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* make pseudoterm reset terminal on sigint, make it honour ctrl-c
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#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <unistd.h> | ||
#include <string.h> | ||
#include <ctype.h> | ||
#include <sys/types.h> | ||
#include <sys/stat.h> | ||
#include <fcntl.h> | ||
#include <termios.h> | ||
#include <sys/ioctl.h> | ||
#include <signal.h> | ||
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#include "serial.h" | ||
#include "pthread.h" | ||
#include "download.h" | ||
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int tty_fd; | ||
int stopped = 0; | ||
char* port_name = "/dev/ttyUSB1"; | ||
pthread_t serial_reader; | ||
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void* serial_reader_func(void* arg) { | ||
unsigned char buf[255]; | ||
while(1) { | ||
int n = read_serial_port(buf, sizeof(buf)); | ||
if (n > 0) { | ||
write(tty_fd, buf, n); | ||
} | ||
} | ||
} | ||
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int init() { | ||
int result = open_serial_port(port_name); | ||
pthread_create(&serial_reader, NULL, serial_reader_func, NULL); | ||
hard_reset_to_user_code(); | ||
return result; | ||
} | ||
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void sig_handler(int signal) { | ||
if (signal == SIGUSR1) { | ||
if (stopped) { | ||
stopped = 0; | ||
printf("\nSignal received, opening port.\r\n"); | ||
if (init() < 0) { | ||
printf("Cannot open port.\r\n"); | ||
exit(1); | ||
} | ||
} | ||
} else if (signal == SIGUSR2) { | ||
if (!stopped) { | ||
stopped = 1; | ||
printf("\nSignal received, closing port. \r\n"); | ||
pthread_cancel(serial_reader); | ||
close_serial_port(); | ||
} | ||
} | ||
} | ||
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int open_tty(void) | ||
{ | ||
int r, fd; | ||
struct termios term_setting; | ||
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fd = open("/dev/tty", O_RDWR); | ||
if (fd < 0) return -1; | ||
r = tcgetattr(fd, &term_setting); | ||
if (r != 0) return -2; | ||
term_setting.c_oflag |= ( ONLRET ); | ||
term_setting.c_iflag |= (IGNBRK | IGNPAR); | ||
term_setting.c_iflag &= ~(ISTRIP | BRKINT); | ||
term_setting.c_lflag &= ~(ICANON | ISIG | ECHO); | ||
term_setting.c_cflag |= CREAD; | ||
term_setting.c_cc[VMIN] = 1; | ||
term_setting.c_cc[VTIME] = 1; | ||
r = tcsetattr(fd, TCSANOW, &term_setting); | ||
if (r != 0) return -3; | ||
return fd; | ||
} | ||
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void install_sighandler() { | ||
struct sigaction action; | ||
sigemptyset (&action.sa_mask); | ||
sigaddset( &action.sa_mask, SIGUSR1 ); | ||
sigaddset( &action.sa_mask, SIGUSR2 ); | ||
action.sa_flags = 0; | ||
action.sa_handler = sig_handler; | ||
sigaction(SIGUSR1, &action, NULL); | ||
sigaction(SIGUSR2, &action, NULL); | ||
} | ||
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int main(int argc, char** argv) { | ||
if (argc == 2) { | ||
port_name = argv[1]; | ||
} | ||
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printf("Using %s as serial device.\n", port_name); | ||
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char ttybuf[255]; | ||
tty_fd = open_tty(); | ||
if (tty_fd < 0) { | ||
printf("Error opening terminal.\n"); | ||
return(1); | ||
} | ||
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install_sighandler(); | ||
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if (init() < 0) { | ||
printf("Cannot open port.\r\n"); | ||
exit(1); | ||
} | ||
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while (1) { | ||
int n = read(tty_fd, ttybuf, sizeof(ttybuf)); | ||
int i; | ||
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/* check for 0x3 (ctrl-c), clean exit */ | ||
for (i = 0; i < n; i++) { | ||
if (ttybuf[i] == 0x3) { | ||
if (i > 0) { | ||
write_serial_port(ttybuf, i); | ||
} | ||
close_serial_port(); | ||
system("tset -c"); | ||
return 0; | ||
} | ||
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} | ||
write_serial_port(ttybuf,n); | ||
} | ||
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close_serial_port(); | ||
return 0; | ||
} | ||
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#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <unistd.h> | ||
#include <string.h> | ||
#include <ctype.h> | ||
#include <sys/types.h> | ||
#include <sys/stat.h> | ||
#include <fcntl.h> | ||
#include <termios.h> | ||
#include <sys/ioctl.h> | ||
#include <signal.h> | ||
