Add Weather_chk

Auxiliary_utils/Weather_chk/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.0)
+set(PROJ chkweather)
+set(MINOR_VERSION "1")
+set(MID_VERSION "0")
+set(MAJOR_VERSION "0")
+set(VERSION "${MAJOR_VERSION}.${MID_VERSION}.${MINOR_VERSION}")
+
+project(${PROJ} VERSION ${PROJ_VERSION} LANGUAGES C)
+#enable_language(C)
+
+message("VER: ${VERSION}")
+
+# default flags
+set(CMAKE_C_FLAGS_RELEASE "")
+set(CMAKE_C_FLAGS_DEBUG "")
+set(CMAKE_C_FLAGS "-O2 -std=gnu99")
+
+set(CMAKE_COLOR_MAKEFILE ON)
+
+# here is one of two variants: all .c in directory or .c files in list
+aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR} SOURCES)
+
+# cmake -DDEBUG=1 -> debugging
+if(DEFINED EBUG)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wextra -Wall -Werror -W")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra -Wall -Werror -W")
+    set(CMAKE_BUILD_TYPE DEBUG)
+    set(CMAKE_VERBOSE_MAKEFILE "ON")
+    add_definitions(-DEBUG)
+else()
+    set(CMAKE_BUILD_TYPE RELEASE)
+endif()
+
+###### pkgconfig ######
+# pkg-config modules (for pkg-check-modules)
+set(MODULES usefull_macros)
+
+# find packages:
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(${PROJ} REQUIRED ${MODULES})
+
+###### additional flags ######
+#list(APPEND ${PROJ}_LIBRARIES "-lfftw3_threads")
+
+# change wrong behaviour with install prefix
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT AND CMAKE_INSTALL_PREFIX MATCHES "/usr/local")
+else()
+    message("Change default install path to /usr/local")
+    set(CMAKE_INSTALL_PREFIX "/usr/local")
+endif()
+message("Install dir prefix: ${CMAKE_INSTALL_PREFIX}")
+
+# exe file
+add_executable(${PROJ} ${SOURCES})
+# -I
+include_directories(${${PROJ}_INCLUDE_DIRS})
+# -L
+link_directories(${${PROJ}_LIBRARY_DIRS})
+# -D
+add_definitions(${CFLAGS} -DLOCALEDIR=\"${LOCALEDIR}\"
+        -DPACKAGE_VERSION=\"${VERSION}\" -DGETTEXT_PACKAGE=\"${PROJ}\"
+        -DMINOR_VERSION=\"${MINOR_VERSION}\" -DMID_VERSION=\"${MID_VERSION}\"
+        -DMAJOR_VERSION=\"${MAJOR_VESION}\")
+
+# -l
+target_link_libraries(${PROJ} ${${PROJ}_LIBRARIES} -lm)
+
+# Installation of the program
+INSTALL(TARGETS ${PROJ} DESTINATION "bin")

Auxiliary_utils/Weather_chk/Readme.md

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+Check meteostation parameters
+===========================
+
+    Usage: chkweather [args]
+    
+            Where args are:
+    
+      -d, --devname=arg   serial device name
+      -h, --help          show this help
+      -s, --speed=arg     baudrate (default: 9600)
+
+
+Output: 
+Rain=0/1
+Clouds=0/1
+
+Return value:
+0 if no rain, 1 if there's rainy

