LCD yi A portundan sürmek istiyorum

[piedos]

LCD.C dosyası icindeki

LCD yi A portundan sürmek istiyorum

struct lcd_pin_map {                 // This structure is overlayed
           BOOLEAN enable;           // on to an I/O port to gain
           BOOLEAN rs;               // access to the LCD pins.
           BOOLEAN rw;               // The bits are allocated from
           BOOLEAN unused;           // low order up.  ENABLE will
           int     data : 4;         // be pin B0.
        } lcd;


#if defined(__PCH__)
#if defined use_portb_lcd
   #byte lcd = 0xF81                   // This puts the entire structure
#else
   #byte lcd = 0xF83                   // This puts the entire structure
#endif
#else
#if defined use_portb_lcd
   #byte lcd = 6                  // on to port B (at address 6)
#else
   #byte lcd = 8                 // on to port D (at address 8)
#endif
#endif

#if defined use_portb_lcd
   #define set_tris_lcd(x) set_tris_b(x)
#else
   #define set_tris_lcd(x) set_tris_d(x)
#endif


#define lcd_type 2           // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40    // LCD RAM address for the second line

bölümünü aşağıdaki gibi değiştirdim (16F628 için)

struct lcd_pin_map {                 // This structure is overlayed
           BOOLEAN enable;           // on to an I/O port to gain
           BOOLEAN rs;               // access to the LCD pins.
           BOOLEAN rw;               // The bits are allocated from
           BOOLEAN unused;           // low order up.  ENABLE will
           int     data : 4;         // be pin B0.
        } lcd;

 
 
   #byte lcd = 5  // A portunun adresi               // on to port B (at address 6)
 

 
   #define set_tris_lcd(x) set_tris_a(x)   //A portu ayarlandı
 

#define lcd_type 2           // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40    // LCD RAM address for the second line

bölümünü aşağıdaki gibi değiştirdim (16F877 için)

struct lcd_pin_map {
           int     data : 4;                 // This structure is overlayed
           BOOLEAN enable;           // on to an I/O port to gain
           BOOLEAN rs;               // access to the LCD pins.
           BOOLEAN rw;               // The bits are allocated from
           BOOLEAN unused;           // low order up.  ENABLE will
           //int     data : 4;         // be pin B0.
        } lcd;

 
 
   #byte lcd = 5  // A portunun adresi               // on to port B (at address 6)
 

 
   #define set_tris_lcd(x) set_tris_a(x)   //A portu ayarlandı
 

#define lcd_type 2           // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40    // LCD RAM address for the second line

ama LCD yi aynen  PORTB ye bağladığım gibi PORTAya bağladım 16F628A

ve 16F877A da isis simulasyonları çalışmıyor

Aynı şekilde 16F877A da PORTC ve PORTD ayarlanırsa LCD çalışıyor

başlangıca
setup_adc_ports( NO_ANALOGS );
da yazdım ama fayda etmedi
PORTB interrupt için lazım 16F628le bu işi nasıl çözerim?

NOT 16F628A da INT_RC_IO ve NOMCLR bayraklarını da kurdum ama sorun çözülmüyor

Hi-tech de ds1302 için kaynak kodu bulsaydım CCSle yapmazdım bu işi

[altinguray]

16f877 icin birebir yapman mumkun değil ccs'nin b portunda verdigin ornek icin 8 bitlik portu b3 (unused denen yer)haric toplam  7 bitlik bir veri tasiman gerekir (rs,rw,e ve data 4 bit) 877'de a portu 6 bit oldugundan bir bit zaten eksik kaliyor illakide a portundan yapayim dersen rw yi kullanmayip lcd 'de topraga cekersin boylikle 1 bitlik kazanc sayesinde A portuna sigar kaybin sadece lcd ye yazma kismi kalir lcd'den okuma yapamazsin lcd.c orjinal hali ile calismaz incelediginde  
     while ( bit_test(lcd_read_byte(),7) ) ;
boyle bir satir goreceksin bu lcd mesgul mu değil diye sinyal bekler sen bu sekli ile okuma yapamadigindan sistem sonsuz beklemeye girer bu satir yerine
     delay_ms(2);    
gibi bir satir yazar isen okuma beklemek yerine kafadan 2 milisaniye bekleyip nasil olsa isi bitmisitir diye diger komutlari kabul edebilecegini farzederek calisma yapabilirsin ben 1 milisaniye de denedim oluyor



