LCD will nichts anzeigen (incl. Code)

/**************************************************************************

*

* INCLUDES

*

***************************************************************************/

#define   F_CPU 4000000UL

#include   <avr/io.h>

#include   <avr/pgmspace.h>

#include  <avr/io.h>

#include  <stdio.h>

#include  <stdlib.h>

#include   <inttypes.h>

#include   <avr/interrupt.h>

#include   <util/delay.h>

#include   "LCD.h"

/**************************************************************************

*

* UART

*

***************************************************************************/

#define BAUD     1200UL

#define UBRR_BAUD  ((F_CPU)/(16*(BAUD))-1)

/**************************************************************************

*

* MODUL GLOBAL VARS

*

***************************************************************************/

#if LCD_TYP == 0

static unsigned char actcntr = 1;                    /*!< Actual active lcd controller */

#endif

/**************************************************************************

*

* INTERNAL PROTOTYPES

*

**************************************************************************/

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn static void lcd_waitbusy( void );

 * \brief Wait until lcd is ready */

static void lcd_waitbusy( void );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn static void lcd_trig_enable( void );

 * \brief Controll enable pin from lcd */

static void lcd_trig_enable( void );

/**************************************************************************

*

* DEFINES

*

***************************************************************************/

// Lcd DDRAM register for 4x40 display

#if LCD_TYP == 0

#define MAXLINELENGHT 40 

prog_char screenpos[2] = { 0x80, 0xC0 };

#endif    

// Lcd DDRAM register for 2x40 display 

#if LCD_TYP == 1

#define MAXLINELENGHT 40 

prog_char screenpos[2] = { 0x80, 0xC0 };

#endif  

// Lcd DDRAM register for 2x24 display 

#if LCD_TYP == 2

#define MAXLINELENGHT 24 

prog_char screenpos[2] = { 0x80, 0xC0 };

#endif  

// Lcd DDRAM register for 4x20 display 

#if LCD_TYP == 3

#define MAXLINELENGHT 20 

prog_char screenpos[4] = { 0x80, 0xC0, 0x94, 0xD4 };

#endif

// Lcd DDRAM register for 4x16 display

#if LCD_TYP == 4

#define MAXLINELENGHT 16

prog_char screenpos[4] = { 0x80, 0xC0, 0x90, 0xD0 };

#endif

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_init( void ) 

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{ 

    register unsigned char i = 1;

    LCD_DDR_PORT = 0xFF;                         // Set data port to ouput

    RW_DDR |= (1<<RW);                           // Set r/w port to output

    RS_DDR |= (1<<RS);                           // Set cmd or data port to output

    ENA_DDR |= (1<<ENA);                         // Set enable port to output

    // Only if 4x40 lcd with second enable pin

    // is selected

#if LCD_TYP == 0

    ENA2_DDR |= (1<<ENA2);                       // Set enable 2 port to output

#endif

    // 8 bit mode part

#if LCD_MODE == 8

    _delay_ms(15);                               

#if LCD_TYP == 0

    // Init two controller

    for (i=1; i<=2; i++)

    {

#endif

        lcd_sendcom(LCD_INIT, i);                 // Diverse init managment

        _delay_ms(5);

        lcd_sendcom(LCD_INIT, i);

        _delay_us(150);

        lcd_sendcom(LCD_INIT, i);

        lcd_sendcom(LCD_8_2LINE, i);

        lcd_sendcom(LCD_ON, i);

        lcd_sendcom(LCD_CLEAR, i);

        lcd_sendcom(LCD_ENTRY_6, i);

#if LCD_TYP == 0

        actcntr = 2;

    }

    actcntr = 1;

#endif

#endif

    // 4 bit mode part

#if LCD_MODE == 4

    _delay_ms(15);                             // Diverse init managment 

#if LCD_TYP == 0

    // Init two controller

    for (i=1; i<=2; i++)

    {

#endif

        LCD_DATA_PORT = (LCD_DATA_PORT & 0x0F) | LCD_INIT;

        lcd_trig_enable();

