available for device specific purposes.
Operation type (uint8)
The operation type specifies what action to perform on the specified parameter.
Currently defined values are:
Summary of Contents for Design 3G-SDI Arduino Shield
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