16f628 icin ise Ra5 sadece okuma icin ayarlanabiliyor

struct lcd_pin_map {           
           int     data : 4;         
           BOOLEAN enable;           

           BOOLEAN unused;      // kullanilmayan RA5 denk  getirildi    

           BOOLEAN rs;               
           BOOLEAN rw;               
        } lcd;
gibi sirasi ile baglar isen olmasi lazim kontrol amacli bence a portunun tamamen cikis olup olamadigini 
output_high(pin_a0);
output_high(pin_a1);
output_high(pin_a2);
output_high(pin_a3);

output_high(pin_a4);
output_high(pin_a6);
output_high(pin_a7);

komutlarini kullanip pinlerede led baglayip yandiklarindan emin olduktan sonra lcd.c kulanmayi dene .
iyi calismalar
Guray

[respected]

//B PORTU TANIMLI OLARAK ÇALIŞAN DRIVER DOSYASIDIR.

#define LCD_DB4 PIN_B4
#define LCD_DB5 PIN_B5
#define LCD_DB6 PIN_B6
#define LCD_DB7 PIN_B7

#define LCD_E PIN_B3
#define LCD_RS PIN_B2
//#define LCD_RW PIN_B1 // RW UCU KULLANILACAK İSE BU SATIR AÇILMALIDIR


//#define USE_LCD_RW 1 // RW UCU KULLANILACAK İSE BU SATIR AÇILMALIDIR

//========================================

#define lcd_type 2 // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40 // LCD RAM address for the 2nd line


int8 const LCD_INIT_STRING[4] =
{
0x20 | (lcd_type << 2), // Func set: 4-bit, 2 lines, 5x8 dots
0xc, // Display on
1, // Clear display
6 // Increment cursor
};


//-------------------------------------
void lcd_send_nibble(int8 nibble)
{
// Note: !! converts an integer expression
// to a boolean (1 or 0).
output_bit(LCD_DB4, !!(nibble & 1));
output_bit(LCD_DB5, !!(nibble & 2));
output_bit(LCD_DB6, !!(nibble & 4));
output_bit(LCD_DB7, !!(nibble & 8 ));

delay_cycles(1);
output_high(LCD_E);
delay_us(2);
output_low(LCD_E);
}


#ifdef USE_LCD_RW
int8 lcd_read_nibble(void)
{
int8 retval;

#bit retval_0 = retval.0
#bit retval_1 = retval.1
#bit retval_2 = retval.2
#bit retval_3 = retval.3

retval = 0;

output_high(LCD_E);
delay_cycles(1);

retval_0 = input(LCD_DB4);
retval_1 = input(LCD_DB5);
retval_2 = input(LCD_DB6);
retval_3 = input(LCD_DB7);

output_low(LCD_E);

return(retval);
}
#endif



#ifdef USE_LCD_RW
int8 lcd_read_byte(void)
{
int8 low;
int8 high;

output_high(LCD_RW);
delay_cycles(1);

high = lcd_read_nibble();

low = lcd_read_nibble();

return( (high<<4) | low);
}
#endif

//----------------------------------------
// Send a byte to the LCD.
void lcd_send_byte(int8 address, int8 n)
{
output_low(LCD_RS);

#ifdef USE_LCD_RW
while(bit_test(lcd_read_byte(),7)) ;
#else
delay_us(60);
#endif

if(address)
output_high(LCD_RS);
else
output_low(LCD_RS);

delay_cycles(1);

#ifdef USE_LCD_RW
output_low(LCD_RW);
delay_cycles(1);
#endif

output_low(LCD_E);

lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}

//----------------------------
void lcd_init(void)
{
int8 i;

output_low(LCD_RS);

#ifdef USE_LCD_RW
output_low(LCD_RW);
#endif

output_low(LCD_E);

delay_ms(15);

for(i=0 ;i < 3; i++)
{
lcd_send_nibble(0x03);
delay_ms(5);
}

lcd_send_nibble(0x02);

for(i=0; i < sizeof(LCD_INIT_STRING); i++)
{
lcd_send_byte(0, LCD_INIT_STRING[i]);

