Discussion in "ARM Development" started by    sachinmm    Sep 14, 2015.
Mon Sep 14 2015, 01:20 AM
hello sir,i have a sm20 finger print module and i want to write an application for interfacing sm20 module with lpc2148 but plz tell me how to check my sm20 finger print module is working or not??? i have serial port terminal software..
Mon Sep 14 2015, 08:52 PM
I found this data sheet that seems to cover your model.
As commands are 24 bytes long and not in ASCII you can't do a simple test.
Write a program to send a command string and check the reply.

 sachinmm like this.
Tue Sep 15 2015, 02:26 AM
thanku sir my module is working
Tue Sep 15 2015, 02:27 AM
but there is one issue i used lpc2148 trainer board for interfacing fp..in that pin.0.8 showing 0 voltage and i cant get proper response from fp
Tue Sep 15 2015, 02:31 AM
pin 0.8 and pin 0.9 are used for receive and transmit data for UART1....and i used UART0 for transmitting data and uart1 used for showing response from fp....
Sun Sep 20 2015, 05:12 PM

but there is one issue i used lpc2148 trainer board for interfacing fp..in that pin.0.8 showing 0 voltage and i cant get proper response from fp


Are you still having problems ?
Mon Sep 21 2015, 12:37 AM
yes sir..
Mon Sep 21 2015, 12:39 AM
because FP data is reading by using UART1 and TX AND RX pin of uart1 is connected to pin0.8 & pin0.9 and TX show 0 volt.
Tue Sep 22 2015, 09:04 PM
Can you give a link to the lpc2148 trainer board you are using.

Are you able to program the board to do anything ?
Do you have any demo software that transmits on UART1 ?

Tue Sep 29 2015, 05:31 PM
[Topic moved to ARM Development Forum]

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Wed May 20 2020, 03:59 AM
Does anyone have microcontroller programming software for STC15F104W (core 8051, 4 k, 128 byte, 6 I/O pin, UART ... DIL8), that works?
Sun May 03 2020, 01:08 AM
Tamu Gurung
Hi I am looking for a assembly language program for a digital decimal counter. Time counts max limit of 2 mins starting from 2.00 mins and ending at 0.00. time is to be displayed on 4 7-segment LED displays. Edsim51 simulator to be used. Thanks
Wed Mar 25 2020, 07:09 PM
Sir kindly send the code file i2c for 8051
Sat Mar 14 2020, 04:06 AM
@ Rohitnani,ABEBE..which project ?
Fri Mar 13 2020, 06:25 PM
how can get hadwere of this project
Sat Mar 07 2020, 09:41 PM
Sir, Could you please send me the zip file input password....
Wed Feb 26 2020, 09:28 PM
Peter Parker
Is it possible to send multiple messages using only 1 GSM module?
Sat Feb 01 2020, 02:42 PM
Pearl Olin
Wed Jan 22 2020, 10:46 PM
I m getting errors while simulation process during interfacing socket output and lcd... Can i get the report of ur project which is same as us.
Tue Jan 14 2020, 11:38 AM
shubham kharade
when i am trying to simulate the program in Proteus 8 professional, I am getting some errors as cannot find module file dhtxx.md can u help me



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