Auxiliary_utils/Weather_chk/cmdlnopts.c

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+/*
+ * This file is part of the ttyterm project.
+ * Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * 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 <assert.h> // assert
+#include <stdio.h>  // printf
+#include <string.h> // memcpy
+#include <usefull_macros.h>
+#include "cmdlnopts.h"
+
+/*
+ * here are global parameters initialisation
+ */
+static int help;
+static glob_pars  G;
+
+//            DEFAULTS
+// default global parameters
+glob_pars const Gdefault = {
+    .speed = 9600,
+    .ttyname = "/dev/ttyUSB0",
+};
+
+/*
+ * Define command line options by filling structure:
+ *  name    has_arg flag    val     type        argptr          help
+*/
+static myoption cmdlnopts[] = {
+    // set 1 to param despite of its repeating number:
+    {"help",    NO_ARGS,    NULL,   'h',    arg_int,    APTR(&help),        _("show this help")},
+    {"speed",   NEED_ARG,   NULL,   's',    arg_int,    APTR(&G.speed),     _("baudrate (default: 9600)")},
+    {"devname", NEED_ARG,   NULL,   'd',    arg_string, APTR(&G.ttyname),   _("serial device name")},
+    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
+ */
+glob_pars *parse_args(int argc, char **argv){
+    void *ptr = memcpy(&G, &Gdefault, sizeof(G)); assert(ptr);
+    // format of help: "Usage: progname [args]\n"
+    change_helpstring(_("Usage: %s [args]\n\n\tWhere args are:\n"));
+    // parse arguments
+    parseargs(&argc, &argv, cmdlnopts);
+    if(help) showhelp(-1, cmdlnopts);
+    if(argc > 0){
+        WARNX("Wrong arguments:\n");
+        for(int i = 0; i < argc; i++)
+            fprintf(stderr, "\t%s\n", argv[i]);
+        signals(9);
+    }
+    return &G;
+}
+

Auxiliary_utils/Weather_chk/cmdlnopts.h

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+/*
+ * This file is part of the ttyterm project.
+ * Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * 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/>.
+ */
+
+#pragma once
+#ifndef CMDLNOPTS_H__
+#define CMDLNOPTS_H__
+
+/*
+ * here are some typedef's for global data
+ */
+typedef struct{
+    int speed;          // baudrate
+    char *ttyname;      // device name
+} glob_pars;
+
+
+// default & global parameters
+extern glob_pars const Gdefault;
+
+glob_pars *parse_args(int argc, char **argv);
+#endif // CMDLNOPTS_H__

Auxiliary_utils/Weather_chk/main.c

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+/*
+ * This file is part of the ttyterm project.
+ * Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * 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 <ctype.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h> // strcmp
+#include <usefull_macros.h>
+#include "cmdlnopts.h"
+
+#define BUFLEN 2048
+
+/**
+ * @brief getpar - get parameter value
+ * @param string (i) - string where to search
+ * @param Val (o)    - value found
+ * @param Name       - parameter name
+ * @return 0 if found
+ */
+static int getpar(char *string, double *Val, char *Name){
+    char *p = strstr(string, Name);
+    if(!p) return 1;
+    p += strlen(Name);
+    DBG("search %s: %s", Name, p);
+    if(!Val) return 0;
+    char *endptr;
+    *Val = strtod(p, &endptr);
+    DBG("eptr=%s, val=%g", endptr, *Val);
+    if(endptr == string){
+        WARNX("Double value not found");
+        return 2;
+    }
+    return 0;
+}
+
+int main(int argc, char **argv){
+    glob_pars *G = NULL; // default parameters see in cmdlnopts.c
+    initial_setup();
+    G = parse_args(argc, argv);
+    TTY_descr *dev = new_tty(G->ttyname, G->speed, 64);
+    if(!dev || !(dev = tty_open(dev, 1))) return 1; // open exclusively
+    while(read_tty(dev)); // clear buffer
+    if(write_tty(dev->comfd, "?U\r\n", 3)) ERR("write_tty()");
+    size_t got, L = 0;
+    char buff[BUFLEN], *ptr = buff;
+    double t0 = dtime();
+    while(dtime() - t0 < 1.){ // timeout - 1s
+        got = read_tty(dev);
+        if(got == 0) continue;
+        t0 = dtime();
+        L += got;
+        if(BUFLEN > L){
+            strncpy(ptr, dev->buf, dev->buflen);
+            ptr += got;
+        }else break;
+    }
+    buff[L] = 0;
+    if(L == 0) ERRX("Got nothing from TTY");
+    if(strncmp(buff, "<?U>", 4)) ERRX("Wrong answer: %s", buff);
+    ptr = &buff[4];
+    for(size_t i = 4; i < L; ++i){
+        char c = *ptr;
+        if(isspace(c)) ++ptr;
+    }
+    char *eol = strchr(ptr, '\n');
+    if(eol) *eol = 0;
+    DBG("Now: %s\n", ptr);
+    double rain = 1., clouds = 1.;
+    if(!getpar(ptr, &rain, "RT")) printf("Rain=%g\n", rain);
+    if(!getpar(ptr, &clouds, "WK")) printf("Clouds=%g\n", clouds);
+    close_tty(&dev);
+    if(rain > 0.1) return 1;
+    return 0;
+}