User guide

NeoFox Communication Interfaces
4 013-20000-010-04-201211
Addr Type Name Description
0 uchar Stx Start of transmission character. Set to 0x03.
1 uchar PacketType Set to 0xC8
2 ushort FrameSize Set to 20 (0x14).
4 ulong CmdNumber Reserved. Set to 0.
8 ulong ParamType Type code for the parameter that is to be set.
12 n/a ParamValue Value for the parameter to be set. Can be a float or integer type.
16 uchar Reserved1 Reserved. Set to 0.
17 uchar Reserved2 Reserved. Set to 0.
18 uchar Checksum Set to the aggregate sum of all previous bytes modulus 256.
19 uchar Eof End of transmission character. Set to 0x04.
Reading Data from the NeoFox
The NeoFox streams a “data dump” of all its publicly exposed parameters after each sample. This occurs
approximately once every tenth of a second. The location of each particular value within this stream is given in
the table at the end of this document. The data stream is structured as follows.
Addr Type Name Description
0 uchar Stx Start of transmission character. Set to 0x03.
1 uchar PacketType Set to 0xDC
2 ushort FrameSize Set to 5036 (0x13AC)
4 uchar FrameCount Number of frames uploaded since the device powered on. This
rolls over after 255. It can be used to determine whether any
frames have been missed.
5 uchar ProtocolRev The value of the Data Copy Type parameter. The structure is a
"type 1" structure (the default communication structure for
NeoFox). Therefore, this value will be 0x01. See Data Copy Type
for more information on alternative data structures.
6 uchar Reserved1 Reserved. Do not depend on this value.
7 uchar Reserved2 Reserved. Do not depend on this value.
8
…
927
n/a Data Parameters are stored in this region of the structure. See the table
at the end of this document for variable-specific documentation
and addresses.
928
…
2979
struct SensorBlue Blue sensor waveform raw data. This contains the data that can
be seen in the “sensor waveform window” in the NeoFox Viewer.
2980 struct SensorRed Red sensor waveform raw data. This contains the data that can