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Hi Guys,
How do i connect r303 with 89v51rd2. And how can i code 8051(89v51rd2) so that they can scan the image.
Will i be able to connect TX of r303 directily to P3.1 port and communicate the commands of scan and receive to r303(bio-metric sensor)
This is the Code To read finger print(but its not scanning can anyone suggest me the fault)
#incude<reg51.h>sfr ldata=0x90;sbit rs=P2^3;sbit rw=P2^4;sbit en=P2^5;sbit busy=P1^7;char uart_data;//This Function is to add delay into programvoid delay(unsigned int value){unsigned int i,j;for(i=0;i<value;i++)for(j=0;j<1275;j++) ;}//This funciton is to check if the lcd is ready to take commandsvoid lcd_ready(){busy=1;rs=0;rw=1;while (busy==1){en=0;delay(1);en=1;}return;}//This id to print a byte onto screenvoid lcd_data (unsigned char value){lcd_ready();ldata=value;rs=1;rw=0;en=1;delay(1);en=0;return;}unsigned char asc1,asc2;//This is to convert the decimal to ASCIIvoid conv(unsigned char adc1){unsigned char d1,d2;d1=adc1%10;d2=adc1/10;asc1=d1 | 0x30;asc2=d2 | 0x30;}//This is to print the ascii value onto screenvoid finger_data(unsigned char i){if(RI==1){RI=0;uart_data=SBUF;SBUF=uart_data;conv(uart_data);lcd_data(asc2);lcd_data(asc1);}else RI=0;}//This is to send a bytes of data to sensorvoid UART_SendByte(unsigned char GenImg[],unsigned char dt){int i;for(i=0;i<dt;i++){TI=0;SBUF = GenImg;while(TI==0);TI=0;}}//This is to get the conformation code from the sensorunsigned char UART_GetByte(){int i;for(i=0;i<10;i++){RI=0;while(RI==0);RI=0;}return SBUF;}//This is to send commands to lcdvoid lcdcmd (unsigned char value){lcd_ready();ldata=value;rs=0;rw=0;en=1;delay(1);en=0;return;}//This Function initializes UART Codevoid UART_Init(){SCON = 0x50; /* uart in mode 1 (8 bit), REN=1 */TMOD = TMOD | 0x20 ; /* Timer 1 in mode 2 */TH1 = 0xFD; /* 9600 Bds at 11.059MHz */TL1 = 0xFD; /* 9600 Bds at 11.059MHz */ES = 1; /* Enable serial interrupt */EA = 1; /* Enable global interrupt */TR1 = 1; /* Timer 1 run */}void lcd_display(char d[]){int i;for(i=0;i<strlen(d);i++)lcd_data(d);}//This Function is to read finger from sensorvoid read_fin(){unsigned char GenImg[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x03,0x01,0x00,0x05};unsigned char Ack,val;l1:lcdcmd(0x01);lcdcmd(0x86);lcd_display(“Welcome”);delay(500);lcdcmd(0x01);lcdcmd(0x86);lcd_display(“Place Finger”);delay(500);UART_Init();UART_SendByte(GenImg,12);Ack=UART_GetByte();finger_data(val);delay(1500);lcdcmd(0x01);lcdcmd(0x86);if(Ack==0x00) lcd_display(“Finger Success”);else{lcd_display(“Error or Fault occured”);goto l1;}}Hi,
first check with LCD…
Is it working fine??
Why you are using busy flag method ? before using busy flag, you have not put RW=1…!!
Go for simple method for LCD..!!
All the best…!!
Thanks Shah Dishant h.
But,I tried deleted all lcd commands and tried to send adding vrypwd(verify password) code at beggining of the program but the module did not work.
I actually connected TX And RX of R303 to TTL 232 and then Connected 2,3,5 of serial to 3,2,5 of 8051 module but it seems that it didn’t work out. Can u help me out with that.
Hi,
In your system, you have 2 modules…
1. LCD
2. Serial Communication
First try to program it individually and then combine it…!!
Hey I am Trying To code for Searching.
But what is the startPage and End Page.
