/*
 * DO NOT REMOVE THIS COPYRIGHT NOTICE
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *      By using this code, the user hereinafter agrees to
 *      abide by all the terms and conditions of the following
 *      agreement that nobody ever reads, as well as the
 *      Geneva Convention and the U.N. Charter and the Secret
 *      Membership Oath of the Benevolent Protective Order of
 *      the Elks and such other terms and conditions, real and
 *      imaginary, as the Software Company shall deem necessary
 *      and appropriate, including the right to come to the user's home
 *      and examine the user's hard drive, as well as the user's
 *      underwear drawer if we feel like it, take it or leave it, until
 *      death do us part, one nation indivisible, by the dawn's early
 *      light,... finders keepers, losers weepers, thanks you've been a
 *      great crowd, and don't forget to tip your servers.
 *
 */

/*----------------------------------------------------------------------------*/

#pragma db
#include <reg52.h>

/*----------------------------------------------------------------------------*/

sfr dataBus = 0xa0;
sbit E  = P1^1;
sbit RS = P1^0;

/*----------------------------------------------------------------------------*/

static void EnableLCD( int t ) {

	unsigned char i;

	E = 1; for(i=0; i<t; i++);
	E = 0; for(i=0; i<t; i++);
}

/*----------------------------------------------------------------------------*/

void InitLCD(void) {

	RS = 0;
	dataBus = 0x38; EnableLCD(255);
	dataBus = 0x38; EnableLCD(255);
	dataBus = 0x38; EnableLCD(255);
	dataBus = 0x01; EnableLCD(255);
	dataBus = 0x0C; EnableLCD(255);
	dataBus = 0x06; EnableLCD(255);
	RS = 1;
}

/*----------------------------------------------------------------------------*/

void ClearScreen(void) {

	RS = 0;
	dataBus = 0x01; EnableLCD(255);
	RS = 1;
}

/*----------------------------------------------------------------------------*/

void MoveCursor(unsigned char r, unsigned char c) {

	const unsigned char code OFFSET[] = { 128, 192, 148, 212 };

	RS = 0;
	dataBus = (OFFSET[r] + c); EnableLCD(255);
	RS = 1;
}

/*----------------------------------------------------------------------------*/

void PutChar(char c) {

	dataBus = c; EnableLCD(45);
}

/*----------------------------------------------------------------------------*/

void PrintString(const char* s) {

	while( *s ) dataBus = *(s++), EnableLCD(45);
}