        _delay_ms(5);

        LCD_DATA_PORT = (LCD_DATA_PORT & 0x0F) | LCD_INIT;

        lcd_trig_enable();

        _delay_us(150);

        LCD_DATA_PORT = (LCD_DATA_PORT & 0x0F) | LCD_INIT;

        lcd_trig_enable();

        LCD_DATA_PORT = (LCD_DATA_PORT & 0x0F) | LCD_4_1LINE;

        lcd_trig_enable();

        lcd_sendcom(LCD_4_2LINE, i);

        lcd_sendcom(LCD_ON, i);

        lcd_sendcom(LCD_CLEAR, i);

        lcd_sendcom(LCD_ENTRY_6, i);

#if LCD_TYP == 0

        actcntr = 2;

    }

    actcntr = 1;

#endif

#endif

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

static void lcd_waitbusy( void )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    LCD_DDR_PORT &= ~(1<<BUSY);

    RS_LOW();

    RW_HIGH();

#if LCD_TYP == 0

    actcntr == 1 ? ENA_HIGH() : ENA2_HIGH();

#else    

    ENA_HIGH();

#endif

    _delay_us(1);

    loop_until_bit_is_clear(BUSY_PIN_PORT,BUSY); // Wait until lcd is ready

#if LCD_TYP == 0

    actcntr == 1 ? ENA_LOW() : ENA2_LOW();

#else

    ENA_LOW();

#endif

    LCD_DDR_PORT |= (1<<BUSY);

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

static void lcd_trig_enable( void )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    // Only if 4x40 lcd is selected

#if LCD_TYP == 0

    // Lcd controller 1

    if (actcntr == 1)

    {

        ENA_HIGH();

        _delay_us(1);

        ENA_LOW();

    }

    // Lcd controller 2

    if (actcntr == 2)

    {

        ENA2_HIGH();

        _delay_us(1);

        ENA2_LOW();

    }

#else

    ENA_HIGH();

    _delay_us(1);

    ENA_LOW();

#endif    

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_sendcom( unsigned char command, unsigned char cntr )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    lcd_waitbusy();                                  

    RS_LOW();

    RW_LOW();

#if LCD_TYP == 0

    actcntr = cntr;

#endif        

  // 8 bit mode part

#if LCD_MODE == 8

    LCD_DATA_PORT = command;

#endif

  // 4 bit mode part

#if LCD_MODE == 4

    // Send high byte

    LCD_DATA_PORT = (command & 0xF0) | (LCD_DATA_PORT & 0x0F);

    lcd_trig_enable();

    BUSY_PORT &= ~(1<<BUSY); 

    // Send low byte 

    LCD_DATA_PORT = ((command << 4) & 0xF0) | (LCD_DATA_PORT & 0x0F);  

#endif

    lcd_trig_enable();

    LCD_DATA_PORT &= ~(1<<BUSY);

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_setcur( unsigned char ypos, unsigned char xpos )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

#if LCD_TYP == 0

register unsigned char tmp;

    switch (ypos)

    {

        case 3: 

                tmp = 2;

                ypos = 1;

                break;

        case 4: 

                tmp = 2;

                ypos = 2;

                break;

        default:

                tmp = 1;

    }

    lcd_sendcom(pgm_read_byte(&screenpos[ypos-1]) + (xpos-1), tmp);

#else

    lcd_sendcom(pgm_read_byte(&screenpos[ypos-1]) + (xpos-1), 1);

#endif

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_putchar( unsigned char data )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    lcd_waitbusy();

    RS_HIGH();

    RW_LOW();

  // 8 bit mode part

#if LCD_MODE == 8

    LCD_DATA_PORT = data;

#endif

  // 4 bit mode part

#if LCD_MODE == 4

    // send high byte

    LCD_DATA_PORT = (data & 0xF0) | (LCD_DATA_PORT & 0x0F);

    lcd_trig_enable();

    // send low byte 

    LCD_DATA_PORT = ((data << 4) & 0xF0) | (LCD_DATA_PORT & 0x0F);  

