while true

main.c

@@ -1,10 +1,57 @@
 #include "./GODEX500/Godex500.h"
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+
 #define SerialDevice "/dev/ttyUSB0"
-int main() {
-    const char* id = "2E000504";
-    const char* model = "LS3";
-    int serial_port = GODEX500_setup_serial(SerialDevice);
-    GODEX500_print_label(serial_port, id, model);
-    close(serial_port);
+
+static int serial_port = -1;
+
+static void cleanup(int signum)
+{
+    (void)signum;
+    if (serial_port >= 0)
+        close(serial_port);
+    write(STDOUT_FILENO, "\nПорт закрыт. \n", 23);
+    _exit(0);
+}
+
+static void install_handler(int signo)
+{
+    struct sigaction sa = {
+        .sa_handler = cleanup,
+        .sa_flags   = SA_RESTART 
+    };
+    sigemptyset(&sa.sa_mask);
+    sigaction(signo, &sa, NULL);
+}
+
+int main(void)
+{
+
+    install_handler(SIGINT);
+    install_handler(SIGTERM);  
+    install_handler(SIGHUP);
+    install_handler(SIGQUIT);
+
+    const char *model = "LS3";
+    char id[256];
+
+    serial_port = GODEX500_setup_serial(SerialDevice);
+    if (serial_port < 0) {
+        perror("serial");
+        return 1;
+    }
+
+    puts("Введите ID (Ctrl+D, Ctrl+C или kill для выхода):");
+    while (fgets(id, sizeof id, stdin)) {
+        id[strcspn(id, "\n")] = '\0';
+        if (*id == '\0') continue;
+        GODEX500_print_label(serial_port, id, model);
+        printf("Печать %s завершена\n", id);
+    }
+
+    cleanup(0);
     return 0;
 }