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Removed obsolete c-display daemon

master
Sebastian Lohff 11 years ago
parent
738b8cf240
commit
d788878d57
2 changed files with 0 additions and 406 deletions
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  1. 6
      display-daemon/Makefile
  2. 400
      display-daemon/ser.c

6
display-daemon/Makefile
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@ -1,6 +0,0 @@ @@ -1,6 +0,0 @@
CFLAGS=-g -Wall
ser: ser.c
gcc -ggdb -Wall ser.c -o ser -lpthread
#mipsel-linux-uclibc-gcc -o ser.mips ser.c -lpthread
run: ser
./ser

400
display-daemon/ser.c
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@ -1,400 +0,0 @@ @@ -1,400 +0,0 @@
/*
* Copyright (C) 2011 Florian Streibelt <florian@freitagsrunde.org>
* Licensed under GPL v3 or later
*
*/
#include <stdio.h> /* Standard input/output definitions */
#include <string.h> /* String function definitions */
#include <unistd.h> /* UNIX standard function definitions */
#include <fcntl.h> /* File control definitions */
#include <errno.h> /* Error number definitions */
#include <termios.h> /* POSIX terminal control definitions */
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <pthread.h> /* Posix 1003.1c threads */
#include <signal.h>
#include <unistd.h>
int fd;
int display_dirty=0;
int screensaver;
int brightness = 4;
int offset = 0;
char *fifo;
char *pausemsg = NULL;
pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
pthread_t thread1;
int
initport (int fd)
{
struct termios options;
// Get the current options for the port...
tcgetattr (fd, &options);
// Set the baud rates to 9600...
cfsetispeed (&options, B9600);
cfsetospeed (&options, B9600);
// Enable the receiver and set local mode...
options.c_cflag |= (CLOCAL | CREAD);
options.c_cflag &= ~PARENB;
options.c_cflag &= ~CSTOPB;
options.c_cflag &= ~CSIZE;
options.c_cflag |= CS8;
// Set the new options for the port...
tcsetattr (fd, TCSANOW, &options);
return 1;
}
//reset the display to defaults
char display_init[] = { 0x1b, 0x40 };
//show or hide the cursor
char display_cursor_off[] = { 0x1f, 0x43, 0x0 };
char display_cursor_on[] = { 0x1f, 0x43, 0x1 };
// blink-command:
// where the last value defines the blink rate,
// with 0=always on, 255=always off
char display_on[] = { 0x1f, 0x45, 0x0 };
char display_off[] = { 0x1f, 0x45, 0xff };
//Modes for new chars:
char display_overwrite[] = { 0x1f, 0x01 };
char display_vscroll[] = { 0x1f, 0x02 };
char display_hscroll[] = { 0x1f, 0x03 };
//clear and cursor home
char display_clear_screen[] = { 0x0c };
// activate timer display in lower right corner.
// actual time has to be set via display_set_timer.
char display_time[] = { 0x1f, 0x55 };
// configures hour and minutes of the internal clock and
// displays the time in the lower right corner.
// turns off when something gets written into the line.
// two bytes have to follow with hour and minute
char display_set_timer[] = { 0x1F, 0x54 };
// various commands for the display:
// send a command sequence from the heap(!) {sizeof used}
// only to be used within the macros presented below!
#define DWC(c) display_write(c,sizeof(c))
//send a null terminated string:
#define SEND_TEXT(t) display_write(t,strlen(t))
//various commands
#define SEND_DISPLAY_INIT DWC(display_init)
#define SEND_CURSOR_OFF DWC(display_cursor_off)
#define SEND_CURSOR_ON DWC(display_cursor_on)
#define SEND_DEFINE_TIMER DWC(display_set_timer)
#define SEND_SHOW_TIMER DWC(display_time)
#define SEND_MODE_OVERWRITE DWC(display_overwrite)
#define SEND_MODE_VSCROLL DWC(display_vscroll)
#define SEND_MODE_HSCROLL DWC(display_hscroll)
#define SEND_DISPLAY_OFF DWC(display_off)
#define SEND_DISPLAY_ON DWC(display_on)
#define SEND_CLEAR DWC(display_clear_screen);
// internal defines.
#define TIME_BASE 200000
#define TB_TO_SECS(x) (x*1000000/TIME_BASE)
#define TIME_CLOCK TB_TO_SECS(65)
#define TIME_DIM TB_TO_SECS(90)
#define TIME_OFF TB_TO_SECS(520)
#define DEVICE "/dev/ttyUSB0"
// chars per line in our display:
#define LINELEN 20
void
display_write (const void *buf, size_t count)
{
pthread_mutex_lock (&mutex1);
write (fd, buf, count);
pthread_mutex_unlock (&mutex1);
