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Guest
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why japanese char? |
Posted: Mon Apr 20, 2009 2:55 am |
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Hai!! All. I have 2 problems
First my LCD display Japanese character. Second, My code stuck on LCD display Card Invalid when I move a card. Suppose LCd show CardNot Detected.
This is my code:
Code: | #include<16f877A.h>
#fuses HS,NOWDT,NOPROTECT,NOBROWNOUT,NOLVP
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,ERRORS)
#include<flex_lcd.c>
#define cardSta PIN_B5
#define LED1 PIN_B4
#define LED2 PIN_B3
char SelectCard[4] = {0xBA,0x02,0x01,0xB9};
int8 ctr;
char rbuff[10];
void main() {
lcd_init();
lcd_putc("\fhai!!");
delay_ms(3000);
while(1){
//****************************************************************************
if(input(cardSta)==0) {
lcd_putc("\fcard detected\ntry");
output_high(LED1);
delay_ms(500);
output_low(LED1);
delay_ms(500);
for (ctr=0;ctr<4;ctr++) putc(SelectCard[ctr]); //send command SelectCard
if(kbhit())
for (ctr=0;ctr<10;ctr++) rbuff[ctr]=getc(); //receive 10 response bytes
lcd_putc("\f");
for (ctr=0;ctr<10;ctr++)
lcd_putc(rbuff[ctr]);
delay_ms(10000);
if (rbuff[3]==0 && rbuff[8]==1) {
lcd_putc("\fMifare Card "); // to show that the card accepted
}
else {
lcd_putc("\fCard Invalid");
break;
}
}
else {
lcd_putc("\fcardNotDetected\ntry");
output_high(LED2);
delay_ms(500);
output_low(LED2);
delay_ms(500);
}
}
} |
I seen on forum some user use this:
Quote: | #fuses HSPLL,NOWDT,NOPROTECT,NOLVP,NODEBUG,USBDIV,PLL5,CPUDIV1,VREGEN |
I not understand about PLL5, CPUDIV1, VREGEN. Is it need for my code?
Suppose I receive 10 bytes respond, not a japanese character
Help pls. |
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PCM programmer
Joined: 06 Sep 2003 Posts: 21708
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Posted: Mon Apr 20, 2009 11:47 am |
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Post the manufacturer and part number of your LCD and your card
reader. Also post a list of the connections between the PIC and those
two devices. |
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ckielstra
Joined: 18 Mar 2004 Posts: 3680 Location: The Netherlands
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Posted: Mon Apr 20, 2009 3:03 pm |
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Code: | for (ctr=0;ctr<4;ctr++) putc(SelectCard[ctr]); //send command SelectCard
if(kbhit())
for (ctr=0;ctr<10;ctr++) rbuff[ctr]=getc(); //receive 10 response bytes
lcd_putc("\f"); | I'm not sure what you want to do here, but it is not going to work.
There is no ';' or '{' after the kbhit line which means that your code is equivalent to: Code: | for (ctr=0;ctr<4;ctr++) putc(SelectCard[ctr]); //send command SelectCard
if(kbhit())
{
for (ctr=0;ctr<10;ctr++) rbuff[ctr]=getc(); //receive 10 response bytes
}
lcd_putc("\f"); | The card reader must respond within a few microseconds or the kbhit test will fail and the 10 respond bytes will never be received. The baudrate is 9600 baud, or about 1ms for a byte so it is impossible to ever meet this quick response time.
Solve by removing the kbhit test, it is not needed. |
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Guest
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Posted: Wed Apr 29, 2009 1:06 am |
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I try to display this 0xBA,0x02,0x01,0xB9 four byte number to my lcd but the lcd display four character like this @#$%. The four byte number that I want to display came from char SelectCard[4] = {0xBA,0x02,0x01,0xB9}; in my code.
I'm using 16*2 lcd and compiler version 3.214
Plz help. This is my code:
Code: | #include<16f877A.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=20000000)
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=8,ERRORS)
#include<flex_lcd.c>
#define cardSta PIN_B5
#define LED1 PIN_B4
#define LED2 PIN_B3
char SelectCard[4] = {0xBA,0x02,0x01,0xB9};
int8 ctr;
void main() {
lcd_init();
lcd_putc("\fhai!!");
delay_ms(3000);
while(1){
if(input(cardSta)==0) {
lcd_putc("\fcard detected");
delay_ms(500);
lcd_putc("\f");
for (ctr=0;ctr<4;ctr++){
lcd_putc(SelectCard[ctr]);
delay_ms(1000);
}
}
else {
lcd_putc("\fcardNotDetected");
output_high(LED2);
delay_ms(500);
output_low(LED2);
delay_ms(500);
}
}
} |
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Guest
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Posted: Wed Apr 29, 2009 3:52 am |
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I just got the solution. Only use command printf(lcd_putc,"%X",SelectCard[crt]); to replace lcd_putc(SelectCard[ctr]); |
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