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#include "serial.h" | ||
#include "pthread.h" | ||
#include "download.h" | ||
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int tty_fd; | ||
int stopped = 0; | ||
char* port_name = "/dev/ttyUSB1"; | ||
pthread_t serial_reader; | ||
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void* serial_reader_func(void* arg) { | ||
unsigned char buf[255]; | ||
while(1) { | ||
int n = read_serial_port(buf, sizeof(buf)); | ||
if (n > 0) { | ||
write(tty_fd, buf, n); | ||
} | ||
} | ||
} | ||
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int init() { | ||
int result = open_serial_port(port_name); | ||
pthread_create(&serial_reader, NULL, serial_reader_func, NULL); | ||
hard_reset_to_user_code(); | ||
return result; | ||
} | ||
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struct termios old_term_setting; | ||
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void close_tty() { | ||
tcsetattr(tty_fd, TCSANOW, &old_term_setting); | ||
} | ||
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void sig_handler(int signal) { | ||
if (signal == SIGUSR1) { | ||
if (stopped) { | ||
stopped = 0; | ||
printf("\nSignal received, opening port.\r\n"); | ||
if (init() < 0) { | ||
printf("Cannot open port.\r\n"); | ||
close_tty(); | ||
exit(1); | ||
} | ||
} | ||
} else if (signal == SIGUSR2) { | ||
if (!stopped) { | ||
stopped = 1; | ||
printf("\nSignal received, closing port. \r\n"); | ||
pthread_cancel(serial_reader); | ||
close_serial_port(); | ||
} | ||
} else if (signal == SIGINT) { | ||
printf("SIGINT received, exiting...\n"); | ||
pthread_cancel(serial_reader); | ||
close_serial_port(); | ||
close_tty(); | ||
exit(0); | ||
} | ||
} | ||
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int open_tty(void) | ||
{ | ||
int r, fd; | ||
struct termios term_setting; | ||
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fd = open("/dev/tty", O_RDWR); | ||
if (fd < 0) return -1; | ||
r = tcgetattr(fd, &term_setting); | ||
if (r != 0) return -2; | ||
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old_term_setting = term_setting; | ||
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term_setting.c_oflag |= ( ONLRET ); | ||
term_setting.c_iflag |= (/*IGNBRK |*/ BRKINT | IGNPAR); | ||
term_setting.c_iflag &= ~(ISTRIP); | ||
term_setting.c_lflag &= ~(ICANON |/* ISIG |*/ ECHO); | ||
term_setting.c_lflag |= ( ISIG ); | ||
term_setting.c_cflag |= CREAD; | ||
term_setting.c_cc[VMIN] = 1; | ||
term_setting.c_cc[VTIME] = 1; | ||
r = tcsetattr(fd, TCSANOW, &term_setting); | ||
if (r != 0) return -3; | ||
return fd; | ||
} | ||
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void install_sighandler() { | ||
struct sigaction action; | ||
sigemptyset (&action.sa_mask); | ||
sigaddset( &action.sa_mask, SIGINT ); | ||
sigaddset( &action.sa_mask, SIGUSR1 ); | ||
sigaddset( &action.sa_mask, SIGUSR2 ); | ||
action.sa_flags = 0; | ||
action.sa_handler = sig_handler; | ||
sigaction(SIGINT, &action, NULL); | ||
sigaction(SIGUSR1, &action, NULL); | ||
sigaction(SIGUSR2, &action, NULL); | ||
} | ||
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int main(int argc, char** argv) { | ||
if (argc == 2) { | ||
port_name = argv[1]; | ||
} | ||
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printf("Using %s as serial device.\n", port_name); | ||
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char ttybuf[255]; | ||
tty_fd = open_tty(); | ||
if (tty_fd < 0) { | ||
printf("Error opening terminal.\n"); | ||
return(1); | ||
} | ||
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install_sighandler(); | ||
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if (init() < 0) { | ||
printf("Cannot open port.\r\n"); | ||
exit(1); | ||
} | ||
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while (1) { | ||
int n = read(tty_fd, ttybuf, sizeof(ttybuf)); | ||
int i; | ||
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/* check for 0x3 (ctrl-c), clean exit */ | ||
for (i = 0; i < n; i++) { | ||
if (ttybuf[i] == 0x3) { | ||
if (i > 0) { | ||
write_serial_port(ttybuf, i); | ||
} | ||
close_serial_port(); | ||
close_tty(); | ||
system("tset -c"); | ||
return 0; | ||
} | ||
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} | ||
write_serial_port(ttybuf,n); | ||
} | ||
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close_tty(); | ||
close_serial_port(); | ||
return 0; | ||
} | ||
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