#ifndef USE_LCD_RW
delay_ms(5);
#endif
}

}

//----------------------------

void lcd_gotoxy(int8 x, int8 y)
{
int8 address;

if(y != 1)
address = lcd_line_two;
else
address=0;

address += x-1;
lcd_send_byte(0, 0x80 | address);
}

//-----------------------------
void lcd_putc(char c)
{
switch(c)
{
case '\f':
lcd_send_byte(0,1);
delay_ms(2);
break;

case '\n':
lcd_gotoxy(1,2);
break;

case '\b':
lcd_send_byte(0,0x10);
break;

default:
lcd_send_byte(1,c);
break;
}
}

//------------------------------
#ifdef USE_LCD_RW
char lcd_getc(int8 x, int8 y)
{
char value;

lcd_gotoxy(x,y);

// Wait until busy flag is low.
while(bit_test(lcd_read_byte(),7));

output_high(LCD_RS);
value = lcd_read_byte();
output_low(lcd_RS);

return(value);
}
#endif

Bu kodları kullanarak istediğin portu tanımlayabilirsin

[respected]

sorun olursa dosyayı gönderebilirim. Kodları buraya gönderirken değişebiliyor.

[oyhan]

Define ile benim tanımladığım b portları çalışıyor dilediğim portuda kullanabiliyorum. LCD.C yerine bu driverı kullanın çok daha esnek dilediğiniz portu kullanabilirsiniz sanırım. kolay gelsin... Bunu driver klasörüne atın lazım olur mutlaka. "flex_lcd.c" LCD_RW    toprağa direk bağladığım için kapattım.

// flex_lcd.c

// These pins are for the Microchip PicDem2-Plus board,
// which is what I used to test the driver.  Change these
// pins to fit your own board.

#define LCD_DB4   PIN_B4
#define LCD_DB5   PIN_B5
#define LCD_DB6   PIN_B6
#define LCD_DB7   PIN_B7

#define LCD_E     PIN_B2
#define LCD_RS    PIN_B3
//#define LCD_RW    0
// If you only want a 6-pin interface to your LCD, then
// connect the R/W pin on the LCD to ground, and comment
// out the following line.

//#define USE_LCD_RW   1

//========================================

#define lcd_type 2        // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40 // LCD RAM address for the 2nd line


int8 const LCD_INIT_STRING[4] =
{
 0x20 | (lcd_type << 2), // Func set: 4-bit, 2 lines, 5x8 dots
 0x0C,//0xf,                    // Display on
 1,                      // Clear display
 6                       // Increment cursor
 };

/*
byte CONST LCD_INIT_STRING[4] = {0x20 | (lcd_type << 2), 0xC, 1,6};

Value   Cursor  Blink
0x0C     Off      Off
0x0D     Off      On
0x0E     On       Off
0x0F     On       On

*/

//-------------------------------------
void lcd_send_nibble(int8 nibble)
{
// Note:  !! converts an integer expression
// to a boolean (1 or 0).
 output_bit(LCD_DB4, !!(nibble & 1));
 output_bit(LCD_DB5, !!(nibble & 2));
 output_bit(LCD_DB6, !!(nibble & 4));
 output_bit(LCD_DB7, !!(nibble & 8));

 delay_cycles(1);
 output_high(LCD_E);
 delay_us(2);
 output_low(LCD_E);
}

//-----------------------------------
// This sub-routine is only called by lcd_read_byte().
// It's not a stand-alone routine.  For example, the
// R/W signal is set high by lcd_read_byte() before
// this routine is called.

#ifdef USE_LCD_RW
int8 lcd_read_nibble(void)
{
int8 retval;
// Create bit variables so that we can easily set
// individual bits in the retval variable.
#bit retval_0 = retval.0
#bit retval_1 = retval.1
#bit retval_2 = retval.2
#bit retval_3 = retval.3

retval = 0;

output_high(LCD_E);
delay_cycles(1);

retval_0 = input(LCD_DB4);
retval_1 = input(LCD_DB5);
retval_2 = input(LCD_DB6);
retval_3 = input(LCD_DB7);

output_low(LCD_E);

return(retval);
}
#endif

//---------------------------------------
// Read a byte from the LCD and return it.

