2JCIE-BL01-P1 Environment Sensor (PCB Type) User’s Manual (A280)
6
1.3.3
Flash memory for data recording
The flash memory consists of 2048 pages in total (from Page 0 to Page 2047), and the content of
single page consists of UNIX TIME and 13 rows of measured data. The UNIX TIME indicates the
measurement time at the first row of the page (Row 0), and from the first line onwards, it is possible
to calculate the measurement time by adding the measurement interval to the UNIX TIME. When
data is stored 13 times (from Row 0 to Row 12) in single page, a new page is created for the next
measurement
．
Table 4. Example of Memory contents: Page 1
Items
Contents
Remarks
UNIX TIME
0x5685C180 (1451606400)
2016/1/1 0:00:00
Measurement Interval
0x12C (300sec)
5 min. interval
Row 0
Sensor data
2016/1/1 0:00:00
Row 1
Sensor data
2016/1/1 0:05:00
Row 2
Sensor data
2016/1/1 0:10:00
…
…
…
Row 12
Sensor data
2016/1/1 1:00:00
Table 5. Example of Memory contents: Page 2
Items
Contents
Remarks
UNIX TIME
0x5685D0BC (1451610300)
2016/1/1 1:05:00
Measurement Interval
0x12C (300sec)
5 min. interval
Row 0
Sensor data
2016/1/1 1:05:00
Row 1
Sensor data
2016/1/1 1:10:00
…
…
…
