//Starts a data input session
//Read characters from keyboard
//Ends with ESC (cancelled) or ENTER (confirmed)
uint8_t input_password() {
uint8_t cnt = 0;
uchar c;
lcd_clrscr();
kb_clear_buff();
c = kb_get_char();
while (c != '\r') {
if (c == ESC) {
return 0;
} else if (c == BACKSPACE) {
cnt = lcd_backspace(cnt);
} else if ((c < 0x80) && (cnt < LCD_LINES * LCD_DISP_LENGTH)) {
//If ASCII character is printable
lcd_putc(c);
stringBuffer[cnt++] = c;
}
c = kb_get_char();
}
return cnt;
}
//
//**********************************
// M B A C K S P A C E
//
// eingegebenes Zeichen l�schen
//
void m_backspace ()
{
m_reset_timer();
lcd_backspace();
f_in_buf[cpos]=0;
}
static int lcd_write(struct tty_struct *tty, const unsigned char *buf,
int count)
{
struct lcd *lcd_data = tty->driver_data;
int buf_i = 0, left;
char val;
#ifdef DEBUG
char *dbgbuf = kzalloc(count + 1, GFP_KERNEL);
strncpy(dbgbuf, buf, count);
pr_debug("\n%s: count=%d buf[0]=%02x --->%s<---\n", __func__, count,
buf[0], dbgbuf);
#endif /* DEBUG */
if (count == 0) {
#ifdef DEBUG
kfree(dbgbuf);
#endif /* DEBUG */
return 0;
}
while (buf_i < count) {
left = count - buf_i;
/* process displayable chars */
if ((0x20 <= buf[buf_i]) && (buf[buf_i] <= 0x7f)) {
while ((buf_i < count) &&
((0x20 <= buf[buf_i]) && (buf[buf_i] <= 0x7f))) {
val = lcd_translate_printable_char(buf[buf_i]);
lcd_add_char_at_cursor(lcd_data, val);
buf_i++;
}
/* flush the line out to the display when we get to eol */
lcd_reprint_one_line(lcd_data, lcd_data->cursor_line);
/*
* ECMA-48 CSI sequences (from console_codes man page)
*
* ESC [ 2 J : erase whole display.
* ESC [ 2 K : erase whole line.
*/
} else if (buf[buf_i] == ASCII_ESC) {
if ((left >= 4) &&
(buf[buf_i + 1] == '[') &&
(buf[buf_i + 2] == '2') &&
(buf[buf_i + 3] == 'J')) {
pr_debug("ESC [2J = clear screan\n");
lcd_clear_buffer(lcd_data);
lcd_cmd_clear_screen(lcd_data);
buf_i += 4;
} else if ((left >= 4) &&
(buf[buf_i + 1] == '[') &&
(buf[buf_i + 2] == '2') &&
(buf[buf_i + 3] == 'K')) {
pr_debug("ESC [2K = clear line\n");
lcd_clear_buffer_line(lcd_data, lcd_data->cursor_line);
lcd_reprint_one_line(lcd_data, lcd_data->cursor_line);
lcd_cmd_set_cursor(lcd_data, lcd_data->cursor_line, 0);
lcd_data->cursor_col = 0;
buf_i += 4;
} else {
pr_debug("Unsupported escape sequence\n");
buf_i++;
}
} else if ((left >= 2) &&
(buf[buf_i] == ASCII_CR) && (buf[buf_i + 1] == ASCII_LF)) {
pr_debug("ASCII_CR/LF\n");
lcd_crlf(lcd_data);
buf_i += 2;
} else if ((left >= 1) && (buf[buf_i] == ASCII_CR)) {
pr_debug("ASCII_CR\n");
lcd_crlf(lcd_data);
buf_i++;
} else if ((left >= 1) && (buf[buf_i] == ASCII_LF)) {
pr_debug("ASCII_LF\n");
lcd_crlf(lcd_data);
buf_i++;
} else if ((left >= 1) && (buf[buf_i] == ASCII_BS)) {
pr_debug("ASCII_BS\n");
lcd_backspace(lcd_data);
buf_i++;
} else {
pr_debug("%s - Unsupported command 0x%02x\n", __func__, buf[buf_i]);
buf_i++;
}
}
#ifdef DEBUG
kfree(dbgbuf);
#endif /* DEBUG */
return count;
}
