Charactor LCD 구동

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  //4 bit part

_delay_ms(40); // Change from 15 to 40ms

LDP=0xFC; // PORTD ->23  LED output

LCP=0x07;   // High C port for ADC input : PORTC->012 output

LDDR=1<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4;

LCDR=1<<LCD_E|1<<LCD_RW|1<<LCD_RS;

    //---------one------

LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(5);

LCP&=~(1<<LCD_E);

_delay_ms(5); // Change from 2 to 5

//-----------two-----------

LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|1<<LCD_D4; //4 bit mode

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(1);

LCP&=~(1<<LCD_E);

_delay_ms(2);

//-------three-------------

LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4; //4 bit mode

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

_delay_ms(2);

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

//LCDsendCommand(0b00101000); 4 bit dual line, font 5x7

  //LCDsendCommand(0b00001100); increment address, cursor shift off

// ------------------ Function set ------------

LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4; // DL = 4bit mode

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

//LDP=0<<LCD_D7|0<<LCD_D6|1<<LCD_D5|0<<LCD_D4; // repeat

//LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

//_delay_ms(2);

//LCP&=~(1<<LCD_E);

LDP=1<<LCD_D7|0<<LCD_D6|0<<LCD_D5|0<<LCD_D4; // N=1 : 2 line

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

LDP=0<<LCD_D7|0<<LCD_D6|0<<LCD_D5|0<<LCD_D4; // Display off

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

LDP=1<<LCD_D7|1<<LCD_D6|0<<LCD_D5|1<<LCD_D4; // Display on, cursor off

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

/*

LDP=0<<LCD_D7|0<<LCD_D6|0<<LCD_D5|0<<LCD_D4;

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

LDP=0<<LCD_D7|0<<LCD_D6|0<<LCD_D5|1<<LCD_D4; // Display clear

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

LDP=0<<LCD_D7|0<<LCD_D6|0<<LCD_D5|0<<LCD_D4;

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

LDP=0<<LCD_D7|1<<LCD_D6|1<<LCD_D5|1<<LCD_D4; // Entry mode set

LCP=1<<LCD_E|0<<LCD_RW|0<<LCD_RS;

_delay_ms(2);

LCP&=~(1<<LCD_E);

*/