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Merge pull request #91 from geo-stark/master

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add serial lines manual control
This commit is contained in:
Martin Lund 2021-01-18 01:08:09 +01:00 • committed by GitHub
commit 3a1eea216a
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 62 additions and 1 deletions
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54
src/tty.c
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@ -30,6 +30,7 @@
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <termios.h>
#include <stdbool.h>
@ -69,7 +70,7 @@ static bool map_o_del_bs = false;
static void print_hex(char c)
{
printf("%02x ", (unsigned char) c);
printf("%02x ", (unsigned char)c);
}
static void print_normal(char c)
@ -77,10 +78,36 @@ static void print_normal(char c)
putchar(c);
}
static void toggle_line(const char *line_name, int mask)
{
int state;
if (ioctl(fd, TIOCMGET, &state) < 0)
{
error_printf("Could not get line state: %s", strerror(errno));
}
else
{
if (state & mask)
{
state &= ~mask;
tio_printf("set %s to LOW", line_name);
}
else
{
state |= mask;
tio_printf("set %s to HIGH", line_name);
}
if (ioctl(fd, TIOCMSET, &state) < 0)
error_printf("Could not set line state: %s", strerror(errno));
}
}
void handle_command_sequence(char input_char, char previous_char, char *output_char, bool *forward)
{
char unused_char;
bool unused_bool;
int state;
/* Ignore unused arguments */
if (output_char == NULL)
@ -109,9 +136,34 @@ void handle_command_sequence(char input_char, char previous_char, char *output_c
tio_printf(" ctrl-t s Show statistics");
tio_printf(" ctrl-t t Send ctrl-t key code");
tio_printf(" ctrl-t T Toggle timestamps");
tio_printf(" ctrl-t L Show lines");
tio_printf(" ctrl-t d Toggle DTR");
tio_printf(" ctrl-t r Toggle RTS");
tio_printf(" ctrl-t v Show version");
break;
case KEY_SHIFT_L:
if (ioctl(fd, TIOCMGET, &state) < 0)
{
error_printf("Could not get line state: %s", strerror(errno));
break;
}
tio_printf("Lines state:");
tio_printf(" DTR: %s", (state & TIOCM_DTR) ? "HIGH" : "LOW");
tio_printf(" RTS: %s", (state & TIOCM_RTS) ? "HIGH" : "LOW");
tio_printf(" CTS: %s", (state & TIOCM_CTS) ? "HIGH" : "LOW");
tio_printf(" DSR: %s", (state & TIOCM_DSR) ? "HIGH" : "LOW");
tio_printf(" DCD: %s", (state & TIOCM_CD) ? "HIGH" : "LOW");
tio_printf(" RI : %s", (state & TIOCM_RI) ? "HIGH" : "LOW");
break;
case KEY_D:
toggle_line("DTR", TIOCM_DTR);
break;
case KEY_R:
toggle_line("RTS", TIOCM_RTS);
break;
case KEY_B:
tcsendbreak(fd, 0);
break;