/* code contrôle de l'imprimante 
 *
 * EPSON LQ 570 + 
 * P406
 * Buffer size = 8kB
 *
 * Commandes indisponible pour ce modèle :
 * ESC r : color*/


#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <termios.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <strings.h>

#define SPEED B9600
#define PATH "/dev/usb/lp0"

unsigned char ESC=0x1B;
unsigned char AT = 0x40;//@
unsigned char CR = 0x0D;
unsigned char LF = 0x0A;
unsigned char FF = 0x0C;
unsigned char OPAR = 0x28;//(
unsigned char C = 0x43;
unsigned char c = 0x63;
unsigned char NUL = 0;
unsigned char UN = 1;
unsigned char DX = 2;
unsigned char TROIS = 3;
unsigned char QUATRE = 4;
unsigned char NEUF = 0x39;
unsigned char HUIT = 0x38;
unsigned char VINGT = 20;
unsigned char CVS = 0x7F;//127
unsigned char SQ = 0x40; //64
unsigned char v = 0x76;
unsigned char V = 0x56;
unsigned char U = 0x55;
unsigned char DOL = 0x24;//$
unsigned char BSLASH = 0x5C;// "\"
unsigned char SOIXANTE = 60;
unsigned char DOT = 0x2E;// .

unsigned char q = 0x71;
unsigned char k = 0x6B;
unsigned char t = 0x74;
unsigned char r = 0x72;
unsigned char X = 0x58;
unsigned char EQUAL = 0x3D;

unsigned char l = 0x6C;
unsigned char Q = 0x51;


void init_impr(int fd)
{
	int france=1;
	unsigned char R = 0x52;
	write(fd, &ESC, 1); //ESC
	write(fd, &AT, 1); //@ : ESC @ permet d'initialiser l'imprimante

	write(fd,&R,1);
	write(fd,&france,1);

	write(fd, &CR, 1);
	write(fd, &LF, 1);
}

void beep(int fd)
{
	unsigned char BEL = 0x07; //BEL beeper
	write(fd,&BEL,1);
}

void bold(int fd,int on)
{

	unsigned char E = 0x45;
	unsigned char F = 0x46;
	write(fd,&ESC,1);
	if(on==1){
		write(fd,&E,1);
	}
	else{
		write(fd,&F,1);
	}
}

void italic(int fd, int on)
{
	unsigned char IQ = 0x34;
	unsigned char IC = 0x35;
	write(fd,&ESC,1);
	if(on==1){
		write(fd,&IQ,1);
	}
	else{
		write(fd,&IC,1);
	}
}

void double_strike(int fd, int on)
{

	unsigned char G = 0x47;
	unsigned char H = 0x48;
	write(fd,&ESC,1);
	if(on==1){
		write(fd,&G,1);
	}
	else{
		write(fd,&H,1);
	}
}

void paper_out_detector(int fd, int on)
{
	write(fd,&ESC,1);
	if(on==1){
		write(fd,&NEUF,1);
	}
	else{
		write(fd,&HUIT,1);
	}
}

void underline(int fd, int on)
{
	unsigned char UNDERLINE = 0x2D; // -
	write(fd,&ESC,1);
	write(fd,&UNDERLINE,1);
	write(fd,&on,1);
}

void hor_tab(int fd)
{
	unsigned char HT = 0x09;
	write(fd,&HT,1);
}

void ver_tab(int fd)
{
	unsigned char VT = 0x0B;
	write(fd,&VT,1);
}

struct termios saveterm;

int init_serial(char *device,int speed) {			// Fonction pour initialiser le port Serie
	struct termios new;
	int fd=open(device,O_RDWR|O_NOCTTY);// On ouvre un descripteur de fichier en mode lecture et ecriture, ici ça sera notre port série 
	if(fd<0){perror(device); exit(-1);}
	tcgetattr(fd,&saveterm); // save current port settings 
	bzero(&new,sizeof(new));
	new.c_cflag=CLOCAL|CREAD|speed|CS8;
	new.c_iflag=0;
	new.c_oflag=0;
	new.c_lflag=0;  // set input mode (non-canonical, no echo,...) 
	new.c_cc[VTIME]=0; // inter-character timer unused 
	new.c_cc[VMIN]=1; // blocking read until 1 char received 
	tcflush(fd, TCIFLUSH);
	tcsetattr(fd,TCSANOW,&new);
	return fd;
}

void close_serial(int fd) { // fermeture du Port Série
	tcsetattr(fd,TCSANOW,&saveterm);
	close(fd);
}

void multipoint_print_mode(int fd){

	/* Color multipoint font driver P335 */

	printf("Début du mode multipoint\n");

	/* Step 1 : Start Job */

	printf("Initialisation de l'imprimante\n");
	init_impr(fd);

