Merged in juniskane/apps_upstream/examples_alarm_pr (pull request #112)
examples/alarm: add options for reading alarm value and canceling it Approved-by: Gregory Nutt <gnutt@nuttx.org>
This commit is contained in:
Juha Niskanen
Gregory Nutt
parent
4bff47a80f
commit
63e086d1f7
@ -55,7 +55,7 @@
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****************************************************************************/
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static bool g_alarm_daemon_started;
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static pid_t g_alarm_daeon_pid;
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static pid_t g_alarm_daemon_pid;
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static bool g_alarm_received[CONFIG_RTC_NALARMS];
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/****************************************************************************
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@ -162,11 +162,11 @@ static int start_daemon(void)
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{
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if (!g_alarm_daemon_started)
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{
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g_alarm_daeon_pid =
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g_alarm_daemon_pid =
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task_create("alarm_daemon", CONFIG_EXAMPLES_ALARM_PRIORITY,
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CONFIG_EXAMPLES_ALARM_STACKSIZE, alarm_daemon,
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NULL);
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if (g_alarm_daeon_pid < 0)
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if (g_alarm_daemon_pid < 0)
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{
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int errcode = errno;
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fprintf(stderr, "ERROR: Failed to start alarm_daemon: %d\n",
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@ -188,18 +188,16 @@ static int start_daemon(void)
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static void show_usage(FAR const char *progname)
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{
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fprintf(stderr, "USAGE:\n");
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#if CONFIG_RTC_NALARMS > 1
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fprintf(stderr, "\t%s [-a <alarmid>] <seconds>\n", progname);
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fprintf(stderr, "\t%s [-a <alarmid>] [-cr] [<seconds>]\n", progname);
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fprintf(stderr, "Where:\n");
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fprintf(stderr, "\t-a <alarmid>\n");
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fprintf(stderr, "\t\t<alarmid> selects the alarm: 0..%d\n",
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fprintf(stderr, "\t\t<alarmid> selects the alarm: 0..%d (default: 0)\n",
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CONFIG_RTC_NALARMS - 1);
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#else
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fprintf(stderr, "\t%s <seconds>\n", progname);
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fprintf(stderr, "Where:\n");
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#endif
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fprintf(stderr, "\t-c\tCancel previously set alarm\n");
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fprintf(stderr, "\t-r\tRead previously set alarm\n");
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fprintf(stderr, "\t<seconds>\n");
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fprintf(stderr, "\t\tThe number of seconds until the alarm expires.\n");
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fprintf(stderr, "\t\t(only if no -c or -r option given.)\n");
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}
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/****************************************************************************
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@ -216,10 +214,13 @@ int main(int argc, FAR char *argv[])
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int alarm_main(int argc, FAR char *argv[])
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#endif
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{
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struct rtc_setrelative_s setrel;
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unsigned long seconds;
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unsigned long seconds = 0;
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bool badarg = false;
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bool readmode = false;
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bool cancelmode = false;
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bool setmode;
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int opt;
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int alarmid = 0;
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int secndx;
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int fd;
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int ret;
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@ -228,47 +229,74 @@ int alarm_main(int argc, FAR char *argv[])
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ret = start_daemon();
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if (ret < 0)
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{
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fprintf(stderr, "ERROR: Unrecognized option: %s\n", argv[1]);
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return EXIT_FAILURE;
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}
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/* Parse commandline parameters. NOTE: getopt() is not thread safe nor re-entrant.
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* To keep its state proper for the next usage, it is necessary to parse to
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* the end of the line even if an error occurs. If an error occurs, this
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* logic just sets 'badarg' and continues.
