USER REQUESTS

first << previous | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 next >> last

posted on 2016/03/04 09:36:46 AM CET

rfid displaying weird characters

hi, am doing final year project on rfid access control. i have this code that i wrote but it keeps displaying weird characters on my lcd. please i need help. Thanks. I use PIC 18F45K22

// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;

sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections

char i,rfid[13] ;

char rfid2[] = "0123456789123" ;
int count = 0;
void main()
{

ANSELB = 0;
ANSELD = 0;
ANSELC = 0;

Lcd_Init(); // Initialize LCD
Lcd_Cmd(_LCD_CLEAR); // Clear display
Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
//Lcd_Out(1,1,"RFID Tag Reader"); // Write text in first row

UART2_Init(9600);

rfid[12] = '\0';

while(1)
{

if(UART2_Data_Ready())
{
for(i=0;i<12;)
{
if(UART2_Data_Ready())
{
rfid[i] = UART2_Read();
i++;
}

}

Lcd_Out(1,1,rfid);

if(!strcmp(rfid,rfid2)){
Lcd_Out(2,1,"ACCESS GRANTED");
delay_ms(1000);
Lcd_Cmd(_LCD_CLEAR);
//Lcd_Out(1,1,"RFID Tag Reader");
}
else {
Lcd_Out(2,1, "ACCESS DENIED");
delay_ms(1000);
Lcd_Cmd(_LCD_CLEAR);
//Lcd_Out(1,1,"RFID Tag Reader");
}

}
}
}