}
void
display_putstring (char *s)
{
screensaver = 0;
SEND_TEXT (s);
}
void
showtime (void)
{
SEND_CURSOR_OFF;
char c[5] = { 0x1F, 0x54, 0x00, 0x00 };
time_t timer; // Define the timer
struct tm *tblock; // Define a structure for time block
timer = time (NULL);
tblock = localtime (&timer);
c[2] = tblock->tm_hour;
c[3] = tblock->tm_min;
display_write (&c, 4);
SEND_MODE_HSCROLL;
char *msg = "Freitagsrunde 4!";
display_write (msg, strlen (msg));
}
void
send_display_init(){
SEND_DISPLAY_INIT;
SEND_CURSOR_OFF;
SEND_DISPLAY_ON;
SEND_MODE_OVERWRITE;
}
void
display_dim (short i)
{
// return;
if (i == brightness)
{
//printf ("display_dim: would not change brightness. abort.\n");
return;
}
if (i > 0 && i < 5)
{
int l = 0;
char *d;
if (brightness == 0)
{
send_display_init();
char c[4] = { 0x1f, 0x58, 0x04, 0x00 };
l = 6;
//c[5]=i;
d = c;
}
else
{
//set brightness directly:
char c[4] = { 0x1f, 0x58, 0x01, 0x00 };
l = 3;
c[2] = i;
d = c;
//printf ("command mode: %x \n", c[2]);
}
display_write (d, l);
brightness = i;
}
else if (i == 0)
{
//turn off
SEND_DISPLAY_OFF;
brightness = i;
}
}
void *
rthread (void *args)
{
int pipe;
char pc = ' ';
char c = ' ';
while (1)
{
pipe = open ("/tmp/display", O_RDONLY);
int r;
while ((r = read (pipe, &c, 1)) > 0)
{
screensaver = 0;
if (display_dirty) {
printf("DEBUG: resetting display\n");
send_display_init();
display_dirty=0;
}
display_dim (4);
if (pc == '\n')
{
display_write (&pc, 1);
}
if (c != '\n')
{
display_write (&c, 1);
}
pc = c;
}
close (pipe);
}
}
void
sighandler (int sig)
{
pthread_kill (thread1, 0);
send_display_init();
SEND_DISPLAY_OFF;
close (fd);
if (fifo)
{
unlink (fifo);
}
exit (0);
//signal(sig, sighandler);
}
void scrolltext(){
if (pausemsg){
char *message = calloc (LINELEN + 1, sizeof (char));
int spaces=0;
if (offset<LINELEN){
spaces = LINELEN-offset; //anzahl spaces im ersten durchgang
memset(message , ' ', spaces);
}
strncpy (message+spaces, pausemsg + offset - LINELEN, LINELEN-spaces);
offset=(offset + 1) % (strlen(pausemsg)+LINELEN);
if (offset==0){
offset=LINELEN;
}
int l = strlen (message);
if (l < LINELEN)
{
message = strncat (message, pausemsg, LINELEN - l);
}
SEND_TEXT ("\x0b");
SEND_TEXT (message);
free (message);
}
}
int
main (int argc, char **argv)
{
char *devnode;
//TODO: arg parser!
fifo = strdup ("/tmp/display");
pausemsg = NULL ; //strdup("Bitte scanne Deine ID-Karte um Dich anzumelden *** ");
if (argc != 2)
{
devnode = strdup (DEVICE);
printf ("no device specified, using default %s\n", devnode);
}
else
{
devnode = strdup (argv[1]);
}
fd = open (devnode, O_RDWR | O_NOCTTY | O_NDELAY);
if (fd == -1)
{
perror (devnode);
return 1;
}
else
{
fcntl (fd, F_SETFL, 0);
}
initport (fd);
//init display, set, vertical scroll, cursor off
send_display_init();
pthread_create (&thread1, NULL, rthread, NULL);
signal (SIGINT, sighandler);
if (mkfifo (fifo, S_IRWXU | S_IRWXG | S_IRWXO))
{
perror (fifo);
if (errno != EEXIST && errno != ESPIPE)
{
return (1);
}
}
//showtime();
display_putstring ("Display initialized ");
display_putstring (fifo);
sleep (3);
screensaver = 0;
offset = 0; // offset for scrolltext in screensaver
while (1)
{
usleep (TIME_BASE);
if (0 == (screensaver) % TB_TO_SECS (1))
{
//one-second event comes HERE:
printf
("debug: screensaver: %d time until clock: %d time until dim: %d time until off: %d\n",
screensaver, TIME_CLOCK - screensaver, TIME_DIM - screensaver,
TIME_OFF - screensaver);
}
//printf ("screensaver = %05d brightness: %d\n", screensaver, brightness);
if (screensaver < (TIME_CLOCK + TIME_OFF + TIME_DIM + 10)){
screensaver++;
}
if (screensaver == TIME_CLOCK)
{
display_dirty=1;
showtime ();
}
if (screensaver == TIME_OFF)
{
display_dirty=1;
display_dim (0);
}
//show a scroll text while the screensaver is active...
if ((screensaver > (TIME_CLOCK + 10)) && (screensaver < TIME_OFF))
{
display_dirty=1;
scrolltext();
}
//after some more seconds of inactivity dim display and finally turn off
if ((screensaver > TIME_DIM) && (brightness > 1))
{
//printf ("dimming\n");
display_dim (brightness - 1);
}
}
//you'll never get here
close (fd);
return 0;
}
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