add BTA_modbusmeteo

2026-08-15 04:29:24 +03:00 · 2022-06-08 17:02:43 +03:00
parent f870b4d036
commit db1c4eb8b6
15 changed files with 2156 additions and 0 deletions
--- a/BTA_modbusmeteo/main.c
+++ b/BTA_modbusmeteo/main.c
@@ -0,0 +1,150 @@
+/*
+ * This file is part of the bta_meteo_modbus project.
+ * Copyright 2022 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 <sys/prctl.h> // prctl
+#include <sys/wait.h>  // wait
+#include <time.h>
+
+#include "usefull_macros.h"
+#include "bta_shdata.h"
+#include "bta_meteo_modbus.h"
+
+int gotsegm = 0; // used also in bta_meteo_modbus.c
+static pid_t childpid = 0;
+
+void clear_flags(){
+    WARNX("Clear flags");
+    LOG("Clear flags");
+    if(!gotsegm) return;
+    if(MeteoMode & NET_HMD){ // humidity now isn't from net
+       MeteoMode &= ~NET_HMD;
+       if(MeteoMode & SENSOR_HMD)
+           MeteoMode &= ~SENSOR_HMD;
+    }
+    if(MeteoMode & NET_WND){ // wind
+       MeteoMode &= ~NET_WND;
+       if(MeteoMode & SENSOR_WND)
+           MeteoMode &= ~SENSOR_WND;
+    }
+    if(MeteoMode & NET_B){ // pressure
+       MeteoMode &= ~NET_B;
+       if(MeteoMode & SENSOR_B)
+           MeteoMode &= ~SENSOR_B;
+    }
+    if(MeteoMode & NET_T1){ // ext. temperature
+       MeteoMode &= ~NET_T1;
+       if(MeteoMode & SENSOR_T1)
+           MeteoMode &= ~SENSOR_T1;
+    }
+}
+
+void signals(int sig){
+    signal(sig, SIG_IGN);
+    switch(sig){
+        default:
+        case SIGHUP :
+             LOG("%s - Ignore ...", strsignal(sig));
+             fflush(stderr);
+             signal(sig, signals);
+             return;
+        case SIGINT :
+        case SIGPIPE:
+        case SIGQUIT:
+        case SIGFPE :
+        case SIGSEGV:
+        case SIGTERM:
+             signal(SIGALRM, SIG_IGN);
+             LOG("%s - Stop!", strsignal(sig));
+             if(childpid){ // master process
+                 clear_flags();
+             }
+             exit(sig);
+    }
+}
+
+int main(int argc, char *argv[]){
+    setenv("LC_MESSAGES", "C", 1);
+    initial_setup();
+    if(argc == 2){
+        printf("Log file: %s\n", argv[1]);
+        Cl_createlog(argv[1]);
+    }
+    signal(SIGHUP, signals);
+    signal(SIGINT, signals);
+    signal(SIGQUIT,signals);
+    signal(SIGFPE, signals);
+    signal(SIGPIPE,signals);
+    signal(SIGSEGV,signals);
+    signal(SIGTERM,signals);
+
+    LOG("\nStarted\n");
+
+    #ifndef EBUG
+    if(daemon(1, 0)){
+        ERR("daemon()");
+    }
+    while(1){ // guard for dead processes
+        pid_t childpid = fork();
+        if(childpid){
+            LOG("create child with PID %d", childpid);
+            wait(NULL);
+            LOG("child %d died\n", childpid);
+            sleep(1);
+        }else{
+            prctl(PR_SET_PDEATHSIG, SIGTERM); // send SIGTERM to child when parent dies
+            break; // go out to normal functional
+        }
+    }
+    #endif
+
+    if(!connect2tty()){
+        ERRX("Can't open TTY device");
+        return 1; // never reached
+    }
+
+    time_t tlast = time(NULL);
+    int errlogged = FALSE;
+    while(1){
+        if(!gotsegm){
+            sdat.mode |= 0200;
+            sdat.atflag = 0;
+            gotsegm = get_shm_block(&sdat, ClientSide);
+            if(!gotsegm){
+                LOG("Can't find SHM segment");
+            }else get_cmd_queue(&ocmd, ClientSide);
+        }
+        if(time(NULL) - tlast > 60){ // no signal for 5 minutes - clear flags
+            if(!errlogged){
+                LOG("5 minutes - no signal!");
+                errlogged = TRUE;
+            }
+            tlast = time(NULL);
+            clear_flags(); // return to Z1000 meteo
+        }
+        params_ans a = check_meteo_params();
+        if(a == ANS_LOSTCONN){
+            LOG("Lost connection with device, reconnect!");
+            return 1;
+        }
+        if(a == ANS_OK){
+            errlogged = FALSE;
+            tlast = time(NULL);
+        }
+    }
+    return 0;
+}