--- a/thermometers/thermometers.c Thu Sep 17 20:54:34 2015 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,317 +0,0 @@
-/*****************************************************************************
- * Copyright (C) 2014
- *
- * Michiel Broek <mbroek at mbse dot eu>
- *
- * This file is part of the mbsePi-apps
- *
- * This 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, or (at your option) any
- * later version.
- *
- * mbsePi-apps 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 EC-65K; see the file COPYING. If not, write to the Free
- * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *****************************************************************************/
-
-#include "thermometers.h"
-
-
-static int my_shutdown = FALSE;
-static pid_t pgrp, mypid;
-
-extern int debug;
-extern sys_config Config;
-#ifdef HAVE_WIRINGPI_H
-extern int lcdHandle;
-#endif
-
-int server(void);
-void help(void);
-void die(int);
-
-
-void help(void)
-{
- fprintf(stdout, "mbsePi-apps thermometers v%s starting\n\n", VERSION);
- fprintf(stdout, "Usage: thermomeneters [-d] [-h]\n");
- fprintf(stdout, " -d --debug Debug and run in foreground\n");
- fprintf(stdout, " -h --help Display this help\n");
-}
-
-
-
-void die(int onsig)
-{
- switch (onsig) {
- case SIGHUP: syslog(LOG_NOTICE, "Got SIGHUP, shutting down");
- break;
- case SIGINT: syslog(LOG_NOTICE, "Keyboard interrupt, shutting down");
- break;
- case SIGTERM: syslog(LOG_NOTICE, "Got SIGTERM, shutting down");
- break;
- default: syslog(LOG_NOTICE, "die() on signal %d", onsig);
- }
-
- my_shutdown = TRUE;
-}
-
-
-
-#ifdef HAVE_WIRINGPI_H
-void stopLCD(void)
-{
- lcdClear(lcdHandle);
- setBacklight(0);
-}
-#endif
-
-
-
-int main(int argc, char *argv[])
-{
- int rc, c, i;
- pid_t frk;
-#ifdef HAVE_WIRINGPI_H
- char buf[80];
-#endif
-
- while (1) {
- int option_index = 0;
- static struct option long_options[] = {
- {"debug", 0, 0, 'c'},
- {"help", 0, 0, 'h'},
- {0, 0, 0, 0}
- };
-
- c = getopt_long(argc, argv, "dh", long_options, &option_index);
- if (c == -1)
- break;
-
- switch (c) {
- case 'd': debug = TRUE;
- break;
- case 'h': help();
- return 1;
- }
- }
-
- openlog("thermometers", LOG_PID|LOG_CONS|LOG_NOWAIT, LOG_USER);
- syslog(LOG_NOTICE, "mbsePi-apps thermometers v%s starting", VERSION);
- if (debug)
- fprintf(stdout, "mbsePi-apps thermometers v%s starting\n", VERSION);
-
- if (rdconfig((char *)"thermometers.conf")) {
- fprintf(stderr, "Error reading configuration\n");
- syslog(LOG_NOTICE, "Error reading configuration, halted");
- return 1;
- }
-
- /*
- * Catch all the signals we can, and ignore the rest. Note that SIGKILL can't be ignored
- * but that's live. This daemon should only be stopped by SIGTERM.
- * Don't catch SIGCHLD.
- */
- for (i = 0; i < NSIG; i++) {
- if ((i != SIGCHLD) && (i != SIGKILL) && (i != SIGSTOP))
- signal(i, (void (*))die);
- }
-
-#ifdef HAVE_WIRINGPI_H
-
- if (wiringPiSetup () )
- return 1;
-
- if ((rc = initLCD (16, 2))) {
- fprintf(stderr, "Cannot initialize LCD display, rc=%d\n", rc);
- return 1;
- }
-
- lcdPosition(lcdHandle, 0, 0);
- lcdPuts(lcdHandle, "Thermometers");
- lcdPosition(lcdHandle, 0, 1);
- sprintf(buf, "Version %s", VERSION);
- lcdPuts(lcdHandle, buf);
-#endif
-
- if (debug) {
- /*
- * For debugging run in foreground.
- */
- rc = server();
- } else {
- /*
- * Server initialization is complete. Now we can fork the
- * daemon and return to the user. We need to do a setpgrp
- * so that the daemon will no longer be assosiated with the
- * users control terminal. This is done before the fork, so
- * that the child will not be a process group leader. Otherwise,
- * if the child were to open a terminal, it would become
- * associated with that terminal as its control terminal.