	/* Step 2 : Set Specific Configuration */

	/* Set units ESC ( U */
	/* A4 8.27 x 11.69 inches */

	write(fd,&ESC,1);
	write(fd,&OPAR,1);
	write(fd,&U,1);
	write(fd,&UN,1);
	write(fd,&NUL,1);
	/* Unit is 1/60inch */
	write(fd,&SOIXANTE,1);

	/* Assign character table ESC ( t */

	write(fd,&ESC,1);
	write(fd,&OPAR,1);
	write(fd,&t,1);
	write(fd,&TROIS,1);
	write(fd,&NUL,1);
	/* Select tab 1 */
	write(fd,&NUL,1);
	/* Canada - French */
	write(fd,&HUIT,1);
	write(fd,&NUL,1);

	/* Set page length ESC ( C */

	write(fd,&ESC,1);
	write(fd,&OPAR,1);
	write(fd,&C,1);
	write(fd,&DX,1);
	write(fd,&NUL,1);
	unsigned char CQVN = 189;
	write(fd,&CQVN,1);
	write(fd,&DX,1);

	/* Set page format ESC ( c */

	write(fd,&ESC,1);
	write(fd,&OPAR,1);
	write(fd,&c,1);
	write(fd,&QUATRE,1);
	write(fd,&NUL,1);
	write(fd,&NUL,1);
	write(fd,&CQVN,1);
	write(fd,&DX,1);

	/* Set pitch ESC X, ESC P, ESC M, ESC g */

	/* Set left and right margins ESC l,Q */
	/* Using default configuration */

	/* Set line spacing n/360" */

	/* Step 3 : Adjust Vertical Print Position OPTIONNAL */

	/* Step 4 : Adjust Horizontal Print Position OPTIONNAL */


	/* Step 5 : Output Text */
	//table 0
	write(fd,&ESC,1);
	write(fd,&t,1);
	write(fd,&NUL,1);

	int i=0,cpt_max=100;
	unsigned char data=0x69;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0x55;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0x2A;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0xA2;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);
	//table 1
	write(fd,&ESC,1);
	write(fd,&t,1);
	write(fd,&UN,1);
	
	data=0x69;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0x55;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0x2A;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0xA2;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	double_strike(fd,1);
	data=0x69;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0x55;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0x2A;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);

	data=0xA2;
	for(i=0;i<cpt_max;i++)
		write(fd,&data,1);
	write(fd,&CR,1);


	/* Final step : End Page & End Job */

	/* Send FF */
	write(fd,&FF,1);
	/* ESC @ */
	write(fd,&ESC,1);
	write(fd,&AT,1);
}

/* RLE Compressed Raster Graphics p.336 */
void rle_mode(int fd){

	/* Step 1 : Start Job */
	write(fd,&ESC,1);
	write(fd,&AT,1);

	/* Step 2 : Enter Raster Graphics Mode */
	write(fd,&ESC,1);
	write(fd,&OPAR,1);
	unsigned char G = 0x47;
	write(fd,&G,1);
	write(fd,&UN,1);
	write(fd,&NUL,1);
	write(fd,&UN,1);
	/* Step 3 : Specific Configuration */
	// default
	
	/* Step 4 : Horizontal & Vertical Print Position */
	// default
	
	/* Step 5 : Output Raster Graphics */
	write(fd,&ESC,1);
	write(fd,&BSLASH,1);
	write(fd,&NUL,1);
	write(fd,&NUL,1);

	write(fd,&ESC,1);
	write(fd,&DOT,1);
	write(fd,&NUL,1); // Full graphics mode (no RLE)
	write(fd,&VINGT,1);
	write(fd,&VINGT,1);
	write(fd,&UN,1); // rows of dot graphics 1,8 or 24
	write(fd,&NUL,1); // columns of dot graphics
	write(fd,&QUATRE,1); // horizontal dot count = 1024
	// k = 128
	int cpt = 0,data=0x47;
	for(cpt=0;cpt<127;cpt++)
		write(fd,&data,1);
	data=0x6E;
	for(cpt=0;cpt<127;cpt++)
		write(fd,&data,1);

	/* END */
	write(fd,&CR,1);
	write(fd,&FF,1);
	write(fd,&ESC,1);
	write(fd,&AT,1);	
}

int main(void) {
	int mode = 1;
	int fd = init_serial(PATH, SPEED);
	printf("Debut de controle imprimante\n");
	printf("Choisir un mode d'impression :\n 1 = Multipoint \t 2 = Compressed Raster Graphics\n");
	scanf("%d",&mode);
	switch(mode){
		case 1 :
			multipoint_print_mode(fd);
			break;
		case 2 :
			rle_mode(fd);
			break;
	}
	close_serial(fd);
	return 0;
}