User Manual

Software Design
ZSTAR3 Reference Design Manual, Rev. 0.1
5-36 Freescale Semiconductor
Preliminary
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5.3.4.1 ZSTAR3_PYLON
This is main and practically single command of USB Stick. Command is used as a net synchronization
message and it’s one way how to get data and other sub commands to individual sensor boards. This
command is replinish in protocol with mode of operation information (8/16 bits communication).
Figure 5-2. ZSTAR3_PYLON Zdata format
5.3.4.2 ZSTAR3_DATA
With this command sensors sensding measured data into USB Stick. This most frequently sensor board RF
command.
5.3.4.3 ZSTAR3_ACK
This command is sensor using to acknowledge success received USB Stick subcommand.
5.3.4.4 ZSTAR3_CONNECT
By this command sensor board sends calibration data to USB Stick. Command is also using to starts
communication between Sensor board and USB stick.
5.3.4.5 ZSTAR3_ION
This command is specially designed to answer all special requirements of digital sensor device
1
.
5.3.5 ZSTAR3 Protocol SubCommands Description
The group of subcommands relates to main USb Stick RF ZSTAR3_PYLON command. All these
subcommands can be send only as axtension of ZSTAR3_PYLON. Subcommands are way how to get data
and majority commands from USb Stick to individual sensors.
5.3.5.1 ZSTAR3_GUI
This commnad is designed only to clearing timeout
2
in sensor and thus keep sensor in run mode.Sensor
board answer by ZSTAR3_DATA command.
1.ZSTAR3 with assembled MMA7450L - ION.
2.Each sensor Board without power switch has automatically switch off function when overflow 2 minutes
timeout.
List of active
Data depends on sub commands
01
Zdata bytes:
2
sensors
3
4...
Selected
Subcommand
sensor