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This parameter control module with the host computer via the communication baud rate UART communication, if the parameter value of N (N ranges from around 1 to
12) corresponding to the baud rate (9600
N) bps.
4.3.2
Security Level (parameters NO: 5)
The parameter control fingerprint matching and search than threshold, divided into five, range: 1, 2, 3, 4, 5.
The level of security as 1:00 False acceptance rate highest, refused to recognize the lowest rate.
The level of security for the lowest False Accept Rate, refused to recognize the highest rate of 5:00.
4.3.3
package content length (parameter ID: 6)
The maximum length, the range of the parameter control module and PC communication, allowed the transfer of the contents of the data package to:
0, 1, 2, 3, corresponds to the length (number of bytes): 32, 64, 128, 256.
4.4
System Status Register
The system status register module current work status. Can be read through the instruction ReadSysPara instruction length 1Word.
And that are defined as follows:
Bit number15
4
3
2
1
0
Significance
Reserved
ImgBufStat
PWD Pass
Busy
Note:
Busy: accounting for a set to 1 indicates that the system is running the command, 0 indicates that the system is idle;
Pass: representing a set of fingerprint verification;
PWD: accounting for a handshake password set to indicate that the device is authenticated;
ImgBufStat: representing a set fingerprint image buffer to the existence of an effective fingerprint image.
4.5
module password
Module power-on reset, it will be the first inspect the equipment handshake password is modified.
If you do not be modified, the module that the host computer did not
Verify passwords demand, directly into the normal working state; modules password can not verify the password, the default password. Password
Is 4 bytes, the factory default password is: 0x00000000.
If the module internal password has been modified (see set password the instructions SetPwd), you must first verify the device handshake
Password, the password through module before entering the normal working condition. Otherwise, the module refuses to execute any command.
Modified the password, the new password is saved in Flash, power outages still save.
See verify the password VfyPwd instructions and set a password SetPwd instruction.
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Hangzhou refers Security Technology Co., Ltd.
4.6
module address
Each module has an identification address module to communicate with the host computer, each instruction / data in the form of data packets pass
Send each packet contains an address contains the address entry. Module only instruction with the same address with its own address several
According to packet react.
The module address is 4 bytes, the default factory default value: 0xFFFFFFFF. The user module can be modified by instruction address (see
See set the module address command SetAdder). The modified module address, the new address in the power of the module is still preserved.
4.7
random number generator.
Module integrated within the 32-bit hardware random number generator (random number seed is not required), users can command module to
Generates a random number and upload, to see sampling random number instruction GetRandomCode.