#endif

    lcd_trig_enable();

    LCD_DATA_PORT &= ~(1<<BUSY);

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_putstr( unsigned char *data )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    register unsigned char c,i;

    i = MAXLINELENGHT;

    while ( (c = *data++) && i-- ) 

        lcd_putchar(c);

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_putstr_xy( unsigned char *data, unsigned char ypos, unsigned char xpos )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    lcd_setcur( ypos, xpos );

    lcd_putstr( data );

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_putstr_pgm( const char *data )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    register unsigned char c,i;

    i = MAXLINELENGHT;

    while ( (c = pgm_read_byte(data++)) && i--)

        lcd_putchar(c);

}

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

extern void lcd_clearline( unsigned char line )

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

{

    register unsigned char i;

    lcd_setcur(line, 1);

    for (i=1; i <= MAXLINELENGHT; i++)

        lcd_putchar(0x20);

    lcd_setcur(line, 1);

}

int main(void)

{

// RS232 aktivieren  

  UCSRB   |= (1 << TXEN) | ( 1 << RXEN ) | ( 1 << RXCIE ) ;         // UART TX, RX einschalten

   UCSRC   |= ( 1 << UMSEL ) | ( 1<<UCSZ1 ) | ( 1<<UCSZ0 ) ;   // Asynchron 8N1, Parity none

   UBRRH  = (uint8_t) (UBRR_BAUD>>8);                      // USART Baud

    UBRRL  = (uint8_t) UBRR_BAUD;

  sei();

        char Titel = 'H';

  //lcd_waitbusy();

        while (!(UCSRA & (1<<UDRE)));

  UDR = 0x00;        // TEST das er startet

        lcd_init();

  lcd_putchar(Titel);

  while (!(UCSRA & (1<<UDRE)));

  UDR = 0x01;        // TEST danach

  _delay_ms(1000);

  return 0;

}

#ifndef LCDDRIVER_H

#define LCDDRIVER_H

/**************************************************************************

*

* DEFINES

*

***************************************************************************/

/*! \brief Select display typ here  

 *  \param LCD_TYP 0 = 4x40

 *  \param LCD_TYP 1 = 2x40, 1x40

 *  \param LCD_TYP 2 = 2x24, 1x24

 *  \param LCD_TYP 3 = 4x20, 2x20, 1x20          

 *  \param LCD_TYP 4 = 4x16, 2x16, 1x16 */ 

#define LCD_TYP          4

/*! \brief Select lcd controll mode here 

 *  \param LCD_MODE 8 = 8 Bit Mode

 *  \param LCD_MODE 4 = 4 Bit Mode */

#define LCD_MODE         8

#define LCD_INIT                0x30            /*!< Lcd init sequenz */

#define LCD_ON                  0x0C            /*!< Switch on lcd without cursor */

#define LCD_ON_C                0x0E            /*!< Switch on lcd with cursor */

#define LCD_ON_CB               0x0F            /*!< Switch on lcd with blinking cursor */

#define LCD_OFF                 0x08            /*!< Switch off lcd */

#define LCD_CLEAR               0x01            /*!< Clear complete lcd */

#define LCD_ENTRY_4             0x04            /*!< Display shift = OFF and decrement adress */

#define LCD_ENTRY_5             0x05            /*!< Display shift = ON  and decrement adress */

#define LCD_ENTRY_6             0x06            /*!< Display shift = OFF and increment adress */

#define LCD_ENTRY_7             0x07            /*!< Display shift = ON  and increment adress */

