static loaded_msg_t *
htsmsg_store_obtain(const char *key, int create)
{
char errbuf[512];
htsmsg_t *r = NULL;
loaded_msg_t *lm;
LIST_FOREACH(lm, &loaded_msgs, lm_link)
if(!strcmp(lm->lm_key, key))
return lm;
buf_t *b = persistent_load("settings", key, errbuf, sizeof(errbuf));
if(b == NULL) {
if(!create) {
return NULL;
}
} else {
r = htsmsg_json_deserialize(buf_cstr(b));
buf_release(b);
if(r == NULL && !create)
return NULL;
}
if(r == NULL)
r = htsmsg_create_map();
lm = calloc(1, sizeof(loaded_msg_t));
atomic_set(&lm->lm_refcount, 1);
lm->lm_key = strdup(key);
LIST_INSERT_HEAD(&loaded_msgs, lm, lm_link);
lm->lm_msg = r;
callout_arm_managed(&lm->lm_timer, htsmsg_store_timer_cb, lm,
SETTINGS_CACHE_DELAY, htsmsg_store_lockmgr);
return lm;
}
void init() {
/* Load persistent settings, or set the default values. */
if(persistent_load() == -1) {
wanted_temperature = TEMP_DEF;
wanted_humidity = HUM_DEF;
}
i2c_init();
httpd_init();
logs_init();
pid_init();
struct sigaction sa = (struct sigaction) {
.sa_handler = &reload,
.sa_flags = 0,
.sa_restorer = NULL
};
sigemptyset(&(sa.sa_mask));
sigaddset(&(sa.sa_mask), SIGUSR1);
sigaddset(&(sa.sa_mask), SIGINT);
sigaddset(&(sa.sa_mask), SIGTERM);
if(sigaction(SIGUSR1, &sa, NULL) < 0) {
fprintf(stderr, "Couldn't install signal handler.\n");
exit(1);
}
sa.sa_handler = &end;
if(sigaction(SIGTERM, &sa, NULL) < 0 || sigaction(SIGINT, &sa, NULL) < 0) {
fprintf(stderr, "Couldn't install signal handler.\n");
exit(1);
}
}
void reload(int signal) {
httpd_reload();
}
int main(int argc, char **argv) {
float data[2];
init();
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
for(;;) {
if(!read_data(data)) {
continue;
}
log_values(data[1], data[0]);
pid_control(data[1], data[0]);
stats();
if(logstdout(data) == EOF) {
break;
}
delay_ns(&ts, PERIOD_S, 0);
}
end();
}
