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add simplest modbus relay management

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Edward Emelianov
2025-05-22 17:52:09 +03:00
parent 7f2ff12c90
commit ce15889295
12 changed files with 509 additions and 0 deletions
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modbus_relay/cmdlnopts.c Normal file
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/* geany_encoding=koi8-r
* cmdlnopts.c - the only function that parse cmdln args and returns glob parameters
*
* Copyright 2013 Edward V. Emelianoff <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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <assert.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include "cmdlnopts.h"
#include "usefull_macros.h"
/*
* here are global parameters initialisation
*/
static int help;
sl_loglevel_e verblvl = LOGLEVEL_WARN;
glob_pars GP = {
.baudrate = 9600,
.device = "/dev/ttyUSB0",
.nodenum = 1,
};
/*
* Define command line options by filling structure:
* name has_arg flag val type argptr help
*/
static sl_option_t cmdlnopts[] = {
{"help", NO_ARGS, NULL, 'h', arg_int, APTR(&help), "show this help"},
{"verbose", NO_ARGS, NULL, 'v', arg_none, APTR(&GP.verbose), "verbose level for (each `-v` increase it)"},
{"logfile", NEED_ARG, NULL, 'l', arg_string, APTR(&GP.logfile), "logging file name"},
{"baudrate",NEED_ARG, NULL, 'b', arg_int, APTR(&GP.baudrate), "interface baudrate (default: 9600)"},
{"device", NEED_ARG, NULL, 'd', arg_string, APTR(&GP.device), "serial device path (default: /dev/ttyUSB0)"},
{"set", MULT_PAR, NULL, 's', arg_int, APTR(&GP.setrelay), "set Nth relay"},
{"reset", MULT_PAR, NULL, 'r', arg_int, APTR(&GP.resetrelay),"reset Nth relay"},
{"input", MULT_PAR, NULL, 'i', arg_int, APTR(&GP.getinput), "read Nth input"},
{"get", MULT_PAR, NULL, 'g', arg_int, APTR(&GP.getrelay), "reat Nth relay"},
{"setall", NO_ARGS, NULL, 'S', arg_int, APTR(&GP.setall), "set all relays"},
{"resetall",NO_ARGS, NULL, 'R', arg_int, APTR(&GP.resetall), "reset all relays"},
{"node", NEED_ARG, NULL, 'n', arg_int, APTR(&GP.nodenum), "node number (default: 1)"},
{"readN", NO_ARGS, NULL, 0, arg_int, APTR(&GP.readn), "read node number"},
{"setN", NEED_ARG, NULL, 0, arg_int, APTR(&GP.setn), "change node number"},
end_option
};
/**
* Parse command line options and return dynamically allocated structure
* to global parameters
* @param argc - copy of argc from main
* @param argv - copy of argv from main
* @return allocated structure with global parameters
*/
void parse_args(int argc, char **argv){
size_t hlen = 1024;
char helpstring[1024], *hptr = helpstring;
snprintf(hptr, hlen, "Usage: %%s [args]\n\n\tWhere args are:\n");
// format of help: "Usage: progname [args]\n"
sl_helpstring(helpstring);
// parse arguments
sl_parseargs(&argc, &argv, cmdlnopts);
if(help) sl_showhelp(-1, cmdlnopts);
if(argc > 0) WARNX("Omit %d unexpected arguments", argc);
}
void verbose(sl_loglevel_e lvl, const char *fmt, ...){
if(lvl > verblvl) return;
va_list ar;
va_start(ar, fmt);
vprintf(fmt, ar);
va_end(ar);
fflush(stdout);
}