#define LCD_SHIFT_CURS_LEFT     0x10            /*!< Shift cursor left */

#define LCD_SHIFT_CURS_RIGHT    0x14            /*!< Shift cursor right */

#define LCD_SHIFT_DISP_LEFT     0x18            /*!< Shift lcd left */

#define LCD_SHIFT_DISP_RIGHT    0x1C            /*!< Shift lcd right */

//! config lines and matrix for 8 bit mode

#define LCD_8_1LINE             0x30

#define LCD_8_2LINE             0x38              

//! config lines and matrix for 4 bit mode

#define LCD_4_1LINE             0x20 

#define LCD_4_2LINE             0x28                   

#define LCD_DDR_PORT    DDRA                    /*!< Lcd data DDR */

#define LCD_DATA_PORT   PORTA                   /*!< Lcd data PORT */

#define LCD_DATA_PIN    PINA                    /*!< Lcd data PORTIN */

#define RS_DDR          DDRC                    /*!< Data or command DDR */

#define RS_PORT         PORTC                   /*!< Data or command PORT */

#define RS              PORTC4                  /*!< Data or command BIT */

#define ENA_DDR         DDRC                    /*!< Enable DDR */

#define ENA_PORT        PORTC                   /*!< Enable PORT */ 

#define ENA             PORTC5                  /*!< Enable BIT */

#define RW_DDR          DDRC                    /*!< Read / write DDR */

#define RW_PORT         PORTC                   /*!< Read / write PORT */ 

#define RW              PORTC6                  /*!< Read / write BIT */

#define BUSY_PORT       PORTC                   /*!< Busy PORT */

#define BUSY_PIN_PORT   PINC                    /*!< Busy PORTIN */

#define BUSY            PORTC3                  /*!< Busy BIT */

#define ENA2_DDR        DDRC                    /*!< Enable 2 DDR */

#define ENA2_PORT       PORTC                   /*!< Enable 2 PORT */

#define ENA2            PORTC3                  /*!< Enable 2 BIT */

#define RS_HIGH()  (RS_PORT|=(1<<RS))

#define RS_LOW()   (RS_PORT&=~(1<<RS))

#define RW_HIGH()  (RW_PORT|=(1<<RW))

#define RW_LOW()   (RW_PORT&=~(1<<RW))

#define ENA_HIGH() (ENA_PORT|=(1<<ENA))

#define ENA_LOW()  (ENA_PORT&=~(1<<ENA))

#define ENA2_HIGH() (ENA2_PORT|=(1<<ENA2))

#define ENA2_LOW()  (ENA2_PORT&=~(1<<ENA2))

/**************************************************************************

*

* GLOBAL PROTOTYPES

*

***************************************************************************/

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcd_init( void );

 * \brief Init lcd display */

extern void lcd_init( void );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcd_setcur( unsigned char ypos, unsigned char xpos );

 * \brief Set cursor to special position

 * \param ypos = ypos on lcd

 * \param xpos = xpos on lcd */

extern void lcd_setcur( unsigned char ypos, unsigned char xpos );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcd_sendcom( unsigned char command, unsigned char cntr );

 * \brief Send command to display

 * \param command = Lcd command

 * \param cntr = Lcd controller 1 or 2 second controller only at 4x40 lcd available */

extern void lcd_sendcom( unsigned char command, unsigned char cntr );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcd_putchar( unsigned char data );

 * \brief Send single character to display

 * \param data = Singel byte character */

extern void lcd_putchar( unsigned char data );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcd_putstr( unsigned char *data );

 * \brief Sends a string out of SRAM to display 

 * \param *data = Pointer to string into SRAM */

extern void lcd_putstr( unsigned char *data );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcdputstr_xy( unsigned char *data, unsigned char ypos, unsigned char xpos );

 * \brief Sends a string out of SRAM to display with the additinal feature to set the xy pos on lcd.

 * \param *data = Pointer to string into SRAM */

extern void lcd_putstr_xy( unsigned char *data, unsigned char ypos, unsigned char xpos );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcd_putstr_pgm( const char *data );

 * \brief Send string out of flash memory to display 

 * \param *data = Const pointer into flash memory */

extern void lcd_putstr_pgm( const char *data );

//:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

/*!\fn extern void lcd_clearline( unsigned char line );

 * \brief Clear a complete line from display

 * \param line = Line number to clear */            

extern void lcd_clearline( unsigned char line );

#endif // LCDDRIVER_H