add fifo/lifo

examples/CMakeLists.txt

@@ -8,3 +8,4 @@ link_libraries(usefull_macros)
 # exe list
 add_executable(helloworld helloworld.c)
 add_executable(options options.c cmdlnopts.c)
+add_executable(fifo fifo.c)

examples/cmdlnopts.c

@@ -32,15 +32,15 @@
 int help;
 glob_pars  G;
 
-#define DEFAULT_COMDEV  "/dev/ttyUSB0"
 // default PID filename:
 #define DEFAULT_PIDFILE "/tmp/testcmdlnopts.pid"
 
 //            DEFAULTS
 // default global parameters
 glob_pars const Gdefault = {
-    .device = DEFAULT_COMDEV,
+    .device = NULL,
     .pidfile = DEFAULT_PIDFILE,
+    .speed = 9600,
     .logfile = NULL // don't save logs
 };
 
@@ -51,7 +51,8 @@ glob_pars const Gdefault = {
 myoption cmdlnopts[] = {
 // common options
     {"help",    NO_ARGS,    NULL,   'h',    arg_int,    APTR(&help),        _("show this help")},
-    {"device",  NEED_ARG,   NULL,   'd',    arg_string, APTR(&G.device),    _("serial device name (default: " DEFAULT_COMDEV ")")},
+    {"device",  NEED_ARG,   NULL,   'd',    arg_string, APTR(&G.device),    _("serial device name")},
+    {"speed",   NEED_ARG,   NULL,   's',    arg_int,    APTR(&G.speed),     _("serial device speed (default: 9600)")},
     {"logfile", NEED_ARG,   NULL,   'l',    arg_string, APTR(&G.logfile),   _("file to save logs")},
     {"pidfile", NEED_ARG,   NULL,   'P',    arg_string, APTR(&G.pidfile),   _("pidfile (default: " DEFAULT_PIDFILE ")")},
    end_option

examples/cmdlnopts.h

@@ -30,6 +30,7 @@ typedef struct{
     char *device;           // serial device name
     char *pidfile;          // name of PID file
     char *logfile;          // logging to this file
+    int speed;              // connection speed
     int rest_pars_num;      // number of rest parameters
     char** rest_pars;       // the rest parameters: array of char*
 } glob_pars;

examples/fifo.c

@@ -0,0 +1,57 @@
+/*
+ * This file is part of the usefull_macros project.
+ * Copyright 2018 Edward V. Emelianov <edward.emelianoff@gmail.com>, <eddy@sao.ru>.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <usefull_macros.h>
+#include <stdio.h>
+
+int main(int argc, char *argv[argc]) {
+    List *f = NULL;
+    printf("Available memory: %luMB\n", get_available_mem()/1024/1024);
+    //initial_setup(); - there's no need for this function if you don't use locale & don't want to have
+    // specific output in non-tty
+    if(argc == 1){
+        green("Usage:\n\t%s args - fill fifo with arguments\n", __progname);
+        return 1;
+    }
+    red("\n\nLIFO example\n");
+    for(int i = 1; i < argc; ++i){
+        if(!list_push(&f, argv[i])) ERR("Allocation error!");
+        green("push to list ");
+        printf("%s\n", argv[i]);
+    }
+    char *d;
+    printf("\n");
+    while(f){
+        d = list_pop(&f);
+        green("pull: ");
+        printf("%s\n", d);
+    }
+    red("\n\nFIFO example\n");
+    for(int i = 1; i < argc; ++i){
+        if(!list_push_tail(&f, argv[i])) ERR("Allocation error!");
+        green("push to list ");
+        printf("%s\n", argv[i]);
+    }
+    printf("\n");
+    while(f){
+        d = list_pop(&f);
+        green("pull: ");
+        printf("%s\n", d);
+        // after last usage we should FREE data, but here it is parameter of main()
+    }
+    return 0;
+}

examples/options.c

@@ -16,12 +16,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <usefull_macros.h>
 #include <signal.h>         // signal
 #include <stdlib.h>         // exit, free
 #include <stdio.h>          // printf
 #include <string.h>         // strdup
 #include <unistd.h>         // sleep
+#include <usefull_macros.h>
 #include "cmdlnopts.h"
 
 /**
@@ -34,15 +34,22 @@
  * The `cmdlnopts.[hc]` are intrinsic files of this demo.
  */
 
+TTY_descr *dev = NULL; // shoul be global to restore if die
+glob_pars *GP = NULL;  // for GP->pidfile need in `signals`
+
 /**
  * We REDEFINE the default WEAK function of signal processing
  */
 void signals(int sig){
-    signal(sig, SIG_IGN);
-    restore_console();
-    restore_tty();
-    DBG("Get signal %d, quit.\n", sig);
+    if(sig){
+        signal(sig, SIG_IGN);
+        DBG("Get signal %d, quit.\n", sig);
+    }
     putlog("Exit with status %d", sig);
+    if(GP->pidfile) // remove unnesessary PID file
+        unlink(GP->pidfile);
+    restore_console();
+    close_tty(&dev);
     exit(sig);
 }
 
@@ -53,7 +60,7 @@ void iffound_default(pid_t pid){
 int main(int argc, char *argv[]){
     initial_setup();
     char *self = strdup(argv[0]);
-    glob_pars *GP = parse_args(argc, argv);
+    GP = parse_args(argc, argv);
     if(GP->rest_pars_num){
         printf("%d extra options:\n", GP->rest_pars_num);
         for(int i = 0; i < GP->rest_pars_num; ++i)
@@ -69,13 +76,32 @@ int main(int argc, char *argv[]){
     if(GP->logfile) openlogfile(GP->logfile);
     setup_con();
     putlog(("Start application..."));
-    ; // main stuff goes here
-    green("Now I will sleep for 10 seconds. Do whatever you want.\n");
-    sleep(10);
-    ; // clean everything
-    if(GP->pidfile) // remove unnesessary PID file
-        unlink(GP->pidfile);
-    restore_console();
-    restore_tty();
+    if(GP->rest_pars_num){
+        for(int i = 0; i < GP->rest_pars_num; ++i)
+            printf("Extra argument: %s\n", GP->rest_pars[i]);
+    }
+    if(GP->device){
+        putlog("Try to open serial %s", GP->device);
+        dev = tty_open(GP->device, GP->speed, 256);
+        if(!dev){
+            putlog("Can't open %s with speed %d. Exit.", GP->device, GP->speed);
+            signals(0);
+        }
+    }
+    // main stuff goes here
+    long seed = throw_random_seed();
+    green("Now I will sleep for 10 seconds. Do whatever you want. Random seed: %ld\n", seed);
+    double t0 = dtime();
+    while(dtime() - t0 < 10.){ // read data from port and print in into terminal
+        if(dev){
+            if(read_tty(dev)){
+                printf("Data from port: %s\n", dev->buf);
+            }
+            char ch = read_console();
+            if(ch) write_tty(dev->comfd, &ch, 1);
+        }
+    }
+    // clean everything
+    signals(0);
     return 0;
 }