making a serial embeded terminal

This commit is contained in:
phyto 2019-05-18 17:58:44 +02:00
parent 9cdd17310d
commit 40e1d434ff
4 changed files with 160 additions and 1 deletions

12
ui/Makefile Normal file
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@ -0,0 +1,12 @@
CC = gcc
CCOPT = -Wall -g -DDEBUG_LEVEL=1
CLIB = core/libdd2m-core.a viz/libdd2m-viz.a
OSERIAL = ../serial/serial.o ../serial/funcs.o
terminal.o: terminal.c Makefile terminal.h
$(CC) ${CCOPT} $< -c
t: t.c terminal.o
${CC} ${CCOPT} $< terminal.o ${OSERIAL} -lncurses -o $@

2
ui/t.c
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@ -58,7 +58,7 @@ if (serial_in < 0) {
sleep(1);
foo = essai_terminal(serial_in, device, K);
fprintf(stderr, "essai terminal -> %d\n", foo);
return 0;
}
/* ---------------------------------------------------------------- */

141
ui/terminal.c Normal file
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/*
* emulateur de terminal
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/select.h>
#include <ncurses.h>
#include "../serial/serial.h"
#include "terminal.h"
extern int verbosity;
/* ---------------------------------------------------------------- */
static void bordure(WINDOW * w, char *texte, int type)
{
if (type)
box(w, 0, 0);
else
wborder(w, '|', '|', '-', '-', '+', '+', '+', '+');
wstandout(w); mvwaddstr(w, 0, 3, texte); wstandend(w);
wrefresh(w);
}
/* ---------------------------------------------------------------- */
static int interactive(WINDOW *glass, int fd_local, int fd_remote)
{
int flag_exit = 0;
long tstart, tcur;
char ligne[100];
/* --- variables for select */
struct timeval tv;
fd_set rfds;
int retval;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %p %d %d )\n", __func__,
glass, fd_local, fd_remote);
#endif
tstart = time(NULL);
wclear(glass); wrefresh(glass);
do {
tcur = time(NULL);
FD_ZERO(&rfds);
FD_SET(fd_local, &rfds); /* stdin */
FD_SET(fd_remote, &rfds); /* teletype */
tv.tv_sec = tv.tv_sec = 0; /* no timeout */
retval = select(2, &rfds, NULL, NULL, &tv);
wrefresh(glass); usleep(155*1000);
} while (! flag_exit);
sleep(1);
return -1;
}
/* ---------------------------------------------------------------- */
int run_the_terminal(int fd_serial, char *title, WINDOW *win)
{
WINDOW *terminal, *ecran;
int wid_term, hei_term, lin_term, col_term;
int foo;
char ligne[100];
unsigned char byte;
int fd_stdin;
lin_term = col_term = 4; /* position */
wid_term = 40;
hei_term = 25;
fd_stdin = fileno(stdin); /* for select or pool */
terminal = newwin(hei_term, wid_term, lin_term, col_term);
if ( NULL==terminal ) return -1;
bordure(terminal, title, 1);
ecran = subwin(terminal, hei_term-2, wid_term-2, lin_term+1, col_term+1);
if ( NULL==ecran ) return -2;
scrollok(ecran, 1);
if (verbosity) {
foo = mvwaddstr(ecran, 2, 14, "SCREEN READY\n");
#if DEBUG_LEVEL > 1
fprintf(stderr, "in '%s', mvwaddstr -> %d\n", __func__, foo);
#endif
wrefresh(ecran); sleep(2);
}
foo = interactive(ecran, fd_stdin, fd_serial);
sleep(1);
delwin(terminal);
touchwin(stdscr); wrefresh(stdscr);
return 0;
}
/* ---------------------------------------------------------------- */
int essai_terminal(int fd, char *txt, int k)
{
int lig, col;
int foo, retv;
#if DEBUG_LEVEL
fprintf(stderr, ">>> %s ( %d '%s' %d )\n", __func__,
fd, txt, k );
#endif
/*** initialisation de curses */
initscr();
nonl(); cbreak(); noecho();
for (lig=0; lig<LINES; lig++) {
for (col=0; col<COLS; col++) {
mvaddch(lig, col, "o+OX"[rand()%4]);
}
}
wrefresh(stdscr);
/*** passons a la partie active */
retv = run_the_terminal(fd, txt, stdscr);
/*** terminaison de curses */
endwin();
fprintf(stderr, "terminal return %d\n", retv);
return 0;
}
/* ---------------------------------------------------------------- */

6
ui/terminal.h Normal file
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/*** terminal emulation */
int run_the_terminal(int fd, char *title, WINDOW *win);
int essai_terminal(int fd, char *txt, int k);