Forum Replies Created
-
AuthorPosts
-
praveenkumar.vParticipant
Hi friends,
Kindly help me on this I have bought bluetooth hc 05 module.suggest me an android app so that I can test my device with that app were I can recieve the data from app…
praveenkumar.vParticipantHi friend
Buf id refers to 1 or 2 it depends on us where we generate the character file for the finger image.
Start page refers to the starting id where id starts from 0 hence it should be given as 0x00 0x00.
Page num refers to the starting page normally starts from 1. And single page consist of four template and there are 16 pages totally available.
But i’m not sure the definition for start page and the page num are correct it’s our assumption while working with our project and the search command provides the acknowledgement and returns the matched id.
praveenkumar.vParticipantHi friend
Try to use serial interrupt for recieving the acknowledgement.
For that u have to initialize as ES=1 in ur UART function.
And provide 3Sec delay for recieving acknowledgement.
And then we are also facing problems on working with search command while google it we find that data sheet itself having some error in that they said that higher and lower byte for the search commands are interchanged and then by trail and error method the search command executed succesfully.
The arguments for the search command is
unsigned char search_template[] =
{0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x08,0x04,0x01,0x00,0x00,0x01,0x00,0x00,0x0f}
0X01
0X00 0X08
0X04
0X01
0X00 0X00
0X00 0X01
check sum 0X00 0X0f
while passing the arguments to the module higher byte and lower byte should be iterchanged and for check sum calculation the lower byte will be added to its respective lower byte.
i hope this might help you.
praveenkumar.vParticipantHi friend
Can you explain for what sort of application u are working with fingerprint.
The first thing you have to check whether his parameters such storing,searching of the finger image are fine.
For that you can use SFG demo software where u can load and install it in ur pc,and then u have to connect ur finger print module to the pc with the help of max232 and RS232 to USB converter but in our case we have programmer that is having max232 and we have usb connector to connect with pc,from that first u check ur module working well and then go for coding with the controller.
praveenkumar.vParticipantHi
if you send AT to the gsm modem.The modem will acknowledge the controller as anyone like AT OK or AT ERROR.you can use string compare function to check the acknowledgement or u can makes use of lcd display to display the acknowledgement send by the modem to thecontroller
-
AuthorPosts