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Export boot timestamp, update docs and examples to use it

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cpq committed 2026-06-01 14:35:06 +01:00
1 parent 987075189d
commit 5ae35e3812
11 files changed
+177 -207
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tutorials/zephyr/http-client/src/main.c
+14 -38
View File
@@ -5,8 +5,6 @@
#include "mongoose.h"
#include <zephyr/net/net_mgmt.h>
static time_t s_boot_timestamp = 0;
static struct mg_connection *s_sntp_conn = NULL;
static const char *s_url = "https://example.org/";
static const char *s_post_data = NULL; // POST data
static const int64_t s_timeout_ms = 1500; // Connect timeout in milliseconds
@@ -56,37 +54,6 @@ static void fn(struct mg_connection *c, int ev, void *ev_data) {
}
}
// example system time()-like function
time_t ourtime(time_t *tp) {
time_t t = s_boot_timestamp + mg_millis() / 1000;
if (tp != NULL) *tp = t;
return t;
}
// SNTP callback. Modifies s_boot_timestamp, to make ourtime() correct
static void sfn(struct mg_connection *c, int ev, void *ev_data) {
if (ev == MG_EV_SNTP_TIME) {
int64_t t = *(int64_t *) ev_data;
MG_INFO(("Got SNTP time: %lld ms from epoch", t));
s_boot_timestamp = (time_t) ((t - mg_millis()) / 1000);
if (!s_connected) {
MG_INFO(("Connecting to : [%s]", s_url));
mg_http_connect(&s_mgr, s_url, fn, &done); // Create client connection
s_connected = 1;
}
} else if (ev == MG_EV_CLOSE) {
s_sntp_conn = NULL;
}
}
// Periodic timer syncs time via SNTP
static void timer_fn(void *arg) {
struct mg_mgr *mgr = (struct mg_mgr *) arg;
if (s_sntp_conn == NULL) s_sntp_conn = mg_sntp_connect(mgr, NULL, sfn, NULL);
if (s_boot_timestamp < 9999) mg_sntp_request(s_sntp_conn);
}
// Zephyr: Define a semaphore and network management callback to be able to wait
// until our IP address is ready. The main function will start and block on this
// semaphore until this event handler releases it when the network is ready
@@ -111,15 +78,24 @@ int main(int argc, char *argv[]) {
k_sem_take(&run, K_FOREVER);
mg_log_set(MG_LL_DEBUG);
mg_mgr_init(&s_mgr);
mg_timer_add(&s_mgr, 5000, MG_TIMER_REPEAT | MG_TIMER_RUN_NOW, timer_fn,
&s_mgr);
// Start event loop, exit when client is done
MG_INFO(("Mongoose version : v%s", MG_VERSION));
while (!done) mg_mgr_poll(&s_mgr, 1000);
uint64_t sntp_timer = 0;
while (!done) {
uint64_t period = mg_boot_timestamp_ms == 0 ? 1000 : 24 * 3600 * 1000;
if (mg_timer_expired(&sntp_timer, period, mg_millis())) {
mg_sntp_connect(&s_mgr, NULL, NULL, NULL);
}
// Initiate the HTTPS request once we have a valid time (needed for TLS)
if (mg_boot_timestamp_ms > 0 && !s_connected) {
MG_INFO(("Connecting to : [%s]", s_url));
mg_http_connect(&s_mgr, s_url, fn, &done);
s_connected = 1;
}
mg_mgr_poll(&s_mgr, 1000);
}
mg_mgr_free(&s_mgr);
return 0;