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add serial lines manual control

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This commit is contained in:
George Stark 2019-09-19 15:13:38 +03:00
parent 39a8f63640
commit 04d92740f5
3 changed files with 60 additions and 1 deletions
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3
src/include/tio/tty.h
View file

@ -34,6 +34,9 @@
#define KEY_SHIFT_T 0x54
#define KEY_CTRL_T 0x14
#define KEY_V 0x76
#define KEY_D 0x64
#define KEY_R 0x72
#define KEY_SHIFT_L 0x4C
#define NORMAL 0
#define HEX 1

52
src/tty.c
View file

@ -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 +136,32 @@ 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));
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;