Wavecom W-RCI (Remote Control) V8.7.0 - Manual (Page 13)

XML SDK V8.7.0 Remote Control Interface Data messages
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5
Data messages
Main data message tag
Content
Data element
Content
The content is a choice between one or more of the Binary, Text, Graphic and Result elements.
Binary data messages
Binary element
Content
Attribute List
encoding
Indicates how the content is encoded. This attribute is required and may assume the values “base2”,
“base16”, “base64” or “base64-mime”. The difference between “base64” and “base64-mime” is the way
the encoded string is terminated. Both encodings use the same character set, but “base64-mime” follows
the specification for SMTP messages and aligns the string to four characters and fills unused positions with
the padding character “=”, whereas “base64” reduces the number of characters to just the ones required,
depending on the bit count.
bit-count
Indicates the number of bits transferred excluding trailing zeros which are appended to achieve byte
boundary alignment. This attribute is required and is a string representing a positive integer.
Content
The content is a string of data decoded by the decoder and encoded as described by the encoding attrib-
ute.
The IAS (ISO-ASYNCHRONOUS and SYNCHRONOUS modes) Bit Stream Output sends a raw, synchronized
bit stream (FSK, some PSK only) to an external application. Before data can be transferred, the parame-
ters of the decoder software (e.g. demodulator, shift frequency, center frequency etc.) must be set to cor-
rect values.
In case of “base2” encoding, a “FALSE” bit is encoded as character ‘0’, “TRUE” as character ‘1’.
In case of “base16” encoding, 4 bits are encoded by their respective hexadecimal character, i.e., ‘0’ to ‘F’.
In case of “base64(-mime)” encoding, 6 bits are represented by a single character of the base64-code.