GW-ETH-02A
Flash memory
Log data is stored in circular buffer in Flash memory. When it is full and a subsequent write is performed, then it
starts overwriting the oldest data.
There is 252 KB dedicated to IQRF RX data and 128 KB for IQRF TX data and same size for System log.
The number of records of IQRF RX/TX data depends on the parameter
Packet size
, which define how many
payload data bytes is dedicated for every data record. For default setting (
Packet size
= 64 B) there is 3308
positions for IQRF RX and 1680 positions for IQRF TX. For System log there is always 6553 positions in the buffer.
The actual size of the data log is the
Packet size
+ 14 B, where the additional 14 bytes are used for saving date,
time and index of the log. In this way the user can calculate actual number of positions in the buffer.
Data volumes and recording frequency must be taken in account with respect to the Flash memory endurance.
When the
Packet size
is changed in the GW settings, all logs are cleared.
Case
Caution:
It is not allowed to open the GW case otherwise the device may be damaged.
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www.iqrf.org
User_Guide_GW-ETH-02A_ 160208
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