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BH1721FVC
● Measurement sequence example from "Write instruction" to "Read measurement result"
ex1) Continuously Auto-resolution mode
Technical Note
from Master to Slave
① Send "Continuously Auto-resolution mode " instruction
from Slave to Master
ST
0100011
0
Ack
00010000
Ack
SP
② Wait to complete 1st
Auto-resolution mode measurement.( max. 180ms )
③ Read measurement result.
ST
0100011
1
Ack
High Byte [ 15:8 ]
Ack
Low Byte [ 7:0 ]
Ack
SP
+ 2 9 + 2 8 + 2 7 + 2 4 ) / 1.2 ≒ 28067 [ lx ]
(2
How to calculate when the data High Byte is "10000011" and Low Byte is "10010000"
15
The result of continuously measurement mode is updated.
ex2) Continuously L-resolution mode
① Send " Continuously L-resolution mode " instruction
ST
0100011
0
Ack
00010011
Ack
SP
② Wait to complete L-resolution mode measurement.( max. 24ms )
③ Read measurement result
ST
0100011
1
Ack
High Byte [ 15:8 ]
Ack
Low Byte [ 7:0 ]
Ack
SP
( 2 + 2 ) / 1.2 ≒ 227 [ lx ]
How to calculate when the data High Byte is "00000001" and Low Byte is "00010000"
8 4
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7/15
2011.11 - Rev.B
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