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UART Fingerprint Sensor (C)
V1.0
10
/
18
Byte
1
2
3
4
5
6
7
8
ACK
0xF5 0x23 Hi(Len)
Low(Len)
ACK_SUCCUSS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
2
)
Data packet
Byte
1
2
3
4
5---Len+1
Len+2 Len+3
ACK
0xF5
0
0
0
Eigenvalues
CHK
0xF5
Notes
:
Length of Eigenvalues (Len -3) is 193 bytes.
16.
Download eigenvalues and compare with fingerprint acquired
(
CMD >8 Byte/ACK=8 Byte
)
CMD Format
:
1
)
Data head
:
Byte
1
2
3
4
5
6
7
8
CMD
0xF5
0x44
Hi(Len)
Low(Len)
0
0
CHK
0xF5
2
)
Data packet
Byte
1
2
3
4
5---Len+1
Len+2 Len+3
ACK
0xF5
0
0
0
Eigenvalues
CHK
0xF5
Notes
:
Length of Eigenvalues (Len -3) is 193 bytes.
ACK Format
:
Byte
1
2
3
4
5
6
7
8
ACK
0xF5
0x44
0
0
ACK_SUCCUSS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
17.
Download eigenvalues and comparison 1:1
(
CMD >8 Byte/ACK=8 Byte
)
CMD Format
:
1
)
Data head
:
Byte
1
2
3
4
5
6
7
8
CMD
0xF5
0x42
Hi(Len)
Low(Len)
0
0
CHK
0xF5
2
)
Data packet
Byte
1
2
3
4
5---Len+1
Len+2 Len+2
ACK
0xF5
User ID
(High 8 Bit)
User ID
(Low 8 Bit)
0
Eigenvalues
CHK
0xF5
Notes
:
Length of Eigenvalues (Len -3) is 193 bytes.
ACK Format
:
Byte
1
2
3
4
5
6
7
8
ACK
0xF5
0x43
0
0
ACK_SUCCUSS
ACK_FAIL
0
CHK
0xF5
18.
Download eigenvalues and comparison 1:N
(
CMD >8 Byte/ACK=8 Byte
)
CMD Format
:
1
)
Data head
:
Byte
1
2
3
4
5
6
7
8
CMD
0xF5
0x43
Hi(Len)
Low(Len)
0
0
CHK
0xF5