#ifdef USE_LCD_RW
int8 lcd_read_byte(void)
{
int8 low;
int8 high;

output_high(LCD_RW);
delay_cycles(1);

high = lcd_read_nibble();

low = lcd_read_nibble();

return( (high<<4) | low);
}
#endif

//----------------------------------------
// Send a byte to the LCD.
void lcd_send_byte(int8 address, int8 n)
{
output_low(LCD_RS);

#ifdef USE_LCD_RW
while(bit_test(lcd_read_byte(),7)) ;
#else
delay_us(60);
#endif

if(address)
   output_high(LCD_RS);
else
   output_low(LCD_RS);

 delay_cycles(1);

#ifdef USE_LCD_RW
output_low(LCD_RW);
delay_cycles(1);
#endif

output_low(LCD_E);

lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}

//----------------------------


void lcd_setcursor_vb(short visible, short blink) {
  lcd_send_byte(0, 0xC|(visible<<1)|blink);
}


void lcd_init(void)
{
int8 i;

output_low(LCD_RS);

#ifdef USE_LCD_RW
output_low(LCD_RW);
#endif

output_low(LCD_E);

delay_ms(15);

for(i=0 ;i < 3; i++)
   {
    lcd_send_nibble(0x03);
    delay_ms(5);
   }

lcd_send_nibble(0x02);

for(i=0; i < sizeof(LCD_INIT_STRING); i++)
   {
    lcd_send_byte(0, LCD_INIT_STRING[i]);

    // If the R/W signal is not used, then
    // the busy bit can't be polled.  One of
    // the init commands takes longer than
    // the hard-coded delay of 60 us, so in
    // that case, lets just do a 5 ms delay
    // after all four of them.
    #ifndef USE_LCD_RW
    delay_ms(5);
    #endif
   }

}

//----------------------------

void lcd_gotoxy(int8 x, int8 y)
{
int8 address;

if(y != 1)
   address = lcd_line_two;
else
   address=0;

address += x-1;
lcd_send_byte(0, 0x80 | address);
}


//-----------------------------
void lcd_putc(char c)
{
 switch(c)
   {
    case '\f':
      lcd_send_byte(0,1);
      delay_ms(2);
      break;

    case '\n':
       lcd_gotoxy(1,2);
       break;

    case '\b':
       lcd_send_byte(0,0x10);
       break;

    default:
       lcd_send_byte(1,c);
       break;
   }
}

//------------------------------
#ifdef USE_LCD_RW
char lcd_getc(int8 x, int8 y)
{
char value;

lcd_gotoxy(x,y);

// Wait until busy flag is low.
while(bit_test(lcd_read_byte(),7));

output_high(LCD_RS);
value = lcd_read_byte();
output_low(lcd_RS);

return(value);
}
#endif

[X-Fi]

Define ile benim tanımladığım b portları çalışıyor dilediğim portuda kullanabiliyorum. LCD.C yerine bu driverı kullanın çok daha esnek dilediğiniz portu kullanabilirsiniz sanırım. kolay gelsin... Bunu driver klasörüne atın lazım olur mutlaka. "flex_lcd.c" LCD_RW    toprağa direk bağladığım için kapattım.

// flex_lcd.c

// These pins are for the Microchip PicDem2-Plus board,
// which is what I used to test the driver.  Change these
// pins to fit your own board.

#define LCD_DB4   PIN_B4
#define LCD_DB5   PIN_B5
#define LCD_DB6   PIN_B6
#define LCD_DB7   PIN_B7

#define LCD_E     PIN_B2
#define LCD_RS    PIN_B3
//#define LCD_RW    0
// If you only want a 6-pin interface to your LCD, then
// connect the R/W pin on the LCD to ground, and comment
// out the following line.

//#define USE_LCD_RW   1

//========================================

#define lcd_type 2        // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40 // LCD RAM address for the 2nd line


int8 const LCD_INIT_STRING[4] =
{
 0x20 | (lcd_type << 2), // Func set: 4-bit, 2 lines, 5x8 dots
 0x0C,//0xf,                    // Display on
 1,                      // Clear display
 6                       // Increment cursor
 };

/*
byte CONST LCD_INIT_STRING[4] = {0x20 | (lcd_type << 2), 0xC, 1,6};

Value   Cursor  Blink
0x0C     Off      Off
0x0D     Off      On
0x0E     On       Off
0x0F     On       On

*/

//-------------------------------------
void lcd_send_nibble(int8 nibble)
{
// Note:  !! converts an integer expression
// to a boolean (1 or 0).
 output_bit(LCD_DB4, !!(nibble & 1));
 output_bit(LCD_DB5, !!(nibble & 2));
 output_bit(LCD_DB6, !!(nibble & 4));
 output_bit(LCD_DB7, !!(nibble & 8));

 delay_cycles(1);
 output_high(LCD_E);
 delay_us(2);
 output_low(LCD_E);
}

//-----------------------------------
// This sub-routine is only called by lcd_read_byte().
// It's not a stand-alone routine.  For example, the
// R/W signal is set high by lcd_read_byte() before
// this routine is called.