- */
- if ((pgrp = setpgid(0, 0)) == -1) {
- syslog(LOG_NOTICE, "setpgpid failed");
- }
-
- frk = fork();
- switch (frk) {
- case -1:
- syslog(LOG_NOTICE, "Daemon fork failed: %s", strerror(errno));
- syslog(LOG_NOTICE, "Finished, rc=1");
-#ifdef HAVE_WIRINGPI_H
- stopLCD();
-#endif
- exit(1);
- case 0: /*
- * Run the daemon
- */
- fclose(stdin);
- if (open("/dev/null", O_RDONLY) != 0) {
- syslog(LOG_NOTICE, "Reopen of stdin to /dev/null failed");
- _exit(2);
- }
- fclose(stdout);
- if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 1) {
- syslog(LOG_NOTICE, "Reopen of stdout to /dev/null failed");
- _exit(2);
- }
- fclose(stderr);
- if (open("/dev/null", O_WRONLY | O_APPEND | O_CREAT,0600) != 2) {
- syslog(LOG_NOTICE, "Reopen of stderr to /dev/null failed");
- _exit(2);
- }
- mypid = getpid();
- rc = server();
- break;
- /* Not reached */
- default:
- /*
- * Here we detach this process and let the child
- * run the deamon process.
- */
- syslog(LOG_NOTICE, "Starting daemon with pid %d", frk);
- exit(0);
- }
- }
-
- syslog(LOG_NOTICE, "Finished, rc=%d", rc);
- return rc;
-}
-
-
-
-int server(void)
-{
- int temp, rc = 0;
-#ifdef HAVE_WIRINGPI_H
- char buf[1024];
- int lcdupdate;
-#endif
- w1_therm *tmp1;
- char *device, line[60], *p = NULL;
- FILE *fp;
-
- if (debug)
- fprintf(stdout, (char *)"Enter loop\n");
-
- do {
-#ifdef HAVE_WIRINGPI_H
- lcdupdate = FALSE;
-#endif
-
- /*
- * Here send our 1-wire sensors values
- */
- for (tmp1 = Config.w1therms; tmp1; tmp1 = tmp1->next) {
-
- /*
- * Build path and alias topic
- */
- device = xstrcpy((char *)"/sys/bus/w1/devices/");
- device = xstrcat(device, tmp1->master);
- device = xstrcat(device, (char *)"/");
- device = xstrcat(device, tmp1->name);
- device = xstrcat(device, (char *)"/w1_slave");
-
- /*
- * Read sensor data
- */
- if ((fp = fopen(device, "r"))) {
- /*
- * The output looks like:
- * 72 01 4b 46 7f ff 0e 10 57 : crc=57 YES
- * 72 01 4b 46 7f ff 0e 10 57 t=23125
- */
- fgets(line, 50, fp);
- line[strlen(line)-1] = '\0';
- if ((line[36] == 'Y') && (line[37] == 'E')) {
- /*
- * CRC is Ok, continue
- */
- fgets(line, 50, fp);
- line[strlen(line)-1] = '\0';
- strtok(line, (char *)"=");
- p = strtok(NULL, (char *)"=");
- rc = sscanf(p, "%d", &temp);
- if ((rc == 1) && (tmp1->lastval != temp)) {
- tmp1->lastval = temp;
-#ifdef HAVE_WIRINGPI_H
- lcdupdate = TRUE;
-#endif
- }
- } else {
- syslog(LOG_NOTICE, "sensor %s/%s CRC error", tmp1->master, tmp1->name);
- }
- fclose(fp);
- tmp1->present = 1;
- } else {
- tmp1->present = 0;
- if (debug)
- printf("sensor %s is missing\n", tmp1->name);
- }
-
- free(device);
- device = NULL;
- }
-
-#ifdef HAVE_WIRINGPI_H
- if (lcdupdate) {
- lcdPosition(lcdHandle, 0, 0);
- tmp1 = Config.w1therms;
- snprintf(buf, 16, "%5.1f %cC %s ", tmp1->lastval / 1000.0, 0xdf, tmp1->alias);
- lcdPuts(lcdHandle, buf);
- tmp1 = tmp1->next;
- lcdPosition(lcdHandle, 0, 1);
- snprintf(buf, 16, "%5.1f %cC %s ", tmp1->lastval / 1000.0, 0xdf, tmp1->alias);
- lcdPuts(lcdHandle, buf);
- }
-#endif
-
- if (my_shutdown) {
-#ifdef HAVE_WIRINGPI_H
- lcdClear(lcdHandle);
- lcdPosition(lcdHandle, 0, 0);
- lcdPuts(lcdHandle, "Shuting down ...");
-#endif
- }
-
- usleep(100000);
-
- } while (! my_shutdown);
-
- if (debug)
- fprintf(stdout, (char *)"Out of loop\n");
-
-#ifdef HAVE_WIRINGPI_H
- stopLCD();
-#endif
-
- return rc;
-}
-