/*
 *
 * http://wildsau.idv.uni-linz.ac.at/%7Eherp/Crystalfontz/lcdtest.c
 *
 * lcdtest.c
 *
 */

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

int fd;

void die(char *s) {
        if (errno) perror(s);
        else fprintf(stderr,"%s\n",s);
        exit(-1);
}

void lcdtest() {
struct {
        char cust_char[10];
        char charno;
} seq;
int i,j;

        seq.cust_char[0]=25;
        seq.charno=128;
        for (i=0;i<8;i++) {
                seq.cust_char[1]=(char)i;
                for(j=0;j<8;j++) seq.cust_char[2+j]=(char)(i+j);
                write(fd,(char *)&seq,sizeof(seq));
                seq.charno++;
        }
        write(fd,"\r\nABCDEFGH",10);
        pause();
}

int main() {
struct termios termios;

        fd=open("/dev/ttyS0",O_WRONLY|O_EXCL);
        if (fd==-1) die("open");
        if (tcgetattr(fd,&termios)==-1) die("tcgetattr");
        cfmakeraw(&termios);
        cfsetospeed(&termios,B9600);
        if (tcsetattr(fd,TCSANOW,&termios)==-1) die("tcsetattr");
        usleep(350000);
        write(fd,"\004\024\030",3);     /* hide cursor/wrap=off/scroll=off */
        lcdtest();
}
/*
 * end of file
 */