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*/
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while ((opt = getopt(argc, argv, ":a:cr")) != ERROR)
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{
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switch (opt)
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{
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case 'a': /* -a: Select alarm id */
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alarmid = strtol(optarg, NULL, 0);
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if (alarmid < 0 || alarmid >= CONFIG_RTC_NALARMS)
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{
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badarg = true;
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}
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break;
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case 'c':
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cancelmode = true;
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break;
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case 'r':
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readmode = true;
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break;
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default:
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fprintf(stderr, "<unknown parameter '-%c'>\n\n", opt);
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/* fall through */
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case '?':
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case ':':
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badarg = true;
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}
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}
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/* Both -r and -c can be given at the same time, setting is exclusive. */
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setmode = !readmode && !cancelmode;
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if (setmode)
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{
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if (optind >= argc)
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{
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badarg = true;
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}
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}
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else if (optind < argc)
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{
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badarg = true;
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}
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if (badarg)
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{
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show_usage(argv[0]);
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return EXIT_FAILURE;
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}
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#if CONFIG_RTC_NALARMS > 1
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/* Check for an optional alarm ID */
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if (argc == 4)
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if (setmode)
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{
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if (strcmp(argv[1], "-a") != 0)
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/* Get the number of seconds until the alarm expiration */
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seconds = strtoul(argv[optind], NULL, 10);
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if (seconds < 1)
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{
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fprintf(stderr, "ERROR: Unrecognized option: %s\n", argv[1]);
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fprintf(stderr, "ERROR: Invalid number of seconds: %lu\n", seconds);
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show_usage(argv[0]);
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return EXIT_FAILURE;
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}
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alarmid = atoi(argv[2]);
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secndx = 3;
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}
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else
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#endif
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if (argc == 2)
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{
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secndx = 1;
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}
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else
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{
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fprintf(stderr, "ERROR: Invalid number of arguments: %d\n", argc - 1);
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show_usage(argv[0]);
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return EXIT_FAILURE;
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}
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/* Get the number of seconds until the alarm expiration */
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seconds = strtoul(argv[secndx], NULL, 10);
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if (seconds < 1)
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{
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fprintf(stderr, "ERROR: Invalid number of seconds: %lu\n", seconds);
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show_usage(argv[0]);
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return EXIT_FAILURE;
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}
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/* Open the RTC driver */
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@ -284,28 +312,112 @@ int alarm_main(int argc, FAR char *argv[])
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return EXIT_FAILURE;
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}
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/* Set the alarm */
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setrel.id = alarmid;
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setrel.signo = CONFIG_EXAMPLES_ALARM_SIGNO;
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setrel.pid = g_alarm_daeon_pid;
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setrel.reltime = (time_t)seconds;
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setrel.sigvalue.sival_int = alarmid;
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ret = ioctl(fd, RTC_SET_RELATIVE, (unsigned long)((uintptr_t)&setrel));
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if (ret < 0)
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if (readmode)
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{
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int errcode = errno;
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struct rtc_rdalarm_s rd = { 0 };
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long timeleft;
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time_t now;
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fprintf(stderr, "ERROR: RTC_SET_RELATIVE ioctl failed: %d\n",
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errcode);
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rd.id = alarmid;
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time(&now);
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(void)close(fd);
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return EXIT_FAILURE;
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ret = ioctl(fd, RTC_RD_ALARM, (unsigned long)((uintptr_t)&rd));
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if (ret < 0)
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{
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int errcode = errno;
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fprintf(stderr, "ERROR: RTC_RD_ALARM ioctl failed: %d\n",
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errcode);
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(void)close(fd);
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return EXIT_FAILURE;
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}
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/* Some of the NuttX RTC implementations do not support alarms
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* longer than one month. There RTC_RD_ALARM can return partial
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* calendar values without month and year fields.
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* TODO: fix this in lower layers?
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*/
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if (rd.time.tm_year > 0)
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{
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/* Normal sane case, assuming we did not actually request an
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* alarm expiring in year 1900.
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*/
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timeleft = mktime((struct tm *)&rd.time) - now;
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}
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else
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{
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struct tm now_tm;
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/* Periodic extend "partial" alarms by "unfolding" months,
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* until we get alarm that is in future. Note that mktime()
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* normalizes fields that are out of their valid values,
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* so we don't have to handle carry to tm_year by ourselves.
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*/
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gmtime_r(&now, &now_tm);
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rd.time.tm_mon = now_tm.tm_mon;
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rd.time.tm_year = now_tm.tm_year;
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do {
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timeleft = mktime((struct tm *)&rd.time) - now;
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if (timeleft < 0)
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{
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rd.time.tm_mon++;
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}
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} while (timeleft < 0);
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}
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printf("Alarm %d is %s with %ld seconds to expiration\n", alarmid,
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rd.active ? "active" : "inactive", timeleft);
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}
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printf("Alarm %d set in %lu seconds\n", alarmid, seconds);
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if (cancelmode)
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{
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ret = ioctl(fd, RTC_CANCEL_ALARM, (unsigned long)alarmid);
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if (ret < 0)
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{
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int errcode = errno;
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fprintf(stderr, "ERROR: RTC_CANCEL_ALARM ioctl failed: %d\n",
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errcode);
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(void)close(fd);
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return EXIT_FAILURE;
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}
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printf("Alarm %d has been canceled\n", alarmid);
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}
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if (setmode)
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{
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struct rtc_setrelative_s setrel;
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/* Set the alarm */
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setrel.id = alarmid;
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setrel.signo = CONFIG_EXAMPLES_ALARM_SIGNO;
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setrel.pid = g_alarm_daemon_pid;
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setrel.reltime = (time_t)seconds;
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setrel.sigvalue.sival_int = alarmid;
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ret = ioctl(fd, RTC_SET_RELATIVE, (unsigned long)((uintptr_t)&setrel));
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if (ret < 0)
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{
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int errcode = errno;
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fprintf(stderr, "ERROR: RTC_SET_RELATIVE ioctl failed: %d\n",
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errcode);
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(void)close(fd);
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return EXIT_FAILURE;
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}
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printf("Alarm %d set in %lu seconds\n", alarmid, seconds);
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}
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(void)close(fd);
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return EXIT_SUCCESS;
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