And how to calculate the Check Sum For That its should be 2 byte.
so how to calculate a two byte check sum.#include<reg51.h>
#include<string.h>unsigned char Ack[28];
unsigned char TemplateNum[2];//It is Two Bytes of data
unsigned char statReg,sysIDcode,FingLibSize,securityLvl,DeviceAddr[2],DataPckSize,baudRate;
void rx(unsigned int num)
{
i=0;
while(RI && i<num)
{
Ack[i++]=SBUF;
RI=0;
}
Ack=’ ’;
}
void tx1(unsigned char y)
{
SBUF=y;
while(TI==0);
TI=0;
}
void delay(unsigned int x)
{
unsigned int i,j;
for(i=0;i<x;i++)
for(j=0;j<1000;j++);
}void scan_fin()
{
unsigned char i,j;
unsigned char VryPwd[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x07,0x13,0xFF,0xFF,0xFF,0xFF,0x04,0x17};
unsigned char ReadSysPara[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x03,0x0F,0x00,0x13};
unsigned char ReadTemplateNum[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x03,0x1D,0x00,0x21};
unsigned char GenImg[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x03,0x01,0x00,0x05};
unsigned char Img2T[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x04,0x02,0x01,0x08};
unsigned char search[17]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x08,0x04};
unsigned char MatchScore[2],pageID[2];
//This is to verify the password of Bio-Metric
do
{
for(i=0;k<strlen(VryPwd);i++)
tx1(VryPwd);
delay(1000);
rx(16);
}while(Ack[9]!=0x00);
//This is to retice the system parameters of Bio-Metric
do
{
for(i=0;i<strlen(ReadSysPara);i++)
tx1(ReadSysPara);
delay(1000);
rx(28);
}while(Ack[9]!=0x00);
statReg=Ack[10];
sysIDcode=Ack[11];
FingLibSize=Ack[12];
securityLvl=Ack[13];
DeviceAddr[0]=Ack[14];
DeviceAddr[1]=Ack[15];
DataPckSize=Ack[16];
baudRate=Ack[17];
//This is to retrive the Template Number from Bio-Metric
do
{
for (int i = 0; i < strlen(Syspara); ++i)
tx1(ReadTemplateNum);
delay(1000);
rx1(14);
}while(Ack[9]!=0x00);
TemplateNum[0]=Ack[10];
TemplateNum[1]=Ack[11];
//This is to Scan Finger and Place it in imageBuffer
do
{
for (int i = 0; i < strlen(GenImg); ++i)
tx1(GenImg);
delay(1500);
rx1(12);
}while(Ack[9]!=0x00);
//This is to Convert the Image in ImageBuffer to charBuffer
do
{
for (int i = 0; i < strlen(Img2Tz); ++i)
tx1(Img2Tz);
delay(1000);
rx(12);
}while(Ack[9]!=0x00);
//This is to compare the CharBuffer and The Values stored
search[10]=0x01; //This is for BufferID
search[11]=0x00; //This is for StartPage Byte 1
search[12]=0x00; //This is for StartPage Byte 2
search[13]=TemplateNum[0]; //This is for Pagenumber byte 1
search[14]=TemplateNum[1]; //This is for PageNumber byte 2
//This below Two Bytes are for Check Sum
search[15]=
search[16]=
do
{
for (int i = 0; i < strlen(search); ++i)
tx1(search);
delay(1000);
rx(16);
} while (Ack[9]!=0x00);
pageID[0]=Ack[10];
pageID[1]=Ack[11];
MatchScore[0]=Ack[12];
MatchScore[1]=Ack[13];
//Note is Page ID Same as Template ID
}
void main()
{
void scan_fin();
}any one tell me how to calculate 2 byte check sum of hexa value….
Is there any fault in this program….
i am not getting the output…. Except the check sum part…
Hi 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.
Hi
thanks for you reply,
1)The sfg module is working with pc.i.e, when i connect it to pc i am able to add,search,all operations are working.
But when i interface it with 8051(p89v51rd2) the commands i send dont work.
2)I am interfacing bio-metric with 8051 and sending the ID i receive from sensor to a receiver module
and using that id i am giving the attendance…
Hi 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.
yes thanks for the help,
please can u explain me how you took the start and end address in the search array(i.e, 11th to 17th positions of array)
actually i didn’t understand that part in the manual…Hi 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.
I'm also do my project by fingerprint access. i read your post i got some imformation and understand little bit how the module work but i have confusion in command such
unsigned char VryPwd[]={0xEF,0x01,0xFF,0xFF,0xFF,0xFF,0x01,0x00,0x07,0x13,0xFF,0xFF,0xFF,0xFF,0x04,0x17};
can you explain me each charector
R303a is working with its own protocol.
You have to read datasheet for that carefully.
When communicate with 8051, the controller has to send a command packet to the R303a fingerprint module.
After receiving command from the controller, the module send acknowledge command to the controller.
VryPwd[] is a command sent by controller to the module.
First two bytes are header, next four are address, next one is for package identifier, next two are for package length, next one is for instruction code, next for are for password of module, and last two are checksum.
Again I say that read the datasheet carefully.
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