#ifdef USE_LCD_RW
int8 lcd_read_nibble(void)
{
int8 retval;
// Create bit variables so that we can easily set
// individual bits in the retval variable.
#bit retval_0 = retval.0
#bit retval_1 = retval.1
#bit retval_2 = retval.2
#bit retval_3 = retval.3

retval = 0;

output_high(LCD_E);
delay_cycles(1);

retval_0 = input(LCD_DB4);
retval_1 = input(LCD_DB5);
retval_2 = input(LCD_DB6);
retval_3 = input(LCD_DB7);

output_low(LCD_E);

return(retval);
}
#endif

//---------------------------------------
// Read a byte from the LCD and return it.

#ifdef USE_LCD_RW
int8 lcd_read_byte(void)
{
int8 low;
int8 high;

output_high(LCD_RW);
delay_cycles(1);

high = lcd_read_nibble();

low = lcd_read_nibble();

return( (high<<4) | low);
}
#endif

//----------------------------------------
// Send a byte to the LCD.
void lcd_send_byte(int8 address, int8 n)
{
output_low(LCD_RS);

#ifdef USE_LCD_RW
while(bit_test(lcd_read_byte(),7)) ;
#else
delay_us(60);
#endif

if(address)
   output_high(LCD_RS);
else
   output_low(LCD_RS);

 delay_cycles(1);

#ifdef USE_LCD_RW
output_low(LCD_RW);
delay_cycles(1);
#endif

output_low(LCD_E);

lcd_send_nibble(n >> 4);
lcd_send_nibble(n & 0xf);
}

//----------------------------


void lcd_setcursor_vb(short visible, short blink) {
  lcd_send_byte(0, 0xC|(visible<<1)|blink);
}


void lcd_init(void)
{
int8 i;

output_low(LCD_RS);

#ifdef USE_LCD_RW
output_low(LCD_RW);
#endif

output_low(LCD_E);

delay_ms(15);

for(i=0 ;i < 3; i++)
   {
    lcd_send_nibble(0x03);
    delay_ms(5);
   }

lcd_send_nibble(0x02);

for(i=0; i < sizeof(LCD_INIT_STRING); i++)
   {
    lcd_send_byte(0, LCD_INIT_STRING[i]);

    // If the R/W signal is not used, then
    // the busy bit can't be polled.  One of
    // the init commands takes longer than
    // the hard-coded delay of 60 us, so in
    // that case, lets just do a 5 ms delay
    // after all four of them.
    #ifndef USE_LCD_RW
    delay_ms(5);
    #endif
   }

}

//----------------------------

void lcd_gotoxy(int8 x, int8 y)
{
int8 address;

if(y != 1)
   address = lcd_line_two;
else
   address=0;

address += x-1;
lcd_send_byte(0, 0x80 | address);
}


//-----------------------------
void lcd_putc(char c)
{
 switch(c)
   {
    case '\f':
      lcd_send_byte(0,1);
      delay_ms(2);
      break;

    case '\n':
       lcd_gotoxy(1,2);
       break;

    case '\b':
       lcd_send_byte(0,0x10);
       break;

    default:
       lcd_send_byte(1,c);
       break;
   }
}

//------------------------------
#ifdef USE_LCD_RW
char lcd_getc(int8 x, int8 y)
{
char value;

lcd_gotoxy(x,y);

// Wait until busy flag is low.
while(bit_test(lcd_read_byte(),7));

output_high(LCD_RS);
value = lcd_read_byte();
output_low(lcd_RS);

return(value);
}
#endif

sağolasın oyhan sonunda çözdüm lcd işini isteğim portdan sürebiliyorum diğerlerinide denedim ama olmadı birtek bu kod sonuç verdi teşekkürler...

[Gurkan-Demirbas]

Merhaba;
Hem 16F877 de hem de 16F628'de RA4'ler Open drain'dir; yani bir pull up koymak gerekiyor !...10K'lik bir pull up koyup kendi kodunu tekrar denermisin?

iyi çalışmalar

GürkaN